Table of Contents. Windows/Doors/Stairs. Windows/ Rooflights/ Screens/ Louvres / Rev A Tender Issue

Transcription

1 Table of Contents Title Page L Windows/Doors/Stairs

2 L Windows/Doors/Stairs

3 Revision P8 Section Revision History No. Purpose P1 Glazing thicknesses added 26 Oct 2007 P2 Issue to Design Team for Comment 14 Feb 2008 P3 Metal Louvre Specification added 30 Apr 2008 P4 1 May 2008 P5 RAL Colour confirmed - RAL Louvres and windows 19 May 2008 P6 Clause 330A for Aluminium System added and Rooflight 23 Jul 2008 updated P7 Omitted Clause 820A 23 Jul 2008 P8 Clarification of minimum glazing requirements

4 To be read with Preliminaries/ General conditions. GENERAL 110 EVIDENCE OF PERFORMANCE Certification: Provide independently certified evidence that all incorporated components comply with specified performance requirements. 120 SITE DIMENSIONS Procedure: Before starting work on designated items take site dimensions, record on shop drawings and use to ensure accurate fabrication. Designated items: All windows, rooflights, internal screens and louvres. 140 CONTROL SAMPLES Procedure: - Finalise component details. - Fabricate one of each of the following designated items as part of the quantity required for the project. - Obtain approval of appearance and quality before proceeding with manufacturer of the remaining quantity. Designated items: Internal timber screens as clause 510 and an entire workable external window unit as clause 330A. Page 1 of 8

5 PRODUCTS 330A ALUMINIUM EXTERNAL WINDOWS - Window production facilities will operate an ISO 9001 quality control system. - Warranty & design life: The window system will have an expected design life of at least 40 years and a schedule of maintenance will be provided. Independent assessment of life cycle analysis and design life using EDIP method will be provided for CA approval. The complete window inclusive of framing, gaskets, ironmongery and glazing will be covered by a 12 year warranty. Materials: - Exterior and Interior frames: [Thermally broken dual colour extruded aluminium profiles, Face Dimensions, including any combinations of frame and opening lights, to acheive a minimum Daylight Factor of 2 based on specified Structural Openings and fenestration design]. Finish: [Polyester powder coated to current British Standards. Minimum dry film thickness: microns. Colour: externally RAL (7000 dark grey) to gloss level 77%.] Internally RAL TBC. PERFORMANCE - Weathertightness: To BS 6375 Part 1 - Exposure category: 1600 Pa - Air permeability: Tested in accordance with BS EN 1026: Class 4 to BS EN Needs to contribute to the overall buiding air tightness requirements. - Watertightness: Tested in accordance with BS EN 1027: Class E1500 to BS EN Resistance to wind: Tested in accordance with BS EN 12211: Class A4 to BS EN Design wind pressure: Calculated in accordance with BS : 1997 either on the following statistical factors or the design wind pressure, both provided by the CA Consulting Engineer. The windows shall accommodate the specified structural deflections and applied environmental loads with no deformation or damage. Manufacturer to submit details to confirm suitability for the location and altitude of the site. - Design wind pressure: 2000Pa - Wind loading assessments and calculations to be submitted by the manufactureer for verification by the consultant chartered engineer. - Thermal Properties: The window system shall be tested in accordance with British Standards. All thermal data and calculations supplied must be for the complete window units. Centre pane U-values for insulating glazing units alone will not be acceptable. A thermal data sheet must be supplied to detail all individual U-values for each window type, and a weighted average U-value for all units within the same order for CA approval. Required U-Value to be 20% better than current U-Values as noted with the Building Regulations. - Acoustic Performance: The complete window system including the specified glazing will be tested in accordance with relavant BS clauses. All acoustic data supplied must be for complete window units, not the insulating glazing units alone. Full acoustic test reports must be supplied where appropriate for CA approval. - Weighted sound reduction index (Rw) within 100 to 3150 Hz frequency range to British Standards between internal and external surfaces of window (minimum): Rw:35dB - Security: Where applicable, the window system will be tested to BS 7950: 1997 and independently certified to the requirements of Secured by Design through accredited factory audits and shall be registered as a licensed product. Page 2 of 8

6 - U-Value: The weighted average of the complete glazing system shall have a thermal transmittance (U-value) not exceeding 1.75 W/m2K, calculated in accordance with BS EN 673: VISION GLAZING: Minimum requirements for the double glazed units only are as follows: GROUND FLOOR: Inner pane: 6.4mm Laminated Low emissivity glass AND CURTAIN Cavity: 14mm ARGON filled WALLING Outer pane: 4mm Toughened glass GROUND FLOOR: Inner pane: 6.4mm Laminated Low emissivity glass N. ELEVATION Cavity: 14mm ARGON filled ONLY Outer pane: 6mm Toughened glass FIRST FLOOR: Inner pane: 6mm Toughended glass AND SECOND Cavity: 14mm ARGON filled FLOOR Outer pane: 4mm Toughened glass Note: Variations on these requirments can be submitted provided test certificates are included for the complete window unit. Spectrophotometric data in accordance with BS EN 410: Glass in building Determination of luminous and solar characteristics of glazing Total solar energy transmission of normal incident solar radiation (maximum g- value):75% Total light transmission (minimum LT-value): As recommended by the window manufacturer to achieve the required Daylight factor. - INSULATED GLAZED SPANDREL NON-VISION PANELS: Type: Internally insulated and enamel faced 6.4 glass Laminated: NOTE For continuity of thermal insulation as within internal wall construction; the details show the scope of additional insulation to achieve the required U-value. - NON-VISION INSULATED PPC ALUMINIUM PANEL Type: Insulated panel glazed into the unit External and internal material: Aluminium sheet in compliance with British Standards for polyester powder coating. Core insulation: To achieve a U Value 20% better than Building Regulations - ie 0.28 W/M2K External and internal finish: Polyester powder coating minimum dry film thickness: microns. External Colour RAL 7000 to gloss level of 77%. Internal Colour RAL TBC. Fixing: [Lug fixing as clause 782 or 784 as appropriate].size: As recommended by System Manufacturer. Configuration: As drawings. Finish as delivered: As recommended by System Manufacturer, Aluminium components to be RAL Ironmongery/ Accessories: espagnolette lock and actuators to clerestorey glazing in classrooms and corridor - refer to drawings for locations. Operation: Concealed Actuators. Page 3 of 8

7 400A COMPOSITE WINDOWS ALUMINIUM CLAD WOOD Manufacturer: Velfac Ltd, M.I.O.C., Suite 11A, Styal Road, Manchester. M22 5WB. Telephone: Fax: Web: Contact: Lee de Gray. Mobile: Product reference: Velfac 200 series composite windows. - Type: Windows and window walling are to be a unitised composite aluminium/wood system, with an independent thermally isolated aluminium sash. Aluminium sash profiles will be fully ventilated and drained through concealed drainage channels and incorporate an aluminium glazing rebate. The window system will have slim 54mm external profiles and all opening and fixed lights will have consistent sightlines. All units will be delivered fully finished with all ironmongery fitted and factory dry glazed with EPDM co-extruded single piece gaskets and internal glazing beads. Softwood windows with an external aluminium cladding or aluminium windows with an internal timber cladding or externally beaded glazing will not be permitted. - Manufacture: Window production facilities will operate an ISO 9001 quality control system, and will manufacture in accordance with the technical provisions of the DVC. Each individual window will be permanently labelled with a unique production reference concealed in the rebate of the frame to aid replacement and/or conversion and/or repair. The identification label system will form part of the manufacturing quality control and associated audit tracing. - Warranty & design life: The window system will have an expected design life of at least 40 years and a schedule of maintenance will be provided. Independent assessment of life cycle analysis and design life using EDIP method will be provided for CA approval. The complete window inclusive of framing, gaskets, ironmongery and glazing will be covered by a 12 year warranty. Materials: - Exterior frame/ sash cladding: Extruded aluminium profiles in accordance with BS EN , BS EN & BS EN 755-9, alloy EN AW-6060 T5, EN AW-6063 T5, EN AW- 6082, EN AW Dimensions: 54 mm face dimension.. Finish: Polyester powder coat in compliance with BS EN 6496, BS EN 6497, & DIN with applicators to be registered under the European Qualicoat and/or GSB quality assurance schemes. Minimum dry film thickness: microns. Colour: RAL (7000 dark grey) to gloss level 77%. - Interior frame/ sash section: North European Pine (Pinus Sylvesteris), density 500kg/m3 at 12% moisture, with a typical moisture content of between 9-15%. Dimensions: 50 x 90 mm and/or 50 x 115 mm. Finish: VACUMAT preservative treated and factory finished with two coats of solvent free, micro-porous clear lacquer or acrylic paint containing anti-mould fungicide. Dipped, brushed or site applied finishes will not be acceptable. Minimum dry film thickness: microns. Colour: Clear Pine to gloss level 25%. Performance - Weathertightness: To BS 6375 Part 1 Exposure category: 1600 Pa Air permeability: Tested in accordance with BS EN 1026: Class 4 to BS EN Watertightness: Tested in accordance with BS EN 1027: Class E1500 to BS EN Resistance to wind: Tested in accordance with BS EN 12211: Class A4 to BS EN Design wind pressure: Calculated in accordance with BS : 1997 either on the following statistical factors or the design wind pressure, both provided by the CA Consulting Engineer. The windows shall accommodate the specified structural deflections and applied environmental loads with no deformation or damage. Page 4 of 8

8 Basic wind speed (Vb): Assume severe: To be confirmed at Stage F Altitude factor (Sa): To be confirmed at Stage F Direction factor (Sd): To be confirmed at Stage F Seasonal factor (Ss): 1 Probability factor (Sp): 1 Terrain and building factor (Sb): To be confirmed at Stage F Size effect factor (Ca): 1 External pressure coefficients (Cpe): To be confirmed at Stage F Internal pressure coefficients (Cpi): To be confirmed at Stage F Design wind pressure: 2000Pa Wind loading assessments and/or formal calculations by a chartered engineer will be provided for CA inspection. - Thermal Properties: The window system shall be tested in accordance with BS EN ISO : All thermal data and calculations supplied must be for the complete window units. Centre pane U-values for insulating glazing units alone will not be acceptable. A thermal data sheet must be supplied to detail all individual U-values for each window type, and a weighted average U-value for all units within the same order for CA approval. Required U-Value to be 20% better than current U-Values as noted with the Building Regulations. - Acoustic Performance: The complete window system including the specified glazing will be tested in accordance with BS EN ISO 140-3: 1995 (BS : 1995). All acoustic data supplied must be for complete window units, not the insulating glazing units alone. Full acoustic test reports must be supplied where appropriate for CA approval. Weighted sound reduction index (Rw) within 100 to 3150 Hz frequency range to BS EN ISO (BS EN ) between internal and external surfaces of window (minimum): Rw:35dB - Security: Where applicable, the window system will be tested to BS 7950: 1997 and independently certified to the requirements of Secured by Design through accredited factory audits and shall be registered as a licensed product. Glazing details: Generally: Windows will be delivered to site pre-glazed with insulating glass units conforming to: BS 952: 1995: Glass for Glazing Part 1: Classification BS EN 572: 2004: Glass in building Basic soda lime silicate glass products Part 2: Float glass BS EN 12150: 2000: Glass in building Thermally toughened soda lime silicate safety glass Part 1: definition and description BS EN ISO 12543: 1998: Glass in building Laminated safety glass BS 6262: 1982: Code of practice for glazing for buildings BS 6262: 2005: Glazing for buildings Part 4: Code of practice for safety related to human impact BS 6206: 1981: Specification for impact performance requirements for flat safety glass and safety plastics for use in buildings BS EN 12600: 2006: Specification for Impact Performance BS EN 1279: 2002: Glass in building Insulating glass units - VISION GLAZING: GROUND FLOOR: Inner pane: 6.4mm Laminated Low emissivity glass AND CURTAIN Cavity: 13.6mm ARGON filled WALLING Outer pane: 4mm Toughened glass GROUND FLOOR: Inner pane: 6.4mm Laminated Low emissivity glass N. ELEVATION Cavity: 13.6mm ARGON filled ONLY Outer pane: 6mm Toughened glass Page 5 of 8

9 FIRST FLOOR: Inner pane: 6mm Toughended glass AND SECOND Cavity: 13.6mm ARGON filled FLOOR Outer pane: 4mm Toughened glass Centre pane thermal transmittance (U-value) not exceeding 1.58 W/m2K, calculated in accordance with BS EN 673: 1998: Spectrophotometric data in accordance with BS EN 410: Glass in building Determination of luminous and solar characteristics of glazing Total solar energy transmission of normal incident solar radiation (maximum g- value):75% Total light transmission (minimum LT-value): As receommended by Velfac to suit their 200 system - INSULATED GLAZED SPANDREL NON-VISIONPANELS: Type: VELFAC internally insulated and enamel faced 6.4 glass Laminated: NOTE For continuity of thermal insulationas within internal wall construction; the details show the scope of additional insulation to achieve the required U-value. - NON-VISION INSULATED PPC ALUMINIUM PANEL Type VELFAC composite insulated panel glazed into the unit Externaland internal material: Aluminium sheet in compliance with EN AW-1055 or EN AW-1050 for polyester powder coating Core insulation: Polyeurethane board with core density of kg/m3 External and internal finish: PPC in compliance with BS EN 6496, BS EN 6497, & DIN with applicators registererd under the European Qualicoat and/or quality assuranceschemes. Polyester powder coating minimum dry film thickness: microns. External Colour RAL 7000 to gloss level of 77%. Internal Colour RAL 7000 to gloss level of 77%. - Type: VELFAC VENTILATED ALUMINIUM PANEL: External material: Aluminium sheet in compliance with EN AW-1055 or EN AW-1050 for polyester powder coating OR Aluminium sheet in compliance with EN AW-5005 for anodising. Internal material: 9mm glassfibre reinforced, humidity proof and diffusion open paper covered plaster board Spacer & cavity: Fully ventilated cavity with vacuum impregnated timber spacer profiles. Internal Facing board: MDF-panels manufactured in accordance with the "E1-standard" with a formaldehyde content of less than 7 milligram per 100 gram of board. 12mm Veneered chipboard External finish: Polyester powder coat in compliance with BS EN 6496, BS EN 6497, & DIN with applicators to be registered under the European Qualicoat and/or GSB quality assurance schemes. Polyester powder coat minimum dry film thickness: microns OR Anodising in accordance with EN External colour: RAL 7000 To be completed to gloss level 77% Internal colour: RAL 7000 To be completed to gloss level 77% Loose fill insulation: Insulation with a k value of W/mK and vapour barrier to be provided by window installer. Thermal performance: Upanel = 0.40 W/m2K for 90mm timber frames OR 0.32 W/m2K for 115mm timber frames. Ironmongery/ Accessories: espagnolette lock and actuators to clerestorey glazing in classrooms - refer to drawings for locations. Fixing: Lug fixing as clause 784. Page 6 of 8

10 460A ROOFLIGHTS Manufacturer: Colt International Ltd or similiar equivalent. - Web: info@coltgroup.com. Type: Single pitch. Angle of installation: flat. Framework: - Mullions: Width: As drawings. Depth: As recommended by manufacturer. Cover plates: Hidden fixings. - Transoms: None - Thermal performance: at least 2.16 W/m²K. Glazing: Double glazed. Capping sections and flashings: Insulated. End panels: Close against wall. Fixing: Refer to detail drawings. 510 GLAZED WOOD SCREENS Location: Circulation areas. Timber: Generally to BS EN Species: softwood as table NA1. - Appearance class: J2. - Moisture content on delivery: 9-13%. Panels: 12mm plywood with mathcing veneer both sides.. Assembly adhesive: PVAC to BS EN 204, Class D4. Joinery workmanship: As section Z10. Finish as delivered: Full paint system as section M60. Glazing details: see details. Special features/ Other requirements: None. Fixing: Bolted to masonry reveal as clause METAL LOUVRES AND DOORS TO PLANT AREAS Manufacturer: Colt International Ltd double bank universal louvre. - Product reference: 2UL Shallow Section - 165mm deep overall. Material: Extruded aluminium profiles, alloy EN AW-6060 (EN Table 34), EN AW (EN Table 38), EN AW-6082 (EN Table 42), EN AW-6005 (EN Table 28), stretching and heat treatment to temper T5. - Finish as delivered: Polyester powder coat in compliance with BS6496, BS6497, GSB & DIN Anodising in compliance with EN Fire resistance rating: Not applicable. Number of louvre banks: see drawings. Louvre blade pitch and angle: Pitch: 75 mm. Blanking panels: Not required - see drawings. Accessories/ Other requirements: Access door to plant room, bird mesh to back of panel, security lock to all accessible plantroom areas.. Fixing: within system by manufacturer. 710A EXECUTION PROTECTION OF COMPONENTS General: Do not deliver to site components that cannot be installed immediately or placed in clean, dry floored and covered storage. Stored components: Factory packed vertically or near vertically on wooden pallets, separated with spacers to prevent damage, all pallets to be shrink-wrapped and labelled prior to dispatch from factory. Weight / size options to be confirmed by contractor. Page 7 of 8

11 730 PRIMING/ SEALING Wood surfaces inaccessible after installation: Prime or seal as specified before fixing components. 750 BUILDING IN General: Not permitted unless indicated on drawings. - Brace and protect components to prevent distortion and damage during construction of adjacent structure. 765 WINDOW INSTALLATION GENERALLY Installation: Into prepared openings. Gap between frame edge and surrounding construction: - Minimum: as recomended by manufacturer for system. - Maximum: as recomended by manufacturer for system. Distortion: Install windows without twist or diagonal racking. 770 DAMP PROOF COURSES IN PREPARED OPENINGS Location: Ensure correct positioning in relation to window frames. Do not displace during fixing operations. 782 FIXING OF ALUMINIUM FRAMES Standard: As section Z20. Fasteners: Stainless steel wood screws as recommmended by manufacturer. - Spacing: When not predrilled or specified otherwise, position fasteners not more than 250 mm from ends of each jamb, adjacent to each hanging point of opening lights, and at maximum 600 mm centres. 784 FIXING OF COMPOSITE FRAMES Standard: As section Z20. Fasteners: Stainless steel wood screws as recommmended by manufacturer. - Spacing: When not predrilled or specified otherwise, position fasteners not more than 150 mm from ends of each jamb, adjacent to each hanging point of opening lights, and at maximum 600 mm centres. 790 FIRE RESISTING FRAMES Gap between back of frame and reveal: Completely fill with tightly packed mineral wool. 810 SEALANT JOINTS Sealant: - Manufacturer: Adshead Ratcliffe & Co Ltd.. Product reference: Arbokol Colour: TBC. - Application: As section Z22 to prepared joints. Finish triangular fillets to a flat or slightly convex profile. Page 8 of 8