Timber frame construction : designing for high performance

Timber frame construction, the acknowledged bible for timber frame, has been in demand consistently since its first edition in 1988. This 5th edition responds to further increases in thermal standards, evolving alternative methods of timber frame construction and the industry's migration from BS 5268 (now withdrawn) to Eurocode 5. Nearly all the illustrations have been revised. Timber frame construction is the definitive design guide for timber frame buildings Incorporates latest requirements for Part L and increased performance All drawings revised Guidance for both Eurocode 5 and BS 5268 now included Recommended by the UK Timber Frame Association For alternative forms of timber construction, please see the related book on Innovative timber in construction, also by the same authors, which includes SIPS, cross-laminated timber, engineered stud and twin stud methods. 1 Timber frame construction: An Overview 1.1 Methods of construction 1.2 Modem timber frame 1.3 Performance of tímber frame construction 1.3.1 Thermal performance 1.3.2 Fire performance 1.3.3 Sound insulation 1.3.4 Durability 1.4 Dimensional discipline 1.4.1 The structural grid 1.4.2 Vertical dimensions References 2 Foundations 2.1 Design requirements 2.2 Sequence and setting out 2.3 Strip foundations 2.4 Trench fill 2.5 Reinforced concrete ground beams 2.6 Concrete rafts 2.7 Gas-proof membranes 2.8 Sloping ground levei 2.9 Accessible thresholds 2.1 O Proximity to trees 2.11 Basements References 3 Ground floors 3.1 Design requirements 3.2 lntegration with the timber frame superstructure 3.3 Floor insulation 3.4 Concrete ground floors 3.4.1 Floating ground floor decks 3.5 Timber suspended ground floors 3.5.1 Timber joists 3.5.2 Decking for suspended timber floors References 4 Walls 4.1 Externai walls 4.1.1 Design requirements 4.1.2 Externai wall construction 4.2 Internai walls 4.2.1 Design requirements 4.2.2 Internai wall construction 4.3 Wall linings 4.3.1 Design requirements 4.3.2 Lining materiais 4.3.3 Framing and lining junctions 4.4 Alternative wall constructions 4.4.1 lnsulation 4.4.2 Structure 4.4.3 Fire performance 4.4.4 Cladding 4.5 Multi-storey construction References 5 Party Walls 5.1 Design requirements 5.2 Party walls for dwellings 5.2.1 Party wall construction 5.2.2 Structural stability 5.2.3 Fire resistance 5.2.4 Sound insulation 5.2.5 Proximity of windows 5.2.6 Thermal performance 5.2.7 Air-tightness 5.2.8 Junctions with other elements 5.2.9 Penetration of linings 5.2.1 O Steps and staggers 5.2.11 Specific requirements for separating walls in Scotland 5.3 Compartment walls for buildings other than dwellings 5.3.1 Compartment wall construction 5.3.2 Openings 5.3.3 Penetration of linings References 6 lntermediate floors 6.1 Design requirements 6.2 Design of intermedíate floors 6.3 Floor joists 6.3.1 Notching and drilling 6.3.2 Trimmers and beams 6.4 Supporting internai walls 6.5 Fire resístance 6.6 Acoustic performance 6. 7 Floor decks 6.8 Ceiling liníngs 6.9 Cantilevered floors References 7 Party floors 7.1 Design requirements 7.1.1 Fire resistance 7.1.2 Sound insulation 7 .1 . 3 Thermal performance 7 .1 .4 Structure 7 .2 Party floors for dwellings 7.2.1 Specified constructions 7.2.2 Structure 7.2.3 Fire performance 7.2.4 Sound insulation 7.2.5 Floor to wall junctions 7.3 Compartment floors where specific sound resistance is not required References 8 Roofs 8.1 Design requirements 8.2 Pitched roofs 8.2.1 Trussed rafter roofs 8.2.2 Attic trussed rafter roofs 8.2.3 Panei roofs 8.2.4 Site-constructed roofs 8.2.5 Constructional details 8.2.6 Covering for pitched roofs 8.3 Flat roofs 8.3.1 Cold deck roofs 8.3.2 Warm deck sandwich roofs 8.3.3 Warm deck inverted roofs 8.3.4 Materiais for flat roof construction 8.4 lnsulation in roofs 8.4.1 Ventilated pitched roofs 8.4.2 Room in the roof structures 8.4.3 Cold deck, warm deck and inverted flat roofs 8.5 Ventilation in roofs References 9 Cladding 9.1 Design requirements 9.2 Cladding materiais 9.3 Masonry cladding 9.4 Tile or slate cladding 9.5 Render cladding 9.5.1 Cement render cladding on masonry 9.5.2. Cement render cladding on paper-backed lath 9.5.3 Proprietary render systems 9.6 Brick slips 9.7 Metal sheet cladding 9.8 Timber cladding 9.8.1 Support battens 9.8.2 Cladding boards 9.8.3 Horizontal boards 9.8.4 Vertical boards 9.8.5 Durability 9.8.6 Species 9.8.7 Quality 9.8.8 Moisture movement 9.8.9 lnstallation and fixing 9.8.1 O Detail design 9.8.11 Finishes 9.8.12 Fire performance 9.8.13 Other wood-based claddings 9.9 Cavity barriers 9.1 O Junctions between self-supporting and attached cladding 9.11 Location and fixing of externai joinery References 10 Services 10.1 Design requirements 10.2 Notching and drilling framing members 10.3 Effect of differential movement on services 10.4 Drainage and plumbing installation 10.5 Electrical installation 10.5.1 Electricity meter boxes 10.6 Gas installations 10.6.1 Gas meter boxes 10.6.2 Gas installation pipework 10.6.3 Gas appliance installation 10.6.4 lnstallation of a room sealed appliance, for example a boiler 10.7 Chimneys 10.7.1 Chimneys on externai walls 10.7.2 Chimneys on internai walls 1O.7.3 Chimneys adjacent to party walls 10.7.4 Chimneys through party floors References Appendix 1 Timber and wood-based materiais A 1.1 Structural solid timber A1.1.1 Sizes A 1.1.2 Strength grading and strength classes A 1.2 Structural timber composites A 1.2.1 Glulam A 1.2.2 Laminated veneer lumber A 1.2.3 Parallel strand lumber A 1.2.4 Laminated strand lumber A 1.2.5 Cross laminated timber A 1.2.6 Engineered beam or joist components A 1.2. 7 Engineered panei components A 1.3 Wood-based panei products A 1.3.1 Performance characteristics A 1.3.2 Oriented strand board A 1.3.3 Plywood A 1.3.4 Fibreboards A 1.3.5 Particleboard - wood chipboard A 1.3.6 Cement-bonded particleboards A 1.4 Moisture content A 1.4.1 Measuring moisture content A 1.5 Preservative treatment A 1.6 Gare of timber and components References Appendix 2 Materiais data A2.1 Densities and weights of materiais A2.2 Vapour resistivity and vapour resistance values A2.3 Thermal conductivity of materiais References 229 Appendix 3 Supervisor's checklist 233 A3.1 Work typically undertaken by groundworks contractor A3.2 Work typically undertaken by timber frame provider/timber frame erection crew A3.3 Work typically undertaken by other subcontractors