Oakdale Primary School Expansion Project

Transcription

1 FOR TENDER Page 1 of 200

2 Table of Contents Concrete foundation systems Board ceiling and soffit systems Demountable suspended ceiling systems Acrylic and resin-bound aggregate paving systems Unit paving systems Roof light, roof window and roof ventilator systems Flat roof covering systems Profiled sheet roof covering systems Cementitious screed systems Resilient and textile adhesive fixed floor covering systems Wood and composite unit flooring systems Floor damp-proofing systems Panel cubicle systems Masonry wall systems Framed partition systems Fencing systems Pedestrian barrier and guarding systems Door, shutter and hatch systems Window systems Curtain walling systems Weatherboarding systems Lining and casing systems Rigid sheet fine lining and panelling systems Door and gate hardware systems Glazing systems Wall sheathing systems Metal sheet flashing and weathering systems General fittings, furnishings and equipment (FF&E) systems Minor joinery systems Office fittings, furnishings and equipment (FF&E) systems Classroom fittings, furnishings and equipment (FF&E) systems External public realm and site furniture systems Sanitary appliance systems Shelter systems Painting and clear finishing systems Shelters Carpets and underlays Floor and stair trim Paving units Resilient floor coverings Page 2 of 200

3 Blinds and shading devices Bolting, latching and locking hardware Damp proof courses Doors and hatches Hinges and hanging hardware Lightweight cladding and roofing panels Operating hardware Wall ties, restraints and masonry supports Window ancillaries Windows and roof opening products Access boxes, covers and frames Display and presentation fittings and equipment General fittings, furnishings and equipment products Mirrors and noticeboards Sanitary fittings and fixtures Sanitary accessories Safety equipment Shelving, storage and partition panel units Site-applied finishes Street and site furniture Worktops Access panels Mineral-based boards and panels Plastics-based boards and panels Batt, mat, quilt and panel insulation Wood-based boards and panels Adhesives Nails and screws Aggregates Bedding and underlay compounds Mortars and Grouts Resins Sealants and glazing compounds Timber sections Glazing sheets Membranes, liners, flexible sheets and fabrics Metal Sheets Plastics based rigid sheets Frames Legs, pedestals, grids and hangers Exterior trim Flashings and cover strips Gaskets, weatherstrips and baffles Page 3 of 200

4 Movement Joints Tapes, strips and profile fillers Wall and ceiling trim Infill units and sound attenuators Masonry units Wood Blocks Reinforcement Above ground rainwater drainage systems Above ground wastewater drainage systems Below ground gravity drainage systems Permanent access and safety equipment systems Access chambers, collectors and control units Gutters Drainage and rainwater pipelines Pipeline accessories Valves Notices, identification and labels Page 4 of 200

5 Specification Page 5 of 200

6 Concrete foundation systems System outline 135 In situ unreinforced concrete foundation system for cast in products For fencing System performance: As civil engineer's specification Blinding: As civil engineer's specification Concrete: As civil engineer's specification Cast in accessories: As civil engineer's specification Execution: /610 Execution of concrete foundations. Execution 610 Execution of concrete foundations Used by: /135 In situ unreinforced concrete foundation system for cast in products For fencing. Formation to receive concrete: - Requirement: Free from loose soil, topsoil, organic material, rubbish and standing water. Standard: To BS EN Trench fill foundations: Place concrete immediately after inspection and no more than four hours after exposing the formation. Page 6 of Concrete foundation systems

7 Board ceiling and soffit systems System outline 110 Board suspended ceiling system type 1 System manufacturer: British Gypsum System reference: CasoLine MF suspended ceiling system Suspension system: - Hanger type: Gypframe MF8 strap hangers. Gypframe GA1 steel angles. Gypframe GAH1 acoustic hangers Linings: 1 x 12.5 mm Gyproc SoundBloc Access Units: /310 Access panels Finishing: As Room Data Sheets Primer/ Sealer: System accessories: As clause /110 Board suspended ceiling system type Transition strip to demountable ceilings 100mm Isover acoustic insulation and /310 Access panels. Execution: /640 Installing boarded ceilings and soffits. System completion: /830 Operation and maintenance manual. 110 Board suspended ceiling system type 2 System manufacturer: Armstrong Ceilings Ltd System reference: Drywall Grid And Trim For Gypsum Board Arrangement: - Centres between cross tees: Submit proposals. Suspension: Submit proposals. Grid: Standard. Visible trims: - Perimeter: BPT3213G Axiom Profiles, plasterboard trim. - Transitional, flush: BPT3210G Axiom Transitions, plasterboard for Vector tiles. - Colour: Global White Accessories: To suit installation Access Units: /310 Access panels Execution: /640 Installing boarded ceilings and soffits. System completion: /830 Operation and maintenance manual. 110 Board suspended ceiling system type 3 System manufacturer: British Gypsum System reference: CasoLine MF suspended ceiling system Suspension system: Page 7 of Board ceiling and soffit systems

8 - Hanger type: Gypframe MF8 strap hangers. Gypframe GA1 steel angles. Gypframe GAH1 acoustic hangers Linings: 1 x 12.5 mm Gyproc SoundBloc MR (Moisture Resistant) Access Units: /310 Access panels Finishing: As Room Data Sheets Primer/ Sealer: System accessories: 100mm Isover acoustic insulation and /310 Access panels. Execution: /640 Installing boarded ceilings and soffits. System completion: /830 Operation and maintenance manual. 170 Soffit lining and beam casing system To Block A - Soffits of Nursery Play Canopy & Main Entrance Canopy System manufacturer: Marley Eternit Ltd System reference: /355 Fibre reinforced cement board Thickness: 12 mm. Panel size: Refer to drawings. Fixing: As manufacturer's recommendations Joints: As details Support system: Timber battens, 38 x 50 mm and 38 x 100 mm. Accessories: Colour matched natura screws 5.5 x 35 mm; Luko solution to all cut edges; Timber profile cover strips (Black). Support: - Framing: Treated softwood sections. Execution: /660 Installing additional supports and /680 Installing framing generally. Execution 640 Installing boarded ceilings and soffits Shared by: /110 Board suspended ceiling system type 1; type 2 and type 3. Standard: To BS EN Sequence: Fix boards to dry-lined walls and partitions before installing ceilings. Orientation of boards: Fix with long edges at right angles to supports. Stagger ends in adjacent rows. Two layer boarding: Stagger joints between layers. Cut boards: Cuts to be neat and accurate. Fixings: Dry wall screws at 230 mm. Reduce to 150 mm at board ends and around room perimeter. Board edges: All edges to be fully supported. Set heads of screws [fasteners] below board surface and fill flush with surface prior to decoration. Page 8 of Board ceiling and soffit systems

9 Movement joints: Provide as appropriate for the area of ceiling system and/ or to coincide with movement joints in surrounding structure. Openings: Cuts to be neat and accurate, to suit sizes and edge details of fittings. Do not distort ceiling system. 660 Installing additional supports Used by: /170 Soffit lining and beam casing system To Block A - Soffits of Nursery Play Canopy & Main Entrance Canopy. Additional framing: At board edges and lining perimeters, as recommended by board manufacturer to suit type and performance of lining. For all fixtures, fittings and service outlets, mark framing positions clearly and accurately on linings. Accurately position all additional framing and fix securely. 680 Installing framing generally Used by: /170 Soffit lining and beam casing system To Block A - Soffits of Nursery Play Canopy & Main Entrance Canopy. Soffit: Timber joists. Frame centres (maximum): 600mm max. Bracket centres (maximum): 600 mm max. System completion 830 Operation and maintenance manual Shared by: /110 Board suspended ceiling system type 1; type 2 and type 3. Contents: - Cleaning: Cleaning methods and materials. - Decoration: Recommendations for redecoration. - Fire rating: Ceiling systems intended for fire protection - limitations placed on subsequent alterations and maintenance procedures, to ensure that their fire performance is not impaired. - Point loads: Maximum number, position and value of point loads that can be applied to ceiling system after installation. Page 9 of Board ceiling and soffit systems

10 Demountable suspended ceiling systems System outline 190 Unit (modular) suspended ceiling system type 1 System manufacturer: Armstrong Ceilings Ltd Ceiling support: /335 Demountable suspended ceiling grid. Support fasteners: To suit structural soffit as manufacturer's instructions. Ceiling units: /340 Open cell units - border to Block N teaching spaces; /330 Mineral fibre infill units type Class A Acoustic Mineral Tile; and. Barriers in ceiling void: - Fire barriers: /450 Wired mineral wool batt flexible cavity barriers. - Acoustic barriers: /450 Wired mineral wool batt flexible cavity barriers. System accessories: Include for all accessories to allow for the complete installation of the ceiling as the manufacturers instructions. Manufacturer's edge sealant should be used to reseal all cut edges (but should not be used on the surface of the tile). Plaster board bulkheads and margins as indicated on reflected ceiling plans. Execution: /615 Installing demountable suspended ceilings generally; /700 Installing upstands and bulkheads to demountable suspended ceilings; /695 Installing air plenum barriers above demountable suspended ceilings; /625 Protection of demountable suspended ceilings; /685 Installing cavity fire barriers above demountable suspended ceilings; /620 Setting out demountable suspended ceilings; /690 Installing sound barriers above demountable suspended ceilings; /710 Installing integrated services in demountable suspended ceilings; and /675 Installing insulation above demountable suspended ceilings. System completion: /830 Operation and maintenance manual and /840 Spares for demountable suspended ceilings. 190 Unit (modular) suspended ceiling system type 2 System performance: System manufacturer: Armstrong Ceilings Ltd Ceiling support: /335 Demountable suspended ceiling grid. Support fasteners: To suit structural soffit as manufacturers instructions. Ceiling units: /330 Mineral fibre infill units type Class C Acoustic Mineral Tile. Barriers in ceiling void: - Fire barriers: /450 Wired mineral wool batt flexible cavity barriers. - Acoustic barriers: /450 Wired mineral wool batt flexible cavity barriers. System accessories: Include for all accessories to allow for the complete installation of the ceiling as the manufacturers instructions. Ecophon edge sealant should be used to reseal all cut edges (but should not be used on the Page 10 of Demountable suspended ceiling systems

11 surface of the tile). Plaster board bulkheads and margins as indicated on reflected ceiling plans. Execution: /615 Installing demountable suspended ceilings generally; /700 Installing upstands and bulkheads to demountable suspended ceilings; /695 Installing air plenum barriers above demountable suspended ceilings; /625 Protection of demountable suspended ceilings; /685 Installing cavity fire barriers above demountable suspended ceilings; /620 Setting out demountable suspended ceilings; /690 Installing sound barriers above demountable suspended ceilings; /710 Installing integrated services in demountable suspended ceilings; and /675 Installing insulation above demountable suspended ceilings. System completion: /830 Operation and maintenance manual and /840 Spares for demountable suspended ceilings. 190 Unit (modular) suspended ceiling system type 3 System manufacturer: Armstrong Ceilings Ltd Ceiling support: /335 Demountable suspended ceiling grid. Support fasteners: To suit structural soffit as manufacturers instructions. Ceiling units: /330 Mineral fibre infill units type Class C Acoustic Mineral Plank. Barriers in ceiling void: - Fire barriers: /450 Wired mineral wool batt flexible cavity barriers. - Acoustic barriers: /450 Wired mineral wool batt flexible cavity barriers. System accessories: Include for all accessories to allow for the complete installation of the ceiling as the manufacturers instructions. Ecophon edge sealant should be used to reseal all cut edges (but should not be used on the surface of the tile). Plaster board bulkheads and margins as indicated on reflected ceiling plans. Execution: /615 Installing demountable suspended ceilings generally; /700 Installing upstands and bulkheads to demountable suspended ceilings; /695 Installing air plenum barriers above demountable suspended ceilings; /625 Protection of demountable suspended ceilings; /685 Installing cavity fire barriers above demountable suspended ceilings; /620 Setting out demountable suspended ceilings; /690 Installing sound barriers above demountable suspended ceilings; /710 Installing integrated services in demountable suspended ceilings; and /675 Installing insulation above demountable suspended ceilings. System completion: /830 Operation and maintenance manual and /840 Spares for demountable suspended ceilings. 190 Unit (modular) suspended ceiling system type 4 System performance: /210 Demountable suspended ceiling design requirements. Performance suitable for sports hall use. System manufacturer: Armstrong Ceilings Ltd Ceiling support: /335 Demountable suspended ceiling grid. Support fasteners: To suit structural soffit as manufacturers instructions. Ceiling units: /330 Mineral fibre infill units type Class C Acoustic Mineral Tile. Barriers in ceiling void: - Fire barriers: /450 Wired mineral wool batt flexible cavity barriers. Page 11 of Demountable suspended ceiling systems

12 - Acoustic barriers: /450 Wired mineral wool batt flexible cavity barriers. System accessories: Include for all accessories to allow for the complete installation of the ceiling as the manufacturers instructions. Ecophon edge sealant should be used to reseal all cut edges (but should not be used on the surface of the tile). Plaster board bulkheads and margins as indicated on reflected ceiling plans. Execution: /615 Installing demountable suspended ceilings generally; /700 Installing upstands and bulkheads to demountable suspended ceilings; /695 Installing air plenum barriers above demountable suspended ceilings; /625 Protection of demountable suspended ceilings; /685 Installing cavity fire barriers above demountable suspended ceilings; /620 Setting out demountable suspended ceilings; /690 Installing sound barriers above demountable suspended ceilings; /710 Installing integrated services in demountable suspended ceilings; and /675 Installing insulation above demountable suspended ceilings. System completion: /830 Operation and maintenance manual and /840 Spares for demountable suspended ceilings. System performance 210 Demountable suspended ceiling design requirements Used by: /190 Unit (modular) suspended ceiling system type 4. Standard: To BS EN Access: Submit proposals. Materials, components and details: Use only the same as those tested and identified in assessment reports. Integrated services fittings: Supported independently of suspended ceiling grid. Execution 615 Installing demountable suspended ceilings generally Shared by: /190 Unit (modular) suspended ceiling system type 1; type 2; type 3 and type 4. Standard: To BS EN Height above finished floor level: As reflected ceiling plans. Stability: Where required, install additional bracing and stiffening to give a stable ceiling system resistant to design loads and pressures. Out of sequence working: Supply and fix initial tiles for early fixing of ceiling mounted services. Protective coverings: Remove at completion. 620 Setting out demountable suspended ceilings Shared by: /190 Unit (modular) suspended ceiling system type 1; type 2; type 3 and type 4. Appearance of completed ceiling: Over the whole of the surface exposed to the room below, a continuous and even surface, jointed (where applicable) at regular intervals. Building elements and features to which the ceiling systems relate: Give notice if not square, straight or level. Page 12 of Demountable suspended ceiling systems

13 Grid: Position to suit infill unit sizes. Allow for permitted deviations from nominal sizes of infill unit. Infill and access units, integrated services: Fit correctly and align. Edge or perimeter infill units size (minimum): Half standard width or length. Corner infill units size (minimum): Half standard width and length. Infill joints and exposed suspension members: Straight, aligned and parallel to walls. 625 Protection of demountable suspended ceilings Shared by: /190 Unit (modular) suspended ceiling system type 1; type 2; type 3 and type 4. Loading: Do not apply loads for which the suspension system is not designed. Ceiling materials: When necessary, remove and replace correctly using special tools and clean gloves, etc. as appropriate. 675 Installing insulation above demountable suspended ceilings Shared by: /190 Unit (modular) suspended ceiling system type 1; type 2; type 3 and type 4. Fitting: Fit accurately and firmly with butted joints and no gaps. Lay insulation in the widest practical widths to suit grid member spacings. Installing mineral wool quilt: Lay with close butted joints aligned end-to-end. Encase in fire retardant cotton scrim cloth Insulation within individual infill units: Fit closely. Secure to prevent displacement when infill units are installed or subsequently lifted. Reseal dustproof sleeving if cut. Sloping and vertical areas of ceiling system: Fasten insulation, to prevent displacement. Services: Do not cover electrical cables that have not been sized accordingly. Cut insulation carefully around electrical fittings, etc. Do not lay insulation over luminaires. 685 Installing cavity fire barriers above demountable suspended ceilings Shared by: /190 Unit (modular) suspended ceiling system type 1; type 2; type 3 and type 4. Maximum ceiling void dimension in any direction: 20 m. Position of barriers: On line of partition and maximum 20 m apart in any direction. Fixing: Secure barrier at head and base using proprietary angle support system. Fix angle support system to timber framework with No. 10 woodscrews at 450 mm centres. Fix barriers securely to channels or angles at abutments to building structure. Fixing at perimeters and joints: Secure, stable and continuous with no gaps to provide a complete barrier to smoke and flame. Joints: Form to preserve integrity in fire. Service penetrations: Cut barriers neatly to accommodate services. Fit fire resistant sleeves around flexible materials. Fill gaps around services to fire barrier manufacturer's recommendations to maintain barrier integrity. Independently support services passing through the barrier on both sides of the barrier so that no load is placed on the barrier in the event of a fire. Ceiling systems intended for fire protection: Do not impair fire resisting performance of ceiling system. Ceiling systems not intended for fire protection: Do not mechanically interlink barriers with ceiling system. Page 13 of Demountable suspended ceiling systems

14 690 Installing sound barriers above demountable suspended ceilings Shared by: /190 Unit (modular) suspended ceiling system type 1; type 2; type 3 and type 4. Setting out: Align accurately with partition heads. Fixing: Fix tightly at perimeters and joints using methods recommended by barrier manufacturer, including steel support sections as appropriate. Completed installation to be stable, secure and continuous, with no gaps. Gaps: Seal at junctions with partition heads, ceiling system, structural soffit, walls, ducts, pipes etc. with mineral wool or suitable sealant. 695 Installing air plenum barriers above demountable suspended ceilings Shared by: /190 Unit (modular) suspended ceiling system type 1; type 2; type 3 and type 4. Requirements: Permanently stable, continuous and airtight. Fixing: Fix tightly at perimeters and joints using methods recommended by the barrier manufacturer. Edges and joints: Seal effectively to prevent air leakage. Special requirements: Where barriers are also fire and smoke barriers, double boarding with staggered joints will be required to achieve the designated fire and smoke rating. Restrain quilted barriers on all edges and stitch and lap as manufacturers' instructions to achieve the required fire and smoke rating. 700 Installing upstands and bulkheads to demountable suspended ceilings Shared by: /190 Unit (modular) suspended ceiling system type 1; type 2; type 3 and type 4. Vertical ceiling systems: Support and brace to provide alignment and stability. High upstands: Provide support at base of upstand. 710 Installing integrated services in demountable suspended ceilings Shared by: /190 Unit (modular) suspended ceiling system type 1; type 2; type 3 and type 4. Criteria: Position services accurately, support adequately. Align and level in relation to the ceiling and suspension system. Do not diminish performance of ceiling system. Small fittings: Support with rigid backing boards or other suitable means. Do not damage or distort the ceiling. Surface spread of flame rating of additional supporting material: Not less than ceiling material. Services outlets: - Supported by ceiling system: Provide additional hangers. - Independently supported: Provide flanges to support ceiling system. Services in ceiling void: Space beneath installed services to be sufficient for installation and removal of ceiling system components and periodic removal and replacement of infill units. System completion 830 Operation and maintenance manual Shared by: /190 Unit (modular) suspended ceiling system type 1; type 2; type 3 and type 4. Page 14 of Demountable suspended ceiling systems

15 Contents: - Replacement: Correct methods for removing and replacing components. - Cleaning: Cleaning methods and materials. - Decoration: Recommendations for redecoration. - Fire rating: Ceiling systems intended for fire protection - limitations placed on subsequent alterations and maintenance procedures, to ensure that their fire performance is not impaired. 840 Spares for demountable suspended ceilings Shared by: /190 Unit (modular) suspended ceiling system type 1; type 2; type 3 and type 4. Spares to be supplied: One box infill units of each type used for project. Page 15 of Demountable suspended ceiling systems

16 Acrylic and resin-bound aggregate paving systems System outline 155 Resin-bonded aggregate paving system Wetpour to Reception and Nursery play area System manufacturer: RTC Safety Surfaces OR EQUIVALENT System reference: Wetpour Subgrade improvement layer: as Civil Engineer's specification Geotextile below granular sub-base: as Civil Engineer's specification Granular sub-base: as Civil Engineer's specification Base course: as Civil Engineer's specification Binder course: as Civil Engineer's specification Surface course: - Binder: Manufacturer's Standard. - Chippings: /340 Decorative aggregates for bonded surfacing. Edge restraints: Required. Applied surface features: refer to Landscape drawings. Samples required: /310 Product samples. Execution: /609 Laying acrylic and resin based surfaces generally. System completion: Manufacturer's Standard. Products 310 Product samples Used by: /155 Resin-bonded aggregate paving system Wetpour to Reception and Nursery play area. Submittals: colour samples Purpose: For use as a reference sample. Labelling: Clearly label all submitted samples. State full details of composition of mix. Timing: prior to installation Execution 609 Laying acrylic and resin based surfaces generally Used by: /155 Resin-bonded aggregate paving system Wetpour to Reception and Nursery play area. Adverse weather during laying of granular pavements: Page 16 of Acrylic and resin-bound aggregate paving systems

17 - Frozen materials: Do not use. - Laying not permitted: During freezing conditions. If the air temperature reaches 0 C, or in calm dry conditions -3 C, on a falling thermometer and During periods of continuous or heavy rain or if there is standing water on the base. Preparation: Remove loose material and rubbish. Method: - Setting out: Start from an edge restraint. - Adjacent work: Form neat junctions. Do not damage. - Channels, gullies, etc: Keep clear. Prevent damage. Page 17 of Acrylic and resin-bound aggregate paving systems

18 Unit paving systems System outline 150 Small unit unbound paving system type Brick to Block N as clause /150 System manufacturer: as clause /150 Granular sub-base: as Civil Engineer's specification Geotextile below laying course: as Civil Engineer's specification Laying course: as Civil Engineer's specification Paving course: - Paving units: /400 Precast concrete paving blocks type Facing brick - Jointing: as Civil Engineer's specification Samples required: /305 Product samples. Execution: /665 Laying unbound concrete block and clay paver pavements. System completion: /801 Protection of completed pavements. 150 Small unit unbound paving system type Modular concrete paving blocks to walkways System performance: To Civil Engineer's specification Laying course: To Civil Engineer's specification Paving course: - Paving units: and /400 Precast concrete paving blocks type to Walkways. Applied surface features: Recessed matwell System completion: /801 Protection of completed pavements. Products 305 Product samples Used by: /150 Small unit unbound paving system type Brick to Block N as clause /150. Submittals: Sample brick Purpose: For use as a reference sample. Labelling: Clearly label all submitted samples. Timing: prior to commencing works Execution 607 Laying unit pavings generally Used by: /665 Laying unbound concrete block and clay paver pavements. Standard: In accordance with Highways England MCHW Volume 1: Specification for highway works (SHW). Page 18 of Unit paving systems

19 Setting out: Start from an edge restraint. Paving units: Free of damage, mortar and sand stains. Interlocking units to be adequately connected Appearance: Smooth and even with regular joints. Accurate to line, level and profile. Cut edges: Turn inwards where possible. Do not position against edge restraints or other features. Laying course: Grade consistently and accurately. Spread and compact to produce uniform thickness and support for paving units. Bedding of paving units: Firm so that rocking or subsidence does not occur or develop. Falls: away from building. Refer to Civil Engineer's specification Laying on slopes: Lay paving units upwards from the bottom of slopes. 665 Laying unbound concrete block and clay paver pavements Used by: /150 Small unit unbound paving system type Brick to Block N as clause /150. General requirements: /607 Laying unit pavings generally. Standard: In accordance with BS Bond: refer to Landscape details Joint width: 2 5 mm. System completion 801 Protection of completed pavements Shared by: /150 Small unit unbound paving system type Brick to Block N as clause /150 and type Modular concrete paving blocks to walkways. Mortar bedded paving: - Protection: Protect from pedestrian or vehicular traffic for the minimum required periods. - Traffic free periods (minimum): Page 19 of Unit paving systems

20 Roof light, roof window and roof ventilator systems System outline 170 Rooflight system System performance: /252 Weathertightness of rooflights, roof windows and roof ventilators by test standard and /270 Acoustic performance of rooflights, roof windows and roof ventilators weighted sound reduction index. System manufacturer: To suit liquid applied warm roofing system /140 Rooflight: /410 Framed rooflights type Monopitch; /410 Framed rooflights type Flat; and /410 Framed rooflights type Access hatch. Hardware: Ventilation as mechanical specification Operation: /405 Window opening devices. System accessories: /345 Security to rooflights; and /360 Roller blinds to windows type Dim-Out. Internal lining: 12.5mm Fermacell as clause /170 Execution: /645 Forming kerbs for rooflights, roof windows and roof ventilators. System completion: /815 Documentation relating to roof glazing systems. System performance 252 Weathertightness of rooflights, roof windows and roof ventilators by test standard Used by: /170 Rooflight system. Air permeability: As mechanical specification Watertightness: As mechanical specification Resistance to wind load: As structural specification 270 Acoustic performance of rooflights, roof windows and roof ventilators weighted sound reduction index Used by: /170 Rooflight system. Standards: Laboratory tested in accordance with BS EN ISO and rated in accordance with BS EN ISO Testing company: UKAS accredited (or European equivalent). Weighted sound reduction index: - Rw (minimum): 30 db. Demonstrating performance: - Submittals: Laboratory test results. - Testing company: UKAS accredited (or European equivalent). Page 20 of Roof light, roof window and roof ventilator systems

21 Execution 645 Forming kerbs for rooflights, roof windows and roof ventilators Used by: /170 Rooflight system. Setting out: Form around opening and fix to exact finished level. Components: - Kerbs: Material: Manufacturer's standard Fixing: Submit proposals. - Flashings: Material: /330 Metal flashings. Fixing: Submit proposals. Setting out: Submit proposals. System completion 815 Documentation relating to roof glazing systems Used by: /170 Rooflight system. Performance evidence: - Generally: Test evidence must be in the name of the roof window unit or system manufacturer, or approved installer. - Acoustic attenuation: Provide third party certification of product conformity for specified acoustic performance for sound attenuating for each applicable roof window unit supplied. - Weathertightness: Provide third party certification of system conformity for specified weathertightness performance for each applicable roof window system installation. Submittals: - Approved installer validation certification: Required. - Manufacturer's operation and maintenance instructions for the following products: Submit proposals. - Number of copies: As Health & Safety File Page 21 of Roof light, roof window and roof ventilator systems

22 Flat roof covering systems System outline 140 Liquid applied warm roof covering system System performance: /210 Roof covering design. Installed by Bauder Approved Contractor System manufacturer: Bauder LiquiTEC Roof System. Cold applied. OR EQUIVALENT Preparation: - Existing substrates: /600 Assessing suitability of substrate. - Skirtings and vertical work: /385 Timber fillets. As recommended by manufacturer. At junctions with existing. Min. 150mm upstands Vapour control layer: BauderTEC KSD DUO self-adhesive elastomeric bitumen vapour barrier Insulation: - Type: /430 Polyisocyanurate (PIR) foam board type A and. Carrier membrane: - Type: Bauder SA Bonding Primer to seal 18mm WBP plywood roof deck substrate Liquid applied waterproof coating: - Type: Cold liquid applied PMMA based resin as part of the LiquiTEC Roof System. 3 coats with top coat incorporating heavy duty wearing course for access. - Reinforcement: /350 Polyester fibre fleece reinforcement. - Surface treatment: RAL 7031 blue grey System accessories: /345 Roof membrane perimeter trims type A and Fall Arrest system as clause /110 Execution: /656 Applying liquid applied coatings and /664 Applying walkway coating. System completion: /850 Completion. 185 Reinforced bitumen membrane warm roof covering system System performance: Airtech System Flame free System manufacturer: Bauder OR EQUIVALENT Preparation: - Existing substrates: /614 Removing existing coverings or chippings. Bauder SA Bonding Primer - Skirtings and vertical work: /385 Timber fillets. Vapour control layer: - Type: BauderTEC KSD Mica Vapour Barrier Insulation: - Type: Bauder PIR FA-TE flat board Page 22 of Flat roof covering systems

23 Overlay: - Type: As required to existing roofs. Waterproof covering: - First layer: Type: BauderTEC KSA DUO Underlayer Attachment: Self-adhesive - Top layer: Type: BauderTEC KSO SN Cap Sheet Attachment: Self-adhesive elastomeric bituminous membrane with laps sealed with 240V hot air welding equipment Detail work: - Ancillary items: Proprietary Surface protection: As details System accessories: /345 Roof membrane perimeter trims type TO FELT ROOFS. System performance 210 Roof covering design Used by: /140 Liquid applied warm roof covering system. General: - Waterproof covering: Secure and weathertight. - Roof surfaces: Free draining. Execution 600 Assessing suitability of substrate Used by: /140 Liquid applied warm roof covering system. Substrate: - Condition: Secure, clean, dry, smooth, free from frost, contaminants, voids, protrusions, organic growths, and compatible with the proposed waterproofing system. - Grade: To correct falls. Preliminary work: - Upstands, kerbs, box gutters, sumps, grooves, chases and expansion joints: Correctly formed. - Battens, fillets, trims and anchoring plugs or strips: Securely fixed. - External angles: Chamfered where required to facilitate laying of membrane or to maintain full thickness of applied coating. - Movement joints: Correctly formed and free of debris. - Penetrations and outlets: Fixed and located at correct height relative to substrate and free of debris. - Chases: Correctly sized and cut. - Outlets: Fixed and located at correct height relative to substrate. Page 23 of Flat roof covering systems

24 614 Removing existing coverings or chippings Used by: /185 Reinforced bitumen membrane warm roof covering system. Mechanical stripping: Permitted only in approved areas. Areas to be removed: Sufficient to accommodate extensions Exposed substrate: Do not damage. Protect from associated work and weather. Timing: Remove only substrates and coverings that will be renewed and made weathertight on same day. 656 Applying liquid applied coatings Used by: /140 Liquid applied warm roof covering system. Thickness: - Requirement: Monitor by taking wet/ dry film thickness readings. - Consistency: Maintain full thickness of coatings around angles, junctions and features. Rainwater outlets: Form with watertight joints. Drainage systems: Do not allow liquid coatings to enter piped rainwater or foul systems. Edge trims: Apply coatings over horizontal leg of trim and into recess. 664 Applying walkway coating Used by: /140 Liquid applied warm roof covering system. Application rate (minimum): Submit proposals. Surface coverage: Even and full. System completion 850 Completion Used by: /140 Liquid applied warm roof covering system. Roof areas: Clean. Outlets: Clear. Flashings: Dress into place. Work necessary to provide a weathertight finish: Complete. Storage of materials on finished surface: Not permitted. Completed waterproof covering: Do not damage. Protect from petroleum based solvents and other chemicals, traffic and adjacent or high level working. Page 24 of Flat roof covering systems

25 Profiled sheet roof covering systems System outline 150 Metal profiled sheet roof covering system System performance: /290 Compliance with performance requirements. System manufacturer: Euroclad Ltd System reference: Vieo 25_454 Liner sheets: - Material: /310 Aluminium profiled sheet. Vapour control layer: - Material: Euroclad Elite VCL Thermal insulation: /335 Flexible rock wool mat insulation. Breather membrane: - Material: /323 Vapour permeable sheets. External sheets: - Material: /310 Aluminium profiled sheet. Fascia: - Material: To match roof sheet. Soffit: - Material: To match roof sheet. Gutters: - Material: To match roof sheet. Proprietary concealed gutter drains to heat-sealed downpipes inside columns Glazing: Rooflight as clause /170 System accessories: Submit proposals. Execution: /625 Installing metal profiled sheet roofing. System completion: /895 Verification of performance. System performance 290 Compliance with performance requirements Used by: /150 Metal profiled sheet roof covering system. Requirement: Proof of compliance with specified performance. Method: - Testing authority: UKAS approved independent test agency. Submittals: - Format: Submit proposals. - Timing: Submit proposals. Page 25 of Profiled sheet roof covering systems

26 Execution 615 Installing profiled sheet roofing generally Used by: /625 Installing metal profiled sheet roofing. Cut edges: Clean true lines. Sheet orientation: Exposed joints of side laps away from prevailing wind. Sheet ends, laps and raking cut edges: Fully support. Locate fixings at top of lap. Fasteners: - Holes: Drill. - Positions: At regular intervals in straight lines. Centre on support bearings. - Fasteners torque: Sufficient to correctly compress washer. End laps sealing: Butyl rubber sealant tape Side laps sealing: Butyl rubber sealant tape Butt joints: Strapped and sealed. Penetration edge reinforcement: Submit proposals. Debris: Remove dust and other foreign matter before finally fixing sheets. No dust or foreign matter to be present within construction. 625 Installing metal profiled sheet roofing Used by: /150 Metal profiled sheet roof covering system. General requirements: /615 Installing profiled sheet roofing generally. Covering system type: As standard Pitch: As drawings Penetration opening sizes: Minimum necessary. Position of fasteners in oversized drilled holes: Central. Cut edges: Paint to match face finish. Fasteners: - Position: Manufacturer's standard Additional requirements: As drawings System completion 895 Verification of performance Used by: /150 Metal profiled sheet roof covering system. Requirement: Check completed system and provide assurance of compliance with specified performance. Submittals: - Format: Description of inspections, remedial works carried out and certification of compliance. - Timing: To suit Health & Safety File Page 26 of Profiled sheet roof covering systems

27 Cementitious screed systems System outline 130 Floating cementitious levelling screed system - Floating System performance: /220 In situ crushing resistance. Preparation: /602 Assess suitability of substrate and /614 Preparation of substrate for floating construction (board insulation). Movement joints: - Components: /410 Strip movement joints. Insulation: /430 Polyisocyanurate (PIR) foam board type B. Separation layer: /356 Polyethylene sheets. Screed: /345 Cementitious levelling screed mix. Accessories: /335 Preformed access ducts and insulated upstand at perimeter. Execution: /618 Installing conduits under floating screeds; /646 Laying cementitious levelling/ wearing screeds; /650 Checking surface regularity of floor screeds; /654 Compaction of screeds; /664 Forming joints in levelling screeds; /666 Forming bay joints in levelling screeds; /676 Installing strip movement joints; /680 Installing structural movement joints; /684 Trowelled finish to levelling screeds; /696 Protection from extreme temperatures; /698 Curing; /656 Screeding to falls; and /672 Forming crack-inducing grooves in levelling screeds. System performance 220 In situ crushing resistance Used by: /130 Floating cementitious levelling screed system - Floating. ISCR testing: - Standard: In accordance with BS Floor usage category: Tables 3 and 4. - Testing of bonded and unbonded screeds: To Annex D. - Testing of floating levelling screeds: To Annex E. ISCR requirements: - Screed category: B (4 mm maximum indentation). Test results: Submit showing compliance. Page 27 of Cementitious screed systems

28 Execution 602 Assess suitability of substrate Used by: /130 Floating cementitious levelling screed system - Floating. General: Suitable for specified levels and regularity of finished surfaces. Consider permissible minimum and maximum thicknesses of screeds. Sound and free from significant cracks and gaps. Concrete strength: In accordance with BS , Table 2. Cleanliness: Remove plaster, debris and dirt. Moisture content: - Existing concrete: To suit screed type. - New concrete slabs to receive fully or partially bonded construction: Dry out by exposure to the air for at least six weeks. 614 Preparation of substrate for floating construction (board insulation) Used by: /130 Floating cementitious levelling screed system - Floating. Insulation: Lay with butt joints. Continue up at perimeter abutments for full depth of screed. Separating layer: Lay over insulation and turn up at perimeter abutments. Lap 100 mm at joints. 618 Installing conduits under floating screeds Used by: /130 Floating cementitious levelling screed system - Floating. Haunching: Before laying insulation for floating screeds, haunch up in 1:4 cement:sand on both sides of conduits. 646 Laying cementitious levelling/ wearing screeds Used by: /130 Floating cementitious levelling screed system - Floating. Standard: In accordance with BS Thickness: - Nominal: 75mm - Minimum: 50 mm. 650 Checking surface regularity of floor screeds Used by: /130 Floating cementitious levelling screed system - Floating. Standard: To BS , Table 2. Test: To BS , Annex A. Sudden irregularities: Not permitted. Deviation of surface: - Method: Measure from underside of a 2 m straight-edge (between points of contact), placed anywhere on surface. - Permissible deviation (maximum): 5 mm. Page 28 of Cementitious screed systems

29 654 Compaction of screeds Used by: /130 Floating cementitious levelling screed system - Floating. General: Compact thoroughly over entire area. Screeds over 50 mm thick: Lay in two layers of approximately equal thickness. Roughen surface of compacted lower layer then immediately lay upper layer. 656 Screeding to falls Used by: /130 Floating cementitious levelling screed system - Floating. Minimum screed cover: Maintain at the lowest point. Falls: - Generally: Gradual and consistent. Locally reduce insulation thickness to 50mm thick to maintain minimum screed thickness. - Gradient (minimum): As indicated on room layout drawings. 664 Forming joints in levelling screeds Used by: /130 Floating cementitious levelling screed system - Floating. Laying screeds: Lay continuously using 'wet screeds' between strips or bays. Minimize defined joints. Daywork joints: Form with vertical edge. 666 Forming bay joints in levelling screeds Used by: /130 Floating cementitious levelling screed system - Floating. Bay sizes: - Area (maximum): 40 m². - Length (maximum): 8 m. Location of bay joints: Coordinate with those required for substrate slab and floor covering. 672 Forming crack-inducing grooves in levelling screeds Used by: /130 Floating cementitious levelling screed system - Floating. Groove depth (minimum): Half the screed depth. Cutting grooves: Straight, vertical. Position accurately. Method: Saw cut sufficiently early after laying to prevent random cracking. 676 Installing strip movement joints Used by: /130 Floating cementitious levelling screed system - Floating. Installation: Set securely into screed to exact finished level of floor. Extend joints through to substrate. Secure fixing to substrate: To manufacturer's recommendation. 680 Installing structural movement joints Used by: /130 Floating cementitious levelling screed system - Floating. Installation: - Position: Centre over joints in substrate. Set to exact finished level of floor. Page 29 of Cementitious screed systems

30 - Metal edging: Secure to substrate at 600 mm centres. 684 Trowelled finish to levelling screeds Used by: /130 Floating cementitious levelling screed system - Floating. Timing: Carry out all finishing operations at optimum times in relation to setting and hardening of screed material. Prohibited treatments to screed surfaces: Wetting to assist surface working and Sprinkling cement. Floating: To an even texture with no ridges or steps. Trowelling: To a uniform, smooth but not polished surface, free from trowel marks and other blemishes, and suitable to receive specified flooring material. 696 Protection from extreme temperatures Used by: /130 Floating cementitious levelling screed system - Floating. Cold weather: Maintain screed surface temperature above 5 C for at least four days after laying. Hot weather: Prevent premature setting or drying out. 698 Curing Used by: /130 Floating cementitious levelling screed system - Floating. General: Prevent premature drying. Immediately after laying, protect surface from wind, draughts and strong sunlight. As soon as screed has set sufficiently, closely cover with polyethylene sheeting. Curing period (minimum): Seven days. Drying after curing: Allow screeds to dry gradually. Do not subject screeds to artificial drying conditions. End result: Reduce cracking or other shrinkage related problems. Page 30 of Cementitious screed systems

31 Resilient and textile adhesive fixed floor covering systems System outline 110 Carpet tile system type Classrooms / Group rooms / Corridors Preparation: - Base: As manufacturer's recommendations - Prior to flooring: /615 Conditioning of flooring prior to laying. - Environmental conditions: /620 Environmental conditions before, during and after laying type B. Rigid underlay: - Type: As manufacturer's recommendations Smoothing and levelling underlayment compound: As manufacturer's recommendations Primer: As manufacturer's recommendations Carpet tiles: - Type: /380 Pile carpet tiles - Third party certification: In accordance with the Carpet Foundation suitability factor. Fixing: As manufacturer's recommendations System accessories: As manufacturer's recommendations Execution: /690 Setting out of tiles; /710 Fixing adhesive laid carpet tiles; and /630 Assessing suitability of bases type B. System completion: /820 Spare material. 110 Carpet tile system type LRC and Group Areas adjacent to corridors Preparation: - Base: As manufacturer's recommendations - Prior to flooring: /615 Conditioning of flooring prior to laying. - Environmental conditions: /620 Environmental conditions before, during and after laying type B. Rigid underlay: - Type: As manufacturer's recommendations Smoothing and levelling underlayment compound: As manufacturer's recommendations Primer: As manufacturer's recommendations Carpet tiles: - Type: /380 Pile carpet tiles - Third party certification: In accordance with the Carpet Foundation suitability factor. Fixing: As manufacturer's recommendations System accessories: As manufacturer's recommendations Page 31 of Resilient and textile adhesive fixed floor covering systems