lot 2 throsby, canberra regulatory reportcompleteconstructionsaust.com.au/wp-content/...4.5 exit...

Lot 2 Throsby, Canberra Regulatory Report Prepared by Sampson Wong SWA Consulting M. 0439 313 574 E. [email protected]

TABLE OF CONTENTS

EXECUTIVE SUMMARY ................................................................................................... 3

1.0 INTRODUCTION .................................................................................................. 4

2.0 FIRE PROTECTION ............................................................................................... 4

3.0 ACCESS AND EGRESS .......................................................................................... 5

4.0 SERVICES AND EQUIPMENT ............................................................................... 5

5.0 HEALTH AND AMENITY ...................................................................................... 6

6.0 ENERGY EFFICIENCY ........................................................................................... 7

7.0 ACCESS FOR PEOPLE WITH DISABILITIES .......................................................... 10

Date Reference No. of pages

Issue Prepared By Reviewed By

27.06.2017 2016066-04RR 11 c Sampson Wong Sampson Wong

EXECUTIVE SUMMARY

This report is intended to provide a review of the regulatory requirements of the proposed development, in relation to the National Construction Code. The following key issues have been identified (refer to the relevant sections of the report for further details);

1. Fire ratings of elements required to be confirmed. 2. Egress Distances and requirements 3. Treatment of windows on level 1 need to be considered in relation to its levels. 4. Fire services required;

a. Fire hydrants (refer to section for details) b. Portable fire extinguishers c. Smoke alarm and detection system d. Need to allocate a FIP as corridors etc will need interconnect sprinklers to

AS1670.1 5. Wall types etc required to ascertain fire ratings and sound ratings 6. Disabled access looks compliant, please note for class 2 buildings, there isn’t a

requirement to provide disabled accessible car parking bays. 7. Tactile indicators required to be provided. 8. Part J energy requirements to be further developed at detailed design 9. Bedrooms on level 1, will either need to be equipped with window restrictors or

screens

1.0 INTRODUCTION

The proposed development is 3 two storey apartment buildings.

Number of Storeys 2

Rise in Storeys 2

Classification 2 & 7a

Type of Construction Type B

Effective Height 3.6m

The report utilises the applicable provisions of the Building Code of Australia 2016. The report is intended as an overview of the relevant provisions of the Building Code of Australia for assistance only. Detailed drawings and associated review will still be required as the final design is developed.

This report is based upon the review of the following documentation:

Architectural drawing prepared by WBA, Drawing Numbers 16-003/- DA01 to DA20

2.0 FIRE PROTECTION

2.1 Fire Compartment Arrangements:

Based upon the rise in storeys and use of the Building, it is required to be Type B Construction.

The building should be constructed generally in accordance with the relevant provisions of Specification C1.1 of the BCA applicable to Type B Construction, which requires the following fire ratings: It has been assumed that this site is located within a greater site, but essentially considered as 1 site across the many buildings (the fire ratings has been assessed as such), but if they are to be considered as individual allotments, than fire ratings will change.

External Walls -/-/- but will need to be non-combustible

Fire Walls 90/90/90

Main Apartment Corridor 60/60/60

Walls Bounding Apartments 60/60/60

Floors 30/30/30

Walls, Beams, Columns Supporting Floors 60/-/-

Walls, Beams, Columns Supporting Roof -/-/-

Roof Non combustible

2.2 Fire Hazard Properties:

The fire hazard properties of fixed surface linings and mechanical ductwork will also need to be addressed within the detailed documentation phase pursuant to specification C1.10 Building Code of Australia.

2.3 Vertical Separation of openings in external walls:

This is not applicable as the building is not of Type A construction. So no requirement for spandrels.

2.4 Protection of Openings:

The location of all buildings on the site is such that no external opening is required to be protected by fire rated construction.

3.0 ACCESS AND EGRESS

3.1 Egress:

The egress provisions for the proposed building are provided by the following exits:

▪ Non Fire isolated Stairs ▪ External Doors

Other detailing issues that will need to be addressed include (as part of detailed design):

▪ Door Hardware ▪ Stair Construction ▪ Handrail and Balustrade construction

3.2 Exit Travel Distances:

- 6m from an exit from the sole occupant entry door.

- 20m from a single exit at the level of egress to a road or open space

- Alternate exits not more than 45m apart From our review egress provisions within the building will be compliant.

3.3 Balustrading and Handrail:

Balustrading to a height of 1000mm with a maximum opening of 125mm in any direction should be provided adjacent to balconies, landings, corridors etc where located adjacent to a change in level exceeding 1000mm. Where it is possible to fall more than 4m to the finished floor / ground surface below, the balustrade shall not contain any horizontal or near horizontal members that facilitate climbing. Where openable windows contain fall greater than 2.0m and the window is located less than 1.7m above the floor level, the window must be fixed with either;

- Secure screen

- Or window restrictors

4.0 SERVICES AND EQUIPMENT

4.1 Fire Hydrants:

A system of Fire Hydrants is required to be provided, based on the total floor area of the buildings.

However, if the buildings are fire separated as buildings (different to simply compartments) to less than 500m2, than a system of fire hydrants will not be required. To fire separate between a building, the fire separation must be separated through all horizontal layers of a building via a fire wall (so even fire rated elements such as slabs and ceilings will need to be separated by fire walls).

Based on the number of levels, a system of external hydrants can be adopted to cover the two levels, but pressures and flows will need to be ascertained, and be designed to meet 10l/s at 200kPa as a minimum (based on which type of hydrants are to be used).

4.2 Fire Hose Reels:

Not Required to BCA Clause E1.4 and AS2441. A system of fire hose reels are required to be provided in lieu.

4.3 Automatic Sprinkler Protection:

Not Required

4.4 Smoke Hazard Management:

▪ Smoke detection and alarm system ▪ Occupant warning system

4.5 Exit Signs and Emergency Lighting:

Emergency Lighting and Exit Signs indicating exit location paths of travel to exits to be provided in accordance with AS2293. Within Sole occupant units, exit signs and emergency lights are not required to be provided.

5.0 HEALTH AND AMENITY

Each apartment is required to be provided with the following:

▪ A kitchen sink and facilities for the preparation and cooking of food; and ▪ A bath or shower; and ▪ A closet pan and wash basin; and ▪ Clothes washing facilities comprising at least one wash tub and space for a

washing machine; and ▪ Clothes line of at least 7.5m, or space for one heat operated drying device

within the same space as the clothes washing.

5.1 Floor Wastes:

Floor wastes to be provided within bathrooms and laundries where located above another sole occupancy unit. The floor shall be sloped towards these wastes.

5.2 Light and Ventilation:

Natural light and ventilation is to be provided to all habitable rooms at a rate of 10% and 5% of the floor area of the rooms respectively.

5.3 Sound Transmission and Insulation:

Building elements require the following;

Location Notes Sound Insulation Requirement

Walls separating habitable rooms

Rw + Ctr ≥ 50

Walls separating habitable room and kitchen or bathroom

Wall must be of Discontinuous Construction

Rw + Ctr ≥ 50

Floor separating habitable rooms

Impact isolation required Rw + Ctr ≥ 50 Ln,w + Cl ≤ 62

Duct, soil, waste or water supply pipe, including pipes that is located in a floor or wall cavity, serves or passes through more than one room

Adjacent habitable room or Adjacent non-habitable room

Rw + Ctr ≥ 40 or

Rw + Ctr ≥ 25

Door to habitable room Rw ≥ 30

* Please note for walls requiring impact resistance an air gap between leafs of the wall construction is required to be provided.

6.0 ENERGY EFFICIENCY

6.1 Energy Efficiency:

The proposed site will be located in a climate zone 7. Roof and Ceiling Construction: Roofs and or Ceilings are to be constructed to provide an R rating of 3.7.

Where the layer of insulation is penetrated by the percentages as tabled below, additional upgrading of the remainder of the insulation level is required to be provided as follows:

Percentage of ceiling are uninsulated

Minimum R-Value of ceiling insulation required to satisfy J1.3(a)

2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0

Adjusted minimum R-Value of ceiling insulation required to compensate for loss of ceiling area insulation

0.5% to less than 1.0%

2.8 3.4 4.0 4.7 5.4 6.2 6.9


2.9 3.6 4.4 5.2 6.1 7.0


3.1 3.9 4.8 5.8 6.8


3.3 4.2 5.3 6.5


3.6 4.6 5.9


4.5 5.7


5.0

5.0% or more

Where roof lights are installed, we will require the size of roof lights and the depth of the shaft to work out the roof light shaft index and extent of glazing as per the table below which would dictate the glazing to be used.

Roof light shaft index

Constant Total area of roof lights serving the room or space as a percentage of the floor area of the room or space

Up to 2% More than 2% and up to 3%

More than 3% and up to 4%

More than 4% and up to 5%

Less than 0.5 SHGC Not more than 0.83

Not more than 0.57

Not more than 0.43 Not more than 0.34

Total U-Value

Not more than 8.5

Not more than 5.7


0.5 to less than 1.0

SHGC Not more than 0.83

Not more than 0.72


Total U-Value

Not more than 8.5

Not more than 5.7


1.0 to less than 2.5

SHGC Not more than 0.83

Not more than 0.83


Total U-Value

Not more than8.5

Not more than 5.7


2.5 or more SHGC Not more than 0.83

Not more than 0.83


Total U-Value

Not more than 8.5

Not more than 5.7


External Walls: External Walls are to be constructed to provide the following: (a) (i) Achieve a minimum Total R-Value of 2.8

Not permitted

(b) Where the only space for insulation is provided by a furring channel, top hat section, batten or the like – (i) Achieve a minimum Total R-Value of 1.4; and (ii) Satisfy glazing energy index increase in glazing performance

Floors: Floors are to achieve an R rating of 1.0. Glazing This section relates to the conductance and solar heat gain of the windows, taking into consideration of the type of window frame, orientation and whether there are overhangs / shadings. A glazing calculator will be required to be undertaken and results provided for assessment. Building Sealing: A Seal to restrict air infiltration must be fitted to each edge of the external doors and openable windows. The seals may be foam or compressible strip, fibrous seal or the like. The main entry doors must have either an airlock, or self-closing doors, or a revolving door. Miscellaneous exhaust fans must be fitted with a sealing device such as a self-closing damper. Time Switch:

Time switch must be provided to control each of the following; (i) Air Conditioning system of more than 10 Kw (ii) Ventilation system with an air flow rate of 1000 L/S (iii) Heating system of more than 10 Kw heating.

Interior Artificial Lighting: The maximum design illumination load is not to exceed 5W/m2

Artificial lighting around the lighting. If it exceeds a total of 100W must;

▪ Be controlled by a day light sensor or time switch and ▪ Be controlled by a motion detection or have an average light source

efficiency of not less than 60 Watts / Lumens.

7.0 ACCESS FOR PEOPLE WITH DISABILITIES

7.1 Applicability:

The following is required to be provided with disabled accessible space;

• From the pedestrian entrance to at least 1 floor containing Single Occupancy Units and to the entrance door of all Single Occupancy Units on that floor, and to at least one type of each common facility, such as gyms, shops, laundries (shared), gaming rooms etc.

7.2 Access to buildings:

Access must be provided to a site from; 1. The main points of pedestrian entry at the allotment boundary 2. From another building (required to be accessible) linked by a pedestrian link 3. From any accessible car parking spaces

And where a pedestrian entry contains multiple doors, the following is required;

• Entrance containing not more than 3 doors, at least one of the door leaves must be accessible.

• Where an entrance contains more than 3 doors, not less than 50% of the door leaves must be accessible.

A door is considered to be accessible if it is automatic (open and closing) or is more than 850mm in clear opening width and contains the required door circulation space.

From preliminary review this has been achieved and access is provided to all ground level apartments.

7.3 Accessibility within Building: The requirements are to only provide access to the entry of each apartment. Confirmation required that the doors to ground floor and ground floor apartments contain the required 850mm minimum clear opening.

7.4 Car parking:

No requirements for apartments

7.5 Tactile indicators:

Tactile indicators are required to be provided to warn occupants of all stairs (except Fire Isolated stairs) and ramps regardless of public nature or private environment and where an overhead obstruction occurs less than 2.0m above the finished floor level.

7.6 Stair locations: Stairs shall be constructed as follows: a) Where the intersection is at the property boundary, the stair shall be set back

by a minimum of 900mm so that the handrail TGSIs do not protrude into the transverse path of travel.

b) Where the intersection is at an internal corridor, the stair shall be set back in 300mm, so the handrails do not protrude into transverse path of travel.

c) Stairs shall have opaque risers. d) Stair nosing shall not project beyond the face of the riser and the riser may be

vertical or have a splay backwards up to a maximum 25mm. e) Stair nosing profiles shall-

a. Have a sharp intersection; b. Be rounded up to 5mm radius; or c. Be chamfered up to 5mm x 5mm

f) At the nosing, each tread shall have a strip not less than 50mm and not more than 75mm deep across the full width of the path of travel. The strip may be set back a maximum of 15mm from the front of the nosing. The strip shall have a minimum luminance contrast of 30% to the background. Where the luminous contrasting strip is affixed to the surface of the tread, any change in level shall not exceed a difference of 5mm.

lot 2 throsby, canberra regulatory reportcompleteconstructionsaust.com.au/wp-content/...4.5 exit...

Documents