021-ec scope of works

8/4/2019 021-EC Scope of Works

1/33

\\Lon1fs04\bdg-lon1-data a\Workplace\2001428 Electoral Commission\admin\11 SPECS & SCHED\11.06 Scope of Works\EC Sow

200810.doc

OutlineScope of Works

3 Bunhill Row

London

SSUED FOR INFORMATION

nd September 2010

33 St John StreetLondonEC1M 4AATelephone 020 7559 740


2/33

F:\Workplace\2001428 Electoral Commission\admin\11 SPECS & SCHED\11.06 Scope of Works 2

DOCUMENT PARTICULARS

REVISION ISSUE AUTHOR CHECKED DATE / INFORMATION TK PH 02.09.10

A INFORMATION(1.07 Vend area worksRevised)

TK CH 23.09.10


3/33


CONTENTS

Introduction & Design Preliminaries

1.00 Seventh Floor Refurbishment Work


4/33


INTRODUCTION & DESIGN PRELIMINARIES

This Scope of Works is to be read in conjunction with BDG workfutures Drawing Register andrelates to the interior design intent at 3 Bunhill Row, London

The contractor is advised to carry out the necessary site checks and satisfy themselves thatthey understand the building.

The following conditions are to be read in conjunction with John Packer Associates andTurner & Townsends associated contract documentation.

Where specifications refer to TBA/TBC descriptions given are to assist an understanding ofoverall provision and quality rather than definitive specification/scope

The following conditions are to be read in conjunction with the current and relevant contract

documentation.

MATERIALS AND WORK GENERALLY

GOOD PRACTICE: Where and to the extent that materials, products and workmanship arenot fully detailed or specified they are to be:

Of a standard appropriate to the Works and suitable for the functions stated in or reasonablyto be inferred from the project documents, and

In accordance with relevant good building practice.

GENERAL QUALITY OF PRODUCTS: Products to be new unless otherwise specified. For products specified to a British or European Standard obtain certificates of compliance

from manufacturers when requested by CA. Where a choice of manufacturer or source of supply is allowed for any particular product,

the whole quantity required to complete the work must be of the same type, manufactureand/or source unless otherwise approved. Produce written evidence of sources of supplywhen requested by CA.

Ensure that the whole quantity of each product required to complete the work is ofconsistent kind, size, quality and overall appearance.

Where consistency of appearance is desirable ensure consistency of supply from the samesource. Unless otherwise approved do not use different colour batches where they can beseen together.

If products are prone to deterioration or have a limited shelf life, order in suitable quantitiesto a programme and use in appropriate sequence. Do not use if there are any signs ofdeterioration, setting or other unsatisfactory condition.

CHECKING COMPLIANCE OF PRODUCTS

Check all delivery tickets, labels, identification marks and, where appropriate, the productsthemselves to ensure that all products comply with the project documents. Where differenttypes of any product are specified, check to ensure that the correct type is being used ineach location. In particular, check that:

The sources, types, qualities, finishes and colours are correct, and match any approvedsamples.

All accessories and fixings which should be supplied with the goods have been supplied.

Sizes and dimensions are correct. Where tolerances of components are critical, measure asufficient quantity to ensure compliance.

The delivered quantities are correct, to ensure that shortages do not cause delays in the


5/33


work.

The products are clean, undamaged and otherwise in good condition.

Products which have a limited shelf life are not out of date.

Where materials are sourced alternatively to the specified item, the contractor shouldendeavour to identify the location and nature of that material to demonstrate its suitability.

Where paints and other surface coatings and liquid treatments are to be used, as a

minimum these should comply with the general environmental requirements stipulated by:

The Paint Research Association,8 Waldegrave Road,Teddington,Middlesex, TW11 8LD.

+44 (0)20 8614 4800

All paints and associated materials should be strictly controlled in use on site and disposedof in accordance with the prevailing Local Authority guidelines.

TIMBER SOURCING

Timber, whether soft wood or hardwood species should be sourced from sustainablymanaged suppliers that The Forestry Stewardship Council approved supplier rating and

accredited certifying bodies such as:

BM TRADA CertificationMr. Alasdair McGregorStocking lane, Hughenden Valley, High Wycombe, Bucks HP14 4NDUnited KingdomTel: +44 (0) 1494 569700 Fax: + 44 (0) 1494 565487E-mail: [email protected]: www.bmtrada.com

Provide, where timbers are imported, the Phytosanitary Certification and other documentsas required to ensure that the chain of custody is documented. Contact FSC for furtherdetails if required below:

Sofia Ryder, Policy Officerpolicy.standards at fsc.org

Forest Stewardship Council

FSC International Center BonnCharles-de-Gaulle Str. 553113 Bonn GermanyTel: +49 (0) 2 28 / 3 67 66 0Fax: +49 (0) 2 28 / 3 67 66 30E-mail: fsc at fsc.org

Web: www.fsc.org

PROHIBITED MATERIALS:The following materials are expressly forbidden from use.

Any substances reasonably known to be deleterious to health at time of use oridentified as such by the Building Research Establishment.

Asbestos (in any form, see Crocodilite).

Calcium silicate bricks.

Clayboard void former. Concrete containing added calcium chloride as a setting agent.

Crocodilite.


6/33


Galvanised cavity wall ties.

High alkali cement not conforming to British Standards used with aggregatescontaining silica.

High alumina cement or concrete.

Lead or any products containing lead used internally. Lead or lead products (unlessdirectly required for repairs to existing products to be brought to the attention of the

CA prior to commencement). Materials containing fibres less than 3 microns diameter.

Polyisocyanate or polyurethane foam.

Sea dredged aggregates.

Timbers (either soft or hardwood, temperate or tropical) from non-certificated orresponsibly managed sources. NB. The contractor will be required to provideevidence of compliance from such schemes as the Forest Stewardship Council orsimilar recognised independent certifying body as indicated in Clause 140.

Timber treatments including Lindane and polychlorinated products and theirderivatives.

Urea formaldehyde foam or materials containing formaldehyde.

Woodwool slabs used for permanent shuttering.

PROTECTION OF PRODUCTS

Prevent over-stressing, distortion and any other type of physical damage. Keep clean and free from contamination. Prevent staining, chipping, scratching or other

disfigurement, particularly of products exposed to view in the finished work. Keep dry and in a suitably low humidity atmosphere to prevent premature setting, moisture

movement and similar defects. Where appropriate store off the ground and allow free airmovement around and between stored products.

Prevent excessively high or low temperatures and rapid changes of temperature in theproducts.

Protect adequately from rain, damp, frost, sun and other elements as appropriate. Ensure

that products are at a suitable temperature and moisture content at time of use. Ensure that sheds and covers are of ample size, in good weatherproof condition and well

secured. Keep different types and grades of products separately and adequately identified. So far as possible keep products in their original wrappings, packings or containers, until

immediately before they are used. Wherever possible retain protective wrappings after fixing and until shortly before Practical

Completion. Ensure that protective measures are fully compatible with and not prejudicial to the

products/materials.

SUITABILITY OF RELATED WORK AND CONDITIONS: Ensure that all trades are providedwith necessary details of related types of work. Before starting each new type or section of

work, ensure that: Previous, related work is appropriately complete, in accordance with the project documents,

to a suitable standard and in a suitable condition to receive the new work. All necessary preparatory work has been carried out, including provision for services,

openings, supports, fixings, damp proofing, priming and sealing. The environmental conditions are suitable, particularly that the building is suitably weather

tight when internal components, services and finishes are installed.

GENERAL QUALITY OF WORKMANSHIP

Operatives must be appropriately skilled and experienced for the type and quality of work. Take all necessary precautions to prevent damage to the work from frost, rain and other

hazards. Inspect components and products carefully before fixing or using and reject any, which are


7/33


defective. Fix or lay securely, accurately and in alignment. Where not specified otherwise, select fixing and jointing methods and types, sizes and

spacings of fastenings in compliance with section Z20. Fastenings to comply with relevantBritish Standards.

Provide suitable, tight packings at screwed and bolted fixing points to take up tolerances

and prevent distortion. Do not over tighten fixings. Adjust location and fixing of components and products so that joints, which are to be

finished with mortar or sealant or otherwise left open to view, are even and regular. Ensure that all moving parts operate properly and freely. Do not cut, grind or plane pre-

finished components and products to remedy binding or poor fit without approval.

WATER FOR THE WORKS: Clean and uncontaminated. If other than mains supply isproposed provide evidence of suitability. Test to BS 3148 if instructed.

SAMPLES/APPROVALS

APPROVAL OF PRODUCTS: Where approval of a product is specified the requirement for

approval relates to a sample of the product and not to the product as used in the Works.Submit a sample or other evidence of suitability. Do not confirm orders or use the productuntil approval of the sample has been obtained. Retain approved sample in good, cleancondition on site. Ensure that the product used in the Works matches the approved sample.

SAMPLES OF FINISHED WORK: Where a sample of finished work is specified forapproval, the requirement for approval relates to the sample itself. (If approval of thefinished work as a whole is required this is specified separately). Obtain approval of thestated characteristic(s) of the sample before proceeding with the Works. Retain approvedsample in good, clean condition on site. Ensure that the relevant characteristic(s) of theWorks match the approved characteristic(s) of the sample. Remove samples, which are notpart of the finished Works when no longer required.

APPROVALS: Where and to the extent that products or work are specified to be approvedor the CA instructs or requires that they are to be approved, the same must be supplied andexecuted to comply with all other requirements and in respect of the stated or impliedcharacteristics either:

To the express approval of the CA or To match a sample expressly approved by the CA as a standard for the purpose.

APPROVALS: Inspection or any other action by the CA must not be taken as approval ofproducts or work unless the CA so confirms in writing in express terms referring to:

Date of inspection Part of the work inspected Respects or characteristics which are approved Extent and purpose of the approval

Any associated conditions.

ACCURACY/SETTING OUT GENERALLYACCURACY OF INSTRUMENTS: Use instruments and methods described in BS 5606,Appendix A.

SETTING OUT: Submit details of methods and equipment to be used in setting out theWorks.

SETTING OUT: Check the levels and dimensions of the site against those shown on thedrawings, and record the results on a copy of the drawings. Notify CA in writing of anydiscrepancies and obtain instructions before proceeding.

SETTING OUT: Inform CA when overall setting out is complete and before commencingconstruction.


8/33


APPEARANCE AND FIT: Arrange the setting out, erection, juxtaposition of components and application of finishes

(working within the practical limits of the design and the specification) to ensure that there issatisfactory fit at junctions, that there are no practically or visually unacceptable changes inplane, line or level and that the finished work has a true and regular appearance.

Wherever satisfactory accuracy, fit and/or appearance of the work are likely to be critical ordifficult to achieve, obtain approval of proposals or of the appearance of the relevantaspects of the partially finished work as early as possible.

Without prejudice to the above and unless specified otherwise, tolerances will (whereapplicable) be not greater than those given in BS 5606, Tables 1 and 2.

RECORD DRAWINGS: Record details of all grid lines, setting-out stations, benchmarks andprofiles on the site setting-out drawing. Retain on site throughout the contract and hand toCA on completion.

SERVICES GENERALLY (REFER TO JOHN PACKER ASSSIOCIATES DRAWINGS &DOCUMENTATION)

SERVICES REGULATIONS: Any work carried out to or which affects new or existingservices must be in accordance with the Bye Laws or Regulations of the relevant StatutoryAuthority.

WATER REGULATIONS/BYELAWS NOTIFICATION: Notify the Water Undertaker of anywork carried out to or which affects new or existing services and submit any required plans,diagrams and details. Allow adequate time to receive the Undertaker's consent beforestarting work. Inform the CA immediately if consent is withheld or is granted subject tosignificant conditions.

WATER REGULATIONS/BYELAWS CONTRACTOR'S CERTIFICATE: On completion ofthe work, submit to the CA (and where required also to the Water Undertaker) a certificate

including: The address of the premises. A brief description of the new installation and/or work carried out to an existing installation. The Contractor's name and address. A statement that the installation complies with the relevant Water Regulations or Byelaws. The name and signature of the individual responsible for checking compliance. The date on which the installation was checked.

SERVICE RUNS: Make adequate provision for services, including unobstructed routes andfixings. Wherever possible ducts, chases and holes are to be formed during constructionrather than cut.

MECHANICAL AND ELECTRICAL SERVICES must have final tests and commissioningcarried out so that they are in full working order at practical completion.

WORK AT/OR AFTER COMPLETION

GENERALLY: Make good all damage consequent upon the work. Remove all temporary markings, coverings and protective wrappings unless otherwise

instructed. Clean the works thoroughly inside and out, including all accessible ducts and voids, remove

all splashes, deposits, efflorescence, rubbish and surplus materials consequent upon theexecution of the work.


9/33


Cleaning materials and methods to be as recommended by manufacturers of productsbeing cleaned, and to be such that there is no damage or disfigurement to other materials orconstruction.

Obtain COSHH dated data sheets for all materials used for cleaning and ensure they areused only as recommended by their manufacturers.

Touch up minor faults in newly painted/repainted work, carefully matching colour, and

brushing out edges. Repaint badly marked areas back to suitable breaks or junctions. Adjust, ease and lubricate moving parts of new work as necessary to ensure easy and

efficient operation, including doors, windows, drawers, ironmongery, appliances, valves andcontrols.

SECURITY AT COMPLETION: Leave the Works secure with all accesses locked. Accountfor and adequately label all keys and hand over to Employer with itemised schedule,retaining duplicate schedule signed by Employer as a receipt.

MAKING GOOD DEFECTS: Make arrangements with the design teamand give reasonable notice of the precise dates for access to the various parts of the Worksfor purposes of making good defects. Inform CA when remedial works to the various parts

of the Works are completed.

SECURITY/SAFETY/PROTECTION

GENERALLY

CONSTRUCTION HAZARDS arising from the project are to be managed by the contractor.Common hazards which should be controlled by good management and site practice. Referto the Planning Supervisor listed and the Health and Safety Plan for supporting information.Design Risk Assessments have been carried out by BDGworkfutures and are containedwithin the Health and Safety File lodged with the Planning Supervisor.

HEALTH HAZARDS: Hazardous substances: Site personnel levels must not exceed occupational exposure

standards and maximum exposure limits stated in the controlling HSE document. Wheresubstances are controlled by the COSHH regulations the appropriate certification will berequired. The contractor should take all reasonable precautions to ensure all operatives andattendees are not exposed to such materials.

HSE APPROVED CODES OF PRACTICE: Comply with the following: Management of health and safety at work. Managing construction for health and safety.

SECURITY: Adequately safeguard the site, the Works, products, materials, plant, and any

existing buildings affected by the Works from damage and theft. Take all reasonableprecautions to prevent unauthorised access to the site, the Works and adjoining property.

STABILITY: Accept responsibility for the stability and structural integrity of the Works duringthe Contract, and support as necessary. Prevent overloading: details of design loads maybe obtained from CA.

EMPLOYER'S REPRESENTATIVES SITE VISITS: Inform the CA in advance of all safetyprovisions and procedures (including those relating to materials which may be deleterious)which will require the compliance of the Employer or the Employer's representatives whenvisiting the site. Provide protective clothing and/or equipment for the Employer and theEmployer's representatives as appropriate.

PROTECT AGAINST THE FOLLOWING:


10/33


NOISE: Comply generally with the recommendations of BS 5228: Part 1, clause 9.3 for minimising

noise levels during the execution of the Works. Fit all compressors, percussion tools and vehicles with effective silencers of a type

recommended by manufacturers of the compressors, tools or vehicles. Do not use or permit employees to use radios or other audio equipment in ways or at times

which may cause nuisance.

POLLUTION: Take all reasonable precautions to prevent pollution of the site, the Works andthe general environment including streams and waterways. If pollution occurs, inform theappropriate Authorities and the CA without delay and provide them with all relevantinformation.

USE OF PESTICIDES: will not be permitted.

NUISANCE: Take all necessary precautions to prevent nuisance from smoke, dust, rubbish,vermin and other causes.

ASBESTOS BASED MATERIALS: Report immediately to the CA any suspected asbestosbased materials discovered during demolition/refurbishment work. Avoid disturbing suchmaterials. Agree with the CA methods for safe removal or encapsulation.

FIRE PREVENTION: Take all necessary precautions to prevent personal injury, death, anddamage to the Works or other property from fire. Comply with Joint Code of Practice 'FirePrevention on Construction Sites' published by the Building Employers Confederation andthe Loss Prevention Council.

FIRE PREVENTION: Smoking will not be permitted on the site except in designated areas,which must be carefully controlled, equipped with fire fighting equipment and receptacles forthe safe disposal of smokers materials, and inspected to guard against risk of fire.

BURNING ON SITE of materials arising from the work will not be permitted.

WATER: Prevent damage from storm and surface water. (Items for keeping the site andexcavations free of water are given elsewhere).

MOISTURE: Prevent the work from becoming wet or damp where this may cause damage.Dry out the Works thoroughly. Control the drying out and humidity of the Works and theapplication of heat to prevent:

Blistering and failure of adhesion. Damage due to trapped moisture. Excessive movement.

INFECTED TIMBER: Where instructed to remove timber affected by fungal/insect attackfrom the building, do so in a way, which will minimise the risk of infecting other parts of thebuilding, and destroy by burning as soon as possible.

WASTE: Remove rubbish, debris, surplus material and spoil, regularly and keep the site and Works

clean and tidy. Remove all rubbish, dirt and residues from voids and cavities in the construction before

closing in. Ensure that non-hazardous material is disposed of at a tip approved by a Waste Regulation

Authority. Remove all surplus hazardous materials and their containers regularly for disposal off site in

a safe and competent manner, as approved by a Waste Regulation Authority and in

accordance with relevant regulations. Retain waste transfer documentation on site.


11/33


ELECTROMAGNETIC INTERFERENCE: Take all necessary precautions to avoidexcessive electromagnetic disturbance of apparatus outside the site.

LASER EQUIPMENT: Install, use and store construction laser equipment in accordance with BS EN 60825-1 and

the manufacturers instructions. Use either Class 1 or Class 2 laser equipment ensuring that the laser beam is not set at eye

level and is terminated at the end of its useful path. The use of Class 3A and Class 3B laser equipment will not be permitted without the

approval of the CA and subject to the submission of a method statement on its safe use.

PROTECT THE FOLLOWING:

WORK IN ALL SECTIONS: Adequately protect all types of work and all parts of the Works,including work carried out by others, throughout the Contract. Wherever work is of anespecially vulnerable nature or is exposed to abnormal risks provide special protection toensure that damage does not occur.

NB Ensure control panel is protected at all times. Regularly communicate with staff through-out works to ensure they are aware of all planned activities through daily briefing sessions.

EXISTING SERVICES: Notify all service authorities and/or adjacent owners of the proposed works not less than

one week before commencing site operations. Before starting work check and mark positions of existing mains/services. Where positions

are not shown on drawings obtain relevant details from service authorities or other owners. Observe service authority's recommendations for work adjacent to existing services. Adequately protect, and prevent damage to all services. Do not interfere with their operation

without consent of the service authorities or owners. Identify below ground services with signboards, giving type and depth, and overhead

services with headroom markers. If any damage to services results from the execution of the Works, immediately notify CA

and appropriate service authority. Make arrangements for the work to be made good withoutdelay to the satisfaction of the service authority or owner as appropriate. Any measurestaken by the CA to deal with an emergency will not affect the extent of the Contractor'sliability.

Replace marker tapes or protective covers disturbed during site operations to the serviceauthority's recommendations.

ROADS AND FOOTPATHS: Adequately maintain roads and footpaths within and adjacentto the site and keep clear of mud and debris. Any damage to roads and footpaths caused bysite traffic or otherwise consequent upon the Works must be madegood to the satisfaction of the Local Authority or other

owner. Bear any costs arising.

EXISTING FEATURES: Prevent damage to existing buildings, fences, gates, walls, roads, paved

areas and other site features, which are to remain in position during the execution of the Works.

EXISTING WORK: Prevent damage to existing property undergoing alteration or extensionand make good to match existing any defects so caused. Remove existing work theminimum necessary and with care to reduce the amount of making good to a minimum.

BUILDING INTERIORS: Protect building interiors exposed to weather during the course ofalteration work with temporary enclosures of sufficient size to permit execution of the workand which will remain weather tight in severe weather.


12/33


EXISTING STRUCTURES: Check proposed methods of work for effects on adjacent structures inside and outside the

site boundary. Provide and maintain during the execution of the Works all incidental shoring, strutting,

needling and other supports as may be necessary to preserve the stability of existingstructures on the site or adjoining that may be endangered or affected by the Works.

Support existing structure as necessary during cutting of new openings or replacement ofstructural parts.Monitor adjacent structures and immediately report excessive movement to the CA.

Do not remove supports until new work is strong enough to support the existing structure.Prevent over-stressing of completed work when removing supports.


13/33


1.00 Seventh floor refurbishment work

item drawingseries

1.01 300 Builders Work

Demolitions and removals as required by the scheme in general. Refer also toservices specification re elements/items to be retained for reuse.

1.02 360 Floor Finishes

Main open plan / office carpet. Ref: Desso Neo Core colour ref: A818 9980

Meeting Room Feature Carpet Desso Neo colour ref: A782 9511

Vinyl flooring to Store Rooms & Copy / Print areas Altro sheet vinyl Ref:Maxis Suprema Colour Ref: Thor SU2014 (floor to be laid on 6mm ply fixedat 100mm centres)

Additional Comms Room flooring To match existing raised accesscomputer floor.

Existing Vend area flooring to be retained, protected and cleaned.

Existing Comms Room flooring to be retained and protected.

All floor finish junctions to have Schluter floor trims, Ref: schiene, s/steel finish orsimilar approved.

For carpet laying directions and seam lines to floor finishes refer to the floor finishdrawing:

Drwg No. EC/07/GA/360/01

GENERAL REQUIREMENTS

WORKMANSHIP GENERALLY Base condition after preparation: Rigid, dry, sound, smooth and free from

grease, dirt and other contaminants.

Finished coverings: Accurately fitted, tightly jointed, securely bonded,smooth and free from air bubbles, rippling, adhesive marks and stains.

LAYOUT - ROLL MATERIALS

Setting out of seams: Before placing orders agree setting out for sheetingtypes M50

COMMENCEMENT

Required condition of works prior to laying materials:- Building is weathertight and well dried out.

- Wet trades have finished work.- Paintwork is finished and dry.


14/33


- Conflicting overhead work is complete.- Floor service outlets, duct covers and other fixtures around whichmaterials are to be cut are fixed.

Notification: Submit not less than 48 hours before commencing laying.

CONDITIONING

Prior to laying: Condition materials by unpacking and separating in spaceswhere they are to be laid. Maintain resilient flooring rolls in an uprightposition. Unroll carpet and keep flat on a supporting surface.

Conditioning time and temperature (minimum): As recommended bymanufacturer with time extended by a factor of two for materials stored ortransported at a temperature of less than 10C immediately prior to laying.

ENVIRONMENT

Temperature and humidity: Before, during and after laying, maintainapproximately at levels which will prevail after building is occupied.

Ventilation: Before during and after laying, maintain adequate provision.

PREPARING BASES

NEW BASES

Suitability of bases and conditions within any area: Commencement oflaying of coverings will be taken as acceptance of suitability.

EXISTING BASES

Notification: Before commencing work, confirm that existing bases will, afterpreparation, be suitable to receive coverings.

Suitability of bases and conditions within any area: Commencement oflaying of coverings will be taken as acceptance of suitability.

NEW WET LAID BASES

Base drying aids: Not used for at least four days prior to moisture contenttesting.

Base moisture content test: Carry out in accordance with BS 5325, AnnexeA or BS 8203, Annexe A.- Locations for readings: In all corners, along edges, and at various pointsover area being tested.

Commencement of laying coverings: Not until all readings show 75%relative humidity or less.

SUBSTRATES TO RECEIVE THIN COVERINGS

Trowelled finishes: Uniform, smooth surface free from trowel marks andother blemishes. Abrade suitably to receive specified floor coveringmaterial.

SMOOTHING/ LEVELLING UNDERLAYMENT COMPOUND

Type: Self-levelling as required.

Selection: As recommended by covering manufacturer.

EXISTING FLOOR COVERINGS REMOVED

Substrate: Clear of covering and as much adhesive as possible. Skim withsmoothing underlayment compound to give smooth, even surface.

PLYWOOD UNDERLAY (WHERE AND IF REQUIRED)

Standard: An approved national standard.

Bonding quality: To BS EN 314-2 class

Appearance: To BS EN 635 class. Finish: smooth finish

Thickness: 6 mm.


15/33


Sheet size: standard size

Substrate: Existing floor boards securely fixed and acceptably level with nogross irregularities or protruding fasteners.

Laying sheets: Stagger cross joints such that no joint within base andunderlay is coincident and with a 0.51 mm gap between sheets.

Fasteners: 25 mm ring shanked or twisted shank nails or divergent staples.

- Location: Commencing at centre of one side of each sheet, at 150 mmgrid centres over area of each sheet and at 100 mm centres alongperimeter, set in 12 mm from edge.- Placement: Driven with heads set flush with surface, and not projectingthrough underside of base. Not deformed.

LAYING COVERINGS

SETTING OUT TILES

Method: Set out from centre of area/ room, so that wherever possible:- Tiles along opposite edges are of equal size.- Edge tiles are more than 50% of full tile width.

ADHESIVE FIXING GENERALLY Adhesive: Type to be as specified, recommended by covering/ underlay

manufacturer or as approved.

Primer: Use and type as recommended by adhesive manufacturer.

Application: As necessary to achieve good bond.

Finished surface irregularities: Trowel ridges and high spots caused byparticles on the substrate not acceptable.

DOORWAYS

Joint location: On centre line of door leaf.

EDGINGS/ COVER STRIPS

Manufacturer: Cat Cover Trimsor equivalent.- Product reference: Contractor to advise for approval

TRAFFICKING AFTER LAYING

Covering types: Normal protection

COMPLETION

FINISHING carpet/vinyl FLOORING

Cleaning operations:- Wash floor with water containing neutral (pH 6-9) detergent. If necessary,lightly scrub heavily soiled areas.

- Rinse with clean water, removing surplus to prevent damage to adhesive.Allow to dry.

Emulsion polish: Two coats of a type recommended by coveringmanufacturer.

WASTE

Spare covering material: Retain suitable material for patching. Oncompletion submit pieces for selection. Hand over selected pieces toEmployer.

1.03 400 New & Reused / Relocated Partitions


16/33


Setting Out:Generally solid partitions to be taken up to underside of suspended ceiling. Commsroom partition to be slab to slab as existing. Partitions to be centred on the ceilinggrid or tile.

TYPE A - SOLID ACOUSTIC MEETING ROOM PARTITIONSREUSE EXISTING RE-LOCATABLE SOLID PARTITION COMPONENTS WHEREPOSSIBLE. WHERE ADDITIONAL SECTIONS ARE REQUIRED THEY SHOULDMATCH THE EXISITNG SYSTEM, TYPICAL SPEC TO BE FROM RAISED FLOORTO UNDERSIDE OF SUSPENDED CEILING. CONSTRUCTED OF 2 NO. LAYERSOF 12.5MM SOUNDBLOC EITHER SIDE OF 48MM METAL STUDS WITH 25MMISOVER APR 1200 IN CAVITY. 12MM PLY PATRESS AS REQUIRED. NEWMECHANICALLY FIXED ACOUSTIC BAFFLES IN CEILINGS VOIDS AND CROSSTALK ATTENUATORS AS REQUIRED.

TYPE B - NEW MEETING ROOM GLAZED FRONTS / FINSREUSE EXISTING RE-LOCATABLE SINGLE GLAZED PARTITION SYSTEM.

WHERE ADDITIONAL SECTIONS ARE REQUIRED THEY SHOULD MATCH THEEXISTING SYSTEM.ALLOW FOR DUSTED CRYSTAL VINYL MANIFESTATION, 50% COVERAGE,FINAL DESIGN TBC.NEW MECHANICALLY FIXED ACOUSTIC BAFFLES IN CEILINGS VOIDS WITHCROSS TALK ATTENUATORS AS REQUIRED.

TYPE C - GLAZED FRONT TO BOARDROOM.DOUBLE GLAZED UNIT WITH INTEGRAL BLIND FROM RAISED FLOOR TOUNDERSIDE OFSUSPENDED CEILING. PROPOSED SYSTEM TO MATCHEXISTING SINGLE GLAZED SYSTEM.ALLOW FOR DUSTED CRYSTAL VINYL MANIFESTATION, 50% COVERAGE,

FINAL DESIGN TBC.NEW MECHANICALLY FIXED ACOUSTIC BAFFLES IN CEILINGS VOIDS WITHCROSS TALK ATTENUATORS AS REQUIRED.

TYPE D - COPY / PRINT AREA PARTITIONS / NIB WALLSREUSE EXISTING RE-LOCATABLE SOLID PARTITION COMPONENTS WHEREPOSSIBLE. WHERE ADDITIONAL SECTIONS ARE REQUIRED THEY SHOULDMATCH THE EXISITNG SYSTEM, TYPICAL SPEC TO BE FROM RAISED FLOORTO UNDERSIDE OF SUSPENDED CEILING CONSTRUCTED OF 2 NO. LAYERSOF 12.5MM WALLBOARD EITHER SIDE OF 48MM METAL STUDS. 12MM PLYPATRESS AS REQUIRED.

TYPE E - LOCKER & OPEN SHELVING PLASTERBOARD NIBS / BULKHEAD.REUSE EXISTING RE-LOCATABLE SOLID PARTITION COMPONENTS WHEREPOSSIBLE. WHERE ADDITIONAL SECTIONS ARE REQUIRED THEY SHOULDMATCH THE EXISITNG SYSTEM, TYPICAL SPEC TO BE FROM RAISED FLOORTO UNDERSIDE OF SUSPENDED CEILING CONSTRUCTED OF 2 NO. LAYERSOF 12.5MM WALLBOARD ON 48MM METAL STUDS.

TYPE F - NEW STORE ROOM PARTITION (30 MIN FIRE RATING)AS TYPE 'D' - FIRE RATING TO BE CONFIRMED WITH PARTITION SUPPLIER.

TYPE G - NEW COMMS ROOM PARTITION (ALLOW FOR 60 MIN FIRE RATING)SLAB TO SLAB, SPEC TO MATCH EXISTING.


17/33


Note:Where partitions back on to post room or computer room, moisture board andmoisture resistant ply board only required to shower room side.

Refer to Drwg Nos - EC/07/GA/400/01

GENERAL TECHNICAL REQUIREMENTS

Drawing references: Fully cross reference with 400 Series

Manufacturer:British Gypsum or equivalent.

Studs:- Types: Metal stud 48mm and 70mm to suit height as required.- Centres: 600mm

Head condition: Proprietary deflection joint to suspended ceiling.- Head deflection allowance: To manufacturers recommendations.

Linings: Ply substrate NB refer to general conditions for BDGworkfuturestimber sourcing policy. 12mm plywood.

Cavity insulation: 25mm ISOWOOL 1200 to achieve minimum of 42dbsound reduction and higher where specified.

Finishing: Mist coat and two full top coats.- Primer/ sealer: All boards to be sealed to manufacturersrecommendation.

Accessories: To manufacturers recommendation.

WALL LINING SYSTEM (METAL STUDS)Drawing references: 400 series.

Manufacturer:British Gypsum or equivalent.

- Product reference:refer to aboveor equivalent.

Studs: 48mm as indicated on drawings.- Type: metal- Centres: 600 mm.

Cavity width: Refer to drawings.

Head condition: Deflection joint to suit location.- Head deflection allowance: To suit requirements

Cavity insulation: ISOWOOL refer to drawings.

Linings: Ply substrate refer to drawings.

Finishing: Refer to M60- Primer/ sealer: Proprietary board sealer.

Accessories: As required by manufacturer.

GENERALADDITIONAL SUPPORTS

Framing: Accurately position and securely fix to fully support:- Partition heads: Running parallel with, but offset from main structuralsupports.- Fixtures, fittings and service outlets: To suit fixings. Mark framingpositions clearly and accurately on linings.- Board edges and lining perimeters: As recommended by boardmanufacturer to suit type and performance of board.

NEW WET LAID BASES

DPCs: Install under partitions/ freestanding wall linings, cut to full width of


18/33


partition/ lining.

INSTALLATION

DRY LININGS GENERALLY

General: Use fixing, jointing and finishing materials, components and

installation methods recommended by board manufacturer. Cutting plasterboards: Neatly and accurately without damaging core or

tearing paper facing.- Cut edges: Minimize and position at internal angles wherever possible.Mask with bound edges of adjacent boards at external corners.

Fixings plasterboards: Securely and firmly to suitably prepared andaccurately levelled backgrounds.

Finishing: Neatly to give flush, smooth, flat surfaces free from bowing andabrupt changes of level.

METAL FRAMING FOR PARTITIONS/ WALL LININGS

Setting out: Accurately aligned and plumb.- Stud positions: Equal centres to suit specified linings, maintainingsequence across openings.- Additional studs: To support vertical edges of boards.

Fixing centres at perimeters (maximum): 600 mm.

Openings: Form accurately, including:- Doorsets: Sleeved/ boxed metal studs and/ or suitable timber framing toachieve strength grade requirements for framing assembly and adequatelysupport weight of door.- Services penetrations: Allow for associated fire stopping.

METAL FURRINGS FOR WALL LININGS

Setting out: Accurately aligned and plumb.- Vertical furring positions: Equal vertical centres to suit specified linings,

maintaining sequence across openings. Position adjacent to angles,openings and movement joints, etc.- Additional vertical furrings: At junctions with partitions.- Horizontal furring positions: To provide continuous support to edges ofboards.

Adhesive bedding to furrings:- Dabs (at least 200 mm long): To ends of furrings and thereafter at 450mm (maximum) centres.- Junctions with partitions: Continuous bed with no gaps across cavity.

SUSPENDED CEILING GRIDS

Setting out: Accurately aligned and level.- Grid members and hangers: Centres to suit specified linings and imposed

loads.- Additional grid members: To provide bracing and stiffening as necessaryat upstands, partition heads, access hatches, etc.

Fixing: Securely at perimeters, grid joints, top and bottom hanger fixings.

INSTALLING MINERAL WOOL INSULATION

Fitting: Accurately and firmly with closely butted joints and no gaps.

Widths: Lay insulation in the widest practical widths to suit grid memberspacings.

Services: Do not cover electrical cables that are not sized accordingly.- Ceilings: Cut insulation carefully around electrical fittings, etc. Do not layover luminaires.

Fixing:- Partitions/ wall linings: Fasten insulation at head of frame to preventdisplacement, unless insulation is self supporting and friction fitted between


19/33


20/33


Surfaces exposed to view: Horizontal joints not permitted.- Exception: Where height of partition/ lining exceeds maximum availablelength of board. Agree positions of joints.

Two layer boarding: Stagger joints between layers by at least 600 mm.

Provide support to edges of boards with additional framing.- Two layer boarding: Support edges of outer layer.

INSULATION BACKED PLASTERBOARD

General: Do not damage insulation or cut it away to accommodateservices.

Installation at corners: Carefully cut back insulation or plasterboard asappropriate along edges of boards to give a continuous plasterboard face,with no gaps in insulation.

FIXING PLASTERBOARD TO METAL FRAMING/ FURRINGS

Fixing to framing/ furrings: Securely and firmly working from the centre ofeach board at the following centres (maximum):- Partitions/ wall linings: 300 mm. Reduce to 200 mm at external angles.- Ceilings: 230 mm. Reduce to 150 mm at board ends and at liningperimeters.

Position of screws from edges of boards (minimum): 10 mm.- Screw heads: Set in a depression. Do not break paper or gypsum core.

FIXING INSULATION BACKED PLASTERBOARD TO METAL FURRINGS

Fixing to furrings: In addition to screw fixings (clause 590) apply continuousbeads of adhesive sealant to furrings.

FIXING PLASTERBOARD TO TIMBER

Fixing to timber: Securely and firmly working from the centre of each boardat the following centres (maximum):- Nail fixing: 150 mm.

- Screw fixing to partitions/ wall linings: 300 mm. Reduce to 200 mm atexternal angles.- Screw fixing to ceilings: 230 mm.

Position of nails/ screws from edges of boards (minimum):- Bound edges: 10 mm.- Cut/ unbound edges: 13 mm.

Position of nails/ screws from edges of timber supports (minimum): 6 mm.

FIXING PLASTERBOARD WITH ADHESIVE DABSDo not use adhesive dabs.

FINISHING

LEVEL OF DRY LINING ACROSS JOINTS Sudden irregularities: Not permitted.

Joint deviations: Measure from faces of adjacent boards using methodsand straightedges (450 mm long with feet/ pads) to BS 8212, clause 3.3.5.- Tapered edge joints:

Permissible deviation (maximum) across joints when measured with feetresting on boards: 3 mm.- External angles:

Permissible deviation (maximum) for both faces: 4 mm.- Internal angles:

Permissible deviation (maximum) for both faces: 5 mm.

SEAMLESS JOINTING TO PLASTERBOARDS

Cut edges of boards: Lightly sand to remove paper burrs. Filling and taping: Fill joints, gaps and internal angles with jointing


21/33


compound and cover with continuous lengths of paper tape, fully bedded.

Protection of edges/ corners: Reinforce external angles, stop ends, etc.with specified edge/ angle bead.

Finishing: Apply jointing compound. Feather out each application beyondprevious application to give a flush, smooth, seamless surface.

Nail/ screw depressions: Fill with jointing compound to give a flush surface.

Minor imperfections: Lightly sand jointing and spotting to remove any minorimperfections.

SKIM COAT PLASTER FINISH

Manufacturer:British Gypsumor equivalent.

Thickness: 2 - 3 mm.

Joints: Fill and tape except where coincident with metal beads.

Finishing: Trowel/ float to a tight, matt, smooth surface with no hollows,abrupt changes of level or trowel marks.

INSTALLING BEADS/ STOPS

Cutting: Neatly using mitres at return angles.

Fixing: Securely using longest possible lengths, plumb, square and true toline and level, ensuring full contact of wings with background.

Finishing: After joint compounds/ plasters have been applied, removesurplus material while still wet from surfaces of beads which are exposed toview.

1.04 450 Doors Refer to 400 Series Drawings

New Boardroom DoorDouble leaf solid timber doors with vision panel finish to be white spray paint factoryfinish, metal frame to match partition system. Ironmongery tbc.

New Media Room Door926mm single leaf solid timber doors with vision panel finish to be white spray paintfactory finish, metal frame to match partition system. Ironmongery tbc.

Comms Room Door (East Riser Side)Existing Comms Room door to be reused & re-hung in new position, frame suitexisting.

New Store Room DoorsFR30 926mm single leaf solid timber doors, finish to be white spray paint factoryfinish, metal frame to match partition system. Ironmongery tbc.

Typical Meeting / Quiet / 1to1 Room DoorsExisting frameless glazed doors to be reused


PRELIMINARY INFORMATION/ REQUIREMENTS

EVIDENCE OF PERFORMANCE


22/33


Certification: Provide independently certified evidence that all incorporatedcomponents comply with specified performance requirements, particularlyBDGworkfutures environmental requirements outline in the preliminaryintroduction.

FIRE RESISTING DOORS/ DOORSETS/ ASSEMBLIES

Certification: Provide evidence, in the form of a product conformitycertificate, test report or engineering assessment, that each door/ doorset/assembly supplied will comply with the specified requirements for fireresistance if tested to BS 476-22, BS EN 1634-1 or BS EN 1634-3. Suchcertification must cover door and frame materials, glass and glazingmaterials and their installation, essential and ancillary ironmongery, hingesand seals.

SITE DIMENSIONS

Procedure: Before starting work on designated items take site dimensions,record on shop drawings and use to ensure accurate fabrication.Contractor will be responsible for co-ordinating with all site interfaces anddimensional requirements.

CONTROL SAMPLES

Procedure:- Finalise component details.- Fabricate one of each of the following designated items as part of thequantity required for the project.FRAMEDOOR SECTON to be representative of edges, make-up and visualappearance including grain type, direction and colour.- Obtain approval of appearance and quality before proceeding withmanufacturer of the remaining quantity.

COMPONENTS

SOLID CORE DOOR MANUFACTURERS: Doors shall be manufacturedby:

F R Shadbolt & Sons LtdThe ViaductNorth Circular RoadLondon E4 8PZ

or

Leaderflush+Shapland Ltd.,PO Box No.5404,Nottingham, NG16 4BUTel: 01531 650027;Fax: 01531 650028

or

Similar Approved

CORES:Construction:- solid blockboard of entirely softwood construction using European red orwhite wood or Canadian Lumber.

Standard softwood laid up vertically or,- shall be capable of meeting the performance requirements of thisspecification.


23/33


CORE FACINGS- For veneered doors: Hardwood plywood to BS 6566, thickness 4 mm(min) with outer skin running vertically or- MDF to BS 1142 (for internal doors only) or- For fire doors (of more than one hour's resistance only): Mineral based

materials as clause 175.

FACING VENEER LAYOUT:All doors to have identical veneer layout on door face. Grain to run vertically

and be even to allow for fully spray painted finish.

LIPPINGS shall:- be hardwood to all edges.- be hardwood to top and long edges- be tongued, continuously glued.

- be of a specifies suitable for door facing.

SOFT WOOD FLUSH DOORS

Manufacturer: See above- Facings (to match above): Soft wood ready to take spray paint finish.

Lippings: Soft-wood unless fire resisting construction.

Preservative treatment: Not required.

Finish as delivered: To approved control sample.

Ironmongery: Anodised aluminium see ironmongery.

Pull handles: Anodised aluminium

Lever/lock sets etc: Brushed stainless Steel

- Size: Refer to drawings listed.- Material/ Finish: Brushed stainless Steel- Additional ironmongery/ accessories: Anodised aluminium

SOFT WOOD DOOR FRAMESManufacturer: See Above.Wood species: Temperate soft wood species.

Preservative treatment: Not required

Finish as delivered: To match doors.

Perimeter seals: None

Fixing: TBA by manufacturer/contractor.

FR HARD WOOD DOOR FRAMESManufacturer: See Above.Wood species: Temperate hard wood species.

Preservative treatment: Not required

Finish as delivered: To match doors. Perimeter seals: Intumescent and cold smoke seals where required to

conform to fire rating requirements.

Fixing: TBA by manufacturer/contractor.

PROTECTION OF COMPONENTS

General: Do not deliver to site components that cannot be installedimmediately or placed in clean, dry, floored and covered storage.

Stored components: Stacked on level bearers, separated with spacers toprevent damage by and to projecting ironmongery, beads, etc.

PRIMING/ SEALING

Timber surfaces inaccessible after installation: Primed or sealed asspecified before fixing components.


24/33


CORROSION PROTECTION

Surfaces to be protected: All exterior door componentry.

Protective coating: Two coats of bitumen solution to BS 6949 or anapproved mastic impregnated tape.- Timing of application: Before fixing components.

FIXING DOORSETS Timing: After rooms have been made weathertight and the work of wet

trades is finished and dried out.

BUILDING IN

General: Not permitted unless indicated on drawings.

DAMP PROOF COURSES ASSOCIATED WITH BUILT IN WOODFRAMES

Method of fixing: To backs of frames using galvanized clout nails.

DAMP PROOF COURSES IN PREPARED OPENINGS

Location: Correctly positioned in relation to door frames. Do not displaceduring fixing operations.

FIXING OF WOOD FRAMES

Spacing of fixings (frames not predrilled): 150 mm from ends of each jamband at 600 mm maximum centres.

FIXING OF LOOSE THRESHOLDS

Spacing of fixings: 150 mm from each end and at 600 mm maximumcentres.

FIRE RESISTING AND/ OR SMOKE CONTROL DOORS/ DOORSETS

Installation: By a firm currently registered under a third party accredited fire

door installer scheme in accordance with instructions supplied with theproduct conformity certificate, test report or engineering assessment.

FIRE RESISTING AND/ OR SMOKE CONTROL DOORS/ DOORSETS

Gaps between frames and supporting construction: Filled as necessary inaccordance with requirements for certification and/ or door/ doorsetmanufacturer's instructions.

SEALANT JOINTS

Sealant:- Manufacturer: To be advised by manufacturer.

Product reference: To be advised by manufacturer.- Colour: Provide grey to be approved on site where required.-

Application: To manufacturers recommendations. Triangular filletsfinished to a flat or slightly convex profile.

FIXING IRONMONGERY GENERALLY

Fasteners: Supplied by ironmongery manufacturer.- Finish/ Corrosion resistance: To match ironmongery.

Holes for components: No larger than required for satisfactory fit/operation.

Adjacent surfaces: Undamaged.

Moving parts: Adjusted, lubricated and functioning correctly at completion.

FIXING IRONMONGERY TO FIRE RESISTING DOOR ASSEMBLIES

General: All items fixed in accordance with door leaf manufacturer'srecommendations ensuring that integrity of the assembly, as establishedby testing, is not compromised.


25/33


Holes for through fixings and components: Accurately cut.- Clearances: Not more than 8 mm unless protected by intumescent pasteor similar.

Lock/ Latch cases for FD60 doors: Coated with intumescent paint or pastebefore installation.

LOCATION OF HINGES Primary hinges: Where not specified otherwise, positioned with centre

lines 250 mm from top and bottom of door leaf.

Third hinge: Where specified, positioned Central unless door weightprohibits in which case agree location with design team.

Hinges for fire resisting doors: Positioned in accordance with door leafmanufacturer's recommendations.

INSTALLATION OF EMERGENCY EXIT DEVICES

Standard: Unless specified otherwise, install panic bolts/ latches inaccordance with BS EN 1125.

Refer also to Ironmongery Section.

1.05 Ironmongery (to be scheduled by contractor)

Generally anodised aluminium and to include:

1.5 or 2 pair hinges to all door leaves.

Push plates

Pull handles

Lever handles

Door closers

Flush bolts

Roses

Escutcheons Suiting profile to be advised

Signage to match as required

Access control with associated security ironmongery to be advised byclient.

Note: All new ironmongery to match existing where possible.

GENERAL REQUIREMENTSRequirements and locations of ironmongery are scheduled on drawings. Supplier tofully schedule ironmongery.

IRONMONGERY RANGES:Ironmongery to be anodised aluminium from the following supplier or similarapproved:

Quality of ironmongery to suit below manufacturer.

Allgood plc297 Euston RoadLondon NW1 3AQTel: 020 7387 9951

SAMPLES: Provide a sample board for approval, containing selected items ofironmongery and showing methods of fixing. Keep on site in an approved locationfor the duration of the contract.

IRONMONGERY FOR DOORS: Provide ironmongery for each door in separate,


26/33


clearly labelled packs.

IRONMONGERY FOR FIRE DOORS: Unless specified otherwise, selectironmongery to comply with the recommendations of the Association of Builders'Hardware Manufacturers Code of practice 'Hardware essential to the optimumperformance of fire resisting doorsets'.

HANGING DEVICES

HINGES:To BS 7352 and marked accordingly. Unless specified otherwise, select strengthclass to suit door weight, duty, number of hinges and other factors as recommendedin BS 7352, Appendix C.Corrosion protection: Unless specified otherwise:CP 24 for internal use

NUMBER OF HINGES: Provide tow pivot hinges to each leaf unless specifiedotherwise. Three butt hinges to timber doors where appropriate.

OVERHEAD CLOSERS FOR FIRE DOORS (where required): In addition to thegeneral requirements for closers, overhead closers for fire resisting doors must:Be types included in successful tests to BS 476:Part 22 of door assemblies similarto those for which the closers are proposed. Submit evidence of testing by anapproved laboratory.Be fixed on the opening face of the door unless specified otherwise.Have no mechanical hold open facility.Close positively against smoke seals where fitted.Have arms of iron, steel or other metal with melting point not less than 800 degC.

SWING FREE OVERHEAD CLOSERS must close the door when activated by thealarm system and/or failure of the power supply. A test switch must be located in aconvenient position adjacent to the door.

SURFACE MOUNTED CLOSERS to be mounted on opening face of door exceptwhere they will be obstructed or where specified otherwise.

DOOR SELECTORS must be fitted to all single swing double doors with rebatedmeeting stiles fitted with self closers. Provide types that:Require the minimum amount of material to be removed from the door and frameAre suitable for the size of rebatesAre from the same range as the closers and are of matching finish and colour.

SECURING

LATCHES:

To BS 5872Latch springs must be strong enough to prevent unsprung lever handles drooping.

LOCKS/LATCHES FOR FIRE RESISTING DOORS:Must not compromise the fire performance of the door and must be approved for thepurpose by the door leaf manufacturer.Components critical to the retention of the door in a closed position must not have amelting point lower than 800 degC.

ESCAPE LOCKS: Locks specified for security purposes on escape routes must befitted with a means of withdrawing the bolt without use of a key.

BOLTS GENERALLY: Unless specified otherwise, provide bolts:

To match door furniture and sized to suit height, weight and function of door.To secure the first closing leaf of double doors.


27/33


PRIVACY BOLTS must incorporate an external emergency release facility.

FURNITURE

PULL HANDLES: To Method of Building Performance Specification MOB H3 PS,

July 1989, 'Hardware for Internal Doorsets'.

ESCUTCHEONS: Provide separate escutcheons to keyholes where not part of aback plate.

ESCUTCHEONS: Provide pull type escutcheons to cylinder locks where no otherpull handle is specified to be fitted.

1.06 500 Ceilings

Existing ceiling tiles to be retained, cleaned and made good where required.

New plasterboard bulkhead to be formed over lockers / central resource librarydetails to be confirmed on site

SETTING OUT- General:

Set out accurately, continuous, even, and jointed at regular intervals. Providelevel soffits free from undulations, lipping and distortions in grid members.

- Infill and access units, integrated services: Fit correctly and aligned.- Edge/perimeter infill units size (minimum): Half standard width or length.- Grid: Position to suit infill unit sizes. Allow for permitted deviations from

nominal sizes.

- Infill joints and exposed suspension members: Straight, aligned and parallelto walls. Where building elements and features to which the ceiling systemsrelate are not square, straight or level, give notice.

GENERALLY/PREPARATION

SUSPENDED CEILINGS GENERALLY: Unless specified otherwise,comply with the relevant recommendations and performancerequirements of BS 8290 for the selection and assembly ofcomponents and materials.

COMPLIANCE WITH PERFORMANCE REQUIREMENTS:

- Provide UKAS/NAMAS accredited laboratory test/assessmentreport(s).- All materials, components and details used must be in accordancewith the test/assessment report(s). If discrepancies arise, seekinstructions.

CONTROL SAMPLE(S): Complete area(s) of the finished work inapproved location(s) as follows, and obtain approval of appearancebefore proceeding:Small Lecture Room.

SAMPLE(S): Before placing orders submit representative sample(s)of Soffit, tile and trim abutments.Ensure that delivered materials match samples.


28/33


ENVIRONMENTAL CONDITIONS:- Areas for storage and installation must be clean, dry, well ventilatedand free from excessive and/or rapid variations of temperature andhumidity.- Do not install membrane material until the building is weathertightand wet trades have finished their work. Before, during and after

installing, ensure that temperature and humidity are maintained atlevels similar to those which will prevail after building is occupied.- Notwithstanding the above, delivery of materials and installation ofthe suspended ceiling will be taken as joint acceptance by the MainContractor and Ceiling Contractor of the suitability of theenvironmental conditions.

CONDITIONING: Before fixing store materials on site for at least 48hours in conditions similar to those which will prevail after thebuilding is occupied. Ensure free circulation of air to all surfaces.

COORDINATION WITH OTHERS: The Ceiling Contractor mustliaise with the Main Contractor and other contractors to ensure:

- Related work within the void (services, partitions, fire barriers, firestopping, painting, etc.) is at a suitable stage of completion to enableceiling installation to proceed without damage or disfigurement to theceiling system.- Fixtures around which the ceiling is to be installed are completedand that services, fire barriers, etc. are in the correct position relativeto the ceiling grid.- Hangers do not press against services, etc. and are installedvertically. Where obstructions prevent vertical installation, bracehangers against lateral movement or provide rigid bridging structuresacross obstructions.- Services integrated within the ceiling membrane are positionedaccurately, supported adequately and aligned and levelled in relation

to the membrane and suspension system.

INSTALLATION

WORKMANSHIP GENERALLY:- Handle, store and fix suspended ceiling materials and accessoriesin accordance with manufacturers' recommendations, BS 8290:Part3 and design/performance requirements.- Set out accurately to give level soffits free from undulations, lippingand distortions in grid members.- Fix securely with additional bracing and stiffening as necessary atupstands, access hatches, partition heads, etc. to give a stablesystem resistant to wind induced uplift and other specified design

loads and pressures.- Do not use cartridge or powder activated methods for top fixings orrivets for bottom fixings of hangers.

PROTECTION:- No part of the suspension system must be subjected to loads forwhich it is not designed, including lateral loads from ladders, towerscaffolds, etc.- Membrane materials must be handled carefully, kept clean andremoved and replaced correctly using special tools and clean gloves,etc. as appropriate.

SETTING OUT: Unless shown otherwise, set out ceilings so that:- Edges of tiles/panels are never less than half in width or length.Position grid to suit tile/panel size(s), allowing for permitted


29/33


deviations from nominal size(s).- All lines and joints are straight and parallel to walls unless specifiedotherwise. Where surrounding walls or other building elements andfeatures to which the suspended ceilings relate are not square,straight or level, obtain instructions on setting out.

FIXING BOARDS TO CONCEALED GRIDS:- Fix and join boards using methods, materials and accessoriesrecommended by the board manufacturer.- Cut boards neatly and accurately. Do not use damaged boards.- Screw boards securely and firmly to grid members atrecommended centres and edge distances, to give a flat surface freefrom bowing and lipping. Set heads of screws below surface ofboards and fill flush with surface.- Where not shown otherwise, provide movement joints asappropriate for the area of ceiling and/or to coincide with movementjoints in surrounding structure.- Stagger joints of boards applied in two or more layers. Ensure thatedges and ends of each board are fully supported and screwed to

grid members.

WIRE HANGERS:- Straighten before use and install vertically without bends or kinks.Do not allow hangers to press against any fittings within the void.- Tie securely at top and bottom with tight bends to loops to preventany vertical movement.

TIMBER EDGE BATTENS:Material: Planed softwood to BS EN 942, class J10.Moisture content: 15% +/- 2 at time of fixing.Finished size: 18 x 32mmFinish (to be applied before ceiling grid is installed): white emulsion

finish to match margins.Fix at not more than 450 mm centres.

JOINTING OF PERIMETER TRIMS to be carried out neatly andaccurately without lipping or twisting using:-Mitred joints at all external and internal corners.-The longest lengths of trim available from manufacturer to keepintermediate butt joints to a minimum.

OPENINGS IN MEMBRANE MATERIALS to be formed accuratelyand neatly to suit sizes and edge details of fittings, using methodsrecommended by the manufacturer and without causing damage ordistortion.

SUPPORT OF SMALL FITTINGS VIA MEMBRANE MATERIALS:-Fittings must be adequately supported without causing damage ordistortion to the membrane, by the use of rigid backing boards orother suitable means.-Surface spread of flame rating of additional supporting materialmust match that of the ceiling membrane material.

INSULATION:- Fit accurately and firmly with no gaps so that specified performancelevels are achieved.-Insulation within individual tiles, trays, etc. must be fitted closely andsecured to prevent displacement when tiles are installed or

subsequently lifted. Reseal any cut dustproof sleeving.-Lay out insulation over the membrane in the widest practical widths


30/33


to suit spacings of grid members, with closely butted joints.-Do not cover electrical cables (unless they have been sizedaccordingly). Cut insulation carefully around electrical fittings, etc.-On sloping and vertical areas of ceiling, fastenings must be used toprevent displacement.

FIRE STOPPING TO FIRE RESISTING SUSPENDED CEILINGS:Seal any gaps at junctions of ceiling with perimeter abutments,service penetrations, etc. using tightly packed mineral wool orapproved intumescent sealant to prevent penetration of smoke andflame.

CAVITY FIRE BARRIERS:-Fire resistance to BS 476:Part 20: Integrity/insulation (minutes): 30Material: Encapsulated mineral woolFixing: Mechanical-Refer to drawings for location.-Fix securely at perimeters and joints, ensuring permanent stabilityand continuity with no gaps, to provide a complete barrier to smoke

and flame.-Fixing to the ceiling must not impair free expansion of grid system orotherwise affect fire resisting performance.

SOUND BARRIERS:-Material: Encapsulated mineral wool-Align accurately with partition heads. Fit tightly and fix securely atperimeters and joints, using methods recommended by the barriermanufacturer, including steel support sections as appropriate.Ensure permanent stability and continuity with no gaps.-Seal any gaps at junctions of sound barriers with partition heads,suspended ceiling, structural soffit, walls, ducts, pipes, etc. usingmineral wool or suitable sealants.

AIR PLENUM BARRIERS:-Material: rigid or semirigid non porous sheets with smoothnondusting surfaces having the same fire spread rating as thatrequired for membrane materials exposed within the void.-Fix securely at perimeters and joints, using methods recommendedby the barrier manufacturer to ensure permanent stability. All edgesand joints to be effectively sealed to prevent air leakages.

ELECTRICAL CONTINUITY AND EARTHBONDING:-All substantial conductive parts of the suspended ceiling systemincluding integrated electrical equipment and fittings, are to beelectrically continuous and fully earth bonded in accordance with BS

7671 (The IEE Wiring Regulations).-Ensure that earth bonding is completed as soon as possible aftercompletion of each independent area of suspension system.-After completion of the ceiling installation, associated services andfittings, arrange for tests to demonstrate that the ceiling is electricallycontinuous and fully earth bonded in accordance with BS 8290:Part3.-Notify the CA to enable the testing to be witnessed. Submit a testreport to the CA.

INSTRUCTIONS AND TOOLS: Provide the Main Contractor withduplicate sets of user instructions and access tools recommended bythe suspended ceiling/access panel manufacturer. One for the use of

contractors requiring access to the void and the other for handingover to the CA at Practical Completion.


31/33


ACCESS TOOLS: Provide the Main Contractor with two sets of:Tools as required.One set to be for the use of contractors requiring access to the voidand the other for handing over to the CA at Practical Completion.

USER INSTRUCTIONS: Provide the Main Contractor with twocopies; one for the use of contractors requiring access to the voidand the other for handing over to the CA at Practical Completion.The contents of the instructions to include:-Correct methods for lifting and replacing tiles, panels, etc.-Cleaning methods and materials.-Decoration of tiles and touching up where appropriate.-Limitations placed on subsequent alterations and maintenanceprocedures to fire resisting suspended ceilings to ensure that theirperformance is not impaired.

SPARES: Provide the following and hand over to the Employer atPractical Completion:

5% total area of tiles.

POST INSTALLATION VISIT: After completion of services andassociated work by others:-Thoroughly inspect the ceiling installation for defects. Prepare aschedule of outstanding defects and submit a copy to the CA.-Check that tiles, integrated luminaires, diffusers, etc. are correctlyfitted, aligned and clean.

1.07 550 Specialist Joinery

Touchdown benchNew touchdown bench 40mm thick white laminated mdf bench supported on minimalsteel wall bracket. height to be 1050mm ffl (DDA requirements to be confirmed)

Copy / Print area storageNew copy / print area storage & worktop. Worktop to be post formed, 40mm thick,formica graphite grafix f7 515.Storage under to be standard 600x600mm white laminate cupboard units with whitelaminate doors & minimal s/s steel 'd' handle.

Booth Seatingnew booth seating either side of central core. seat back & pad to be upholstered incamira fabric, xtreme plus, blizzard ys081 (sample to provided for approval)Seat base to be black laminated mdf.See scheme design presentation for supporting illustrations.

Vend Area WorksNew vend area worktop. Worktop to be post formed, 40mm thick, formica graphitegrafix f7 515.

Remove integral fridge from each vend area and replace with dishwasher and allowfor associated services (2 No. dishwashers in total)

Remove 1 No. Base cupboard unit from each vend area, make good as required andinstall tall larder fridge in each area (2 No. fridges in total)

Install 2 No. high level cupboards in each vend area, details to match existing


32/33


cupboard units. See sketch proposal for layout.

The contractors attention is drawn to BDGworkfutures policy on timber sourcingcontained in the Preliminaries.

The contractor is to be responsible for detail design to all joinery items and providerods for approval prior to manufacture:

To be read with 400 drawing series & scheme design document

Refer to above drawings for all finishes references.

110 FABRICATION

Standard: BS 1186-2.

Sections: Accurate in profile and length, and free from twist and bowing.Form out of solid unless shown otherwise.- Machined surfaces: Smooth and free from tearing, wooliness, chip

bruising and other machining defects. Joints: Tight and close fitting.

Assembled components: Rigid. Free from distortion.

Screws: Provide pilot holes.- Screws of 8 gauge or more and screws into hardwood: Provide clearanceholes.- Countersink screws: Sink heads at least 2 mm below timber surfacesvisible in completed work.

120 CROSS SECTION DIMENSIONS OF TIMBER

Dimensions on drawings are finished sizes.

Maximum permitted deviations from finished sizes:

- Softwood sections: To BS EN 1313-1:-Clause 6 for sawn sections.Clause NA.2 for further processed sections.- Hardwood sections: To BS EN 1313-2:-Clause 6 for sawn sections.Clause NA.3 for further processed sections.

130 PRESERVATIVE TREATED TIMBER

Cutting and machining: Maximise before treatment.

Extensively processed timber: Retreat timber sawn lengthways,thicknesses, planed, ploughed, etc.

Surfaces exposed by minor cutting and/or drilling: Treat with two floodcoats of a solution recommended by main treatment solution manufacturer.

140 MOISTURE CONTENT

Timber and wood based products: Maintain within range specified for thecomponent during manufacture and storage.

250 FINISHING

Joinery surfaces: Smooth, even and suitable to receive finishes.- Arrises: Eased unless shown otherwise on drawings.

End grain in external components: Seal with primer or sealer as sectionM60 and allow to dry before assembly.

1.08 600 Wall Finishes / Brand Graphics / Manifestation


33/33

Perimeter walls/core and columns to have local repairs to make good, colourto match existing.

Wall finish ref: 1 (Entrance Graphic)Large 'Electoral Commission' logo - colour vinyl lettering applied to partition wall -

approx size 1500x750mm (final details tbc)

Wall finish ref: 2 (Boardroom / central core meeting rooms fronts)Dusted crystal applied vinyl manifestation to glazing - simple horizontal bands with1 no. colour 'electoral commission' logo (see scheme design document for details)

Wall finish ref: 3 (Meeting / quiet / 1to1 rooms)Dusted crystal applied vinyl manifestation to glazing - simple horizontal bands withcolour band of EC iconography (see scheme design document for details)

Wall finish ref: 4 (Central core meeting rooms rear glazed section)Full height transparent colour film applied to glazing. normex, d-cx, colour 39 (seescheme design document for details)

Wall finish ref: 5 (Copy / Print Areas)Full height, large format graphic, vinyl wall covering - image to be confirmed

Wall finish ref: 6 (Project Area writable wall)Full height Tektura wall talkers, writable vinyl wall covering

Wall finish ref: 7 (Booth Seating Area)Rear walls to booth seating - to be paint finished, colour to be confirmed.

Wall finish ref: 8 (Breakout Area Glazing)Full height, large format graphic, transparent vinyl film to glazing - image to beconfirmed

General note: unless stated otherwise, all walls / columns / bulkheads are to bepaint finished white - specification to match existing.


1.09 725 WCs

As existing no works required

1.10 740 Security

To be advised by the client.

1.11 800 Signage

Room numbering and directional signage to be advised by the client.

For manifestation detailsRefer to Drwg Nos EC/07/GA/600/01

021-ec scope of works

Documents