Unit 7 - College Farm, Keysoe, Bedford - Schedule of Work Barn conversion... · 0.1Ground Floor 10Concrete Ground ... 160 Ceramic Tiling Adhesive Bedded On Render To Internal Wall

Unit 7 - College Farm, Keysoe, Bedford - Schedule of Work08 Jun 2010

Table of Contents

Title Page

SUBSTRUCTURE0 3

SUPERSTRUCTURE1 5

FINISHES2 12

FITTINGS AND FURNISHINGS3 14

SERVICES4 16

EXTERNAL WORKS5 23

0 SUBSTRUCTURE

0.1 Ground Floor

10 Concrete Ground Floor on Existing Floor Drawing Reference : 293-008, 009, C32 & 044Location : Lounge/Dining, Kitchen, Bedroom 1 & 2

• Concrete For Unreinforced Floor Slabs (E10)Thickness : As drawing 293-044. Insulation : 60mm Kooltherm K3 insulated floor boards by Kingspan or similar approved insulation on levelled existing concrete floor. See also structural engineer's details for further information.Concrete : Designated GEN2.Maximum Aggregate Size : 20 mm.Coarse Recycled Concrete Aggregates : Permitted.Consistence Class :Contractor's choice.Admixtures : Concrete producer's choice.Surface Finish :Contractor's choice to suit specified covering.Surface Regularity : Maximum 5 mm gap below a 2 metre straight edge.

• Concrete Slab Perimeter Insulation (E20)Manufacturer : Kingspan or similar approved manufacturer.Product Reference : Agrément certified. Type : As underslab sheet insulation. Thickness : 25 mm.Joints : Tight butt joints.

• Floor finishManufacturer : Tile floor finish.Product Reference : Client's choice.

0.2 Wc/Wet Room

20 Floor Construction

Drawing Reference : 293-008 Location :Wc/Wet Room

• Floor Construction to Wc/Wet RoomManufacturer : Purus Ltd or similar approved specialist contractor.Product Reference : Floor construction/tanking to Wc/Wet Room by specialist contractor.

• Floor finishManufacturer : Tile floor finish.Product Reference : Employer's choice.

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To be carried forward to Section 0 collection (page 4)

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To be carried forward to Tender Summary (page 27)

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1 SUPERSTRUCTURE

1.1 Existing Internal Walls

1.2 General Note

30 Existing WallsDrawing Reference : 293-008 & C32Internal Walls : Principal contractor to clean brickwork where fairfaced brickwork is to be retained. And makegood all walls before fixing plasterboard.

40 Perimeter Wall Internal Finish

Drawing Reference : 293-008 & C32Location : Perimeter Wall internally to be lined with Kooltherm K18 (70mm/12.5mm) insulated rigid board or similar approved, mechanically fastened to minimum 50x38mm softwood timber battens/framing at maximum600mm centres. Uvalue of not less than 0.23W/m sq.K. Lining prepared to receive decorations. Paint colour to Employer's choice.

50 Repoint Internal Facing Brick Wall

Drawing Reference : 293-008 Location : Lounge/Dining

• Repointing Facing Brick (F10)Extent : Whole wall as drawing.Joint Preparation :Rake out all joints to a depth of 12-15 mm, remove debris and dampen surface.Mortar Mix : 1:1:6 cement:lime:sand.Joint Profile : As existing.

60 Existing Internal Walls

Drawing Reference : 293-008 & C32

• M20a Plasterboard Backings On Adhesive Dabs (M20A)Location : As on drawing number 293-008 Manufacturer : Gypsum or similar approved manufacturer.Plasterboard :Wallboard.Thickness : 12.5 mm.Edge Profile : Tapered.Fixing : Adhesive dabs as manufacturer's recommendations.

1.3 Roof

1.3.1 Roof Structure

70 Existing Timber TrussesDrawing Reference : 293-008, A/B30, C32 & 044Roof: : All existing trusses, purlins, wall plates and timber boarding to be inspected for disease and wood worms. Principal Contractor to apply appropriate treatment , to comply with the current building regulations.All defective timber to be removed and replaced accordingly. See Structural Engineer's drawing for additional information and details on roof construction.

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1.3.2 Roof Coverings

80 Proposed Roof Details

Drawing Reference : 293-008, A/B30 & 044Construction: : Roof to comprise of Slate to match existing on 50x25mm softwood tiling batten, on 38x19mmsoftwood counter battens, on Spirtech 250 underlay or similar approved membrane, on existing timber boarding. 100mm Kooltherm K7 Kingspan insulated rigid board or similar approved fixed between rafters.Underlay support tray cut to 150mm from pivot (see eaves detail) or similar approved. Timber fascia board tomatch existing and as indicated on the above referenced drawing.

• H71a Contractor Designed Code 4 Lead Flashing (H71A)Design Parameters : As BS 6915 and LSA Manual. Design And Detail : Lead sheet pitched roofing, guttering and flashings as drawing. Lead flashing asindicated on the drawing, design to contractor's choice.

1.3.3 Roof Drainage

90 Replace Existing Rainwater Goods With PVCU Rainwater System

Drawing Reference : 293-008, 030 & 044Roof : Remove existing guttering and make good wall and fascia board.

• Removing Rainwater GuttersExtent : Rainwater gutters and brackets.Disposal : Remove from site for recycling.

• Removing Rainwater PipeworkExtent : External rainwater pipework, including brackets.Disposal : Remove from site for recycling.

• PVCU Gutter System (R10)Manufacturer : Alumasc or similar approved manufacturer. Product Reference : Agrément certified. Recycled Material : Contractor's choice.Profile : Half round.Nominal Size : 112 mm.Colour : Black.Setting Out : As manufacturer's recommendations. Brackets : Manufacturer's standard.Bracket Centres :Manufacturer's standard.Fasteners : As manufacturer's recommendations. Accessories : Stop ends, as manufacturer's recommendation.Testing : Test on completion.

• PVCU External Rainwater Pipework System (R10)Manufacturer : Alumasc or similar approved manufacturer. Product Reference : Round Recycled Material : Contractor's choice.Section :Round.Nominal Size : DN 75.Finish As Delivered : Black.Jointing : Manufacturer's standard.Brackets : PVC-U clips, colour to match pipes.Bracket Centres : 1500 mm.Fasteners : As manufacturer's recommendations. Accessories : Rainwater heads, manufacturer's standard.Testing : Test on completion.

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1.4 External Walls

100 External Fairfaced Brickwork

Drawing Reference : 293-008, C32, 046 & 049External Brickwork : Principal Contractor to allow for making good all brickwork externally including repointing which should match existing. Bricks to be reclaimed bricks unless otherwise specified. To make good all air vents where retained and brick up to match existing where vents are to be removed, see drawings referenced above.

110 Infill External Walls

Drawing Reference : 293-008, C32, 045 & 052Location : As drawing.

1.5 Windows and External Doors

1.5.1 Windows

120 Purpose Made External Softwood Windows

Drawing Reference : 293-008, B32, 044 & 052Location : See drawing.

• Softwood Windows Purpose Made (L10)Manufacturer : As windows. Product Reference : To match existing.Type : As drawings. Size : As drawings. Species : Contractor's choice.Appearance Class : J10 to BS EN 942 for glazing beads, drip mouldings and the like. J40 or better for all other members.Section Sizes : As drawings. Joints :Contractor's choice.Adhesive : Thermosetting resin to BS EN 12765, class C4.Treatment :Water based microemulsion as Wood Protection Association Commodity Specification C5.Finish As Delivered : Factory applied primer and undercoat for site finishing.Weatherstripping :Contractor's choice.Fixing : Contractor's choice.

• Sealant To External Window Frames (L10)Manufacturer : Contractor's choice.Product Reference : -Type : Silicone, colour to be confirmed.Profile : As per drawings above.

• Insulating Glazing Units Bead Fixed With Solid Bedding (L40)Glass Manufacturer :Contractor's choice.Product Reference : Contractor's choice.Inner Pane : Contractor's choice.Outer Pane : Contractor's choice.Spacer : Contractor's choice.Low Permeability Inner Sealant : Contractor's choice.Vapour Permeable Outer Sealant : Contractor's choice.Beads : Window manufacturer's beads supplied loose for site fixing.Bead Location :Determined by frame profile.Bead Fixing : As window manufacturer's recommendations.

• Preparation For Staining And Varnishing New Wood (M60)Method : Fill all surface defects and abrade to a smooth even surface.

130 Existing Window Frames

Drawing Reference : 293-008, B32, 044 & 052Location : See Window Schedule for all windows and further details.

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• Refurbishing Wood Window (L10)Extent : Submit report.Ironmongery : Remove and make good frames. Where windows/stable doors are to be retained Principal Contractor to submit cost of making good, doors are to be fixed in an open position as indicated on thedrawings.Glazing : Remove existing glazing.Preparation : Submit report.Treatment : Submit costed proposals.Repair : Timber repair matched to existing, fixed with PVAC adhesive.

1.5.2 External Door

140 Existing DoorsDrawing Reference : 293-008, 046 & 049Location : Front Entrance Door

• Refixing External Door And New Frame (L20)Type : Remove existing door and make good and set aside for reuse.Fixing : Countersunk corrosion resistant woodscrews.

1.6 Internal Walls and Partitions

150 Timber Stud Partition With Plasterboard And Skim

Drawing Reference : 293-008 & C32Location :Wc/Wet Room & Linen

• Softwood Studding For Partitions (G20)Species : Contractor's choice.Size : As specified on drawing. Treatment : Not required.Stud Centres : 600 mm centres.Fixing : Framing anchors.

• Softwood Sole Plate To Stud Partition (G20)Species : Contractor's choice.Size : As studs. Treatment : Not required.Fixing : Framing anchors.Fixing Centres : 600 mm.

• Softwood Head Plate To Stud Partition (G20)Species : Contractor's choice.Size : As drawing. Treatment : Not required.Fasteners : Framing anchors.Fixing Centres : 600 mm.

• Softwood Noggings To Stud Partitions (G20)Species : As studs. Cross Section Size : 50 x 47 mm.Locations :Where required for bracing, appliances, sheet edges and the like.Fixing : Framing anchor.

• Framing Anchors (G20)Manufacturer : Contractor's choice.Product Reference : Contractor's choiceType : To suit connection.Material : Galvanized steel.Fasteners : 30 x 3.75 mm sherardized square twist nails.

• M20a Single Layer Plasterboard Backings Nail Fixed (M20A)Manufacturer : Contractor's choice.Plasterboard :Wallboard.Thickness : 12.5 mm.Edge Profile : Tapered.Fixing : Nail fixed as manufacturer's recommendations.

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• M20a Two Coat Board Finish Plaster (M20A)Manufacturer : Contractor's choice.Plaster : Two coat (undercoat plus finish) plaster system.Undercoat : Gypsum bonding plaster.Surface Preparation : Tape joints.Undercoat Thickness : 5 mm.Final Coat : Gypsum finish plaster.Final Coat Thickness : 2-3 mm applied in one coat.Finish : As manufacturer's recommendations.

• M20a Beads And Stops For Plaster (M20A)Manufacturer : Contractor's choice.Beads And Stops : Stainless steel.Position : All external angles and stop ends.

160 Ceramic Tiling Adhesive Bedded On Render To Internal WallDrawing Reference : 293-008 Location :Wc/Wet Room

• Preparing Wall For Tiling (M40)Initial Preparation : Purus Ltd or similar approved specialist contractor.Final Preparation : Apply bonding agent.

• Ceramic Tiling On Adhesive Bed To Internal Wall (M40)Manufacturer : Employer's choice.Type : Ceramic tiles, fully vitrified, water absorption less than 0.5%.Size : 100 x 100 mm.Thickness : 6.5-7 mm.Finish : Glazed.Colour : Employer's choice.Bedding : 3 mm ribbed thin bed adhesive.Joint Width : 2 mm.

• Sealant Movement Joint To Internal Wall Tiling (M40)Manufacturer : To be agreed Type : Type A low modulus silicone.Colour : Colour to be agreed.Backing Material : Contractor's choice.Bond Breaker Tape : As recommended by sealant manufacturer. Joint Width : 6 mm.Position : At internal corners.

• Grouting To Wall Tiling (M40)Manufacturer : Employer's choice.Type : Flexible polymer modified water and frost resistant cement base grout.Colour : Pigmented - colour to be agreed.Joint Profile : To approval.

1.7 Internal Doors

170 New Door Opening In Existing Internal Brick Solid Wall

Drawing Reference : 293-008 Location : Bedroom 1 & 2Masonry Opening Clear Finished Size : To suit specified door and frame.Reveals : Square; make good using brickwork set aside for reuse.

• Forming Opening In Existing Solid Clay Brickwork Internal Wall (F10)Thickness : 215 mm.Preparation : Cut plaster back to neat lines to both sides of wall before forming opening.Temporary Supports : Submit method statement detailing temporary support to structures over proposed opening during the work.Disposal : Clean and set aside whole bricks for reuse.

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• Proprietary Steel Lintel (F30)Manufacturer : Catnic Steel Lintel or similar approved manufacturer.Product Reference : As schedule. Type : As schedule. Size : As schedule. Length : As schedule.

• Forming Opening In Existing Solid Clay Brickwork Internal Wall (F10)Thickness : 215 mm.Preparation : Cut bricks back to neat lines to both sides of wall before forming opening.Temporary Supports : Submit method statement detailing temporary support to structures over proposed opening during the work.Disposal : Set aside for general reuse as fill.

• Support Steel BeamLocation : Existing wall between kitchen & Lounge/Dining.Product Reference : As specified by Structural Engineer.

180 Internal Frames

Drawing Reference : 293-008 & A32Location : See drawings above.

• Internal Softwood Door Frame Purpose Made (L20)Manufacturer : Jeld-Wen door sets or similar approved manufacturer.Type : As schedule. Overall Size : As schedule. Species : Manufacturer's recommendation.Appearance Class : J10.Section Sizes : As drawing. Joints :Contractor's choice.Adhesive : Manufacturer's standard.Glazing : Sidelights/ fanlight site glazed with manufacturer's standard units, glazing ref. ???.Finish As Delivered : Factory primed for site finishing.Fixing : Screw fixing and pelleting.

• Internal Wood Moulded Purposed made Panel Flush Door Leaf (L20)Manufacturer : Jeld-Wen or similar approved Product Reference :Manufacturer's recommendation.Type : Manufacturer's standard.Size : As schedule. Finish As Delivered :Manufacturer's standard.

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2 FINISHES

2.1 Wall Finishes

190 Wall finishesDrawing Reference : 293-008 & 044Location : See drawings for details.

2.2 Floor Finishes

200 Floor Finishes

Drawing Reference : 293-008 & 044Location : See drawings for details.

2.3 Ceiling Finishes

2.3.1 Finishes To Ceilings

210 Plasterboard Dry Lining To Ceilings

Drawing Reference : 293-044Location : Lounge/Dining, Kitchen, Bedroom 1 & 2

• Plasterboard Ceiling Dry Lining (K10)Manufacturer : Gypsum or similar approved manufacturer.Product Reference : Gypsum plasterboard or similar approved fixed directly to rafters (sloping ceiling).Type : Standard plasterboard.Recycled Content : Contractor's choice.Layers : One.Thickness : 12.5 mm.Edge Profile : Tapered.Fixing : Dry wall screws at 230 mm (maximum) centres.Joints : Taped and filled.Finish : Prepared for plaster skim coat.

• Emulsion Painting System (M60)Manufacturer : Contractor's choice.Product Range Reference : Employer's choice.Preparation : Prepare surfaces for decoration.Initial Coats : Thinned coat emulsion.Finishing Coats : Two coats vinyl matt emulsion.Colour : Employer's choice.

•Wc/Wet Room Plasterboard Ceiling Dry Lining (K10)Manufacturer : Gypsum or similar approved.Product Reference : Contractors choice.Type : Vapour control plasterboard.Recycled Content : Contractor's choice.Layers : One.Thickness : 12.5 mm.Edge Profile : Tapered.Fixing : Dry wall screws at 230 mm (maximum) centres.Joints : Taped and filled.Finish : Surface sealant, to contractor's choice.

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3 FITTINGS AND FURNISHINGS

3.1 Fittings, Fixtures and Furniture

220 Install Domestic Kitchen UnitsDrawing Reference : 293-008 Location : Kitchen

• Fitted Kitchen Unit (N11)Manufacturer : Howdens or similar approved manufacturer, units colour to be agreed.Product Reference : To be agreed.Type : Wall & high level units.Layout : As drawing. Material And Finish : Manufacturer's standard.Accessories : As drawing.

• Kitchen Unit Doors And Drawer Fronts (N11)Manufacturer : Manufacturer's Standard.Unit :Wall & high level units.Material And Finish : Manufacturer's standard.Door Hinges : Concealed.Catches :Magnetic.

• Kitchen Unit Side Panels (N11)Manufacturer : Manufacturer's Standard.Dimensions : As drawing. Material And Finish : Manufacturer's standard.

• Kitchen Unit Worktops (N11)Manufacturer : Manufacturer's Standard.Dimension : As drawing. Material And Finish : Manufacturer's standard.Supports : Manufacturer's standard end panels.Supports To Units Above Worktop :Manufacturer's standard.

• Domestic Sinks (N11)Manufacturer : Armitage Shanks or similar approved. Product Reference : Employer's choice.Type : Manufacturer's standard.Material : Stainless steel.Configuration :Manufacturer's standard.Overall Size :Manufacturer's standard.Tap Chainstay And Overflow Holes :Manufacturer's standard.Accessories : Manufacturer's standard.

• Domestic Sink Taps (N11)Manufacturer : Employer's choice.Type : Mixer tap; manufacturer Armitage Shanks or similar approved, product reference employer's choice.Material : Stainless steel.

• Domestic Sink Traps (N11)Manufacturer : Armitage Shanks or similar approved. Type : Manufacturer's standard.Material : Plastics, colour white.Size : D40

• Domestic Sink Wastes (N11)Manufacturer : Armitage Shanks or similar approved. Type : Manufacturer's standard.Material : Manufacturer's standard.Size : To fit sink

• Cooker t Hood (U90)Manufacturer : Greenwood Airvac or similar approved.Product Reference : Employer's choice, to meet current building regulations.Type : Manufacturer's standard.Material : Manufacturer's standard.

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4 SERVICES

4.1 Sanitary Appliances

230 Wash BasinDrawing Reference : 293-008 & A/B31

• Contractor Designed Water Supply System (S90)Design : Design and detail the water supply installation to BS 6700 or BS EN 806-2.

• Contractor Designed Above Ground Foul Drainage System (R11)Design : Complete the design of the above ground foul drainage system including selection of appropriatepreformed joints, junctions, fittings and fixings throughout. Proposals : Submit drawings, technical information, calculations and manufacturers' literature.

•Wash Basin (N13)Manufacturer : Armitage Shanks or similar approved Product Reference : Employer's choice.Type : Pedestal, vitreous china, size and colour to employer's choice.Waste :Manufacturer's standard.Trap : DN30, 75 mm seal bottle trap, chrome plated.Taps : Pair ½ inch pillar taps, chrome plated.

• Sealant For Sanitary Fittings (N13)Manufacturer : Contractor's choice.Type : High modulus one part silicone sealant, colour to match fittings.

• Copper Pipelines For Hot And Cold Water System (S90)Manufacturer : Contractor's choice.Product Reference : Kitemark certified.Size : Contractor's choice to suit system requirements.Connections To Appliances : Contractor's choice.Supports : Plastics spacers, single screw fixing.

• Flow Reducing And Servicing Valves For Hot And Cold Water System (S90)Manufacturer : Contractor's choice.Position : To water supply pipework connections to heat sources, cisterns and tanks on the hot and cold water system.Finish : Contractor's choice to match pipework.

• MUPVC Or PVCC Waste Pipework (R11)Manufacturer : Contractor's choice.Nominal Sizes :Manufacturer's standard.Colour : White where exposed to view.Brackets : Plastics pipe clips, colour to match pipes.Fasteners : As manufacturer's recommendations. Accessories : Access fittings. Testing : Test on completion.

240 WC

Drawing Reference : 293-008 & A/B31Location :Wc/Wet Room.

• Contractor Designed Water Supply System (S90)Design : Design and detail the water supply installation to BS 6700 or BS EN 806-2.

• Contractor Designed Above Ground Foul Drainage System (R11)Design : Complete the design of the above ground foul drainage system including selection of appropriatepreformed joints, junctions, fittings and fixings throughout. Proposals : Submit drawings, technical information, calculations and manufacturers' literature.

•WC Pan And Seat (N13)Manufacturer : Armitage Shanks or similar approved manufacturer. Product Reference : Employers choice.WC Pan : Back to wall, vitreous china, colour employer's choice.Flushing Arrangement : Manufacturer's standard.Seat And Cover : Employer's choice.Pan Connector : Type, contractor's choice to suit installation. Colour to be agreed with employer.

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•WC Cistern And Flushpipe (N13)Manufacturer : As WC pan. Product Reference : Employer's choice.Type : WC cistern, low level, vitreous china, colour to employer's choice. Flushpipe, colour to employerschoice.Capacity : Manufacturer's standard.Fittings : Float operated valve and plastics siphon fittings, internal overflow.Operation : Chrome plated lever handle, to be agreed.

• Sealant For Sanitary Fittings (N13)Manufacturer : Contractor's choice.Type : High modulus one part silicone sealant, colour to match fittings.

• Copper Pipelines For Hot And Cold Water System (S90)Manufacturer : Contractor's choice.Product Reference : Kitemark certified.Size : Contractor's choice to suit system requirements.Connections To Appliances : Contractor's choice.Supports : Plastics spacers, single screw fixing.

• Flow Reducing And Servicing Valves For Hot And Cold Water System (S90)Manufacturer : Contractor's choice.Position : To water supply pipework connections to heat sources, cisterns and tanks on the hot and cold water system.Finish : Contractor's choice to match pipework.

• PVCU Soil And Vent Pipework (R11)Manufacturer : Armitage Shanks or similar approved . Product Reference : Agrément certified. Coupling Type : Manufacturer's standard.Nominal Sizes :DN 110.Colour : Black.Brackets : Plastics pipe clips, colour to match pipes.Fasteners : As manufacturer's recommendations. Fastener Size : As manufacturer's recommendations. Accessories : Access fittings. Testing : Test on completion.

4.2 Water Installations

4.2.1 Mains Supply Within Building

250 Water Installation

Drawing Reference : 293-008 Location : As drawing.

• Contractor Designed Water Supply System (S90)Design : Complete the design and detailing of the water supply installation to BS 6700 or BS EN 806-2.

4.2.2 Hot Water Services

260 Hot Water Supply From Heating System Boiler

Drawing Reference : 293-008 & 009Location : Linen

•Water Supply System (S90)Design : Complete the design and detailing of the water supply installation to BS 6700 or BS EN 806-2.

• Copper Pipelines For Hot And Cold Water System (S90)Manufacturer : Dimplex or similar approved.Product Reference : Kitemark certified.Size : Contractor's choice to suit system requirements.Connections To Appliances : Contractor's choice.Supports : Plastics spacers, single screw fixing.

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• Pipeline Insulation For Hot And Cold Water System (S90)Manufacturer : Contractor's choice.Type : Preformed polyethylene foam, split tube.

• Flow Reducing And Servicing Valves For Hot And Cold Water System (S90)Manufacturer : Manufacturer's recommendation.Position : To water supply pipework connections to heat sources, cisterns and tanks on the hot and cold water system.Finish : Contractor's choice to match pipework.

4.3 Heat Source

270 Electrical Boiler Drawing Reference : 293-008 Location : Linen Cupboard Type : Aqualoy 2304 or similar approved boiler.

4.4 Space Heating

4.4.1 Water Central Heating

280 Unvented Hot Water Radiator SystemDrawing Reference : 293-008 & 009

• Contractor Designed Heating System (T90)Design : Complete the design and detailing of the heating installations to achieve the design parameters.

• Parameters To Contractor Designed Heating System (T90)Assumed External Air Temperature : -4°C.Basic Design Temperatures :Design the system to achieve domestic internal air temperatures set out inReference Specification.Thermal Insulation Of The Building Fabric :Assume area weighted U values given in Building Regulations (E&W) Approved Documents L1A, L1B, L2A or L2B as appropriate for building type.Design Flow Temperature : Submit proposals on which contractor's design is based.Difference Across Primary Heating Circuit :Submit proposals on which contractor's design is based.Difference Across Primary Hot Water Circuit :Submit proposals on which contractor's design is based.Water Velocity : Submit proposals on which contractor's design is based.Gravity Circulation : Gravity circulation must not occur in the heating circuit. Design the system accordingly or fit an antigravity valve.Heating System Capacity : Submit proposals on which contractor's design is based.

• Steel Panel Radiators (T90)Manufacturer : Employer's choice.Type : To suit heat output requirements.Size : Calculate to provide design temperatures.Finish : Manufacturer's standard.Position : As drawing, although indicative only final positions to be agreed on site. Foil Backing : Fix reflective foil to wall behind radiator.

• Pipeline Insulation For Heating System (T90)Manufacturer : Contractor's choice.Type : Contractor's choice.Thermal Conductivity : To current building regulations.Emissivity : To current building regulations.Thickness : To BS 5422 and in accordance with 'TIMSA guidance for achieving compliance with Part L of theBuilding Regulations', table 6.1.1.

• Thermostatic Radiator Valves (T90)Manufacturer : Employer's choice.Type : Contractor's choice, to suit system requirements.Mounting : Contractor's choice, to suit system requirements.Size : Contractor's choice, to suit system requirements.Finish : Chrome plated copper alloy.

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• Testing Low Temperature Hot Water Heating System (T90)Extent : Test and balance whole heating and hot/ cold water supply systems.

• Copper Pipeline For Heating System (T90)Manufacturer : Contractor's choice.Product Reference : Kitemark certified.Nominal Size : Contractor's choice to suit system requirements.Connections To Appliances : Compression fittings.Supports : Plastics spacers, single screw fixing.

4.5 Ventilating System

290 Extract Fan In Ceiling Venting Through Pitched Roof Drawing Reference : 293-008 & 044Location :Wc/Wet RoomContractor Design : Contractor design to electrical installation, as specified.Ventilation Fan Units And Controllers : As specified. Ventilation Grilles : As drawing 293-044. Ventilation Ductwork And Accessories : Submit proposals.Electrical Cable And Accessories :Submit proposals.Electrical Testing Commissioning And Documentation : As specified.

• Ventilation Fan Unit Ceiling Mounted (U90)Manufacturer : Greenwood Airvac or similar approved.Product Reference : CV100 or similar approved.Type : Extract fan assembly with flexible duct and external grille.Antibackdraught Shutter : Required.Adjustable Integral Overrun Timer : Required.Performance :Manufacturer's standard.Mounting : Ceiling, surface mounted.Control : Integral humidity sensor with pull-cord override.

• Ventilation Fan Controller Automatic Operation (U90)Manufacturer : As ventilation fan units. Type : Surface mounted single fan controller.Controls : Humidity sensor.

• Factory Insulated Flexible Ventilation Duct (U90)Manufacturer : Manufacturer's standard.Design : Complete the design and install ducting system including all necessary bends, junctions, adaptersetc.Type : PVC coated glass fibre with mineral fibre insulation on steel wire helix.Size : 100 mm diameter.Jointing : Manufacturer's joining pieces and worm drive clips.

• Condensation Trap To Ventilation Duct (U90)Manufacturer : Ventilation system manufacturer.Mounting Position : As manufacturer's recommendations. Drainage Outlet : Connect condensation trap through external wall with 22 mm PVC-U pipe laid to outward fall and projecting 100 mm beyond wall face.

• Inspection And Testing Of Electrical Installation (V90)Inspection And Testing Certification :Submit two copies of electrical installation certificate completed inaccordance with BS 7671.

• Documentation For Electrical Installation (V90)Contents : Full technical description.

• Commissioning Of Electrical System (V90)Requirements : Commissioning and completion testing required, beyond that described in the ReferenceSpecification

4.6 Electrical Installations

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4.6.1 Electric Source And Mains

300 Contractor Designed Electrical Power Installation

Drawing Reference : 293-009Contractor Design : Contractor design to electrical installation, as specified.Consumer Unit : Submit proposals.Cables : Submit proposals.Conduit And Trunking : Submit proposals.Accessories : Submit proposals.Electrical Testing Commissioning And Documentation : As specified.

• Contractor Designed Electrical Installation (V90)Design And Detailing Of Electrical Installation :The drawings show the outline design and layout of the maincomponents of the electrical system; complete the design in accordance with BS 7671. Also completedetailing, selection, installation and testing and commissioning of the electrical systems. Submit computer generated calculations showing types and sizes of devices, cables, and cpcs. Include rating factors, diversity,disconnection times and values of fault current and impedance.Design And Detailing Of Lighting Installation Generally : Submit layout drawings together with luminaire and lamp technical information indicating luminaire photometric data; maintenance factor calculations (showing proposals for luminaire maintenance and lamp replacement); computer generated point lighting calculations (showing calculated maintained average illuminance values and uniformity values); and isolux contour plotsfor the working plane.Design And Detailing Of Internal Lighting Installation :Design the general internal lighting installation inaccordance with CIBSE 'Code for lighting'.Design And Detailing Of External Lighting Installation :Design the external lighting installation in accordancewith CIBSE 'Code for lighting' and 'Lighting Guide 6'.Mains And Distribution : Cabling generally to be concealed. Exposed cabling or cables in concrete slabs incircular, black, heavy duty PVCU conduit.Arrangement Of Power Circuits : Separate circuits for kitchen, remainder of ground floor, cooker, immersionheater, external areas.Arrangement Of Lighting Circuits : Separate circuits for ground floor and external areas.Special Systems : Not required.Identification Of Underground Cables : To be confirmed.

• Inspection And Testing Of Electrical Installation (V90)Inspection And Testing Certification :Submit two copies of electrical installation certificate completed inaccordance with BS 7671.

• Commissioning Of Electrical System (V90)Requirements : Commissioning and completion testing required, beyond that described in the ReferenceSpecification.

• Documentation For Electrical Installation (V90)Contents : Full technical description required.

4.7 Communication Installations

310 Telephone/Broadband Installation

Drawing Reference : 293-009Location : Lounge/Dining

• Telephone & TelevisionManufacturer : Employer's choice.Product Reference : Employer's choice. All broadband and network/telecom installation to be as per approved Document Q of Building Regulations.

4.7.1 Warning Installations

320 Smoke Alarm

Location : Lounge/Dining Drawing Reference : 293-009

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• Smoke Alarm Domestic (W50)Manufacturer : Kidde or similar approved manufacturer.Location : As drawing. Type : Mains connected with battery backup to meet current Building Regulations.

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5 EXTERNAL WORKS

5.1 Site Works

5.1.1 Site Preparation

330 Site clearing

Drawing Reference : 293-008 Location : Courtyard and around building extent of work to be agreed with employer.

• Site Clearance (D20)Extent : Clear site of rubbish, debris and vegetation. Do not compact topsoil.Treatment Of Cleared Ground : Apply a suitable residual herbicide to areas to receive gravel surfacing. Disposal : Remove from site.

5.1.2 Surface Treatments

340 Pedestrian Areas With Asphalt Surface Course

Drawing Reference : 293-007 Location : Courtyard

• Excavation (D20)Extent : To be agreed on site.

• Granular Sub Base (Q20)Material : Highways Agency Type 1 unbound mixture.Minimum Thickness : 100 mm.Accuracy Of Sub Base : ±20 mm from required falls and cambers.

• Herbicide For Subgrade (Q20)Manufacturer : Contractor's choice.Type : Residual.Preparation : Grub-up vegetation.

• Mastertint Asphalt Finish To Pedestrian Route (Q22)Base : Hardcore, blinded.Base Compacted Thickness : 70-150 mm nominal, 55 mm minimum at any point.Binder Course : AC 20 dense bin, grade 40/60. Binder Compacted Thickness : As drawing. Surface Course : As drawing. Surface Compacted Thickness : 25 mm nominal.Reclaimed Content : Surface course maximum 10%, other courses maximum 50%.

5.1.3 Site Enclosure and Division

350 Securing Site

• Steel FencingInsert Name : Harras fence or similar approved.Manufacturer : Harras Fencing or similar approved manufacturer.Product Reference : Standard Note : Principal must make sure that site is secure at all times by installing adequate temporally metal fencing.

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5.2 Internal Drainage Works

360 Plastics Pipe Domestic Foul Drainage System

Drawing Reference : 293-A/B31Location : As drawing. General Bedding Class To Plastics Pipework :Class T - full depth granular support to 100 mm above pipecrown, single size or graded material.General Bedding Class Below Buildings :Class Y concrete surround below building when crown of pipewithin 300 mm of underside of floor slab and Class W concrete surround to 100 mm above pipe crown, singlesize material over when crown of pipe more than 300 mm from underside of floor slab.Granular Material : To BS EN 12620.Drainage Invert Levels : To work out onsite.Access Chamber Cover Levels : To work out onsite.

• Excavation (D20)Extent : To agree on site.

• Design Of Below Ground Drainage Systems (R12)Design : Complete the design and selection of junctions, bends and fittings to the below ground drainagesystem.General Arrangement : As drawing. Proposals : Submit drawings, technical information, calculations and manufacturers' literature relating to any design work carried out.

• Solid Wall PVCU Pipework For Below Ground Drainage Systems (R12)Manufacturer : Hepworth or similar approved.Product Reference : Kitemark certified.Recycled Content : Contractor's choice.Size : DN 110.Jointing : Polypropylene sleeve.

•Waste And Discharge Stack Connectors To Below Ground Drainage Systems (R12)Manufacturer : As drainage pipework. Product Reference : Contractor's choice.Type : As manufacturer's recommendations.

• Bends At Base Of Soil Stacks For Below Ground Drainage Systems (R12)Manufacturer : As drainage pipework. Product Reference : To be agreed.Nominal Diameter : As connected below ground drainage pipework. Type : Contractor's choice.Minimum Height Of Invert Of Horizontal Drain : 750 mm at base of stack below centreline of lowest branchpipe.

• One Piece Access Gullies And Covers For Below Ground Drainage Systems (R12)Manufacturer : As drainage pipework. Product Reference : Contractor's choice.Type : Vertical back inlet access gully.Material : Manufacturer's standard.Size : Manufacturer's standard.Outlet : DN 100.Cover : Manufacturer's standard.Bedding : Concrete (general), thickness 100 mm (minimum).Surround : Granular, size 4/10, minimum thickness 150 mm (minimum).

• Saddle Connectors For Below Ground Drainage Systems (R12)Manufacturer : As drainage pipework. Product Reference : Contractor's choice.Type : Contractor's choice.Inlet Size : To suit pipe being connected.Saddle Size : Contractor's choice.

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•Warning Marker Tapes For Below Ground Drainage Systems (R12)Manufacturer : Contractor's choice.Product Reference : Hepworth or similar approved.Type : Heavy gauge polyethylene.Location : To all new below ground drainage pipelines.Colour : Manufacturer's standard.Width :Manufacturer's standard.Text : Manufacturer's standard wording for each drain type.Wire Detection Aid :Required.

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Page 25

Page 24

Page 23

£Collection for Section 5 EXTERNAL WORKS

Date

For and on behalf of

Signed

Total £

5 EXTERNAL WORKS (page 23)

4 SERVICES (page 16)

3 FITTINGS AND FURNISHINGS (page 14)

2 FINISHES (page 12)

1 SUPERSTRUCTURE (page 5)

0 SUBSTRUCTURE (page 3)

Preliminaries

Tender Summary £

Unit 7 - College Farm, Keysoe, Bedford - Schedule of Work