certificate of approval no cf 761... · ccda safe4 fire rated circular balancing damper this...

This certificate is the property of Exova (UK) Limited trading as Warrington Certification Reg. Office: Exova (UK) Limited, Lochend Industrial Estate, Newbridge, Midlothian EH28 8PL United Kingdom. Co. Reg. No. SC070429

Signed and sealed for and on behalf of Exova (UK) Limited trading as Warrington Certification

Paul Duggan Certification Manager

CERTIFICATE OF APPROVAL No CF 761

This is to certify that, in accordance with TS00 General Requirements for Certification of Fire Protection Products

The undermentioned products of 1

of 58

CENTRAL VENTILATION SYSTEMS

PO Box 62547, Sharjah UAE

Tel: 00 971 6533 6355 Fax: 00 971 6533 3723 Email: [email protected]

Have been assessed against the requirements of the Technical Schedule(s) denoted below and are approved for use subject to the conditions

appended hereto: _____________________________________________________________________________________________________

CERTIFIED PRODUCT TECHNICAL SCHEDULE

SAFE4 Non-Coated Fire Rated Steel Ductwork Systems

TS48 Smoke Control and Fire Resisting Ductwork Systems

Issued: 29th June 2010

Reissued : 8th May 2018

Valid to: 7th May 2023

This certificate is the property of Exova (UK) Limited trading as Warrington Certification

Reg. Office: Exova (UK) Limited, Lochend Industrial Estate, Newbridge, Midlothian EH28 8PL United Kingdom. Co. Reg. No. SC070429

CERTIFICATE No CF 761 CENTRAL VENTILATION SYSTEMS

of 58 Signed AH/005 AH/019

Issued: 29th

June 2010 Reissued: 8

th May 2018

Valid to: 7th

May 2023

Manufacture: The following addresses manufacture the products listed on this certificate and the FPC has been conducted to ensure the product meets the scheme requirements: PO Box 62547, Sharjah UAE Tel: +971 6 533 6355 Fax: +971 6 533 3723 Email: [email protected] PO Box 40015, Doha Qatar, Tel: +974 4460 3825 Fax: +974 4460 4413 Email: [email protected]

mailto:[email protected]

mailto:[email protected]





Issued: 29th


th May 2018

Valid to: 7th

May 2023

SAFE4 Non-Coated Steel Ventilation, Smoke Outlet and Kitchen Extract Ductwork Systems

1. This approval relates to the use of the above non-coated ductwork systems in providing

fire resistance of up to 240 minutes stability and integrity (duct A fire attack from ouside the

duct and duct B fire attack from inside the duct) and up to 180 minutes insulation (duct A)

and up to 60 minutes insulation (duct B), as defined in BS 476: Part 24: 1987 (ISO 6944:

1985). Subject to the undermentioned conditions, the ductwork systems will meet the

relevant requirements of BS 9999 for fire resisting compartment ductwork systems, for

periods of up to 240 minutes (dependant upon design limitations) when used in

accordance with the provisions therein.

2. This certification is designed to demonstrate compliance of the product or system specifically with Approved Document B (England and Wales), Section 2 of the Technical Standards (Scotland), Technical Booklet E (N. Ireland). If compliance is required to other regulatory or guidance documents there may be additional considerations or conflict to be taken into account.’

3. The ductwork systems are approved on the basis of:

I. Initial type testing II. Audit testing at the frequency specified in TS48

III. A design appraisal against TS48 IV. Certification of quality management system. V. Inspection and surveillance of factory production control

4. The ductwork systems comprise non-coated SAFE4 steel ductwork. If insulation

performance is required the SAFE4 ductwork is fitted with Insulfrax ® S Blanket around the

outside of the ductwork with thickness as indicated in this certificate.

5. This approval is applicable to insulated and uninsulated SAFE4 steel ductwork systems as

described within this Certificate.

6. The ductwork systems shall be mechanically supported from floor and/or wall constructions

or structural steel members having a fire resistance of at least the same period as the

ductwork systems.

7. The approval relates to on going production. Product and/or its immediate packaging is

identified with the manufacturers’ name, the product name or number, the CERTIFIRE

name or name and mark, together with the CERTIFIRE certificate number and application

where appropriate.

8. SAFE4 ductwork is a non-coated system that does not require any coating treatment to

achieve the fire resistance rating as certified within this certificate





Issued: 29th


th May 2018

Valid to: 7th

May 2023

SAFE4 Non-Coated Steel Ductwork Systems Construction Details Details of the constructions of the different types of duct are given in the following sections. The construction details are arranged on the following order:

SAFE4 FIRE RATED DUCT SYSTEM - LIST OF PRODUCTS

Model Product

RGIL120 SAFE4 Fire Rated Rectangular Lockformed Duct System - Galvanised Steel Construction - 120min

RGIL240 SAFE4 Fire Rated Rectangular Lockformed Duct System - Galvanised Steel Construction - 240min

RMSW120 SAFE4 Fire Rated Rectangular Welded Duct System - Black & Mild Steel Construction - 120 min

RMSW240 SAFE4 Fire Rated Rectangular Welded Duct System - Black & Mild Steel Construction - 240 min

RSSL120 SAFE4 Fire Rated Rectangular Lockformed Duct System - Stainless Steel Construction - 120min

RSSL240 SAFE4 Fire Rated Rectangular Lockformed Duct System - Stainless Steel Construction - 240min

RSSW120 SAFE4 Fire Rated Rectangular Welded Duct System - Stainless Steel Construction - 120min

RSSW240 SAFE4 Fire Rated Rectangular Welded Duct System - Stainless Steel Construction - 240min

CGIL120 SAFE4 Fire Rated Circular & Oval Duct System - Galvanised Steel Construction - 120min

CGIL240 SAFE4 Fire Rated Circular & Oval Duct System - Galvanised Steel Construction - 240min

CSSL120 SAFE4 Fire Rated Circular & Oval Duct System - Stainless Steel Construction - 120min

CSSL240 SAFE4 Fire Rated Circular & Oval Duct System - Stainless Steel Construction - 240min

CSSW120 SAFE4 Fire Rated Circular & Oval Welded Duct System - Stainless Steel Construction - 120min

CSSW240 SAFE4 Fire Rated Circular & Oval Welded Duct System - Stainless Steel Construction - 240min

CMSW120 SAFE4 Fire Rated Circular & Oval Welded Duct System - Mild/Black Steel Construction - 120min

CMSW240 SAFE4 Fire Rated Circular & Oval Welded Duct System - Mild/Black Steel Construction - 240min

MSTM SAFE4 Fire Rated Duct Construction - Multipanel Duct

OSTM SAFE4 Fire Rated Duct Construction - One Sided Duct

DSTM SAFE4 Fire Rated Duct Construction - Two Sided Duct

TSTM SAFE4 Fire Rated Duct Construction - Three Sided Duct

RSTD-I SAFE4 Fire Rated Duct Construction - Internal flanged and stiffened duct

RCDA SAFE4 Fire Rated Rectangular Balancing Damper

RCDA-S SAFE4 Fire Rated Rectangular Balancing Damper - Sleeved

CCDA SAFE4 Fire Rated Circular Balancing Damper





Issued: 29th


th May 2018

Valid to: 7th

May 2023

RAPI SAFE4 Fire Rated Access Panel - Insulated

RAPB SAFE4 Fire Rated Access Panel - UnInsulated Bolted Panel

RAPIW SAFE4 Fire Rated Access Panel - Uninsulated Welded Panel

RSAA SAFE4 Fire Rated Sound Attenuator

DWST SAFE4 Fire Rated Duct Construction - Double Wall Duct Systems

RRDA SAFE4 Fire Rated Non Return Dampers

Appendix A- Tables of construction details Appendix B- Figures of construction details





Issued: 29th


th May 2018

Valid to: 7th

May 2023

SAFE4 Non-Coated Ductwork Systems Horizontal ducts

Details of horizontal duct installations are shown in Figure 1 in Appendix B. In the following sections the construction details for different types of duct are described. Galvanised steel ducts (RGIL120 & RGIL240) The steel duct is constructed in sections up to 1500mm long using hot dipped galvanized steel sheet, 0.6mm, 0.8mm, 1.0mm or 1.2mm thick. The sections are constructed with Pittsburgh lock or grooved corner (RAS) longitudinal seams and flanged cross-joints. At each cross joint fire rated SAFE4 slip-on flanges are fastened to the duct with either 4.8mm-diameter steel rivets at 150mm nominal centres or spot welds at 100mm nominal centres. SAFE4 slip-on flanges are fitted with steel corner plates of the respective flange size that slot into the flanges at each corner and are bolted together with an M10 steel nut and bolt at each corner. The cross joint flanges are fastened together with M8 bolted steel clamps at 250mm maximum centres. Where RSA flanges are used the flanges are bolted together at each corner and at 250mm maximum centres with minimum M8 steel nuts and bolts. Equivalent J2, J3, J4, J5 & J6 rated slip-on flanges or RSA flanges are used for the respective rating. Each cross-joint is sealed with Arboseal Intumescent Tape or Pyrosafe Intumescent Tape GT500 15mm wide x 3mm thick fitted between the mating flanges. All other duct joints are sealed with Arbo XL1075 or Pyrosafe FS1075 or Nullifire M701 fire rated intumescent sealant. For ducts with stiffening collars the stiffening collar is fastened to all four sides of the duct using 4.8mm-diameter steel rivets at 150mm nominal centres or spot welded at 100mm intervals. For ducts with a longer side greater than 1000mm, the stiffeners, steel angle minimum 50mm x 40mm x 1.5mm thick and fastened to the duct through the 40mm leg, are bolted, riveted or welded together at the corners. Alternative S3 rated stiffening collars are fitted in the same way. The size of the angle is increased to minimum 50mm x 50mm x 5mm thick for 120 minute ducts over 2500mm longer side and 240 minute ducts over 2000mm longer side. Alternative S5 rated stiffening collars may be fitted in the same way. For duct sizes over 1000mm a steel tie rod type stiffener is fitted at one end of each duct section, at mid width, to the flanges of the cross joint. The minimum M10 threaded rod is bolted or welded to the cross joint. Two tie rods, equally spaced across the width of the duct, are fitted for duct widths greater than 2000mm. All duct piercings, fastenings or locks are sealed with Arbo XL1075 or Pyrosafe FS1075 or Nullifire M701 fire rated intumescent sealant.





Issued: 29th


th May 2018

Valid to: 7th

May 2023

SAFE4 Non-Coated Ductwork Systems Details of the duct constructions for sizes up to 3000mm wide x 2000mm high are summarised in Tables A1 & A2. These give details of the requirements for steel thickness, cross joints and intermediate stiffeners. Hanger/bearer details are given in Tables A17 & A18. Mild steel welded ducts (RMSW120 & RMSW240) The steel duct is constructed in sections up to 1500mm long using cold rolled or hot rolled sheets 1.4mm thick. Longitudinal joints are fully welded end-to-end. At each cross joint rolled steel angles (RSA) are fully welded to each end of the duct. The minimum sizes of RSA for various duct sizes up to 3000mm are shown in Tables A3 & A4. The RSA flanges are bolted together at each corner and at 250mm maximum centres with minimum M8 nuts and bolts. Each cross-joint is sealed with Arboseal Intumescent Tape or Pyrosafe Intumescent Tape GT500 15mm wide x 3mm thick fitted between the mating flanges. Alternatively, cross-joints may be welded together to form a fully welded construction. All other duct joints are sealed with Arbo XL1075 or Pyrosafe FS1075 or Nullifire M701 fire rated intumescent sealant. RSA stiffening collars are fitted to the duct at 630mm maximum centres for 120 minute ducts with a longer side greater than 1200mm wide and for 240 minute ducts with a longer side greater than 1000mm wide. The stiffening collar is fitted to all four sides of the duct with MIG stitch welds at 200mm nominal centres and welded together at the corners. The minimum sizes of stiffening collar for various duct sizes up to 3000mm are shown in Tables A3 & A4. For 120 minute ducts with a size over 1600mm a steel tie rod type stiffener is fitted at one end of each duct section, at mid width, to the flanges of the cross joint. The minimum M10 threaded rod is bolted or welded to the cross joint. Two tie rods, equally spaced across the width of the duct, are fitted for duct widths greater than 2000mm. For 240 minute ducts a single tie rod is fitted to ducts over 1200mm wide and two tie rods fitted to ducts over 1600mm wide. Details of the duct construction at a range of sizes, up to 3000mm wide x 2000mm high, are shown in Table A3 & A4. These give details of the requirements for steel thickness, cross joints and intermediate stiffeners. All duct piercings, fastenings or locks are sealed with Arbo XL1075 or Pyrosafe FS1075 or Nullifire M701 fire rated intumescent sealant. Details of the duct construction at a range of sizes, up to 3000mm wide x 2000mm high, are shown in Tables A3 & A4. These give details of the requirements for steel thickness, cross joints and intermediate stiffeners. Hanger/bearer details are given in Tables A19 & A20.





Issued: 29th


th May 2018

Valid to: 7th

May 2023

SAFE4 Non-Coated Ductwork Systems Stainless steel ducts (RSSL120 & RSSL240) The steel duct is constructed in sections up to 1500mm long using stainless steel sheet, 0.6mm, 0.8mm, 1.0mm or 1.2mm thick. The sections are constructed with Pittsburgh lock or grooved corner (RAS) longitudinal seams and flanged cross-joints.

At each cross joint fire rated SAFE4 slip-on flanges are fastened to the duct with either 4.8mm-diameter steel rivets at 150mm nominal centres or spot welds at 100mm nominal centres. SAFE4 slip-on flanges are fitted with steel corner plates of the respective flange size that slot into the flanges at each corner and are bolted together with an M10 steel nut and bolt at each corner. The cross joint flanges are fastened together with M8 bolted steel clamps at 250mm maximum centres. Where RSA flanges are used the flanges are bolted together at each corner and at 250mm maximum centres with minimum M8 steel nuts and bolts. Equivalent J2, J3, J4, J5 & J6 rated slip-on flanges or RSA flanges are used for the respective rating. Each cross-joint is sealed with Arboseal Intumescent Tape or Pyrosafe Intumescent Tape GT500 15mm wide x 3mm thick fitted between the mating flanges. All other duct joints are sealed with Arbo XL1075 or Pyrosafe FS1075 or Nullifire M701 fire rated intumescent sealant. For ducts with stiffening collars the stiffening collar is fastened to all four sides of the duct using 4.8mm-diameter steel rivets at 150mm nominal centres or spot welded at 100mm intervals. For ducts with a longer side greater than 1000mm, the stiffeners, steel angle minimum 50mm x 40mm x 1.5mm thick and fastened to the duct through the 40mm leg, are bolted, riveted or welded together at the corners. Alternative S3 rated stiffening collars are fitted in the same way. The size of the angle is increased to minimum 50mm x 50mm x 5mm thick for ducts over 2500mm longer side. Alternative S5 rated stiffening collars may be fitted in the same way. For 120 minute ducts with a size over 1600mm a steel tie rod type stiffener is fitted at one end of each duct section, at mid width, to the flanges of the cross joint. The minimum M10 threaded rod is bolted or welded to the cross joint. Two tie rods, equally spaced across the width of the duct, are fitted for duct widths greater than 2500mm. For 240 minute ducts a single tie rod is fitted to ducts over 1000mm wide and two tie rods fitted to ducts over 2000mm wide.

Details of the duct constructions up to 3000mm wide x 2000mm high are shown in Tables A5 & A6. These give details of the requirements for steel thickness, cross joints and intermediate stiffeners. Hanger/bearer details are given in Tables A21 & A22.

Permissible steel for construction is commercial grade stainless steel.





Issued: 29th


th May 2018

Valid to: 7th

May 2023

SAFE4 Non-Coated Ductwork Systems Stainless steel welded ducts (RSSW120 & RSSW240) The steel duct is constructed in sections up to 1500mm long using stainless steel sheets 1.0mm or 1.2mm thick. Longitudinal joints are fully welded end-to-end. At each cross joint rolled steel angles (RSA) are fully welded to each end of the duct. The minimum sizes of RSA for various duct sizes up to 3000mm are shown in Tables A7 & A8. The RSA flanges are bolted together at each corner and at 250mm maximum centres with M8 nuts and bolts. Each cross-joint is sealed with Arboseal Intumescent Tape or Pyrosafe Intumescent Tape GT500 15mm wide x 3mm thick fitted between the mating flanges. Alternatively, cross-joints may be welded together to form a fully welded construction. All other duct joints are sealed with Arbo XL1075 or Pyrosafe FS1075 or Nullifire M701 fire rated intumescent sealant. For ducts with a longer side greater than 1200mm wide, RSA stiffening collars are fitted at 630mm maximum centres. The stiffening collar is fitted to all four sides of the duct with MIG stitch welds at 200mm nominal centres and welded together at the corners. The minimum sizes of stiffening collar for various duct sizes up to 3000mm are shown in Tables A7 & A8. For 120 minute ducts with a size over 1600mm a steel tie rod type stiffener is fitted at one end of each duct section, at mid width, to the flanges of the cross joint. The minimum M10 threaded rod is bolted or welded to the cross joint. Two tie rods, equally spaced across the width of the duct, are fitted for duct widths greater than 2000mm. For 240 minute ducts a single tie rod is fitted to ducts over 1000mm wide and two tie rods fitted to ducts over 2000mm wide. All duct piercings, fastenings or locks are sealed with Arbo XL1075 or Pyrosafe FS1075 or Nullifire M701 fire rated intumescent sealant. Details of the duct construction at a range of sizes, up to 3000mm wide x 2000mm high, are shown in Tables A7 & A8. These give details of the requirements for steel thickness, cross joints and intermediate stiffeners. Hanger/bearer details are shown in Tables A21 & A22.





Issued: 29th


th May 2018

Valid to: 7th

May 2023

SAFE4 Non-Coated Ductwork Systems Multi-panel ducts (MSTM) The steel duct is constructed in sections up to 1500mm long using hot dipped galvanised steel sheet, mild steel sheet or stainless steel sheet 1.2mm thick. The duct comprises corner panels, maximum 1000mm x 1000mm, and flat panels, maximum 2000mm wide. ‘U-panels’ may be constructed a maximum width of 1500mm and a maximum height of 1000mm. Each panel is reinforced around the perimeter and at mid-depth with steel angle, 50mm x 50mm x 5.0mm thick. The angles are fastened to the sheet with M6 steel bolts or 4.8mm steel rivets at maximum 150mm centres or spot welds at 75mm maximum centres. The panels are fastened together with M10 steel setscrews and nuts at 250mm maximum centres. Each section is fitted with tie bars/drop rods at 1000mm maximum centres with the two end rods/bars positioned nominally 250mm from ends of the section. The bars are connected to the angle at mid-depth with a nut and washer on both sides. The bars/rods are extended to the supporting structure above the duct to form the hangers. The spacing of the hangers and the size of the steel hanger components must be adjusted so that the tensile stress in the bars/rods does not exceed 15N/mm

2 for fire resistance periods up to 60 minutes, 10N/mm

2 for fire resistance periods up to

120 minutes and 6N/mm2 for fire resistance periods up to 240 minutes.

The maximum spacing of the hangers is 1500mm. The duct sections are fastened together with M10 steel set screws and nuts at 250mm centres. Each cross-joint is sealed with Arboseal Intumescent Tape or Pyrosafe Intumescent Tape GT500 15mm wide x 3mm thick fitted between the mating flanges. All other duct joints are sealed with Arbo XL1075 or Pyrosafe FS1075 or Nullifire M701 fire rated intumescent sealant. The maximum size of the steel ducts is 8000mm wide x 6000mm high.

Insulation

The insulation material fitted around the ducts is Insulfrax S blanket. The mineral wool blanket has a nominal density of 96kg/m

3. The blanket, supplied in rolls 610mm or 1220mm wide, is

provided in thicknesses of 13, 25, 38 and 50mm. The thicknesses of insulation required for the ducts are shown in Table 1.

Table 1 Insulation thickness

Fire resistance - minutes

Protection thickness – mm

Duct A Duct B Kitchen extract

30 25 50 100

60 38 88 -

120 76 - -

180 100 - -





Issued: 29th


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May 2023

SAFE4 Non-Coated Ductwork Systems The steel duct is clad with one or two layers of Insulfrax S blanket that are wrapped around the duct. For two layer systems all joints are tight butt joints. Joints are staggered between layers by 300mm. For single layer protection all joints are overlapped by nominally 75mm. The Insulfrax S blanket is fastened to the duct with 2mm-diameter steel pins and spring steel washers, minimum 38mm diameter. The pins are welded, screwed or riveted to the steel duct at 200mm centres across the width of the duct and 200mm centres along the length of the duct. On

the bottom face of horizontal ducts the ends of the pins are bent over by 90° once the protection and washers have been fitted. The arrangement is shown in Figures 3 & 4.

Hanger supports Details of the hanger supports for different sizes for fire exposure up to 240 minutes are given in the Tables A17, A18, A19, A20, A21 & A22 for each type of duct construction. Each steel hanger consists of two threaded drop rods, minimum M8, and a channel section bearer. The bearer is fastened to the drop rods with hexagonal nuts and washers. The spacing of the hangers and the size of the steel hanger components must be adjusted so that the tensile stress in the rods and the bending stress in the angles/channels do not exceed 15N/mm

2 for fire resistance periods up

to 60 minutes, 10N/mm2 for fire resistance periods up to 120 minutes and 6N/mm

2 for fire

resistance periods up to 240 minutes. The maximum spacing of the hangers is 1500mm. Each hanger must be positioned so that it is adjacent to (within 100mm of) a cross joint or a stiffening collar. The Unistrut bearers may be fitted within or outside the insulation. Larger bearers are fitted outside the insulation. The drop rods are positioned outside the insulation material but at a distance of not more than 50mm from the insulation. Where the construction of the concrete floor or the structural steelwork above the duct, from which the duct is supported, does not allow the drop rods to be located close to the duct walls, an increase in the distance between the drop rods and the duct walls would not be expected to adversely affect the fire resistance performance of the duct assemblies provided that the sizes of the hanger members are adjusted to comply with the stress limitations stated above. The fixings used to fasten the threaded rod hangers to concrete soffits must be all-steel expanding anchors with a penetration into the concrete of at least 50mm for 120 minutes fire resistance and 60mm for 240 minutes fire resistance. The anchors must match the size of the threaded rods, be of sufficient strength to support the weight of the duct and be fitted in accordance with the manufacturer's instructions. Suitable fixings are such as Hilti HKD anchors or equivalent. For hollow core concrete it is recommended that all steel anchors designed for hollow core concrete be used. When fixing to a steel supporting construction, a hole should be drilled through the steel member, allowing the drop rod to be supported by a steel nut and washer above. If a clamp type fixing is used the clamp must be composed of steel, suitable for the purpose and pass around the steel member and be fastened back on itself. Clamps that rely on friction to hold them in place are not suitable.





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Valid to: 7th

May 2023

A supporting concrete construction must consist of steel reinforced structural concrete and be capable of supporting the anticipated loads for the required period of fire resistance. It is not possible to specify a minimum grade of concrete due to the wide range of different types of concrete (e.g. dense aggregate, lightweight aggregate, autoclaved aerated). However, in all cases the type of fixing should be designed for the type of concrete and the depth of the fixing may have to be increased to maintain adequate engagement. Penetration seal The penetration seal system, where the duct passes through fire compartment walls or floors, is the same as that tested in report WF No. 332925A for uninsulated ducts and the same as that tested in report WF No. 332925C for insulated ducts. Safire coated mineral fibre slab, minimum 100mm thick x 160kg/m

3 density, or Firetherm coated Fire Stop Board, minimum 100mm thick x

140kg/m3 density, is fitted around the duct within the opening. All edges between the slab, the

wall or floor and the steel duct are sealed with Nullifire M701 or Firetherm Intucoat intumescent mastic on both faces of the penetration seal. A steel plate collar, minimum 1.0mm thick, is fitted around the steel duct on both sides of the wall, overlapping the wall or floor by at least 100mm on each side. The plate is fixed to the wall or floor with M8 all-steel expanding anchors at 300mm maximum centres. All edges between the plate collar, the wall or floor and the steel duct are sealed with Alfacryl intumescent acrylic sealant or Arbo XL1075 or Pyrosafe FS1075. A duct cross joint or a steel stiffening collar must be positioned within the thickness of the seal assembly. One, two and three sided ducts (OSTM, DSTM & TSTM) One, two and three side ducts are formed by attaching the steel duct directly to the adjacent concrete floor and/or concrete/masonry wall. The longitudinal edges of each duct section are formed with a flange as specified in relevant construction schedule for four-sided ducts. The flanges are fastened to the floor and/or wall with M10 all-steel expanding anchors, with steel washers, at 350mm maximum centres. Arboseal Intumescent Tape or Pyrosafe Intumescent Tape GT500, 15mm wide x 3mm thick, is fitted between the flanges and the floor or wall to seal the joints. No hangers are required. All other aspects of the duct construction are the same as for four sided ducts. The construction details for one, two and three sided ducts are shown in Figures 5 to 7.





Issued: 29th


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May 2023

SAFE4 Non-Coated Ductwork Systems Vertical ducts Vertical duct installation is shown in Figure 2. The construction of vertical ducts is the same as for horizontal ducts. In order to support the duct system in the vertical orientation, steel sections are fastened to the steel duct, either along the two longer sides or on all four sides. The steel sections either span across the opening in the concrete floor or form part of a cantilever bracket that is fastened to the building structure. The maximum vertical distance between supports is 4.0m. Also, to prevent buckling of the duct, the distance between supports should not exceed 8 times the smallest lateral dimension across the outside face of the steel duct. The weight of the duct system is taken by the building structure at each floor level. The stress limit within the steel supports is 10N/mm

2 for fire exposures of up to

120 minutes and 6N/mm2 for fire resistance periods up to 240 minutes.

On insulated ducts, the supporting steel members, where they emerge from the protection around the duct, are clad with the same thickness of insulation for at least 300mm. The design of the penetration seal for vertical ducts through concrete floors and the application of the Insulfrax S blanket are the same as for horizontal ducts. Smoke outlet ducts If the duct is to act as a smoke outlet duct then additional steel tie rod type stiffeners are fitted adjacent to any bare openings in the side wall of horizontal ducts. Two M10 threaded rods, fitted with steel nuts and washers, are positioned 50mm behind the aperture spaced 1/3 and 2/3 across the opening. These are not required for duct systems with fire ratings up to 180 minutes but only for systems with a fire rating of 240 minutes. Kitchen extract ducts For kitchen extraction ductwork the construction is the same as described above to achieve the required integrity and stability ratings for a maximum of up to 240 minutes. The insulation thickness required to achieve the BS kitchen extraction internal temperatures for Duct A ( fire inside) for a maximum 30 minute rating is given in Table 1. For longer fire ratings the duct is only suitable for installations where insulation is not required.

Circular and flat oval ducts (CGIL120, CGIL240, CSSL120, CSSL240, CSSW120, CSSW240, CMSW120 & CMSW240) Details of the construction of circular and flat oval straight seamed and spirally wound steel ducts are generally in accordance with those described in DW/144 - Specification for sheet metal duct work - low, medium and high pressure/velocity air systems (published by the Building &





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May 2023

Engineering Services Association), or equivalent specification, but with the following minimum requirements:

SAFE4 Non-Coated Ductwork Systems Circular ducts • The thickness of steel sheet used in the construction of the ducts is shown in Tables A9 to

A16.

• The longitudinal seams and cross joints must be at least equivalent in strength to the seams used on the tested rectangular duct.

• The spiral seam of spirally wound ducts must be equivalent to the grooved seam.

• The maximum diameter of circular ducts covered by this assessment is 2000mm.

• The design of the penetration seal where the duct passes through fire compartment walls or floors must be equivalent to the designs specified for rectangular ducts.

The design of the hanger support systems should be such that the maximum stress in the hanger components does not exceed 15N/mm


2 for

fire resistance periods up to 120 minutes and 6N/mm2 for fire resistance periods up to 240

minutes.

Details of the duct construction at various sizes are given in Tables A9 to A16. These give details of the requirements for steel thickness, cross joints and intermediate stiffeners. All duct piercings, fastenings or locks are sealed with Arbo XL1075 or Pyrosafe FS1075 or Nullifire M701 fire rated intumescent sealant. The Insulfrax S blanket insulation is fitted to circular ducts in the same manner as for 4-sided rectangular ducts using steel pins. The pins are fitted in a grid of 200mm along and around the duct.

Flat oval ducts Minimum steel thickness for flat oval ducts:

Type of duct Maximum surface area per metre length – m

2/m

≤1.2 ≤2.0 ≤2.6 ≤3.83

Ventilation

Smoke outlet/extract

Kitchen extract

0.8

1.0

1.0

1.0

1.0

1.0

1.2

1.2

1.2

1.2

1.2

1.2

For flat oval ducts over 500mm wide x 150mm deep, tie rods, with a minimum diameter of 12mm, must be fitted between the top and bottom walls of the flat portion of the duct, as follows:





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• for ducts between 500mm wide and 700mm wide, there should be one tie rod located at mid-width of the duct at 1000mm centres along the duct.

SAFE4 Non-Coated Ductwork Systems

• for ducts between 701mm wide and 900mm wide, there should be one tie rod located at mid-width of the duct at 750mm centres along the duct.

• for ducts between 901mm wide and 1200mm wide, there should be two tie rods equi-spaced across the duct at 500mm centres along the duct.

• for ducts between 1201mm wide and 1800mm wide, there should be tie rods at 250mm centres along the duct, alternating between one tie rod centrally located and two tie rods equi-spaced across the duct.

All duct piercings, fastenings or locks are sealed with Arbo XL1075 or Pyrosafe FS1075 or Nullifire M701 fire rated intumescent sealant. All hanger/bearer details are the same as for the rectangular ducts. Access panels (RAPI,RAPB & RAPIW) The details of the construction of three different designs of access panel are shown in Figures 10 to 12. The maximum opening size of the panels is 1000mm x 1000mm. The panels must not interrupt a cross joint or a stiffener.

The access panel is fitted into a 40mm flanges x 1.5mm thick channel section frame that is fastened to the duct skin at 200mm maximum centres with 4.8mm steel rivets or M6 bolts and nuts and sealed with a bead of Arbo XL1075 or Pyrosafe FS1075 or Nullifire M701 fire rated intumescent sealant. Alternatively, the channel section frame may be welded on to the duct. The web depth of the channel matches the insulation thickness. A 25mm-wide ceramic tape is fastened to the panel side of the frame with 4.8mm steel rivets and sealed with a bead of intumescent sealant. The access panel is made of two 1.2mm-thick steel trays filled with rock wool of 48kg/m

3 nominal density. The two trays are fastened together with spot welds at 100mm

nominal centres. The thickness of the panel can vary from 25mm to 75mm.

The panel is held in the frame with M6 steel wingnuts and washers fitted onto the M6 screws welded in frame. The fasteners are fitted on all four sides of the panel at 200mm maximum centres.

The single skin bolted panel comprises 1.2mm steel sheet with a 5mm lip formed on all four edges of the panel. A door handle, made of 10mm steel bar, is welded to the panel. The access panel is fitted into a 40mm x 1.5mm thick channel section frame that is fastened to the duct skin at 200mm maximum centres with 4.8mm steel rivets or M6 bolts and nuts and sealed with a bead of Arbo XL1075 or Pyrosafe FS1075 or Nullifire M701 fire rated intumescent sealant. M6 steel screws are welded to the channel section frame at 200mm maximum centres. The panel is fastened to the channel





Issued: 29th


th May 2018

Valid to: 7th

May 2023

frame with steel wingnuts and washers fitted onto the M6 screws. A 25mm-wide ceramic tape is fastened to panel side of the frame with 4.8mm steel rivets and sealed with a bead of intumescent sealant. Where the panel is required to sit flush with the duct, the channel section

SAFE4 Non-Coated Ductwork Systems may be replaced with a 50mm x 5.0mm thick flat steel bar that is bolted or riveted to duct wall at 200mm maximum centres. The single skin welded panel comprises 1.2mm steel sheet with a 5mm lip formed on all four edges of the panel. A door handle, made of 10mm steel bar, is welded to the panel. The frame of the panel assembly consists of steel flat bar, 50mm wide x 5mm thick, with M6 steel screws welded to the flat bar frame at 200mm maximum centres. The flat bar frame is welded to the duct skin. The panel is fastened to the frame with steel wingnuts and washers fitted onto the M6 screws. A 25mm-wide ceramic tape is fastened to door side of the frame with 4.8mm steel rivets and sealed with a bead of intumescent sealant.

Sound attenuators (RSAA) The construction of the duct casing of the Coustek sound attenuators must comply with the specification for the SAFE4 ductwork as a minimum. This includes the steel thickness, longitudinal joints, cross joints and fixings. Steel pods are fitted within the attenuator casing. Each pod is constructed with bull nose sections at each end, minimum 0.8mm thick, and perforated sides, minimum 0.7mm thick. The pods are filled with mineral wool with a minimum density of 48kg/m

3. The pods are fastened to the body of the attenuator with 4.8mm steel rivets

at 150mm nominal centres or spot welds at 100mm centres. The sound attenuator units may be insulated with the same insulation system as used for the ventilation duct system. Details of construction are shown in Figure 13. The attenuators may be constructed with removable baffles held in place with RSA welded, bolted or riveted to the casing at 200mm centres.

The sound attenuator units must each be supported by at least two steel hangers in the same manner as the steel duct system. The spacing of the hangers and the size of the steel hanger components must be adjusted so that the tensile stress in the rods and the bending stress in the channel bearers do not exceed 15N/mm


2

for fire resistance periods up to 120 minutes and 6N/mm2 for fire resistance periods up to 240

minutes. Balancing dampers (RCDA, RCDA-S & CCDA) The arrangement of the all steel Volume Control Dampers is shown in Figures 14 to 16. The dampers are constructed with a channel frame, 200mm wide x 30mm deep x 1.2mm thick. The channels on each side are fully welded at the corners to form the frame. The blades are maximum 200mm wide and made of 1.2mm-thick sheet for a single skin construction and 0.8mm thick for a double skin construction. They are welded to 12mm-diameter spindles supported by brass bushes. A 25mm steel stop, made out of 1.2mm steel strip, is welded to the top and bottom parts of frame to form a stop for the blades when in closed position. For internal heights





Issued: 29th


th May 2018

Valid to: 7th

May 2023

greater than 200mm, a multiple blade assembly is used with steel linkages welded on 12mm spindles. Damper blades are fixed in position with steel handle welded to the steel spindle linkage and secured in place with an M6 bolt and wing nut.

SAFE4 Non-Coated Ductwork Systems The maximum damper size is 1000x1000, internal dimensions. The damper is fastened to the ductwork in the same way as for the cross joints of the SAFE4 ductwork. The damper units must each be independently supported by a steel hanger in the same manner as the steel duct system. The size of the steel hanger components must be adjusted so that the tensile stress in the rods and the bending stress in the channel bearers do not exceed 15N/mm

2 for fire

resistance periods up to 60 minutes, 10N/mm2 for fire resistance periods up to 120 minutes and

6N/mm2 for fire resistance periods up to 240 minutes.

Non return damper (RRDA)

The rectangular dampers are constructed with a channel frame, 200mm wide x 30mm or 40mm deep x 1.2mm thick. The channels on each side are welded at the corners to form the frame. The blades are maximum 200mm wide and made of 0.6mm thick sheet. The blades are supported with steel or brass bushes. The maximum size of the damper is 1000mm x 1000mm. Double wall insulated duct (DWST) The duct is constructed in a double wall configuration where the construction and installation of the inner steel duct and insulation comply with the relevant construction schedules. The insulation thickness shall vary in accordance with the required insulation rating as detailed in Table 1. The outer jacket or shell for protecting the insulation material can be constructed of aluminium or steel. Internally flanged and stiffened ducts (RSTD-I) Where it is not possible for the duct flanges and stiffeners to be fitted to the outside the duct, RSA flanges to meet cross joint ratings and stiffeners to meet stiffener ratings can be fitted internally. The RSA profiles are fastened to the duct in the same way as for external profiles. The profiles are welded, bolted or riveted at corners in the same way as they are fastened when fitted externally. Construction details are shown in Figure 8.





Issued: 29th


th May 2018

Valid to: 7th

May 2023

Appendix A - Tables A1 to A22 - Steel ductwork and hanger specifications

Table A1 RGIL120 SAFE4 Fire Rated Rectangular Lockformed Duct System - Galvanised Steel Construction – 120 minutes

Table A2 RGIL240 SAFE4 Fire Rated Rectangular Lockformed Duct System - Galvanised Steel Construction – 240 minutes

Table A3 RMSW120 SAFE4 Fire Rated Rectangular Welded Duct System - Black & Mild Steel Construction - 120 minutes

Table A4 RMSW240 SAFE4 Fire Rated Rectangular Welded Duct System - Black & Mild Steel Construction - 240 minutes

Table A5 RSSL120 SAFE4 Fire Rated Rectangular Lockformed Duct System - Stainless Steel Construction – 120 minutes

Table A6 RSSL240 SAFE4 Fire Rated Rectangular Lockformed Duct System - Stainless Steel Construction – 240 minutes

Table A7 RSSW120 SAFE4 Fire Rated Rectangular Welded Duct System - Stainless Steel Construction – 120 minutes

Table A8 RSSW240 SAFE4 Fire Rated Rectangular Welded Duct System - Stainless Steel Construction – 240 minutes

Table A9 CGIL120 SAFE4 Fire Rated Circular & Oval Duct System - Galvanised Steel Construction – 120 minutes

Table A10 CGIL240 SAFE4 Fire Rated Circular & Oval Duct System - Galvanised Steel Construction – 240 minutes

Table A11 CSSL120 SAFE4 Fire Rated Circular & Oval Duct System - Stainless Steel Construction – 120 minutes

Table A12 CSSL240 SAFE4 Fire Rated Circular & Oval Duct System - Stainless Steel Construction – 240 minutes

Table A13 CSSW120 SAFE4 Fire Rated Circular & Oval Welded Duct System - Stainless Steel Construction – 120 minutes

Table A14 CSSW240 SAFE4 Fire Rated Circular & Oval Welded Duct System - Stainless Steel Construction – 240 minutes

Table A15 CMSW120 SAFE4 Fire Rated Circular & Oval Welded Duct System - Mild/Black Steel Construction – 120 minutes

Table A16 CMSW240 SAFE4 Fire Rated Circular & Oval Welded Duct System - Mild/Black Steel Construction – 240 minutes

Table A17

SAFE4 Hanger and Bearer Specification – Galvanized Duct Construction Standard – 120 minutes

Table A18

SAFE4 Hanger and Bearer Specification – Galvanized Duct Construction Standard – 240 minutes

Table A19 SAFE4 Hanger and Bearer Specification –Mild/BlackSteel Duct Construction Standard – 120 minutes

Table A20

SAFE4 Hanger and Bearer Specification –Mild/BlackSteel Duct Construction Standard – 240 minutes

Table A21 SAFE4 Hanger and Bearer Specification –Stainless Steel Duct Construction Standard – 120 minutes





Issued: 29th


th May 2018

Valid to: 7th

May 2023

RGIL1

20: S

AFE4

Fire

Rat

ed R

ecta

ngul

ar Lo

ckfo

rmed

Duc

t Sys

tem

- Gal

vani

sed

Stee

l Con

stru

ctio

n - 1

20m

in Fi

re R

esist

ance

: Sta

bilit

y & In

tegr

ity

Stan

dard

Duc

tSh

eet G

auge

Leng

thTh

ickne

ssTy

pe/ R

atin

gFa

sten

ing

Tieb

arRe

-info

rcem

ent

Type

/ Rat

ing

Spac

ing

Fast

enin

gCo

rner

s

24ga

4.8m

m R

ivet @

150m

m-

M8

Clam

p at

--

--

0.60

mm

Spot

Wel

d @

100

mm

-30

0mm

--

--

22ga

4.8m

m R

ivet @

150m

m-

M8

Clam

p at

--

--

0.80

mm

Spot

Wel

d @

100

mm

-30

0mm

--

--

22ga

4.8m

m R

ivet @

150m

m-

M8

Clam

p at

--

--

0.80

mm

Spot

Wel

d @

100

mm

-30

0mm

--

--

22ga

4.8m

m R

ivet @

150m

m-

M8

Clam

p at

--

--

0.80

mm

Spot

Wel

d @

100

mm

-30

0mm

--

--

20ga

4.8m

m R

ivet @

150m

mM

8 Cl

amp

at

1.0

mm

Spot

Wel

d @

100

mm

300m

m

20ga

4.8m

m R

ivet @

150m

mM

8 Cl

amp

at

1.0

mm

Spot

Wel

d @

100

mm

300m

m

18ga

4.8m

m R

ivet @

150m

mM

8 Cl

amp

at

1.2m

mSp

ot W

eld

@ 1

00m

m30

0mm

18ga

4.8m

m R

ivet @

150m

mM

8 Cl

amp

at

1.2m

mSp

ot W

eld

@ 1

00m

m30

0mm

4.8m

m R

ivet o

r wel

ded

Bolte

d wi

th M

8 bo

lts

and

nuts

or w

elde

d

1 x M

10 a

t max

50m

m

from

Cro

ss Jo

int

1 x M

10 a

t max

50m

m

from

Cro

ss Jo

int

2 x M

10 a

t max

50m

m

from

Cro

ss Jo

int

2 x M

10 a

t max

50m

m

from

Cro

ss Jo

int

Max

750

mm

to jo

int o

r st

iff

Max

750

mm

to jo

int o

r st

iff

Max

750

mm

to jo

int o

r st

iff

Max

750

mm

to jo

int o

r st

iff

4.8m

m R

ivet 1

50m

m 0

r sp

ot w

elde

d at

100

mm

4.8m

m R

ivet 1

50m

m 0

r sp

ot w

elde

d at

100

mm

4.8m

m R

ivet 1

50m

m 0

r sp

ot w

elde

d at

100

mm

4.8m

m R

ivet 1

50m

m 0

r sp

ot w

elde

d at

100

mm

2501

-300

015

00 m

m

0-40

015

00 m

m

1500

mm

2001

-250

0

401-

600

1500

mm

801

- 100

015

00 m

m

1001

- 16

0015

00 m

m

1601

-200

0

601-

800

1500

mm

1500

mm

Stiff

ener

Duct

Size

20m

m SA

FE4

Slip-

on

flang

e - J

2

20m

m SA

FE4

Slip-

on

flang

e - J

2

30m

m SA

FE4

Slip-

on

flang

e - J

3

Cros

s Joi

nt /

Conn

ecto

r

30m

m SA

FE4

Slip-

on

flang

e - J

4

40m

m SA

FE4

Slip-

on

flang

e - J

5

40m

m SA

FE4

Slip-

on

flang

e - J

5

4.8m

m R

ivet o

r wel

ded

4.8m

m R

ivet o

r wel

ded

40m

m SA

FE4

Slip-

on

flang

e - J

6

40m

m SA

FE4

Slip-

on

flang

e - J

6

50x4

0x1.

5mm

ang

le w

/ sa

fe e

dge

- S3

50x4

0x1.

5mm

ang

le w

/ sa

fe e

dge

- S3

50x4

0x1.

5mm

ang

le w

/ sa

fe e

dge

- S3

50x5

0x5m

m A

ngle

- S5

Table A22 SAFE4 Hanger and Bearer Specification –Stainless Steel Duct Construction Standard – 240 minutes

Table A1 Galvanised steel ductwork specification – 120 minutes





Issued: 29th


th May 2018

Valid to: 7th

May 2023

Table A2 Galvanised steel ductwork specification – 240 minutes





Issued: 29th


th May 2018

Valid to: 7th

May 2023

Table A3 Mild/black steel welded ductwork specification – 120 minutes

RGIL

240:

SAF

E4 F

ire R

ated

Rec

tang

ular

Lock

form

ed D

uct S

yste

m -

Galv

anis

ed S

teel

Con

stru

ctio

n - 2

40m

in

Stan

dard

Duc

tSh

eet G

auge

Leng

thTh

ickn

ess

Type

/ Ra

ting

Fast

enin

gTi

ebar

Re-in

forc

emen

tTy

pe/

Ratin

gSp

acin

gFa

sten

ing

Corn

ers

22ga

4.8m

m R

ivet

@

150m

m-

M8

Clam

p at

--

--

0.80

mm

Spot

Wel

d @

100

mm

-30

0mm

--

--

22ga

4.8m

m R

ivet

@

150m

m-

M8

Clam

p at

--

--

0.80

mm

Spot

Wel

d @

100

mm

-30

0mm

--

--

22ga

4.8m

m R

ivet

@

150m

m-

M8

Clam

p at

--

--

0.80

mm

Spot

Wel

d @

100

mm

-30

0mm

--

--

20ga

4.8m

m R

ivet

@

150m

m-

M8

Clam

p at

--

--

1.0

mm

Spot

Wel

d @

100

mm

-30

0mm

--

--

20ga

4.8m

m R

ivet

@

150m

mM

8 Cl

amp

at

1.0

mm

Spot

Wel

d @

100

mm

300m

m

18ga

4.8m

m R

ivet

@

150m

mM

8 Cl

amp

at

1.2

mm

Spot

Wel

d @

100

mm

300m

m

18ga

4.8m

m R

ivet

@

150m

mM

8 Cl

amp

at

1.2

mm

Spot

Wel

d @

100

mm

300m

m

18ga

4.8m

m R

ivet

@

150m

mM

8 Cl

amp

at

1.2

mm

Spot

Wel

d @

100

mm

300m

m

2 x

M10

at m

ax

50m

m fr

om C

ross

Jo

int

4.8m

m R

ivet

or

wel

ded

Max

750

mm

to jo

int

or s

tiff

4.8m

m R

ivet

150

mm

0r

spo

t wel

ded

at

100m

m

4.8m

m R

ivet

or

wel

ded

Max

750

mm

to jo

int

or s

tiff

4.8m

m R

ivet

150

mm

0r

spo

t wel

ded

at

100m

m

Bolte

d w

ith M

8 bo

lts

and

nuts

or w

elde

d

Max

750

mm

to jo

int

or s

tiff

4.8m

m R

ivet

150

mm

0r

spo

t wel

ded

at

100m

m

4.8m

m R

ivet

or

wel

ded

Max

750

mm

to jo

int

or s

tiff

4.8m

m R

ivet

150

mm

0r

spo

t wel

ded

at

100m

m

2501

-300

015

00 m

m40

mm

SAF

E4 S

lip-o

n fla

nge

- J6

50x5

0x5m

m A

ngle

- S5

50x4

0x1.

5mm

ang

le

w/ s

afe

edge

- S3

50x4

0x1.

5mm

ang

le

w/ s

afe

edge

- S3

50x5

0x5m

m A

ngle

- S5

1 x

M10

at m

ax

50m

m fr

om C

ross

Jo

int

1 x

M10

at m

ax

50m

m fr

om C

ross

Jo

int

2 x

M10

at m

ax

50m

m fr

om C

ross

Jo

int

1601

-200

015

00 m

m40

mm

SAF

E4 S

lip-o

n fla

nge

- J5

2001

-250

015

00 m

m40

mm

SAF

E4 S

lip-o

n fla

nge

- J6

801

- 100

015

00 m

m40

mm

SAF

E4 S

lip-o

n fla

nge

- J5

1001

- 16

0015

00 m

m40

mm

SAF

E4 S

lip-o

n fla

nge

- J5

401-

600

1500

mm

30m

m S

AFE4

Slip

-on

flang

e - J

3

601-

800

1500

mm

30m

m S

AFE4

Slip

-on

flang

e - J

4

Duct

Size

Cros

s Joi

ntSt

iffen

er

0-40

015

00 m

m20

mm

SAF

E4 S

lip-o

n fla

nge

- J2





Issued: 29th


th May 2018

Valid to: 7th

May 2023

Table A4 Mild/black steel welded ductwork specification – 240 minutes

RM

SW12

0: S

AFE

4 Fi

re R

ated

Rec

tang

ular

Wel

ded

Duc

t Sys

tem

- Bl

ack

& M

ild S

teel

Con

stru

ctio

n - 1

20 m

in

Stan

dar

d D

uct

Shee

t G

auge

Len

gth

Thic

knes

sTy

pe/

Rat

ing

Fast

enin

gTi

ebar

Re-

info

rcem

ent

Typ

e/ R

atin

gSp

acin

gFa

sten

ing

Corn

ers

16ga

1.40

mm

16ga

1.40

mm

16ga

1.40

mm

16ga

1.40

mm

16ga

1.40

mm

16ga

1.40

mm

16ga

1.40

mm

16ga

1.40

mm

Coa

ting

of

duct

ext

erna

lly w

ith

Red

Oxi

de P

rim

er &

Gal

vani

c ba

se p

aint

(O

ptio

nal)

Duc

ts m

ay b

e w

elde

d to

geat

her

at c

ross

join

ts. W

here

nut

s an

d bo

lts

are

utili

zed,

intu

mes

cent

fir

e ra

ted

gask

et is

app

lied

betw

een

mat

ing

flan

ges.

2001

- 2

500

1500

mm

50x5

0x5m

m

Rol

led

Stee

l Ang

leC

onti

neou

sly

Wel

ded

on D

uct

2 x

M10

at

max

50

mm

fro

m C

ross

Jo

int

M8

nuts

wit

h bo

lts

at 3

00m

m50

x50x

5mm

R

olle

d St

eel A

ngle

Max

630

mm

to

Join

t or

Sti

ff.

Stic

h W

eld

or M

ig

Tack

Wel

ded

at

200m

m c

entr

es

Wel

ded

at

Cor

ners

Wel

ded

at

Cor

ners

Wel

ded

at

Cor

ners

Wel

ded

at

Cor

ners

-

M8

nuts

wit

h bo

lts

at 3

00m

m

M8

nuts

wit

h bo

lts

at 3

00m

m

M8

nuts

wit

h bo

lts

at 3

00m

m

M8

nuts

wit

h bo

lts

at 3

00m

m

M8

nuts

wit

h bo

lts

at 3

00m

m

-

Stic

h W

eld

or M

ig

Tack

Wel

ded

at

200m

m c

entr

es

Stic

h W

eld

or M

ig

Tack

Wel

ded

at

200m

m c

entr

es

Stic

h W

eld

or M

ig

Tack

Wel

ded

at

200m

m c

entr

es

Max

630

mm

to

Join

t or

Sti

ff.

Max

630

mm

to

Join

t or

Sti

ff.

Max

630

mm

to

Join

t or

Sti

ff.

40x4

0x4m

m

Rol

led

Stee

l Ang

le

1 x

M10

at

max

50

mm

fro

m C

ross

Jo

int

2 x

M10

at

max

50

mm

fro

m C

ross

Jo

int

40x4

0x4m

m

Rol

led

Stee

l Ang

le

Stif

fen

er

30x3

0x3m

m

Rol

led

Stee

l Ang

le

25x2

5x2.

5mm

R

olle

d St

eel A

ngle

25x2

5x2.

5mm

R

olle

d St

eel A

ngle

40x4

0x4m

m

Rol

led

Stee

l Ang

le

30x3

0x3m

m

Rol

led

Stee

l Ang

le

Con

tine

ousl

y W

elde

d on

Duc

t

Con

tine

ousl

y W

elde

d on

Duc

t

Con

tine

ousl

y W

elde

d on

Duc

t

Con

tine

ousl

y W

elde

d on

Duc

t

Con

tine

ousl

y W

elde

d on

Duc

t

-

50x5

0x5m

m

Rol

led

Stee

l Ang

le

40x4

0x4m

m

Rol

led

Stee

l Ang

leC

onti

neou

sly

Wel

ded

on D

uct

Con

tine

ousl

y W

elde

d on

Duc

t

601-

1000

1500

mm

1001

-120

015

00 m

m

1601

-200

015

00 m

m

1201

-160

015

00 m

m

-

2501

-300

015

00 m

m50

x50x

5mm

R

olle

d St

eel A

ngle

401-

600

1500

mm

Du

ct S

ize

Cro

ss J

oin

t

0-40

015

00 m

mM

8 nu

ts w

ith

bolt

s at

300

mm

M8

nuts

wit

h bo

lts

at 3

00m

m-

--

--

--

--

--

--

--

--





Issued: 29th


th May 2018

Valid to: 7th

May 2023

Table A5 Stainless steel ductwork specification – 120 minutes

RM

SW24

0: S

AFE

4 Fi

re R

ated

Rec

tang

ular

Wel

ded

Duc

t Sys

tem

- Bl

ack

& M

ild S

teel

Con

stru

ctio

n - 2

40 m

in

Stan

dard

Duc

tSh

eet

Gau

ge

Leng

thTh

ickn

ess

Type

/ Ra

ting

Fast

enin

gTi

ebar

Re-in

forc

emen

tTy

pe/

Rati

ngSp

acin

gFa

sten

ing

Corn

ers

16ga

1.40

mm

16ga

1.40

mm

16ga

1.40

mm

16ga

1.40

mm

16ga

1.40

mm

16ga

1.40

mm

16ga

1.40

mm

16ga

1.40

mm

Coat

ing

of d

uct e

xter

nally

with

Red

Oxi

de P

rimer

& G

alva

nic

base

pai

nt (O

ptio

nal)

Duc

ts m

ay b

e w

elde

d to

geat

her a

t cro

ss jo

ints

. Whe

re n

uts

and

bolts

are

util

ized

, int

umes

cent

fire

rate

d ga

sket

is a

pplie

d be

twee

n m

atin

g fla

nges

.

2001

- 25

0015

00 m

m50

x50x

5mm

Ro

lled

Stee

l Ang

leCo

ntin

eous

ly

Wel

ded

on D

uct

2 x

M10

at m

ax

50m

m fr

om C

ross

J o

int

30x3

0x3m

m

Rolle

d St

eel A

ngle

Max

630

mm

to

Join

t or S

tiff.

Stic

h W

eld

or M

ig

Tack

Wel

ded

at

200m

m c

entr

es

Wel

ded

at

Corn

ers

40x4

0x4m

m

Rolle

d St

eel A

ngle

Max

630

mm

to

Join

t or S

tiff.

Stic

h W

eld

or M

ig

Tack

Wel

ded

at

200m

m c

entr

es

Wel

ded

at

Corn

ers

- -

- -

--

--

M8

nuts

with

bo

lts a

t 300

mm

50x5

0x5m

m

Rolle

d St

eel A

ngle

Wel

ded

at

Corn

ers

M8

nuts

with

bo

lts a

t 300

mm

40x4

0x4m

m

Rolle

d St

eel A

ngle

Max

630

mm

to

Join

t or S

tiff.

Stic

h W

eld

or M

ig

Tack

Wel

ded

at

200m

m c

entr

es

Max

630

mm

to

Join

t or S

tiff.

Stic

h W

eld

or M

ig

Tack

Wel

ded

at

200m

m c

entr

es

Wel

ded

at

Corn

ers

M8

nuts

with

bo

lts a

t 300

mm

50x5

0x5m

m

Rolle

d St

eel A

ngle

Max

630

mm

to

Join

t or S

tiff.

Stic

h W

eld

or M

ig

Tack

Wel

ded

at

200m

m c

entr

es

Wel

ded

at

Corn

ers

2501

-300

015

00 m

m50

x50x

5mm

Ro

lled

Stee

l Ang

leCo

ntin

eous

ly

Wel

ded

on D

uct

2 x

M10

at m

ax

50m

m fr

om C

ross

J o

int

M8

nuts

with

bo

lts a

t 300

mm

1601

-200

015

00 m

m40

x40x

4mm

Ro

lled

Stee

l Ang

leCo

ntin

eous

ly

Wel

ded

on D

uct

1 x

M10

at m

ax

50m

m fr

om C

ross

J o

int

1 x

M10

at m

ax

50m

m fr

om C

ross

J o

int

Cont

ineo

usly

W

elde

d on

Duc

t-

1201

-160

015

00 m

m40

x40x

4mm

Ro

lled

Stee

l Ang

leCo

ntin

eous

ly

Wel

ded

on D

uct

M8

nuts

with

bo

lts a

t 300

mm

M8

nuts

with

bo

lts a

t 300

mm

401-

600

1500

mm

25x2

5x2.

5mm

Ro

lled

Stee

l Ang

leCo

ntin

eous

ly

Wel

ded

on D

uct

-M

8 nu

ts w

ith

bolts

at 3

00m

m

601-

1000

1500

mm

30x3

0x3m

m

Rolle

d St

eel A

ngle

Cont

ineo

usly

W

elde

d on

Duc

t-

1001

-120

015

00 m

m30

x30x

3mm

Ro

lled

Stee

l Ang

le

Duc

t Si

zeCr

oss

Join

tSt

iffen

er

0-40

015

00 m

m25

x25x

2.5m

m

Rolle

d St

eel A

ngle

Cont

ineo

usly

W

elde

d on

Duc

t-

M8

nuts

with

bo

lts a

t 300

mm

--

--





Issued: 29th


th May 2018

Valid to: 7th

May 2023

Table A6 Stainless steel ductwork specification – 240 minutes

RSSL

120:

SA

FE4

Fire

Rat

ed R

ecta

ngul

ar D

uct S

yste

m -

Stai

nles

s St

eel C

onst

ruct

ion

- 120

min

Stan

dard

Duc

tSh

eet

Gau

ge

Leng

thTh

ickn

ess

Type

/ Ra

ting

Fast

enin

gTi

ebar

Re-in

forc

emen

tTy

pe/

Rati

ngSp

acin

gFa

sten

ing

Corn

ers

24ga

4.8m

m R

ivet

@

150m

m-

M8

Clam

p at

--

--

0.60

mm

Spot

Wel

d @

100

mm

-30

0mm

--

--

22ga

4.8m

m R

ivet

@

150m

m-

M8

Clam

p at

--

--

0.80

mm

Spot

Wel

d @

100

mm

-30

0mm

--

--

22ga

4.8m

m R

ivet

@

150m

m-

M8

Clam

p at

--

--

0.80

mm

Spot

Wel

d @

100

mm

-30

0mm

--

--

22ga

4.8m

m R

ivet

@

150m

m-

M8

Clam

p at

--

--

0.80

mm

Spot

Wel

d @

100

mm

-30

0mm

--

--

20ga

4.8m

m R

ivet

@

150m

mM

8 Cl

amp

at

1.0

mm

Spot

Wel

d @

100

mm

300m

m

20ga

4.8m

m R

ivet

@

150m

mM

8 Cl

amp

at

1.0

mm

Spot

Wel

d @

100

mm

300m

m

18ga

4.8m

m R

ivet

@

150m

mM

8 Cl

amp

at

1.2m

mSp

ot W

eld

@ 1

00m

m30

0mm

18ga

4.8m

m R

ivet

@

150m

mM

8 nu

ts w

ith b

olts

at

1.2m

mSp

ot W

eld

@ 1

00m

m30

0mm

Bolte

d w

ith M

8 bo

lts

and

nuts

or w

elde

d

4.8m

m R

ivet

or

wel

ded

Max

750

mm

to jo

int

or s

tiff

4.8m

m R

ivet

150

mm

0r

spo

t wel

ded

at

100m

m25

01-3

000

1500

mm

40m

m S

AFE4

Slip

-on

flang

e - J

6

2 x

M10

at m

ax

50m

m fr

om C

ross

Jo

int

50x5

0x5m

m A

ngle

- S5

4.8m

m R

ivet

150

mm

0r

spo

t wel

ded

at

100m

m

4.8m

m R

ivet

150

mm

0r

spo

t wel

ded

at

100m

m

4.8m

m R

ivet

or

wel

ded

2001

-250

015

00 m

m40

mm

SAF

E4 S

lip-o

n fla

nge

- J6

1 x

M10

at m

ax

50m

m fr

om C

ross

Jo

int

50x4

0x1.

5mm

ang

le

w/

safe

edg

e - S

3M

ax 7

50m

m to

join

t or

stif

f

4.8m

m R

ivet

150

mm

0r

spo

t wel

ded

at

100m

m

1601

-200

015

00 m

m40

mm

SAF

E4 S

lip-o

n fla

nge

- J5

1 x

M10

at m

ax

50m

m fr

om C

ross

Jo

int

50x4

0x1.

5mm

ang

le

w/

safe

edg

e - S

3M

ax 7

50m

m to

join

t or

stif

f

Duc

t Si

zeCr

oss

Join

t /

Conn

ecto

rSt

iffen

er

0-40

015

00 m

m20

mm

SAF

E4 S

lip-o

n fla

nge

- J2

4.8m

m R

ivet

or

wel

ded

801

- 100

015

00 m

m

401-

600

1500

mm

20m

m S

AFE4

Slip

-on

flang

e - J

2

601-

800

1500

mm

30m

m S

AFE4

Slip

-on

flang

e - J

3

30m

m S

AFE4

Slip

-on

flang

e - J

4

1001

- 16

0015

00 m

m40

mm

SAF

E4 S

lip-o

n fla

nge

- J5

50x4

0x1.

2mm

ang

le

w/

safe

edg

e - S

3

1 x

M10

at m

ax

50m

m fr

om C

ross

J o

int

Max

750

mm

to jo

int

or s

tiff





Issued: 29th


th May 2018

Valid to: 7th

May 2023

Table A7 Stainless steel welded ductwork specification – 120 minutes

RSSL

240:

SA

FE4

Fire

Rat

ed R

ecta

ngul

ar D

uct S

yste

m -

Stai

nles

s St

eel C

onst

ruct

ion

- 240

min

Stan

dard

Duc

tSh

eet

Gau

ge

Leng

thTh

ickn

ess

Type

/ Ra

ting

Fast

enin

gTi

ebar

Re-in

forc

emen

tTy

pe/

Rati

ngSp

acin

gFa

sten

ing

Corn

ers

22ga

4.8m

m R

ivet

@

150m

m-

M8

Clam

p at

--

--

0.80

mm

Spot

Wel

d @

100

mm

-30

0mm

--

--

22ga

4.8m

m R

ivet

@

150m

m-

M8

Clam

p at

--

--

0.80

mm

Spot

Wel

d @

100

mm

-30

0mm

--

--

22ga

4.8m

m R

ivet

@

150m

m-

M8

Clam

p at

--

--

0.80

mm

Spot

Wel

d @

100

mm

-30

0mm

--

--

22ga

4.8m

m R

ivet

@

150m

m-

M8

Clam

p at

--

--

0.80

mm

Spot

Wel

d @

100

mm

-30

0mm

--

--

20ga

4.8m

m R

ivet

@

150m

mM

8 Cl

amp

at

1.0

mm

Spot

Wel

d @

100

mm

300m

m

18ga

4.8m

m R

ivet

@

150m

mM

8 Cl

amp

at

1.2m

mSp

ot W

eld

@ 1

00m

m30

0mm

18ga

4.8m

m R

ivet

@

150m

mM

8 Cl

amp

at

1.2m

mSp

ot W

eld

@ 1

00m

m30

0mm

18ga

4.8m

m R

ivet

@

150m

mM

8 nu

ts w

ith b

olts

at

1.2m

mSp

ot W

eld

@ 1

00m

m30

0mm

Bolte

d w

ith M

8 bo

lts

and

nuts

or w

elde

d

4.8m

m R

ivet

or

wel

ded

2501

-300

015

00 m

m40

mm

SAF

E4 S

lip-o

n fla

nge

- J6

2 x

M10

at m

ax

50m

m fr

om C

ross

Jo

int

50x5

0x5m

m A

ngle

- S5

Max

630

mm

to jo

int

or s

tiff

4.8m

m R

ivet

150

mm

0r

spo

t wel

ded

at

100m

m

4.8m

m R

ivet

150

mm

0r

spo

t wel

ded

at

100m

m

4.8m

m R

ivet

or

wel

ded

2001

-250

015

00 m

m40

mm

SAF

E4 S

lip-o

n fla

nge

- J6

2 x

M10

at m

ax

50m

m fr

om C

ross

Jo

int

50x4

0x1.

2mm

ang

le

w/

safe

edg

e - S

3M

ax 6

30m

m to

join

t or

stif

f

4.8m

m R

ivet

150

mm

0r

spo

t wel

ded

at

100m

m

1601

-200

015

00 m

m40

mm

SAF

E4 S

lip-o

n fla

nge

- J5

1 x

M10

at m

ax

50m

m fr

om C

ross

Jo

int

50x4

0x1.

5mm

ang

le

w/

safe

edg

e - S

3M

ax 6

30m

m to

join

t or

stif

f

4.8m

m R

ivet

or

wel

ded

801

- 100

015

00 m

m40

mm

SAF

E4 S

lip-o

n fla

nge

- J5

1001

- 16

0015

00 m

m40

mm

SAF

E4 S

lip-o

n fla

nge

- J5

1 x

M10

at m

ax

50m

m fr

om C

ross

J o

int

50x4

0x1.

5mm

ang

le

w/

safe

edg

e - S

3M

ax 6

30m

m to

join

t or

stif

f

4.8m

m R

ivet

150

mm

0r

spo

t wel

ded

at

100m

m

401-

600

1500

mm

30m

m S

AFE4

Slip

-on

flang

e - J

3

601-

800

1500

mm

30m

m S

AFE4

Slip

-on

flang

e - J

4

Duc

t Si

zeCr

oss

Join

tSt

iffen

er

0-40

015

00 m

m20

mm

SAF

E4 S

lip-o

n fla

nge

- J2





Issued: 29th


th May 2018

Valid to: 7th

May 2023

Table A8 Stainless steel welded ductwork specification – 240 minutes

RSSW

120:

SAFE

4 Fi

re R

ated

Rec

tang

ular

Wel

ded

Duct

Syst

em -

Stai

nles

s Ste

el C

onst

ruct

ion

- 120

min

Stan

dard

Duc

tSh

eet G

auge

Leng

thTh

ickne

ssTy

pe/ R

atin

gFa

sten

ing

Tieb

arRe

-info

rcem

ent

Type

/ Rat

ing

Spac

ing

Fast

enin

gSe

alin

gCo

rner

s

20ga

1.00

mm

20ga

1.00

mm

20ga

1.00

mm

18ga

1.20

mm

18ga

1.20

mm

18ga

1.20

mm

18ga

1.20

mm

All A

cces

sorie

s inc

ludi

ng ri

vets

,thre

aded

bar

s, bo

lts a

nd n

uts u

sed

for d

uct f

abric

atio

n sh

all b

e St

ainl

ess S

teel

Duct

s may

be

weld

ed to

geat

her a

t cro

ss jo

ints

. Whe

re n

uts a

nd b

olts

are

util

ized,

intu

mes

cent

fire

rate

d ga

sket

is a

pplie

d be

twee

n m

atin

g fla

nges

.

2001

-300

015

00 m

m50

x50x

5mm

RSA

Cont

ineo

usly

Wel

ded

on D

uct

2 x M

10 a

t max

50

mm

from

Cro

ss

Join

t

M8

nuts

with

bo

lts a

t 300

mm

30x3

0x3m

m R

SAM

ax 6

30m

m to

Jo

int o

r Stif

f.

Stich

Wel

d or

Mig

Ta

ck W

elde

d at

20

0mm

cent

res

Wel

ded

at

Corn

ers

M8

nuts

with

bo

lts a

t 300

mm

M8

nuts

with

bo

lts a

t 300

mm

50x5

0x5m

m R

SAM

ax 6

30m

m to

Jo

int o

r Stif

f.

Stich

Wel

d or

Mig

Ta

ck W

elde

d at

20

0mm

cent

res

Wel

ded

at

Corn

ers

40x4

0x4m

m R

SAM

ax 6

30m

m to

Jo

int o

r Stif

f.

Stich

Wel

d or

Mig

Ta

ck W

elde

d at

20

0mm

cent

res

Wel

ded

at

Corn

ers

-16

01-2

000

1500

mm

40x4

0x4m

m R

SACo

ntin

eous

ly W

elde

d on

Duc

t

1 x M

10 a

t max

50

mm

from

Cro

ss

Join

t

1201

-160

015

00 m

m30

x30x

3mm

RSA

Cont

ineo

usly

Wel

ded

on D

uct

1 x M

10 a

t max

50

mm

from

Cro

ss

Join

t

M8

nuts

with

bo

lts a

t 300

mm

601-

1000

1500

mm

30x3

0x3m

m R

SACo

ntin

eous

ly W

elde

d on

Duc

t-

M8

nuts

with

bo

lts a

t 300

mm

1001

-120

015

00 m

m30

x30x

3mm

RSA

Cont

ineo

usly

Wel

ded

on D

uct

-

M8

nuts

with

bo

lts a

t 300

mm

Duct

Size

Cros

s Joi

ntSt

iffen

er

0-40

015

00 m

m25

x25x

2.5m

m R

SACo

ntin

eous

ly W

elde

d on

Duc

t-

M8

nuts

with

bo

lts a

t 300

mm

401-

600

1500

mm

25x2

5x2.

5mm

RSA

Cont

ineo

usly

Wel

ded

on D

uct

-

--

--

--

--

--

--

--

-- -

- - - -

-





Issued: 29th


th May 2018

Valid to: 7th

May 2023

Table A9 Galvanised steel circular and flat oval ductwork specifications – 120 minutes

RSSW

240:

SAF

E4 F

ire R

ated

Rec

tang

ular

Wel

ded

Duct

Sys

tem

- St

ainl

ess S

teel

Con

stru

ctio

n - 2

40m

in

Stan

dard

Duc

tSh

eet G

auge

Leng

thTh

ickn

ess

Type

/ Ra

ting

Fast

enin

gTi

ebar

Re-in

forc

emen

tTy

pe/

Ratin

gSp

acin

gFa

sten

ing

Corn

ers

20ga

1.00

mm

20ga

1.00

mm

20ga

1.00

mm

18ga

1.20

mm

18ga

1.20

mm

18ga

1.20

mm

18ga

1.20

mm

All A

cces

sorie

s in

clud

ing

rivet

s,th

read

ed b

ars,

bol

ts a

nd n

uts

used

for d

uct f

abric

atio

n sh

all b

e St

ainl

ess

Stee

lDu

cts

may

be

wel

ded

toge

athe

r at c

ross

join

ts. W

here

nut

s an

d bo

lts a

re u

tilize

d, in

tum

esce

nt fi

re ra

ted

gask

et is

app

lied

betw

een

mat

ing

flang

es.

Wel

ded

at

Corn

ers

M8

nuts

with

bo

lts a

t 300

mm

M8

nuts

with

bo

lts a

t 300

mm

50x5

0x5m

m

Rolle

d St

eel A

ngle

Max

630

mm

to

Join

t or S

tiff.

Stic

h W

eld

or M

ig

Tack

Wel

ded

at

200m

m c

entre

s

1601

-200

015

00 m

m40

x40x

4mm

Ro

lled

Stee

l Ang

leCo

ntin

eous

ly

Wel

ded

on D

uct

1 x

M10

at m

ax

50m

m fr

om C

ross

Jo

int

2001

-300

015

00 m

m50

x50x

5mm

Ro

lled

Stee

l Ang

leCo

ntin

eous

ly

Wel

ded

on D

uct

2 x

M10

at m

ax

50m

m fr

om C

ross

Jo

int

30x3

0x3m

m

Rolle

d St

eel A

ngle

Max

630

mm

to

Join

t or S

tiff.

Stic

h W

eld

or M

ig

Tack

Wel

ded

at

200m

m c

entre

s

Wel

ded

at

Corn

ers

40x4

0x4m

m

Rolle

d St

eel A

ngle

Max

630

mm

to

Join

t or S

tiff.

Stic

h W

eld

or M

ig

Tack

Wel

ded

at

200m

m c

entre

s

Wel

ded

at

Corn

ers

--

--

1201

-160

015

00 m

m30

x30x

3mm

Ro

lled

Stee

l Ang

leCo

ntin

eous

ly

Wel

ded

on D

uct

1 x

M10

at m

ax

50m

m fr

om C

ross

Jo

int

1001

-120

015

00 m

m30

x30x

3mm

Ro

lled

Stee

l Ang

leCo

ntin

eous

ly

Wel

ded

on D

uct

1 x

M10

at m

ax

50m

m fr

om C

ross

Jo

int

M8

nuts

with

bo

lts a

t 300

mm

M8

nuts

with

bo

lts a

t 300

mm

M8

nuts

with

bo

lts a

t 300

mm

--

--

--

--

M8

nuts

with

bo

lts a

t 300

mm

601-

1000

1500

mm

30x3

0x3m

m

Rolle

d St

eel A

ngle

Cont

ineo

usly

W

elde

d on

Duc

t-

401-

600

1500

mm

25x2

5x2.

5mm

Ro

lled

Stee

l Ang

leCo

ntin

eous

ly

Wel

ded

on D

uct

-

Duct

Size

Cros

s Joi

ntSt

iffen

er

0-40

015

00 m

m25

x25x

2.5m

m

Rolle

d St

eel A

ngle

Cont

ineo

usly

W

elde

d on

Duc

t-

M8

nuts

with

bo

lts a

t 300

mm

--

--





Issued: 29th


th May 2018

Valid to: 7th

May 2023

Table A10 Galvanised steel circular and flat oval ductwork specifications – 240 minutes

CGIL1

20: S

AFE4

Fire

Rat

ed C

ircul

ar &

Ova

l Duc

t Sys

tem

- Ga

lvan

ised

Stee

l Con

stru

ctio

n - 1

20m

in

Shee

t Gau

ge

Type

Stan

dard

Leng

thTh

ickne

ssTy

pe/ R

atin

gFa

sten

ing

Re-in

forc

emen

tTy

pe/ R

atin

gSp

acin

gFa

sten

ing

Stra

ight

Seam

ed

1220

mm

0.80

mm

4.8m

m R

ivet

@20

0mm

Spira

l Wou

nd Se

am30

00 m

m0.

60 m

m o

r Wel

ded

@

150m

m

Stra

ight

Seam

ed

1220

mm

0.80

mm

4.8m

m R

ivet

@20

0mm

Spira

l Wou

nd Se

am30

00 m

m0.

60 m

m o

r Wel

ded

@

150m

m

Stra

ight

Seam

ed

1220

mm

0.80

mm

4.8m

m R

ivet

@20

0mm

Spira

l Wou

nd Se

am30

00 m

m0.

80 m

m o

r Wel

ded

@

150m

m

Stra

ight

Seam

ed

1220

mm

1.00

mm

4.8m

m R

ivet

@20

0mm

Spira

l Wou

nd Se

am30

00 m

m0.

80 m

m o

r Wel

ded

@

150m

m

Stra

ight

Seam

ed

1220

mm

1.20

mm

4.8m

m R

ivet

@20

0mm

Spira

l Wou

nd Se

am15

00 m

m1.

00 m

m o

r Wel

ded

@

150m

m

Stra

ight

Seam

ed

1220

mm

1.20

mm

4.8m

m R

ivet

@20

0mm

Spira

l Wou

nd Se

am15

00 m

m1.

20 m

m o

r Wel

ded

@

150m

m

- -

Wel

ded,

bol

ted

or

4.8m

m R

ivet a

t 20

0mm

1001

- 15

0030

mm

dee

p fla

nge

30m

m D

eep

3mm

Ro

lled

Angl

e or

2X

M10

Tie

Rod

cros

s

Wel

ded,

bol

ted

or

4.8m

m R

ivet a

t 20

0mm

--

-

- -

- -

Max

750

mm

to jo

int

or st

iff

M8

Fast

enin

g bo

lt @

300m

m

M8

Fast

enin

g bo

lt @

300m

m

Max

750

mm

to jo

int

or st

iff

1501

-200

050

mm

dee

p fla

nge

50m

m D

eep

5mm

Ro

lled

Angl

e or

2X

M10

Tie

Rod

cros

s

Stiff

ener

0-40

0Sp

igot

Cou

plin

g4.

8mm

Rive

t @

300m

m

Stan

dard

Duc

t

--

-

Duct

Size

Cros

s Joi

nt

4.8m

m R

ivet

@30

0mm

M8

Fast

enin

g bo

lt @

300m

m

M8

Fast

enin

g bo

lt @

300m

m

401-

600

25 m

m d

eep

flang

e

601-

800

25 m

m d

eep

flang

e

801

- 100

030

mm

dee

p fla

nge





Issued: 29th


th May 2018

Valid to: 7th

May 2023

CGIL2

40: S

AFE4

Fire

Rat

ed C

ircul

ar &

Ova

l Duc

t Sys

tem

- Gal

vani

sed

Stee

l Con

stru

ctio

n - 2

40m

in

Shee

t Gau

ge

Type

Stan

dard

Leng

thTh

ickne

ssTy

pe/ R

atin

gFa

sten

ing

Re-in

forc

emen

tTy

pe/ R

atin

gSp

acin

gFa

sten

ing

Stra

ight

Seam

ed

1220

mm

0.80

mm

4.8m

m R

ivet

@20

0mm

Spira

l Wou

nd Se

am30

00 m

m0.

80 m

m o

r Wel

ded

@

150m

m

Stra

ight

Seam

ed

1220

mm

0.80

mm

4.8m

m R

ivet

@20

0mm

Spira

l Wou

nd Se

am30

00 m

m0.

80 m

m o

r Wel

ded

@

150m

m

Stra

ight

Seam

ed

1220

mm

0.80

mm

4.8m

m R

ivet

@20

0mm

Spira

l Wou

nd Se

am30

00 m

m0.

80 m

m o

r Wel

ded

@

150m

m

Stra

ight

Seam

ed

1220

mm

1.00

mm

4.8m

m R

ivet

@20

0mm

Spira

l Wou

nd Se

am30

00 m

m1.

00 m

m o

r Wel

ded

@

150m

m

Stra

ight

Seam

ed

1220

mm

1.20

mm

4.8m

m R

ivet

@20

0mm

Spira

l Wou

nd Se

am15

00 m

m1.

20 m

m o

r Wel

ded

@

150m

m

Stra

ight

Seam

ed

1220

mm

1.20

mm

4.8m

m R

ivet

@20

0mm

Spira

l Wou

nd Se

am15

00 m

m1.

20 m

m o

r Wel

ded

@

150m

m

Duct

Size

Stan

dard

Duc

tCr

oss J

oint

Stiff

ener

0-40

0Sp

igot

Cou

plin

g-

--

-

Wel

ded,

bol

ted

or

4.8m

m R

ivet a

t 20

0mm

401-

600

25 m

m d

eep

flang

e4.

8mm

Rive

t @

300m

m

601-

800

25 m

m d

eep

flang

eM

8 Fa

sten

ing

bolt

@30

0mm

801

- 100

030

mm

dee

p fla

nge

M8

Fast

enin

g bo

lt @

300m

m

30m

m D

eep

3mm

Ro

lled

Angl

e or

2X

M10

Tie

Rod

cros

s

Max

750

mm

to jo

int

or st

iff

Wel

ded,

bol

ted

or

4.8m

m R

ivet a

t 20

0mm

1001

- 15

0040

mm

dee

p fla

nge

M8

Fast

enin

g bo

lt @

300m

m

40m

m D

eep

3mm

Ro

lled

Angl

e or

2X

M10

Tie

Rod

cros

s

Max

750

mm

to jo

int

or st

iff

Wel

ded,

bol

ted

or

4.8m

m R

ivet a

t 20

0mm

1501

-200

050

mm

dee

p fla

nge

M8

Fast

enin

g bo

lt @

300m

m

50m

m D

eep

3mm

Ro

lled

Angl

e or

2X

M10

Tie

Rod

cros

s

Max

750

mm

to jo

int

or st

iff

--

-

--

-





Issued: 29th


th May 2018

Valid to: 7th

May 2023

Table A11 Mild/Black steel welded circular and flat oval ductwork specifications – 120 minutes

CMSW

120:

SAFE

4 Fire

Rat

ed C

ircul

ar &

Ova

l Wel

ded

Duct

Syst

em - M

ild/B

lack

Stee

l Con

stru

ctio

n - 1

20m

in

Shee

t Gau

ge

Type

Stan

dard

Leng

thTh

ickne

ssTy

pe/ R

atin

gFa

sten

ing

Re-in

forc

emen

tTy

pe/ R

atin

gSp

acin

gFa

sten

ing

0-40

0St

raig

ht W

elde

d Se

am12

20 m

m1.

40 m

m25

mm

dee

p fla

nge

Cont

ineo

usly

Wel

ded

Outs

ide

of

D uct

M8

Fast

enin

g bo

lt @

300m

m-

--

401-

600

Stra

ight

Wel

ded

Seam

12

20 m

m1.

40 m

m25

mm

dee

p fla

nge

Cont

ineo

usly

Wel

ded

Outs

ide

of

Duct

M8

Fast

enin

g bo

lt @

300m

m-

--

601-

800

Stra

ight

Wel

ded

Seam

12

20 m

m1.

40 m

m25

mm

dee

p fla

nge

Cont

ineo

usly

Wel

ded

Outs

ide

of

D uct

M8

Fast

enin

g bo

lt @

300m

m-

--

801

- 100

0St

raig

ht W

elde

d Se

am

1220

mm

1.40

mm

30 m

m d

eep

flang

eCo

ntin

eous

ly W

elde

d Ou

tsid

e of

D u

ct

M8

Fast

enin

g bo

lt @

300m

m-

--

1001

- 15

00St

raig

ht W

elde

d Se

am

1220

mm

1.40

mm

30 m

m d

eep

flang

eCo

ntin

eous

ly W

elde

d Ou

tsid

e of

D u

ct

M8

Fast

enin

g bo

lt @

300m

m

30x3

0x3.

0 Ro

lled

Stee

l Ang

le o

r 2X

M10

Tie

Rod

cros

s

Max

750

mm

to jo

int

or st

iff

Stich

Wel

d or

Mig

Ta

ck W

elde

d at

20

0mm

cent

res

1501

-200

0St

raig

ht W

elde

d Se

am

1220

mm

1.40

mm

50 m

m d

eep

flang

eCo

ntin

eous

ly W

elde

d Ou

tsid

e of

D u

ct

M8

Fast

enin

g bo

lt @

300m

m

30x3

0x3.

0 Ro

lled

Stee

l Ang

le o

r 2X

M10

Tie

Rod

cros

s

Max

750

mm

to jo

int

or st

iff

Stich

Wel

d or

Mig

Ta

ck W

elde

d at

20

0mm

cent

res

Duct

Size

Stan

dard

Duc

tCr

oss J

oint

Stiff

ener





Issued: 29th


th May 2018

Valid to: 7th

May 2023

Table A12 Mild/Black steel welded circular and flat oval ductwork specifications – 240 minutes

CMSW

240:

SAFE

4 Fire

Rat

ed C

ircul

ar &

Ova

l Wel

ded

Duct

Syst

em - M

ild/B

lack

Stee

l Con

stru

ctio

n - 2

40m

in

Shee

t Gau

ge

Type

Stan

dard

Leng

thTh

ickne

ssTy

pe/ R

atin

gFa

sten

ing

Re-in

forc

emen

tTy

pe/ R

atin

gSp

acin

gFa

sten

ing

0-40

0St

raig

ht W

elde

d Se

am12

20 m

m1.

40 m

m25

mm

dee

p fla

nge

Cont

ineo

usly

Wel

ded

Outs

ide

of

D uct

M8

Fast

enin

g bo

lt @

300m

m-

--

401-

600

Stra

ight

Wel

ded

Seam

12

20 m

m1.

40 m

m25

mm

dee

p fla

nge

Cont

ineo

usly

Wel

ded

Outs

ide

of

D uct

M8

Fast

enin

g bo

lt @

300m

m-

--

601-

800

Stra

ight

Wel

ded

Seam

12

20 m

m1.

40 m

m25

mm

dee

p fla

nge

Cont

ineo

usly

Wel

ded

Outs

ide

of

D uct

M8

Fast

enin

g bo

lt @

300m

m-

--

801

- 100

0St

raig

ht W

elde

d Se

am

1220

mm

1.40

mm

30 m

m d

eep

flang

eCo

ntin

eous

ly W

elde

d Ou

tsid

e of

D u

ct

M8

Fast

enin

g bo

lt @

300m

m-

--

1001

- 15

00St

raig

ht W

elde

d Se

am

1220

mm

1.40

mm

30 m

m d

eep

flang

eCo

ntin

eous

ly W

elde

d Ou

tsid

e of

D u

ct

M8

Fast

enin

g bo

lt @

300m

m

30x3

0x3.

0 Ro

lled

Stee

l Ang

le o

r 2X

M10

Tie

Rod

cros

s

Max

750

mm

to jo

int

or st

iff

Stich

Wel

d or

Mig

Ta

ck W

elde

d at

20

0mm

cent

res

1501

-200

0St

raig

ht W

elde

d Se

am

1220

mm

1.40

mm

50 m

m d

eep

flang

eCo

ntin

eous

ly W

elde

d Ou

tsid

e of

D u

ct

M8

Fast

enin

g bo

lt @

300m

m

30x3

0x3.

0 Ro

lled

Stee

l Ang

le o

r 2X

M10

Tie

Rod

cros

s

Max

750

mm

to jo

int

or st

iff

Stich

Wel

d or

Mig

Ta

ck W

elde

d at

20

0mm

cent

res

Duct

Size

Stan

dard

Duc

tCr

oss J

oint

Stiff

ener





Issued: 29th


th May 2018

Valid to: 7th

May 2023

Table A13 Stainless steel circular and flat oval ductwork specifications – 120 minutes

CSSL

120:

SAFE

4 Fire

Rat

ed C

ircul

ar &

Ova

l Duc

t Sys

tem

- Sta

inle

ss St

eel C

onst

ruct

ion

- 120

min

Shee

t Gau

ge

Type

Stan

dard

Leng

thTh

ickne

ssTy

pe/ R

atin

gFa

sten

ing

Re-in

forc

emen

tTy

pe/ R

atin

gSp

acin

gFa

sten

ing

Stra

ight

Seam

ed

1220

mm

0.80

mm

4.8m

m R

ivet

@20

0mm

Spira

l Wou

nd Se

am30

00 m

m0.

60 m

m o

r Wel

ded

@

150m

m

Stra

ight

Seam

ed

1220

mm

0.80

mm

4.8m

m R

ivet

@20

0mm

Spira

l Wou

nd Se

am30

00 m

m0.

60 m

m o

r Wel

ded

@

150m

m

Stra

ight

Seam

ed

1220

mm

0.80

mm

4.8m

m R

ivet

@20

0mm

Spira

l Wou

nd Se

am30

00 m

m0.

80 m

m o

r Wel

ded

@

150m

m

Stra

ight

Seam

ed

1220

mm

0.80

mm

4.8m

m R

ivet

@20

0mm

Spira

l Wou

nd Se

am30

00 m

m0.

80 m

m o

r Wel

ded

@

150m

m

Stra

ight

Seam

ed

1220

mm

1.00

mm

4.8m

m R

ivet

@20

0mm

Spira

l Wou

nd Se

am15

00 m

m1.

00 m

m o

r Wel

ded

@

150m

m

Stra

ight

Seam

ed

1220

mm

1.20

mm

4.8m

m R

ivet

@20

0mm

Spira

l Wou

nd Se

am15

00 m

m1.

00 m

m o

r Wel

ded

@

150m

m

30m

m D

eep

3mm

Ro

lled

Angl

e or

2X

M10

Tie

Rod

cros

s

Max

750

mm

to jo

int

or st

iffM

10 n

uts w

ith

wash

er

1501

-200

050

mm

dee

p fla

nge

M8

Fast

enin

g bo

lt @

300m

m

50m

m D

eep

5mm

Ro

lled

Angl

e or

2X

M10

Tie

Rod

cros

s

Max

750

mm

to jo

int

or st

iffM

10 n

uts w

ith

wash

er

801

- 100

030

mm

dee

p fla

nge

M8

Fast

enin

g bo

lt @

300m

m

1001

- 15

0030

mm

dee

p fla

nge

M8

Fast

enin

g bo

lt @

300m

m

401-

600

25 m

m d

eep

flang

e4.

8mm

Rive

t @

150m

m

601-

800

25 m

m d

eep

flang

eM

8 Fa

sten

ing

bolt

@30

0mm

Duct

Size

Stan

dard

Duc

tCr

oss J

oint

Stiff

ener

0-40

0Sp

igot

Cou

plin

g4.

8mm

Rive

t @

150m

m

--

-

--

-

--

-

--

-





Issued: 29th


th May 2018

Valid to: 7th

May 2023

Table A14 Stainless steel circular and flat oval ductwork specifications – 240 minutes

CSSL

240:

SAFE

4 Fire

Rat

ed C

ircul

ar &

Ova

l Duc

t Sys

tem

- Sta

inle

ss St

eel C

onst

ruct

ion

- 240

min

Shee

t Gau

ge

Type

Stan

dard

Leng

thTh

ickne

ssTy

pe/ R

atin

gFa

sten

ing

Re-in

forc

emen

tTy

pe/ R

atin

gSp

acin

gFa

sten

ing

Stra

ight

Seam

ed

1220

mm

0.80

mm

4.8m

m R

ivet

@20

0mm

Spira

l Wou

nd Se

am30

00 m

m0.

80 m

m o

r Wel

ded

@

150m

m

Stra

ight

Seam

ed

1220

mm

0.80

mm

4.8m

m R

ivet

@20

0mm

Spira

l Wou

nd Se

am30

00 m

m0.

80 m

m o

r Wel

ded

@

150m

m

Stra

ight

Seam

ed

1220

mm

0.80

mm

4.8m

m R

ivet

@20

0mm

Spira

l Wou

nd Se

am30

00 m

m0.

80 m

m o

r Wel

ded

@

150m

m

Stra

ight

Seam

ed

1220

mm

1.00

mm

4.8m

m R

ivet

@20

0mm

Spira

l Wou

nd Se

am30

00 m

m1.

00 m

m o

r Wel

ded

@

150m

m

Stra

ight

Seam

ed

1220

mm

1.20

mm

4.8m

m R

ivet

@20

0mm

Spira

l Wou

nd Se

am15

00 m

m1.

20 m

m o

r Wel

ded

@

150m

m

Stra

ight

Seam

ed

1220

mm

1.20

mm

4.8m

m R

ivet

@20

0mm

Spira

l Wou

nd Se

am15

00 m

m1.

20 m

m o

r Wel

ded

@

150m

m

-

Duct

Size

Stan

dard

Duc

tCr

oss J

oint

Stiff

ener

0-40

0Sp

igot

Cou

plin

g-

--

-

401-

600

25 m

m d

eep

flang

e4.

8mm

Rive

t @

300m

m-

-

M10

nut

s with

wa

sher

601-

800

25 m

m d

eep

flang

eM

8 Fa

sten

ing

bolt

@30

0mm

--

-

801

- 100

030

mm

dee

p fla

nge

M8

Fast

enin

g bo

lt @

300m

m

30m

m D

eep

3mm

Ro

lled

Angl

e or

2X

M10

Tie

Rod

cros

s

Max

750

mm

to jo

int

or st

iff

M10

nut

s with

wa

sher

1001

- 15

0030

mm

dee

p fla

nge

M8

Fast

enin

g bo

lt @

300m

m

40m

m D

eep

3mm

Ro

lled

Angl

e or

2X

M10

Tie

Rod

cros

s

Max

750

mm

to jo

int

or st

iffM

10 n

uts w

ith

wash

er

1501

-200

050

mm

dee

p fla

nge

M8

Fast

enin

g bo

lt @

300m

m

50m

m D

eep

3mm

Ro

lled

Angl

e or

2X

M10

Tie

Rod

cros

s

Max

750

mm

to jo

int

or st

iff





Issued: 29th


th May 2018

Valid to: 7th

May 2023

Table A15 Stainless steel welded circular and flat oval ductwork specifications – 120 minutes

CSSW

120:

SAFE

4 Fire

Rat

ed C

ircul

ar &

Ova

l Wel

ded

Duct

Syst

em - S

tain

less

Stee

l Con

stru

ctio

n - 1

20m

in

Shee

t Gau

ge

Type

Stan

dard

Leng

thTh

ickne

ssTy

pe/ R

atin

gFa

sten

ing

Re-in

forc

emen

tTy

pe/ R

atin

gSp

acin

gFa

sten

ing

0-40

0St

raig

ht W

elde

d Se

am12

20 m

m0.

80 m

m25

mm

dee

p fla

nge

Cont

ineo

usly

Wel

ded

Outs

ide

of

D uct

M8

Fast

enin

g bo

lt @

300m

m-

--

401-

600

Stra

ight

Wel

ded

Seam

12

20 m

m0.

80 m

m25

mm

dee

p fla

nge

Cont

ineo

usly

Wel

ded

Outs

ide

of

D uct

M8

Fast

enin

g bo

lt @

300m

m-

--

601-

800

Stra

ight

Wel

ded

Seam

12

20 m

m1.

00 m

m25

mm

dee

p fla

nge

Cont

ineo

usly

Wel

ded

Outs

ide

of

D uct

M8

Fast

enin

g bo

lt @

300m

m-

--

801

- 100

0St

raig

ht W

elde

d Se

am

1220

mm

1.00

mm

30 m

m d

eep

flang

eCo

ntin

eous

ly W

elde

d Ou

tsid

e of

D u

ct

M8

Fast

enin

g bo

lt @

300m

m-

--

1001

- 15

00St

raig

ht W

elde

d Se

am

1220

mm

1.00

mm

30 m

m d

eep

flang

eCo

ntin

eous

ly W

elde

d Ou

tsid

e of

D u

ct

M8

Fast

enin

g bo

lt @

300m

m 2

X M

10 T

ie R

od

cros

sM

ax 7

50m

m to

join

t or

stiff

Stich

Wel

d or

Mig

Ta

ck W

elde

d at

20

0mm

cent

res

1501

-200

0St

raig

ht W

elde

d Se

am

1220

mm

1.20

mm

50 m

m d

eep

flang

eCo

ntin

eous

ly W

elde

d Ou

tsid

e of

D u

ct

M8

Fast

enin

g bo

lt @

300m

m 2

X M

10 T

ie R

od

cros

sM

ax 7

50m

m to

join

t or

stiff

Stich

Wel

d or

Mig

Ta

ck W

elde

d at

20

0mm

cent

res

Duct

Size

Stan

dard

Duc

tCr

oss J

oint

Stiff

ener





Issued: 29th


th May 2018

Valid to: 7th

May 2023

Table A16 Stainless steel welded circular and flat oval ductwork specifications – 240 minutes

CSSW

240:

SAFE

4 Fire

Rat

ed C

ircul

ar &

Ova

l Wel

ded

Duct

Syst

em - S

tain

less

Stee

l Con

stru

ctio

n - 2

40m

in

Shee

t Gau

ge

Type

Stan

dard

Leng

thTh

ickne

ssTy

pe/ R

atin

gFa

sten

ing

Re-in

forc

emen

tTy

pe/ R

atin

gSp

acin

gFa

sten

ing

0-40

0St

raig

ht W

elde

d Se

am12

20 m

m0.

80 m

m25

mm

dee

p fla

nge

Cont

ineo

usly

Wel

ded

Outs

ide

of

Duct

M8

Fast

enin

g bo

lt @

300m

m-

--

401-

600

Stra

ight

Wel

ded

Seam

12

20 m

m0.

80 m

m25

mm

dee

p fla

nge

Cont

ineo

usly

Wel

ded

Outs

ide

of

Duct

M8

Fast

enin

g bo

lt @

300m

m-

--

601-

800

Stra

ight

Wel

ded

Seam

12

20 m

m1.

00 m

m25

mm

dee

p fla

nge

Cont

ineo

usly

Wel

ded

Outs

ide

of

Duct

M8

Fast

enin

g bo

lt @

300m

m-

--

801

- 100

0St

raig

ht W

elde

d Se

am

1220

mm

1.00

mm

30 m

m d

eep

flang

eCo

ntin

eous

ly W

elde

d Ou

tsid

e of

Du

ct

M8

Fast

enin

g bo

lt @

300m

m-

--

1001

- 15

00St

raig

ht W

elde

d Se

am

1220

mm

1.20

mm

30 m

m d

eep

flang

eCo

ntin

eous

ly W

elde

d Ou

tsid

e of

Du

ct

M8

Fast

enin

g bo

lt @

300m

m 2

X M

10 T

ie R

od

cros

sM

ax 7

50m

m to

join

t or

stiff

Stich

Wel

d or

Mig

Ta

ck W

elde

d at

20

0mm

cent

res

1501

-200

0St

raig

ht W

elde

d Se

am

1220

mm

1.20

mm

50 m

m d

eep

flang

eCo

ntin

eous

ly W

elde

d Ou

tsid

e of

Du

ct

M8

Fast

enin

g bo

lt @

300m

m 2

X M

10 T

ie R

od

cros

sM

ax 7

50m

m to

join

t or

stiff

Stich

Wel

d or

Mig

Ta

ck W

elde

d at

20

0mm

cent

res

Duct

Size

Stan

dard

Duc

tCr

oss J

oint

Stiff

ener





Issued: 29th


th May 2018

Valid to: 7th

May 2023

Table A17 Hanger specifications – galvanised steel - 120 minutes

Hang

ers a

nd B

eare

r Spe

cific

atio

n - G

alva

nize

d Du

ct C

onst

ruct

ion

Stan

dard

- 12

0 m

in

Stan

dard

Duc

tLe

ngth

Hang

er S

paci

ngHa

nger

Size

Slot

ted

Chan

nel

RSA

RSC

Duct

Size

Hang

ers a

nd B

eare

rs

0-40

012

20 m

m

1500

mm

M8

30x3

0x1.

7

40x4

0x4.

0

-

401-

600

1220

mm

50x5

0x5.

060

1-80

012

20 m

m

801

- 100

012

20 m

m40

x40x

2.5

60x6

0x6.

0

1001

- 16

0012

20 m

mM

1080

x80x

8.0

1601

-200

012

20 m

mM

1280

x40x

2.5

-20

01-2

500

1220

mm

M16

-70

x40

2501

-300

012

20 m

mM

18





Issued: 29th


th May 2018

Valid to: 7th

May 2023

Table A18 Hanger specifications – galvanised steel - 240 minutes

Hang

ers a

nd B

eare

r Spe

cific

atio

n - G

alva

nize

d Du

ct C

onst

ruct

ion

Stan

dard

- 24

0 m

in

Stan

dard

Duc

tLe

ngth

Hang

er S

paci

ngHa

nger

Size

Slot

ted

Chan

nel

RSA

RSC

M14

-M

18

M20

-

Hang

ers a

nd B

eare

rs

1500

mm

40x4

0x4.

0

1001

- 16

0012

20 m

m

1601

-200

012

20 m

m

2001

-250

012

20 m

m70

x40

-

M8

M22

M10

100x

50

M12

601-

800

1220

mm

801

- 100

012

20 m

m

2501

-300

012

20 m

m

0-40

012

20 m

m

Duct

Size

401-

600

1220

mm

30x3

0x1.

7

40x4

0x2.

5

80x4

0x2.

5

50x5

0x5.

0

60x6

0x6.

0

80x8

0x8.

0





Issued: 29th


th May 2018

Valid to: 7th

May 2023

Table A19 Hanger specifications – Mild/Black steel - 120 minutes

Hang

ers a

nd B

eare

r Spe

cific

atio

n - M

ild/B

lack

Ste

el D

uct C

onst

ruct

ion

Stan

dard

- 12

0 m

in

Stan

dard

Duc

tLe

ngth

Hang

er S

paci

ngHa

nger

Size

Slot

ted

Chan

nel

RSA

RSC

Duct

Size

Hang

ers a

nd B

eare

rs

0-40

012

20 m

m

1500

mm

40x4

0x4.

0

-

401-

600

1220

mm

601-

1000

1220

mm

30x3

0x1.

750

x50x

5.0

M8

M10

1001

-120

012

20 m

m80

x80x

8.0

1201

-160

012

20 m

mM

14

40x4

0x2.

5

60x6

0x6.

0

70x4

025

01-3

000

1220

mm

M20

-16

01-2

000

1220

mm

M16

80x4

0x2.

5

2001

- 25

0012

20 m

mM

18-





Issued: 29th


th May 2018

Valid to: 7th

May 2023

Table A20 Hanger specifications – Mild/Black steel - 240 minutes

Hang

ers a

nd B

eare

r Spe

cific

atio

n - M

ild/B

lack

Duc

t Con

stru

ctio

n St

anda

rd -

240

min

Stan

dard

Duc

tLe

ngth

Hang

er S

paci

ngHa

nger

Size

Slot

ted

Chan

nel

RSA

RSC

Duct

Size

Hang

ers a

nd B

eare

rs

0-40

012

20 m

m

1500

mm

M8

30x3

0x1.

740

x40x

4.0

-

401-

600

1220

mm

M10

50x5

0x5.

0

601-

1000

1220

mm

M12

40x4

0x2.

560

x60x

6.0

1001

-120

012

20 m

mM

1480

x80x

8.0

1201

-160

012

20 m

mM

1880

x40x

2.5

-16

01-2

000

1220

mm

M20

2001

- 25

0012

20 m

mM

24-

70x4

0

2501

-300

012

20 m

mM

2610

0x50





Issued: 29th


th May 2018

Valid to: 7th

May 2023

Table A21 Hanger specifications –Stainless steel - 120 minutes

Hang

ers a

nd B

eare

r Spe

cific

atio

n - S

tain

less

Ste

el D

uct C

onst

ruct

ion

Stan

dard

- 12

0 m

in

Stan

dard

Duc

tLe

ngth

Hang

er S

paci

ngHa

nger

Size

Slot

ted

Chan

nel

RSA

RSC

Duct

Size

Hang

ers a

nd B

eare

rs

0-40

012

20 m

m

1500

mm

M8

30x3

0x1.

7

40x4

0x4.

0

-

401-

600

1220

mm

50x5

0x5.

060

1-80

012

20 m

m

801

- 100

012

20 m

m40

x40x

2.5

60x6

0x6.

0

1001

- 16

0012

20 m

mM

1080

x80x

8.0

1601

-200

012

20 m

mM

1280

x40x

2.5

-20

01-2

500

1220

mm

M16

-70

x40

2501

-300

012

20 m

mM

18





Issued: 29th


th May 2018

Valid to: 7th

May 2023

Table A22 Hanger specifications –Stainless steel - 240 minutes

Hang

ers a

nd B

eare

r Spe

cific

atio

n - S

tain

less

Ste

el D

uct C

onst

ruct

ion

Stan

dard

- 24

0 m

in

Stan

dard

Duc

tLe

ngth

Hang

er S

paci

ngHa

nger

Size

Slot

ted

Chan

nel

RSA

RSC

Duct

Size

Hang

ers a

nd B

eare

rs

1220

mm

1500

mm

30x3

0x1.

740

x40x

4.0

801

- 100

012

20 m

m

1001

- 16

00

60x6

0x6.

0

0-40

0

M10

M12

80x8

0x8.

0

M8

-

40x4

0x2.

5

1220

mm

M18

80x4

0x2.

512

20 m

mM

14

1601

-200

0

-

1220

mm

401-

600

50x5

0x5.

0

601-

800

1220

mm

70x4

020

01-2

500

1220

mm

M20

-25

01-3

000

1220

mm

M22

100x

50





Issued: 29th


th May 2018

Valid to: 7th

May 2023

Appendix B - Figures 1 to 16 - Details of duct construction

Figure 1 SAFE4 Fire Rated Duct Installation Details - Horizontal Duct Installation Figure 2 SAFE4 Fire Rated Duct Installation Details - Vertical Duct Installation Figure 3 SAFE4 Fire Rated Duct Installation Details - Single layer insulated duct

Installation Figure 4 SAFE4 Fire Rated Duct Installation Details - Multi layer insulated duct

Installation Figure 5 OSTM SAFE4 Fire Rated Duct Construction - One Sided Duct Figure 6 DSTM SAFE4 Fire Rated Duct Construction - Two Sided Duct Figure 7 TSTM SAFE4 Fire Rated Duct Construction - Three Sided Duct Figure 8 RSTD-I SAFE4 Fire Rated Duct Construction - Internal Flanges and Stiffener

Fastening Figure 9 MSTM SAFE4 Fire Rated Duct Construction - Multipanel Duct Construction

Details Figure 10 RAPI SAFE4 Fire Rated Access Panel - Insulated Figure 11 RAPB SAFE4 Fire Rated Access Panel - Uninsulated Bolted Panel Figure 12 RAPIW SAFE4 Fire Rated Access Panel - Uninsulated Welded Panel Figure 13 RSAA SAFE4 Fire Rated Sound Attenuator Figure 14 RCDA SAFE4 Fire Rated Rectangular Balancing Damper Figure 15 RCDA-S SAFE4 Fire Rated Rectangular Balancing Damper - Sleeved Figure 16 CCDA SAFE4 Fire Rated Circular Balancing Damper





Issued: 29th


th May 2018

Valid to: 7th

May 2023

Figure 1 Horizontal duct installation details





Issued: 29th


th May 2018

Valid to: 7th

May 2023

Figure 2 Vertical duct installation





Issued: 29th


th May 2018

Valid to: 7th

May 2023

Figure 3 Insulated ducts – single layer insulation





Issued: 29th


th May 2018

Valid to: 7th

May 2023

Figure 4 Insulated ducts – double layer insulation





Issued: 29th


th May 2018

Valid to: 7th

May 2023

Figure 5 One sided duct arrangement





Issued: 29th


th May 2018

Valid to: 7th

May 2023

Figure 6 Two sided duct arrangement





Issued: 29th


th May 2018

Valid to: 7th

May 2023

Figure 7 Three sided duct arrangement





Issued: 29th


th May 2018

Valid to: 7th

May 2023

Figure 8 Ducts with internal flanges and stiffeners





Issued: 29th


th May 2018

Valid to: 7th

May 2023

Figure 9 Multiple panel duct construction





Issued: 29th


th May 2018

Valid to: 7th

May 2023

Figure 10 Access panel – insulated bolted panel





Issued: 29th


th May 2018

Valid to: 7th

May 2023

Figure 11 Access panel – uninsulated bolted panel





Issued: 29th


th May 2018

Valid to: 7th

May 2023

Figure 12 Access panel – uninsulated welded panel





Issued: 29th


th May 2018

Valid to: 7th

May 2023

Figure 13 Sound attenuator





Issued: 29th


th May 2018

Valid to: 7th

May 2023

Figure 14 Rectangular balancing damper





Issued: 29th


th May 2018

Valid to: 7th

May 2023

Figure 15 Rectangular balancing damper, sleeved





Issued: 29th


th May 2018

Valid to: 7th

May 2023

Figure 16 Circular balancing damper

certificate of approval no cf 761... · ccda safe4 fire rated circular balancing damper this...

Documents