wbhs health sector guide 04

8/11/2019 WBHS Health Sector Guide 04

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The comprehensive

specification guide tohealthcare environments

The WHITE BOOKHealth sector guide

Appro

ved

b

yRIBA

This publication includes updated information,added since it was last printed.

Last updated 21/03/2014!


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www.british-gypsum.com/health Drywall Academy Tel: 0844 800 1991

Welcome to the WHITE BOOK Health sector guide.

The healthcare sector is currently facing one of its most challenging periods. New technology

systems are changing the way our primary care trusts work, bringing patient information together

across wide geographical gaps. These developments are reinvigorating the NHS and now the biggest

building scheme in NHS history is currently taking shape.

These changes have increased the need for well designed, well equipped, and well located primary

healthcare facilities and are generating a significant increase in construction activity.

The effects of the built environment on a patients health and wellbeing, and the mounting focus

on sustainability, is bringing a new range of complex planning, design and construction challenges

for the NHS, public sector and private companies. Part of the WHITE BOOK series, the WHITE BOOK

Health sector guide provides guidance and solutions that reflect the diversity of care pathways;

Home, Primary, Community, Hospital, Rehabilitation and Residential, theres a solution for every

situation.

There is significant need to future-proof buildings to cope with the challenges of multi-function

multi-occupancy departments, whilst ensuring the facility has a well designed internal environment

to motivate and uplift staff, and encourage rest and recovery in patients.

We hope you find this guide a useful addition to your technical library, but if you need any further

advice please contact our Saint-Gobain Technical Academy.


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1email: [email protected] www.british-gypsum.com/health

Contents

Selecting floors and

ceilingsIntroduction 92Solutions - key systems 93Solutions for concrete floors 94

Dense slab 94Precast concrete planks 95Trapezoidal decking 96

Thermal lining floor systems 97Solutions for timber floors 98Membrane solutions 99Construction details 100

Selecting acousticceilings

Introduction 108Acoustic design for hospitals 108Acoustic guidance for specific areas 109Guidance for plenum access 110HTM 60 performance categories 111Absorption classes 112Ceiling selector guide 112Ceiling systems 113

Gyprex 113Casoprano 113Gyptone 114Rigitone 116

Construction details 118

Encasements -fire protection

Introduction - Design and management 132Fire safety engineering 132Regulations 133Compartmentation 133Glasroc F FIRECASE 134Lining selection 136A/V tables 137Construction details 138

Flanking soundtransmission

Introduction 144Flanking sound transmission 144Air leakage 144Flanking details 145

British Gypsum Project Specification Managers

Regional map and contact details 148

Background and

theoryIntroduction 5Health Technical Memorandum (HTM) 5SpecSure lifetime system warranty 6Acoustics 7Fire prevention and resistance 7Sustainability 8Robustness of design 11GypWall systems 12Protection to partitions and linings 13Fixing to partitions and linings 14Construction details 15Finishes 18Indoor air quality 20

Selectingpartitions

Introduction 26Performance matrix 28Worked examples 30Selecting your partition type 31 Solutions up to Rw 42 dB 32 Solutions up to Rw 47 dB 34 Solutions up to Rw 50 dB 36 Solutions up to Rw 54 dB 38 Solutions up to Rw 59 dB 42

Solutions Rw 60 dB 44Hybrid solutions 46ShaftWall solutions 48Timber stud solutions 49Construction details 50

Mental healthpartitioning

Introduction 60Methods to increase partition performance 60GypWall systems 61GypWall EXTREME 62

Residential mental health partitioning 63Acute mental health partitioning 64Construction details 65

Selectingwall linings

Introduction 70Key systems 701 - External linings 73

Lightweight steel 74Masonry with GypLyner IWL 75Insulated panel systems 76

GypLyner IWL linings 77Masonry with GypLyner UNIVERSAL lining 78Masonry with DriLyner or Thistle plasters 79Timber frame linings 84

2 - Internal linings 86Construction details 87

1 5

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4

3

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2 www.british-gypsum.com/health Drywall Academy Tel: 0844 800 1991


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1B

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ground

and

theo

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Background

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Background and theory

Introduction 5

SpecSure lifetime system warranty 6

Acoustics 7

Fire prevention and resistance 7

Sustainability 8

Robustness of design 11

GypWall systems 12

Protection to partitions and linings 13

Fixing to partitions and linings 14


Finishes 18

Indoor air quality 20


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IntroductionThe changing face of healthcare in the United Kingdom will

place even greater emphasis on the need for estates and

services to provide the capability to meet the clinicians

needs and the patients aspirations in the 21st Century.

A strategic approach to creating the resilience required in

the NHS Estate has prompted a review of the Health

Technical Memorandum (HTM) documents that will provide

the appropriate guidance within nine core subject areas, as

shown in Table 1.1.

As the UKs leading supplier of internal wall and ceiling

systems, British Gypsum is dedicated to the provision of

innovative treatment and care environments that

encourage rest and recovery.

British Gypsum works closely with specifiers, contractors

and clients to ensure that its range of systems provide

consistently high quality environments that offer the best

whole-life value for money.

This guide details a portfolio of drylining systems developed

specifically to meet the requirements of modern healthcare

buildings.

It also takes the specifier through the regulations and

guidance that should be taken into account in order tospecify the appropriate internal solution to meet and

exceed the requirements.

All constructions that feature in this guide have been

extensively tested and have a proven track record in

healthcare buildings. It is important to note that the

system solutions and specifications presented in thisguide are intended for guidance purposes and are

British Gypsums interpretation of regulatory and guidance

requirements. The guide should be read in conjunction with

the Health Technical Memorandums, Health Building Notes,

and Building Regulations Approved Documents (or the

Scottish Technical Standards for Scotland).

This guide includes solutions for:

Internal partitions airborne sound

insulation between spaces, fireresistance and duty ratings

Wall linings sound insulation and

thermal performance

Separating floors and ceilings airborne

and impact sound insulation between

spaces and fire resistance

Acoustic ceilings reverberation time

and acoustic absorption

Encasements fire protection


Source: HTM 08-01 Acoustics

Table 1.1

Background

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SpecSure

Unique to British Gypsum, the SpecSurelifetime system warranty is designed to give youtotal confidence that the systems you have

chosen will meet the most rigorous of buildingrequirements.

All of our systems are developed using thehighest quality components designed to worktogether, and are specially developed to give youa lifetime of confidence.

SpecSure is more than just a performancewarranty. It means that the British Gypsumsystems you specify:

Have a guaranteed lifetime performance.

Have the technical expertise and experience of the

UKs leading drywall specialists behind it.

Have been tested in UKAS-accredited fire, acoustic and

structural test laboratories.

Have been site tested to demonstrate installation

integrity and simplicity.

Will be supported at every stage of the project by the

UKs leading on and off-site technical support

personnel.

Will perform to published parameters throughout the

life of each system.

Will be repaired or replaced by British Gypsum in the

unlikely event of system failure attributed to

unsatisfactory product / system performance.

I

IM

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Acoustics

Good acoustic design is fundamental to the quality of

healthcare buildings. The control of unwanted noise

improves patient privacy, dignity and sleep patterns; all key

conditions for healing. Good acoustic design also increases

the morale and comfort of healthcare professionals.

This guide was developed in conjunction with the guidance

provided in the Health Technical Memorandum HTM 08-01:

Acoustics. HTM 08-01 covers the acoustic design criteria

that are important for healthcare premises. This guide will

lead you through the acoustic requirements for each

internal element, providing solutions for:

Sound insulation between rooms

Attenuation of external sound to reduce the effects on

the individuals within the building

The control of reverberation through the properties of

acoustically absorptive materials

Each section of this guide will explain the calculation

process to arrive at the acoustic requirement for the specific

building element, according to HTM 08-01. British Gypsum

recommends that a qualified acoustic consultant be

appointed to check all acoustic specifications, details and

calculations made.

For more information on the principles of acoustics, please

refer to HTM 08-01, BS 8233 - The code of practice for sound

insulation and noise reduction for buildings, and the British

Gypsum WHITE BOOK Basic principles section, available todownload from www.british-gypsum.com

Fire prevention and resistance

Healthcare buildings are complex by nature and present

particularly challenging environments when it comes to

fire safety and planning, where patients have a high

dependence on the staff for their wellbeing.

There are about 6,000 fires every year in NHS buildings and

fire safety engineering has to consider a wide range of

environments and uses including large hospitals,ambulatory units, diagnostic and treatment centres etc.

It is necessary to greatly reduce the risk of fires occurring in

healthcare buildings and when a fire does occur, reduce the

risk of it spreading.

Guidance comes from FIRECODE, which has undergone a

review and replacement - under the guidance of the

National Fire Policy Advisory Group (NFPAG) - of existing

HTMs. The new suite of FIRECODES is set out in Table 1.2.

Building Regulations Approved Document B

All new building work in healthcare premises is subject to

approval under the building regulations.

B2: To ensure fire spread over the internal linings of the

buildings is inhibited.

B3: To ensure the stability of buildings in the event of a fire;

to ensure that there is sufficient degree of fire separation

within buildings and between adjoining buildings to inhibit

the unseen spread of fire and smoke in concealed spaces in

buildings.

For Scotland, section 2 of the non-domestic Technical

Handbook is relevant.

Health Technical Memorandum 05-02

Health Technical Memorandum 05-02 came into effect

from April 2007 and is a code of practice that recognises

the special requirements of fire precautions in the design of

healthcare premises. The document provides guidance on

the design of fire precautions in new healthcare buildings

and major extensions to existing healthcare buildings.


The fire resistance and sound insulation performances in

this guide are for imperforate partitions, walls and ceilings

incorporating boards with joints taped and filled, or

skimmed according to British Gypsums recommendations.

The quoted performances are achieved only if British

Gypsum components are used throughout, and the

Companys fixing recommendations are strictly observed.

HTM 05

01 Managing healthcare fire safety

02 Guidance in support of functional provisions

03 Operational provisions

Part A General fire precautions

Part B Fire detection and alarm systems

Part C Texti les and furnishings Part D Commercial enterprises

Part E Escape lifts

Part F Arson prevention

Part G Laboratories

Part H Reducing unwanted fire signals

Part L Fire statistics

Table 1.2 - FIRECODES

Source: HTM 05

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Sustainable design of healthcare buildings

The Government has focused its capital investment in healthcare

buildings on the creation of advanced, eco-efficientbuildings, which allow for significant savings on running

costs as well as a reduced impact on the environment.

British Gypsum recognises that manufacturing and

construction is often perceived to make heavy demands on

the environment. We have committed to minimising our

impact on valuable natural resources, striving to provide

products and systems that enable customers to build in a

more sustainable and responsible way.

Delivering sustainable buildings relies on the balancing of

social, environmental and economic objectives. Our

sustainability programme highlights the importance of

environmental management, it focuses on the conservation

of the environment and natural resources through a

managed programme of waste reduction, pollution

prevention, energy efficiency and the manufacture of

sustainable construction products and systems. Although

environmental management is a key concern our

programme also covers the social and economic pillars of

sustainability.


Waste hierarchy process

Source: Environment Agency

Material Product

Start here

WASTE

ONLY

Eliminate Reduce Re-use Recycle Dispose

Avoid producingwaste in the

first place

Minimisethe amount

of waste youproduce

Use items asmany times as

possible

Recycle whatyou can only

after youhave re-used it

Dispose ofwhats left in a

responsible way

Waste management

In developing a waste management strategy, the wastehierarchy framework has become the cornerstone for

sustainable waste management, setting out the order in

which options for waste management should be

considered based on environmental impact.

Waste costs are usually calculated based on the costs to

recycle or send to landfill. There are, however, a number of

hidden costs that need to be taken into account including:

Initial material costs

Labour cost to load excess material into the building

Labour cost to remove waste from the building

The total cost of waste is a lot higher than the cost of

removal. As a result, British Gypsum works closely with

customers to eliminate and reduce waste before it entersthe site. Some of the many ways British Gypsum can help

include:

Eliminate: Best practice design assistance at specification

stage, installer training and value engineering.

Reduce: Designing out waste in specifications (see Detail 13 -

Alternative door frame to satisfy BS 5324: Parts 1 & 2: 1992

- Heavy and Severe Dutyon page 49), the use of bespoke

product sizes and on-site technical support.

Re-use: Reduced board types on-site making off-cuts easier

to use.

Recycle: Recycling and reclamation through the

Plasterboard Recycling Service.

Sustainability

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Environmental Management - ISO 14001: 2004

As part of our drive to continuously improve our

performance, we have invested significant resource in

developing environmental management systems;

ISO 14001: 2004 certified to International Organisation for

Standardisation.

In preparation for Integrated Pollution Prevention and

Control regulations in 2006, we developed our

environmental management systems to bring them in line

with the internationally accepted ISO 14001 standard.

In November 2008 British Gypsum became the first plaster

and plasterboard manufacturer to achieve ISO 14001: 2004

certification across all of its manufacturing and mining

sites in the UK.

This certification emphasises the stringent environmental

standards maintained across the business and will enableBritish Gypsum to support customers by clearly

demonstrating its use of sustainable construction products

as advocated by BREEAM, the Code for Sustainable Homes

and the BRE Green Guide.

Part of British Gypsums sustainability strategy is to

optimise the use of recycled and reclaimed raw materials in

the manufacture of products, designing them to minimise

unnecessary waste, and to provide facilities to reclaim and

recycle post-consumer waste.

Recycled content of plasterboard

British Gypsums gypsum-based plasterboards and ceiling

products have a very high recycled content, as detailed

below:

The products are manufactured using gypsum sourced

largely as synthetic DSG (desulphogypsum), a by-product

of the flue gas desulphurisation process at coal-fired

power stations.

Plasterboard is a highly sustainable

product; new plasterboard may

have a recycled content of almost

90% and nearly all plasterboard is90% recyclable after use. As a

result, plasterboard often has the

highest recycled content of any

construction products in new

buildings.

Although the maximum for recycled

plasterboard content into

remanufacture is currently at 18% it

is possible this figure will improve in

the future as new recycling technology

and techniques become available.

The paper liners on ourplasterboards are made from

97% recycled paper and cardboard.

Plasterboard Recycling Service

British Gypsum leads the UK drywall industry in recycling

plasterboard waste, reducing the pressure on landfill and

preserving gypsum reserves. We are the only gypsum

company with dedicated plasterboard recycling facilities in

the UK. The British Gypsum Plasterboard Recycling Serviceis responsible for recycling over 75% of all the plasterboard

waste recycled into new plasterboard in the UK.

We have invested heavily to expand the availability of our

service, which not only significantly reduces waste handling

costs and saves precious raw materials, but also improves

site safety for the contractor through better site

housekeeping.

We have also been instrumental in the development of the

Ashdown Agreement working with the GPDA1 and WRAP2,

delivering a voluntary commitment by UK plasterboardmanufacturers to significantly reduce, and ultimately

eliminate, plasterboard manufacturing waste to landfill.

For more information, please contact the Plasterboard

Recycling Service Customer Service Centre -

T: 0800 6335040.

1 Gypsum Products Development Association.2 Waste Resources Action Programme.


Background

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The Building Research Establishment Environmental

Assessment Method (BREEAM) for Healthcare

This method was created to ensure that construction

projects meet high standards of environmental performance

without prescribing specific designs. BREEAM: healthcare

2008 superseded NEAT as of 1st July 2008 as the recognisedenvironmental assessment tool for healthcare buildings.

All compliance requirements are inspected by BRE licenced

assessors.

BREEAM building assessments are high on the agenda of

the regulatory organisations that have a stakehold interest

in the healthcare sector.

Since 1st July 2008, the Department of Health has required,

as part of the Outline of Business Case approval, that as a

minimum, all new builds achieve Excellent and all

refurbishments achieve Very Good rating under BREEAM:healthcare.

BREEAM: healthcare can be used to assess all healthcare

buildings containing medical facilities, and at different

stages of their lifecycle:

New-build

Major refurbishments

Extensions

Existing buildings in operation

The draft Strategy for Sustainable Construction Consultation

Paper (July 2007) states the long-term objective that 100%

of new-build projects on government estate achieve a BREEAM

rating of EXCELLENT. See Table 1.3 for more information.

Points can be obtained for many of the BREEAM criteria

through the incorporation of British Gypsum systems.

Table 1.4 refers to the same key areas.


Credit reference Solutions and support Maximum potentialcredits

Man 11 Durable solutions such as GypWall EXTREME 1Ease of maintenance and Thistle Durafinish will improve planned

maintenance cycles

Hea 2 ACTIVairproducts could contribute towards points as part 2Indoor air quality of an indoor an indoor air quality and testing plan

Hea 13 High acoustic performance floor, ceiling and partition systems 2Acoustic performance meeting or exceeding UKAS accredited test data for all systems.the requirements of HTM 08-01 Specification assistance

Ene 1 Air tightness detailing assistance. 15Reduction of CO2 emissions External envelope performance improvement

Mat 1 Green Guide ratings are available on 6Materials specification (major building elements) www.thegreenguide.org.uk

Mat 5 Gyproc plasterboards, Glasroc specialist boards,Thistle plasters 3Responsible sourcing of materials and core products have been certified to BES 6001 Responsible

Sourcing of Construction Products achieving a Very Good British Gypsum is fully ISO 14001:2004 certified across all

mining, manufacturing and central functions

Mat 6 Green Guide ratings for insulation 2Insulation 80% recycled content

Mat 7 Single layer Severe Duty solutions 1

Designing for robustness (GypWall ROBUST and GypWall EXTREME)

Wst 1 Plasterboard Recycling Service 3Construction waste management Reduced waste details

Single board specificationsSource: BREEAM: healthcare 2008 Assessor Manual

BREEAM Score required

rating (Design stage & Post Construction Review)

UNCLASSIFIED


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Robustness of design

Most areas within healthcare buildings, due to their very

nature, are subject to intensive use that can result in

significant damage to the surroundings, whilst regular,

unplanned maintenance can be disruptive to critical areas.

Therefore, when designing internal spaces, the use ofdurable materials has a significant impact on whole life

costs and leads to more predictable maintenance cycles.

The Building Regulations do not specifically detail

requirements for strength and robustness of partitions,

however, according to HTM 56: Partitions, walls should be

capable of meeting the requirements of BS 5234 to the

appropriate duty category.

Performance requirements for partitions

BS 5234 - Partition Grading

BS 5234 comprises two parts Part 1 - Design and

installation requirements, and Part 2 - Specification for

performance requirements for strength and robustness in

relation to end use categories. The standard covers

performance aspects such as stiffness, crowd pressure,

impacts, anchorages and door slamming resistance.

Please note: In order to claim a partition duty, a designated

performance level must be achieved for all elements in the

test see Table 1.5 below for examples of room type in each

category.

All British Gypsum partitioning systems are fully tested to

BS 5234: Part 2: 1992.

GypWall CLASSIC systems, incorporating Gyproc SoundBloc or

Gyproc FireLine, achieve Heavy Duty to BS 5234 using a

single layer 15mm lining. This provides an extremely cost

effective solution for the majority of situations.

Severe Duty can be achieved in a single layer using

GypWall ROBUST, incorporating Gyproc DuraLine. This system

is tried and tested in healthcare facilities throughout the UK.

With whole-life costs increasingly being considered,

GypWall ROBUST offers additional durability over single layer

GypWall CLASSIC systems without the need for additional

board layers.

In 2007, British Gypsum launched GypWall EXTREME, the

ultimate impact resistant partition for use where additionaldurability is required above and beyond Severe Duty. It is

able to cope with the rigours of intensive, high traffic

spaces within healthcare buildings where blockwork has

traditionally been specified.

It is also suited for mental healthcare environments due to

its ability to resist deliberate attack.

Please refer to Section 2 Selecting partitions for specific

solutions to meet duty requirements.

Partition Duty Category Examples

Light Adjacent space only accessible to persons with high incentiveto excercise care. Small chance of accident occurring or of misuse

Medium Adjacent space moderately used, primarily by persons with some incentive Officesto excercise care. Some chance of accident occurring or of misuse

Heavy Adjacent space frequently used by the public and others with little incentive Ancillary circulation areasto excercise care. Chances of accident occurring or of misuse

Severe Adjacent space intensively used by the public and others with little incentive Major circulation areasto excercise care. Prone to vandalism and abnormal rough use

Table 1.5 BS 5234: Part 2: 1992

Source: BS 5234: Part 2

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Severe

Severe plus

Heavy

Key facts

High impact resistance

Fully satisfies BS 5234: Parts 1 and 2 for both strength and robustness

requirements to Severe Duty in a single layer

Single layer solutions can achieve 60 minutes fire resistance to EN standards

Double layer solutions can achieve up to 120 minutes fire resistance to EN

standards

Stud options for additional height

Achieves high levels of sound insulation

Key facts

Range of stud options to match performance requirements

Acoustic stud option for enhanced acoustic performance

Fully satisfies BS 5234: Parts 1 and 2 for both strength and robustness

requirements up to Heavy Duty

30 - 60 minutes fire resistance to BS and EN standards1

Accommodates services within stud cavity

Stud options for additional height

Key facts

Tested far beyond the performance requirements of BS 5234: Part 2: 1992 Severe

Duty (please see Section 3 - Mental health partitioning for more information)

Capable of securing heavy fixings on a single layer without the need for

additional patressing2

Achieves Severe Duty to BS 5234 with a single 12.5mm board lining

Excellent resistance to deliberate attack

Reduces maintenance lifecycle costs

Excellent acoustic performance

Extremely cost effective system combining Gyproc plasterboards and Rigidur H

Hybrid system ideal for corridor applications

GypWall CLASSIC single boarded solutions

GypWall ROBUST single boarded solutions, and GypWall CLASSIC double boarded solutions

GypWall EXTREME and GypWall EXTREME/ROBUST hybrid solutions

GypWall systems for specific Duty requirements

1 Please consider Severe and Severe Plus solutions where additional fire, acoustic or duty

performance is required.

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2 Dependent on fixing and geometry of the object.


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Protection to partitions and linings

Healthcare buildings are intensly used facilities where

patient health and wellbeing are the key priorities. During

daily use, many areas are subjected to glancing blows and

direct impacts from patients, staff and mobile equipment.

HTM 56 states that protection against mechanical damageshould be considered in all areas where the partitions may

be subjected to hard body impact from mobile equipment.

Additional protection above and beyond that provided by

the partition should be designed in, see Table 1.6.

In addition to the guidance set out in HTM 56, HTM 69

Protection contains guidance for the use of design teams

on the avoidance of damage in healthcare buildings.

HTM 69 uses the categories set out in BS 5234: Partitions,

described earlier in this section, and recommends

additional protection for each Duty Rating to protect the

systems used, see Table 1.7.

Please refer to HTM 69 for specific guidance on material

type and typical dimensions of additional protection.

Purpose Type Height Locations

above FFL

Surface Buffer 800mm to Main corridors,

protection rails 1000mm trolley bays,

ward kitchens,

main kitchens,

bedheads

Arris Corner FFL to Areas where

protection guards at least trolleys or heavy

1000mm mobile equipment

are likely to be used

FFL to Areas where high

at least mobile equipment

2000mm e.g. linen trolleys

are likely to be used

Source: HTM 56

Table 1.6 - Additional protection

Table 1.7 - Types of protection according to category of damage risk (HTM 69: Protection)

Light only Medium Duty Heavy Duty Severe and heavy Dutymain corridors

Corner protection

handrail/crash rails

splayed skirting

durable

material

handrail/crash rail

deep skirting

ORdurablematerial

handrail/crash rail

OROR decorativefinish

chair rail

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Fixing to GypWall linings

Introduction

There are a wide variety of fixing devices suitable for

securing fixtures and fittings to British Gypsum systems.

Generally, the choice of individual fixing devices will depend

on the type of system, the loading requirements, and the

general level of use. This section gives recommendations on

the selection of generic devices and proprietary fixings.

When using drylined walls, there is normally a cavity to be

bridged between the boards and the background. The fixing

device should be long enough to allow for this and to

penetrate adequately into the solid wall or background.When timber or metal framed partitions are used, lightweight

fixtures can be made directly to the partition linings.

Medium weight fixtures should be made into the studs, or

to Gypframe 99 FC 50 Fixing Channels. Heavyweight

fixtures (as defined by BS 5234) such as wash basins, wall

cupboards and shelving should be fixed to Gypframe

150 FC 90 Fixing Channels. Gypframe 150 FC 90 Fixing

Channels have been designed to suit Gypframe C Studs,

I Studs, AcouStuds and GypLyner GL1 Lining Channels at

600mm, 400mm or 300mm centres. Tests have shown that

Gypframe 150 FC 90 Fixing Channel can exceed the

requirements of BS 5234: Part 2: 1992 Annex K&L.

A Gypframe Service Support Plate should be used to

provide support to 18mm plywood patresses fitted

between stud centres.

GypWall EXTREME, using Rigidur H, offers additional fixing

strength to reduce the need for patressing. Please see the

Product Data Sheet: Glasroc Rigidur H for commercial

applications for more information, available to download

from www.british-gypsum.com

www.british-gypsum.com/health Drywall Academy Tel: 0844 800 1991

High performance finishes

Thistle Durafinish is a gypsum finish plaster specially

formulated for increased resistance to accidental damage,

enabling significantly improved maintenance cycles and

lower long-term cost in heavy traffic areas of many types

of healthcare buildings.

For more information, please refer to pages 76 and 77,

or the WHITE BOOK Finishing systems and decorative

effects, or the Thistle Durafinish Product Data Sheet,

available to download from www.british-gypsum.com

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email: [email protected] www.british-gypsum.com/health

Electrical socket box (for installation no higher than standardlight switch level)

Electrical trunking fixture1

3

Construction details

Crash rail fixture2

Wall cupboard fixture4

Folding support rail fixture5 Gypframe Service Support Plate6

2

3

1

Gyproc plasterboard or Glasroc F specialist board

Gypframe C Stud

Electrical trunking

Crash railGypframe channel tabbed, bent and fixed to studs with Gyproc Wafer

Head Drywall Screws

Metal back socket box

Gypframe 150 FC 90 Fixing Channel fixed to studs with Gyproc Wafer

Head Drywall Screws

Wall cupboard

150 x 50mm timber suitably fixed to studs and channelFolding support rail

Gypframe Service Support Plate

18mm plywood

1

23

45

6

7

8

910

11

12

2

7

8

1

2

9

1

10 1

2

11

12

2

4

1

2

5

6

1

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Table 1.8 Example fixing devices and typical safe working loads

System Lightweight fixtures up Lightweight to medium fixtures Medium weight fixtures Medium to heav y fixtures Heavy fixtures

to 3kg (e.g. socket) 4-8kg (e.g. small mirror) 9-20kg (e.g. shelf) 21-50kg (e.g. cupboard) 51-100kg (e.g. basin)

ShaftWall A B or C D, E or I G, H or I K or H

GypWallsystems1

GypLyner IWL

Timber stud A B or C K or D K K

DriLyner A B F L L

GypLyner A B or C D or E J, K or L K or L

UNIVERSAL wall

Reference Typical SWL2 Description Detail

(typical failure load)

A 3kg (12kg) No. 10 woodscrew into Gyproc plasterboard

B 4kg (16kg) Steel picture hook and masonry nail

into Gyproc plasterboard

C 6kg (24kg) Metal self-drive screws into single layer Gyproc plasterboard

8kg (32kg) Metal self-drive screws into double layer G yproc plasterboard

D 12kg (48kg) Steel expanding cavity fixing, e.g. M5 x 40, into Gyproc plasterboard

(board thicknesses up to 12.5mm)

18kg (72kg) Steel expanding cavity fixing, e.g . M5 x 65, into Gyproc plasterboard

(board thicknesses from 15mm to 28mm)

E 19kg (76kg) Gyproc Drywall Screw fixed through Gyproc plasterboard into

0.5mm Gypframe metal stud / Gypframe 99 FC 50 Fixing Channel

F 20kg (140kg) Heavy Duty plastic plug fixed through Gyproc plasterboard

into masonry with 55mm minimum penetration

G 30kg (120kg) Gyproc Jack-Point Screws fixed through Gyproc plasterboard into

minimum 0.9mm Gypframe metal stud / Gypframe 150 FC 90 Fixing Channel

H 50kg (200kg) No. 12 self-tapping screws fixed through Gyproc plasterboard into

minimum 0.9mm Gypframe metal stud / Gypframe 150 FC 90 Fixing Channel

I 40kg (160kg) Steel expanding metal cavity fixing , e.g. M4 x 40, through Gyproc plasterboard into 0.9mm

Gypframe metal stud / Gypframe 150 FC 90 Fixing Channel (board thicknesses up to 12.5mm)

50kg (200kg) Steel expanding metal cavity fixing, e.g. M4 x 65, through Gyproc plasterboard into 0.9mmGypframe metal stud / Gypframe 150 FC 90 Fixing Channel (board thicknesses from 15 to 28mm)

50kg (200kg) Steel expanding metal cavity fixing, e.g. M5 x 65, fixing through Gyproc plasterboard

into plywood supported by Gypframe Service Support Plate

J 60kg (240kg) 8mm steel frame fixing fixed through Gyproc plasterboard into masonry

with minimum 55mm penetration

K 120kg (480kg) No. 12 self-tapping screw fixed through Gyproc plasterboard into

timber sub-frame

L 130kg (520kg) M8 steel bolt / anchor fixed through Gyproc plasterboard into

masonry with minimum 55mm penetration

Fixings

The example fixing devices, typical safe working loads and typical failure loads given in Table 1.8 relate to the installation

of single fixtures. It is important to ensure that the drylining system specified is capable of supporting the loads,

particularly if installing multiple fixtures. For further advice please contact the British Gypsum Drywall Academy.

andtheory

1 For GypWall QUIETSF, ensure that the fixings do not bridge the Gypframe RB1 Resilient Bars, otherwise the acoustic performance may be compromised.2 Safe Working Load (SWL) - a safety factor of 4 (steel fixings) and 7 (plastic fixings) has been used.

For technical assistance on above fixings please contact the fixings manufacturer. The suitability of the fixing must be confirmed by the building designer / fixing manufacturer.Reference can also be made to the Construction Fixing Association (CFA) guidance note Fixing For Plasterboard, which is currently under review by the CFA and can be accessed at www.fixingscfa.co.uk

When specifying a fixing to / through Gyproc ThermaLine laminates, please give consideration to the thickness and compressibility of the insulation to ensure that the fixing used is fit for purpose.

The information within Table 1.8 does not take into consideration any additional forces that may be applied whether it be accidental, abuse or otherwise.

The example fixing devices, typical safe working loads and typical failure loads given in Table 1.8 relate to the installation of single fixtures. It is important to ensure that the drylining

system specified is capable of supporting the loads, particularly if installing multiple fixtures.

NB


19/152


Table 1.9 Example fixing devices and typical safe working loads for GypWall EXTREME

Reference Typical SWL1 Description Detail

(typical failure load)

B 17kg (68kg) Steel picture hook and masonry nail into 12.5mm Rigidur H

18kg (72kg) Steel picture hook and masonry nail into 15mm Rigidur H

M 7kg (49kg) Fischer PD nylon plug and screw into 12.5mm Gyproc WallBoard

10kg (70kg) Fischer PD nylon plug and screw into 1 5mm Gyproc SoundBloc

11kg (77kg) Fischer PD nylon plug into 15mm Gyproc DuraLine

20kg (140kg) Fischer PD nylon plug and screw into 12.5mm or 15mm Rigidur H

N 21kg (147kg) Fischer UX (8 x 50) nylon plug and screw into 12.5mm Rigidur H

27kg (189kg) Fischer UX (8 x 50) nylon plug and screw into 15mm Rigidur H

A 15kg (60kg) No. 10 woodscrew into 12.5mm or 15mm Rigidur H

O 17kg (68kg) Fischer HM8 x 55 steel cavity fixing into 15mm Gyproc SoundBloc

20kg (80kg) Fischer HM8 x 55 steel cavity fixing into 15mm G yproc DuraLine

49kg (196kg) Fischer HM8 x 55 steel cavity fixing into 15mm RigidurH

P 58kg (232kg) Fischer KD6 steel cavity fixing into 12.5mm Rigidur H

74kg (296kg) Fischer KD6 steel cavity fix ing into 1 5mm RigidurH

Additional example fixing devices and typical safe working loads when fixing into Rigidur H (GypWall EXTREME) and including

12.5mm Gyproc WallBoard, 15mm Gyproc SoundBloc and 15mm Gyproc DuraLine for comparison where appropriate, are

shown in the table below:

Background

andtheory

1 Safe Working Load (SWL) - a safety factor of four (steel fixings) and seven (plastic fixings) has been used.

For technical assistance on above fixings please contact the fixings manufacturer. The suitability of the fixing must be confirmed by the building designer / fixing manufacturer.

Reference can also be made to the Construction Fixing Association (CFA) guidance note Fixing For Plasterboard, which is currently under review by the CFA and can be accessed at

www.fixingscfa.co.uk

The information within Table 1.9 does not take into consideration any additional forces that may be applied whether it be accidental, abuse or otherwise.

The example fixing devices, typical safe working loads and typical failure loads given in Table 1.9 relate to the installation of single fixtures. It is important to ensure that the dryliningsystem specified is capable of supporting the loads, particularly if installing multiple fixtures.

NB


20/152


Performance of finishes for partitions

Health Technical Memorandum 56 - Partitions (HTM 56),

section 3, provides six performance categories that relate touser requirements for wall finishes in healthcare buildings,

please see Table 1.10.

10

Impervious able to resist the penetration of water,

solutions containing detergents, disinfectants and

other liquids likely to be encountered in healthcare

buildings.

Jointless without joints, or having joints which are

sealed by methods and materials which make the

whole surface impervious and prevent the collection

of dirt and bacteria in the joint. Smooth no coarser than brush-applied matt

emulsion paint on a flat plastered surface without

projections, indents or holes part-way through the

material.

Moisture resistance:

High humidity 25% to 100% relative humidity

over an air temperature range of 10C to 30C,

and able to withstand sustained contact with

water and water vapour.

Normal humidity 25% to 65% relative humidity

over an air temperature range of 10C to 25C,

and able to withstand intermittent contact with

water and water vapour.

Table 1.11 states the wall finishes required in each of the

categories. The finishes listed are the minimum acceptable

for each of the categories, and options are provided so that

the specifier can consider requirements relating to

durability; resistance to fungal and bacterial attack, and

resistance to cracking and abrasion.

In addition to continued supply, finishes should be selected

on balance considering capital cost as well as maintenance

costs.

British Gypsum products and systems contribute

significantly to the durability of the partition.

Thistle Durafinish is a hardwearing plaster that has been

developed specifically for hardworking buildings, to help

maintain the appearance of finished partitions, and reduce

damage caused by daily use. GypWall ROBUST provides single

layer Severe Duty performance for improved impactresistance. GypWall EXTREME has been developed for

intensely used, high traffic areas and provides an extremely

dense surface that resists gouging, glancing blows and

direct impacts to reduce the risk of unplanned maintenance

and reduce the risk of the partition becoming a harbour for

microbe growth.

Table 1.11 describes the applied finishes required to meet

the criteria in Table 1.10.

Source: HTM 56

Table 1.10 - Performance characteristics

Physical and performance Categories of

characteristics performance of finishes

1 2 3 4 5 6

Impervious

Jointless

Smooth

Moisture resistanceHigh humidity

Normal humidity

Source: HTM 56

Table 1.11 - Wall finishes

Wall finish Categories of

performance of

finishes

1 2 3 4 5 6

Liquid coverings

Epoxy coating

Paint:

Emulsion matt, silk

Oil

Gloss

Semi-gloss, eggshell

Vinyl - gloss

Polyurethane coating

Spray elastomeric vinyl compound

Spray paint (multi-colour) gloss

Flexible pre-formed coverings

Cloth-backed vinyl covering

Paper-backed vinyl

PVC sheet (1mm thick with

welded joints)

Wallpaper

Wallpaper with spongeable surface

Hard pre-formed coveringsCeramic tiles

Cement grouting

Epoxy grouting

Plastic laminate with sealed joints

andtheory

Finishes


21/152


Appendix A of HTM 56 details the requirement by room

type for the specifier.

Acoustic ceilings finishes

HTM 60: Ceilings, provides performance categories relating

to characteristics of a ceiling membrane. Please see Table1.12.

There are six physical characteristics of the soffit, described

below:

Smooth no coarser than a brush-applied matt emulsion

paint on a flat plastered surface without projections,

indents or holes.

Textured a surface other than smooth.

Imperforate without holes through the membrane.

Perforated having a pattern of pre-formed holes into or

through the membrane.

Jointless either having no joints, or having joints whichare completely sealed so that the whole of the finish is

impervious and will prevent the collection of dirt and

bacteria. It is important to note that a jointless ceiling

membrane may be one which uses a lay in grid ceiling

system where each tile is sealed (i.e. mastic) on the rear

of the tile to the grid.

Jointed other than jointless.

There are two performance characteristics relating to

humidity and spread of flame, described below:

Humidity:

Normal humidity: able to withstand 25% - 65% relativehumidity over an air temperature range of 10C to 25C

High humidity: able to withstand 25% - 100% relative

humidity over an air temperature range to 10C to 30C

Surface spread of flame:

The Building Regulations (2000) set out the following

requirements for buildings in Purpose Group 2:

Ceilings of circulation spaces and shafts are required to

be Class 0

Ceilings of all other rooms are required to be not less

than Class 1

Please refer to Section 6 Selecting acoustic ceilings for

solutions by category.

Cleaning regime

The publication National standards of cleanliness for the

NHS, dated April 2001, states cleaning frequencies for

different functional areas.

All British Gypsum acoustic ceilings can be cleaned with adamp cloth and mild detergent. In addition, all Casoprano,

Gyptone and Rigitone ceiling tiles, planks and board

systems can be repainted with any suitable emulsion colour

paint using a short-haired roller, extending the life of the

product almost indefinitely.

Essential requirement Options

Source: HTM 60: Ceilings

Table 1.12 - Physical and performance characteristics

Physical and performance Categories of ceiling

characteristics performance

1 2 3 4 5 6

Soffit:Smooth

Textured

Imperforate

Perforated

Jointless

Jointed

Humidity:

Normal

High

Spread of flame:Class 1

Class 0

Background

andtheory


22/152

Indoor air quality

www.british-gypsum.com/education Drywall Academy Tel: 0844 800 199120

andtheory


23/152

email: [email protected] www.british-gypsum.com/education 21

Background

andtheory


24/152


andtheory


25/152


Selecti

ng

partitions

Selecting

partitions

2


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Selecting partitions

Introduction 26

Performance matrix 28

Worked examples 30

Selecting your partition type 31

Solutions up to Rw 42 dB 32





Solutions Rw 60 dB 44

Hybrid solutions 46

ShaftWall solutions 48

Timber stud solutions 49


This section will guide you through the calculation

process to arrive at the acoustic requirement for

partitions according to HTM 08-01. Then a number

of worked examples will be provided. Finally,

British Gypsum solutions designed to meet the

various acoustic requirements are presented.


partitions 2


27/152


28/152

( )


IntroductionPartitions in healthcare

Treatments and recovery can be disrupted by unwanted

noise through the walls from adjacent spaces. Health

Technical Memorandum 08 01 (HTM 08-01) provides

performance standards in terms of the weighted level

difference DnT,w for the attenuation of airborne sound

transmission between adjoining rooms. These values are

defined by the privacy requirement and noise generation of

the source room and the noise tolerance of the receiving room.

The level differences must be determined in both directions

as one direction may have more stringent performance

criteria. These values can simply be found by using

Figure 2.1 and tracing across to where the two room types

coincide.

The minimum weighted sound level difference between

rooms is quoted in terms of DnT,w. However partition

performances are based on laboratory airborne sound

insulation data measured in terms of sound reduction

index Rw. The following procedure applies a correction

factor to take account of this difference, and can be used to

select an appropriate partition specification.

Determine the minimum weighted standardised

sound level difference between rooms in each direction

from Figure 2.1 on pages 26 and 27.

Calculate the minimum required sound reduction

index Rw using the following formula:

Rw = DnT,w + 10 log S + 12 dB

Where: S = surface area of the separating element

V = volume of the receiving room

HTM 08-01 states for light weight partitions that the

Rw value should be a minimum of 5 dB higher than DnT,weven for very well controlled flanking. To account for less

favourable mounting conditions and flanking noise

transmission, HTM 08-01 recommends the difference

between Rw and DnT,w is at least 7 dB. Higher values may be

required depending on the quality of the flanking details

an acoustic consultant should be appointed to advise in

this respect.

Therefore, the weighted sound reduction index Rw that

HTM 08-01 recommends is used to select the partition from

laboratory test data where there are unfavourable flanking

conditions is:

Rw = DnT,w + 10 log S + 14 dB



If the receiving room does not have the minimum

absorption area that is equivalent to a Class C absorber

(as defined in BS EN ISO 11654: 1997) covering 80% of the

ceiling area, then a 3 dB correction should be added to the

required weighted sound reduction index of the partition.

If the receiving room satisfies the absorption criteria no

correction factor is applied to the Rw value. For areas usingClass A or B absorbers, less surface area will be required.

Guidance is given in Section 6 Ceilings on how to

determine the lower absorption area.

Therefore the weighted sound reduction index Rw that

HTM 08-01 recommend is used to select the partition from

laboratory test data is:

Rw = DnT,w + 3 + 10 log S + 12 dB



3 = absorption correction factor

It is not possible to calculate the acoustic requirements by

room type without precise room dimensions. In order to

demonstrate the full calculation, an example based on

typical room combinations is shown on pages 28 - 29.

Using the matrix

The level of sound insulation between spaces is directly

related to the functions of the two adjoining spaces, the

privacy requirement of the source room and their tolerance

to noise being transmitted through the common wall.HTM 08-01 has classified the levels of privacy, activity and

the noise tolerance for each room type found within a

healthcare building. To determine the minimum airborne

sound insulation performance of the common wall, the

ratings are used to find the weighted standardised level

difference DnT,w from a separate table. The activity room

and receiving room levels are then reversed to establish the

more onerous configuration. Figure 2.1 allows weighted

standardised level difference to instantly be found by tracing

across the activity noise and receiving noise room types.

To simplify the process of determining the required Rw valueBritish Gypsum has developed an easy-to-use performance

calculator, which is located in the back cover of this

publication. Simply place the disk in your computer and

follow the guidance instructions to determine the required

Rw for all of the partitions on your healthcare project.

British Gypsum recommends that

a qualified acoustic consultant be

appointed to check all acoustic

specifications, details and

calculations.

1

V

STEP

2STEP

partitions

( )V

( )V

The WHITE BOOKHealth sector guide

Healthcare acoustic calculators


29/152


Selecting

partitions


30/152


Figure 2.1PerformanceMatrix

47 47 47 47 47 47 47 47 47 47 47 47

37 37 37 37 37 37 37 37 37 42 42 37

47 47 47 47 47 47 47 47 47 52 47 47

42 42 42 42 42 42 42 42 42 47 42 42

47 47 47 47 47 47 47 47 47 47 47 47

47 47 47 47 47 47 47 47 47 47 47 47

47 47 47 47 47 47 47 47 47 47 47 47

47 47 47 47 47 47 47 47 47 52 47 47

47 47 47 47 47 47 47 47 47 47 47 47

42 42 42 42 42 42 42 42 42 47 42 42

52 52 52 52 52 52 52 52 52 52 52

52 52 52 52 52 52 52 52 52 52 52

37 37 37 37 37 37 37 37 37 42 37 37

42 42 42 42 42 42 42 42 42 47 42 42

NR NR NR NR NR NR NR NR NR 37 NR NR

47 47 47 47 47 47 47 47 47 52 47 47

47 47 47 47 47 47 47 47 47 52 47 47

47 47 47 47 47 47 47 47 47 52 47 47


42 42 42 42 42 42 42 42 42 47 42 42

42 42 42 42 42 42 42 42 42 47 42 42

37 37 37 37 37 37 37 37 37 42 37 37

42 42 42 42 42 42 42 42 42 47 42 42

NR NR NR NR NR NR NR NR NR NR NR NR

37 37 37 37 37 37 37 37 37 42 37 37

52 52 52 52 52 52 52 52 52 52 52



42 42 42 42 42 42 42 42 42 47 42 42

37 37 37 37 37 37 37 37 37 42 37 37

47 47 47 47 47 47 47 47 47 52 47 47

42 42 42 42 42 42 42 42 42 47 42 42

47 47 47 47 47 47 47 47 47 52 47 47


42 42 42 42 42 42 42 42 42 47 42 42

37 37 37 37 37 37 37 37 37 42 37 37


47 47 47 47 47 47 47 47 47 52 47 47

47 47 47 47 47 47 47 47 47 52 47 47

42 42 42 42 42 42 42 42 42 47 42 42

Minimum DnT,w (dB)

Clinical areas

Public areas

Staff areas

Single bed / on-call room

Multi-bed room

Children and older people (single bed)

Children and older people (multi-bed)

Consulting room

Examination room

Treatment room

Counselling / bereavement room

Interview room

Operating theatre suite

Nurseries

Birthing room

Laboratories

Dirty utility / sluice

Clean utility

Speech and language therapy

Snoezelen / multi-sensory room

Multi-faith / chapel

Corridor (no door)

Atrium

Dining

Toilets (not cubicles)

Waiting (large - > 20 people)

Multi-person office (2 - 4 people)

Open plan office ( 5 people)

Boardroom

Large meeting room (>35m2)

Small meeting room ( 35m2)

Waiting (small - 20 people)

Toilets (not cubicles)

Main kitchen

Ward kitchen, pantry

Storeroom

Rest room

Locker / changing room

Large training / seminar (> 35m2)

Small training / seminar ( 35m2)

Lecture theatre

Library / archiving room

Single person office

NOISETOLERANCEINSOURCEROOM

Singlebed/on-callroom

Multi-bedroom

Childrenandolder

people(singlebed)

Childrenandolder

people(multi-bed)

Consultingroom

Examinationroom

Treatmentroom

Counselling/bereavementroom

Interviewroom

Operatingtheatre

suite

Nurseries

Birthingroom

Clinical areas

partitions

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

1 2 3 4 5 6 7 8 9 10 11 12

Key = Avoid room combination

NR = No rating

* = Room number corresponding with acoustic calculator

*

*


31/152


47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47

37 37 37 37 37 42 37 37 37 37 37 37 37 37 37 37 37 37 37 37 42 42 37 37 37 37 37 37

47 42 42 52 52 52 42 42 42 42 42 42 42 42 42 42 47 42 47 47 52 52 47 47 47 47 47 47

42 37 37 47 47 47 37 37 37 37 37 37 37 37 37 37 42 37 42 42 47 47 42 42 42 42 42 42

47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47

47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47

47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47

47 47 47 52 52 52 47 47 47 47 47 47 47 47 47 47 47 47 47 47 52 52 47 47 47 47 47 47

47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47

42 42 42 47 47 47 42 42 42 42 42 42 42 42 42 42 42 42 42 42 47 47 42 42 42 42 42 42

52 47 47 47 47 47 47 47 47 47 47 47 47 52 47 52 52 52 52 52 52 52 52

52 47 47 47 47 47 47 47 47 47 47 47 47 52 47 52 52 52 52 52 52 52 52

37 37 37 42 42 42 37 37 37 37 37 37 37 37 37 37 37 37 37 37 42 42 37 37 37 37 37 37

42 NR NR 47 47 47 NR NR NR NR NR NR NR NR NR NR 42 NR 42 42 47 47 42 42 42 42 42 42

NR NR NR 37 37 37 NR NR NR NR NR NR NR NR NR NR NR NR NR NR 37 37 NR NR NR NR NR NR

47 47 47 52 52 52 47 47 47 47 47 47 47 47 47 47 47 47 47 47 52 52 47 47 47 47 47 47

47 47 47 52 52 52 47 47 47 47 47 47 47 47 47 47 47 47 47 47 52 52 47 47 47 47 47 47

47 42 42 52 52 52 42 42 42 42 42 42 42 42 42 42 47 42 47 47 52 52 47 47 47 47 47 47




37 37 37 42 42 42 37 37 37 37 37 37 37 37 37 37 37 37 37 37 42 42 37 37 37 37 37 37



37 37 37 42 42 42 37 37 37 37 37 37 37 37 37 37 37 37 37 37 42 42 37 37 37 37 37 37

52 47 47 47 47 47 47 47 47 47 47 47 47 52 47 52 52 52 52 52 52 52 52



42 37 37 47 47 47 37 37 37 37 37 37 37 37 37 37 42 37 42 42 47 47 42 42 42 42 42 42

37 37 37 42 42 42 37 37 37 37 37 37 37 37 37 37 37 37 37 37 42 42 37 37 37 37 37 37

47 42 42 52 52 52 42 42 42 42 42 42 42 42 42 42 47 42 47 47 52 52 47 47 47 47 47 47

42 42 42 47 47 47 42 42 42 42 42 42 42 42 42 42 42 42 42 42 47 47 42 42 42 42 42 42

47 42 42 52 52 52 42 42 42 42 42 42 42 42 42 42 47 42 47 47 52 52 47 47 47 47 47 47


42 42 42 47 47 47 42 42 42 42 42 42 42 42 42 42 42 42 42 42 47 47 42 42 42 42 42 42

37 37 37 42 42 42 37 37 37 37 37 37 37 37 37 37 37 37 37 37 42 42 37 37 37 37 37 37


47 47 47 52 52 52 47 47 47 47 47 47 47 47 47 47 47 47 47 47 52 52 47 47 47 47 47 47

47 42 42 52 52 52 42 42 42 42 42 42 42 42 42 42 47 42 47 47 52 52 47 47 47 47 47 47

42 42 42 47 47 47 42 42 42 42 42 42 42 42 42 42 42 42 42 42 47 47 42 42 42 42 42 42

Laboratories

Dirtyutility/sluice

Cleanutility

Speechandlangua

getherapy

Snoezelen/multi-

sensoryroom

Multi-faith/chape

l

Corridor(nodoor)

Atrium

Dining

Toilets(notcubicle

s)

Waiting(large->2

0people)

Waiting(small-20people)

Toilets(notcubicle

s)

Mainkitchen

Wardkitchen,pantry

Storeroom

Restroom

Locker/changingroom

Largetraining/seminar(>35m2)

Smalltraining/seminar(35m2)

Lecturetheatre

Library/archiving

room

Singlepersonoffic

e

Multi-personoffice(2-4people)

Openplanoffice(

5people)

Boardroom

Largemeetingroom(>35m2)

Smallmeetingroom(35m2)

NOISE SENSITIVITY OF RECEIVING ROOM

Public areas Staff areas

Selecting

partitions

13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40


32/152


Determining the Weighted Sound Reduction index for partitions worked examples

The flow diagram below illustrates the process required to determine the weighted sound reduction index (Rw), as quoted

in this document. From the diagram, it is notable that four possible acoustic levels can result from one D nT,w figure in any

one room-to-room combination. This is due to the variables in the equation, which can be determined by the acoustic

consultant involved with the project.

Changing Room to Changing Room

DnTw required = 37 dB

Both rooms have a Class C ceiling covering

at least 80% of the floor area

Common wall area, S = 2.7 x 5 = 13.5m 2

Volume of the receiving room, V = 135m3

Rw = 37 + 10log (13.5/135) + 12

Rw = 39 dB

This assumes the minimum correction of 5 is

applied due to favourable flanking conditions.

Ceiling height 2.7m

Rw = DnTw

CLASS C

CLASS C

= Rw= Rw= Rw= Rw

+ 10log ( ) + 7

+ 10log ( ) + 7

MINIMUM + 5

RECOMMENDED + 7

MINIMUM + 5

RECOMMENDED + 7

10m

5m

10m

Operating Theatre to Toilet





Volume of the receiving room, V = 10.8 x 5.1 = 55.1m 3

Rw = 42 + 10log (10.8/55.1) + 12

Rw = 47 dB

This assumes the minimum correction of 5 is applied due

to favourable flanking conditions.

Ceiling height 2.7m

10m

4m

5.1m

Changing Room to Changing Room





Volume of the receiving room, V = 135m3

Rw = 37 + 3 + 10log (13.5/135) + 12

Rw = 42 dB

This assumes the minimum correction of 5 is applied

due to favourable flanking conditions.

Ceiling height 2.7m

10m

5m

10m

Operating Theatre to Toilet





Volume of the receiving room, V = 10.8 x 5.1 = 55.1m 3

Rw = 42 + 3 + 10log (10.8/55.1) + 12

Rw = 50 dB



Ceiling height 2.7m

10m

4m

5.1m

It is important to determine the Rw

value inboth directions, considering each room asboth the receiving room and the sourceroom. Once this has been done, the higherof the two values and an appropriatepartition specification can be selected byfollowing the colour coded guidance tabson the next page.

sv

sv

partitions

Toilet to Operating Theatre

DnTw required = 42 dB Both rooms have a Class C ceiling covering



Volume of the receiving room, V = 10.8 x 10 = 108m 3

Rw = 42 + 10log (10.8/108) + 12

Rw = 44 dB



Ceiling height 2.7m

10m

4m

5.1m


33/152


Selecting yourpartition type

Up to: Rw 42 dB

Up to: Rw 47 dB

Up to: Rw 50 dB

Up to: Rw 54 dB

Up to: Rw 59 dB

Rw 60 dB

Partitions with doors (e.g. corridors)

A door in a partition, e.g. in a corridor, will significantly

downgrade the partitions performance. HTM 08-01 states

that where there is a door, there is no acoustic benefit in

providing partitions with an Rw higher than 4045 dB,

unless especially high performance doorsets are used.

High acoustic partitions

HTM 08-01 states that planning and layout should avoid

the need for partitions greater than DnT,w 52 dB.

Acoustic variation

The specifications have been banded to guide the specifier

to solutions that have the potential to achieve the

performances in HTM 08-01.

HTM 08-01 2.61 states that additional allowance should be

made for the room dimensions and the area of separatingwall / floor. The implication of this is that a wide range of

Rw performance requirements can result. For this reason,

it is important to calculate on a room-by-room basis.

Consulting Room to Consulting Room


Both rooms have a Class C ceiling coveringat least 80% of the floor area

Common wall area, S = 10.8m2

Volume of the receiving room, V = 36.72m3

Rw = 47 + 10log (10.8/36.72) + 12

Rw = 54 dB



Ceiling height 2.7m

3.4m

4m

3.4m

Birthing Room to Birthing Room






Rw = 52 + 10log (12.15/43.74) + 12

Rw = 59 dB



Ceiling height 2.7m

3.5m

4.5m

3.5m

Birthing Room to Birthing Room






Rw = 52 + 3 + 10log (12.15/43.74) + 12

Rw = 62 dB



Ceiling height 2.7m

3.5m

4.5m

3.5m

Selecting

partitions

See appropriate colour coded tab referencefor partition specification options






Toilet to Operating Theatre





Volume of the receiving room, V = 10.8 x 10 = 108m 3

Rw = 42 + 3 + 10log (10.8/108) + 12

Rw = 47 dB



Ceiling height 2.7m

10m

4m

5.1m


34/152


One layer of board each side of Gypframe

70 S 50 C Studs at 600mm centres.

Linings as in table.

Solutions up to Rw 42 dB




LI

F

E

T

IME

SYSTEM W

AR

RA

N

T

Y

SPE

CSURE

Table 2.1 - GypWall CLASSIC specification solutions up to Rw 42 dBHeavy

1 The maximum heights quoted are limited by the fire state field of application or by limiting deflection of L/240 at 200 Pa, whichever is the more onerous.2 These systems have an ACTIVairboard option available for VOC control to improve indoor air quality. Alternatively, all systems can be skim finished with

Thistle PureFinish which contains ACTIVairtechnology. Refer to the indoor air quality section in Background and theory.

One layer of board each side of

Gypframe 70 AS 50 AcouStuds at

600mm centres. Linings as in table.

EN BS

EN BS

System Board Available Lining Sound Partition Approx. Max. partition Systemname type with ACTIVair thickness insulation thickness weight height (mm) reference(GypWall) technology2 mm Rw dB mm kg/m

2 BS EN1

30 minutes fire resistance

1 CLASSIC SoundBloc 1 x 15 42 102 26 3800 3800 A206165


1 CLASSIC FireLine 1 x 15 37 102 24 3800 3800 A206078

2 CLASSIC FireLine 1 x 15 39 102 24 4000 4000 A206A078

1 CLASSIC SoundBloc F 1 x 15 42 102 27 3800 3800 A206301

2 CLASSIC SoundBloc F 1 x 15 42 102 27 4000 4000 A206A301


Rw42dB


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Solutions up to Rw 42 dB L

I

F

E

T

IME

SYSTEM W

AR

RA

N

T

Y

SPE

CSURE




Table 2.2 - GypWall ROBUST specification solutions up to Rw 42 dBSevere

Severeplus

EN BS


2 BS EN1


1 ROBUST DuraLine 1 x 15 42 102 29 4000 4000 Q606043

Please note that Severe plus specifications achieve a minimum of 44 dB. Refer to the next acoustic band

for GypWall EXTREME solutions.



Selecting

partitions

Upto:

Rw

42dB


36/152



I

F

E

T

IME

SYSTEM W

AR

RA

N

T

Y

SPE

CSURE

Table 2.3 - GypWall CLASSIC specification solutions up to Rw 47 dBHeavy



One layer of board each side of Gypframe92 S 50 C Studs at 600mm centres.


One layer of board each side of Gypframe92 AS 50 AcouStuds at 600mm centres.



Gypframe 70 AS 50 AcouStuds at 600mm

centres. 50mm Isover APR 1200 in the

cavity. Linings as in table.

One layer of board each side of Gypframe70 S 50 C Studs at 600mm centres.

25mm Isover APR 1200 in the cavity.



2 BS EN1



2 CLASSIC SoundBloc 1 x 15 45 124 27 4900 4000 A206A281




4 CLASSIC FireLine 1 x 15 44 102 24 4000 4000 A206A141

3 CLASSIC SoundBlocF

1 x 15 47 102 27 3800 3800 A2063025 CLASSIC FireLine 1 x 15 44 124 25 4700 4000 A206266







Rw47dB

EN BS

EN BS


37/152



I

F

E

T

IME

SYSTEM W

AR

RA

N

T

Y

SPE

CSURE

Table 2.4 - GypWall CLASSIC and ROBUST specification solutions up to Rw 47 dBSevere








Two layers of board each side of Gypframe



EN BS


2 BS EN1


3 CLASSIC WallBoard 2 x 12.5 45 122 35 4600 46002 A206015

5 ROBUST DuraLine 1 x 15 45 124 29 4900 4000 A206A277


4 CLASSIC WallBoard 2 x 12.5 47 122 35 4700 47002 A206A015


3 CLASSIC WallBoard 2 x 15 46 132 42 4900 49003 A206016


3 CLASSIC FireLine 2 x 12.5 46 122 40 4600 4200 A206079

EN BS

EN BS

Table 2.5 - GypWall EXTREME specification solutions up to Rw 47 dBSevereplus



EN BS


70 AS 50 AcouStuds at 600mm centres.



2 BS EN1


1 EXTREME Rigidur H 1 x 12.5 44 97 30 3800 3800 X606009





1 The maximum heights quoted are limited by the fire state field of application or by limiting deflection of L/240 at 200 Pa, whichever is the more onerous.2 30 minutes fire resistance to BS EN 1364-1: 1999.3 60 minutes fire resistance to BS EN 1364-1: 1999.4 These systems have an ACTIVairboard option available for VOC control to improve indoor air quality. Alternatively, all systems can be skim finished with


Selecting

partitions

Upto:

Rw47dB


38/152


Solutions up to Rw 50 dB


92 S 50 C Studs at 600mm centres.25mm Isover APR 1200 in the cavity.



Gypframe 92 S 50 C Studs at

600mm centres. 50mm Isover APR

1200 in the cavity. Linings as in table.

Table 2.6 - GypWall CLASSIC specification solutions up to Rw 50 dB

Heavy

1 The maximum heights quoted are limited by the fire state field of application or by limiting deflection of L/240 at 200 Pa, whichever is the more onerous.2 Please see Severe Duty solutions overleaf for 60, 90 and 120 minute fire resistant solutions.3 These systems have an ACTIVairboard option available for VOC control to improve indoor air quality. Alternatively, all systems can be skim finished with


LI

F

E

T

IME

SYSTEM W

AR

RA

N

T

Y

SPE

CSURE


Gypframe 70 AS 50 AcouStuds.25mm Isover APR 1200 in the cavity.


BSEN

BSEN


2 BS EN1

30 minutes fire resistance 2





60 minutes fire resistance 2





Gypframe 92 AS 50 AcouStuds.




Gypframe 70 AS 50 AcouStuds.

3 x 25mm Isover APR 1200 in the cavity.

Linings as in table

Rw50dB


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I

F

E

T

IME

SYSTEM W

AR

RA

N

T

Y

SPE

CSURE

Table 2.7 - GypWall CLASSIC and ROBUST specification solutions up to Rw 50 dBSevere

1 The maximum heights quoted are limited by the fire state field of application or by limiting deflection of L/240 at 200 Pa, whichever is the more onerous.2 30 minutes fire resistance to BS EN 1364-7: 1999.3 These systems have an ACTIVairboard option available for VOC control to improve indoor air quality. Alternatively, all systems can be skim finished with


One layer of board each side of Gypframe 70 S 60

C Studs at 600mm centres. 50mm Isover

APR 1200 in the cavity. Linings as in table.



ULTIMATE Piano Plus 20 kg/m3 in the cavity.



Modular Roll in the cavity. Linings as in table.

Two layers of board each side of Gypframe 70 S 50

C Studs at 600mm centres. Linings as in table.

Two layers of board each side of Gypframe 70 S 50

C Studs at 600mm centres. 25mm Isover APR 1200

in the cavity. Linings as in table.


C Studs at 600mm centres. 25mm Isover APR 1200

in the cavity. Linings as in table.


2 BS EN1


7 ROBUST DuraLine 1 x 15 48 102 29 4000 4000 Q606A044

6 ROBUST DuraLine 1 x 15 48 124 29 4900 4000 A206258

5 CLASSIC WallBoard 2 x 12.5 49 122 35 4600 46002 A206047

4 CLASSIC SoundBloc 2 x 12.5 49 122 43 4600 4600 A206166


9 ROBUST DuraLine 1 x 15 50 124 29 4900 4000 A206A278


8 CLASSIC FireLine 2 x 12.5 49 49 40 4600 4200 A206A079




One layer of board each side of Gypframe 70 AS 50

AcouStuds at 600mm centres. 25mm Isover

APR 1200 in the cavity. Linings as in table.

Table 2.8 - GypWall EXTREME specification solutions up to Rw 50 dBSevereplus



EN BS

EN BS


2 BS EN1





One layer of board each side of Gypframe 92 AS 50

AcouStud