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PREFABRICATED TIMBER FRAMING SYSTEM
- 1. BLD 60304 CONSTRUCTION TECHNOLOGY 3 GROUPMEMBERS: • Farah Aida Sham • Lin Hui • Koh Eee Sing
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- 3. INTRODUCTION OF TIMBERFRAME • Structures that carry the loads through their beams and girders to column and to the ground. • Form a skeletal structure to support the weight and the number of load carrying member. • To transfer heavy loads over large spans. • Normally used to build bridges, warehouse, parking loads, industrial building and sport facilities and so on.
- 4. PREFABRICATED TIMBER FRAMINGSYSTEM • Prefabrication is the practice of assembling components of a structure in a factory. • Complete Frame will be transport to the construction site • These completed frame will be lifted into place by a crane and bolted together
- 5. CLASSIFICATION OF TIMBER TIMBER GROUP STRENGTH GROUP A EXTREMELY STRONG GROUP B VERY STRONG GROUP C STRONG GROUP D WEAK • Only timber from Group A and Group B can be used as prefabricated timber framing system as timbers from other groups are not strong enough.
- 6. EXAMPLES OF TIMBERFROM GROUP A & B Bakau Cengal Kekatong Keranji Resak
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- 8. PROBLEMS WITH UNPRESERVEDTIMBER • Wood Rot • Weather • Water/ Dampness • Termites • Fungal AIack
- 9. TIMBER PRESERVATION Water Borne PreservaLves -‐Causes swelling -‐Made from mixture of salt and water -‐Water evaporates leaving toxic salts as preservaLves -‐Pressure impregnated -‐Indoor use -‐ Leaves a dry, clean, paintable surface. -‐Suitable for ResidenLal use -‐Borate -‐Copper Chrome Arsenic (CCA) -‐AlternaLves to (CCA) Copper Azules (CuAz) & Alkaline Copper Quaternary (ACQ) Oil-‐Borne PreservaLves -‐Pressure impregnated -‐Odor -‐No indoor use -‐Highly water repellent -‐Heavy duty wood preservaLve -‐Commercial use only. -‐Creosote (commercial use only) -‐Pentachlorophenol Light Organic Solvent PreservaLves -‐Uses white spirits/ kerosene as solvent carrier -‐No dimension distorLon -‐Suitable for indoor and outdoor -‐The wood is not discolored. -‐Smooth finish. -‐Tributhylene Naphtenate with Permethrin (TBTN-‐P) -‐Azole-‐Permethrin
- 10. CONNECTION SYSTEMS The Résix® System of the SIMONIN Company is a totally invisible and high performance assembling process having a higher resistance factor than tradiLonal bolt-‐in-‐place construcLon.
- 11. CONNECTION SYSTEMS This system uses 3 elements: • Glued laminated (GLULAM) wood • High performance epoxy resin • Threaded steel bars. Mechanical Fasteners: • Nails • Dowels • Screws • Bolts • Coach-‐screws • Toothed ring connectors • Split rings • Nail plates • Proprietary or patented fasteners.
- 12. MANUFACTURING PROCESS 1. HarvesDng the wood -‐HarvesLng the wood from the tree 2. Kiln Drying -‐This process is to control the moisture of the wood 3. LaminaDng -‐A Process to improve the strength and stability of the wood 4. Milling -‐Cu`ng the wood sizes into a desire size -‐This process turn woods into Lmber. 5. Joint the each Part Together -‐Joint the part of the Lmber to form a frame 6. Shipping -‐Aber the frame is complete it will be ship to construcLon sites
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- 15. Completed: August 2015 Location:Stockport, Manchester Country: England Sector: Education / School Architect: Sarah Wigglesworth Architects Engineer: Rhodes and Partners Main con: MPS Construction Area: 226 sqm Cost: £0.59M Mellor Primary School ‘Forest School’
- 16. • Pre-fabricated insulatedtimber wall cassettes were manufactured off site -could be lifted into place to form the roof and walls. • Glulam superstructure – erected in four days; Timber cassettes installed within ten days
- 17. Types of PrefabricatedTimber 1. Glulam – Glued Laminated Timber • Timber frame structure – beam & column • Also support the deck & roof • Main component in the extension – to support whole building
- 18. 2. Canadian Westernred cedar • Western red cedar is versatile timber, commonly used for applications such as cladding, windows • Used in shingle cladding (in the project) –act as bale insulation Shingle cladding Types of Prefabricated Timber
- 19. CONSTRUCTION PROCESS 1. Glulamframe erected on foundation 2. Erected the floor platform 3. Erected the flooring 4. Erect the vertical walls
- 20. 7. Final –Timber cladding 5. Erect the roof elements 6. Place the roof tiles
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- 22. GlaxoSmithKline’s Carbon NeutralLaboratory Completed: September 2016 Location: University of Nottingham’s Jubilee Campus Country: England Type: Education Architect: Fairhursts Design Group Main contractor: Morgan Sindall Area: 4,500 sqm Costing: £15.8m
- 23. GSK Carbon NeutralLaboratory • A two-storey, engineered timber structure - 22m tall • Known as UK’s first carbon neutral laboratory – ‘’Green Building Lab’’ • Achieved a LEED Platinum certification & BREEAM Excellent • built from natural materials – timber & energy used from renewable sources, such as solar power and sustainable biofuel • to serve as a hub to catalyse new collaborations in pharmaceutical industry
- 24. 1. Glulam (GluedLaminated Timber) • structural engineered wood - bonded together with durable, moisture-resistant structural adhesives. • Used in Timber frame structure (beam & column) • Largest glulam beams spanned 8m, 1.8 tonnes Types of Prefabricated Timber
- 25. 2. Cross-laminated Timber • engineered wood building system designed to complement light- and heavy- timber framing options. • Used for structural walls, floors, roofing and cladding • Allows the structure to be adaptable Types of Prefabricated Timber
- 26. CONSTRUCTION PROCESS 1. Materialsdelivered to the site 2. Erect the ground floor platform over the foundation 3. Build beam and column 4. Next, build the floor platform 5. Then, erect the vertical walls and roofs 6. Repeat the steps again.
- 27. GlaxoSmithKline Carbon NeutralLaboratory Construction Process (Time-Lapse)
- 28. • Burn downin September 2014, when nearly two-thirds (70%) complete • Cause by a fire started by an electrical fault at ground floor • The entire site were burned to the ground • No blame was attached to the building process and construction firm - Morgan Sindall This photo was taken hours before the fire ravaged the building. CHALLENGES:
- 29. SOLUTIONS • Decided torebuilt it using exactly the same design • Rebuilt in 2015 • Fire protection system added after the incident happened
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- 31. ADVANTAGES AND DISADVANTAGESOF PREFABRICATED TIMBER FRAMING SYSTEM ADVANTAGES DISADVANTAGES Simple and easy to be construct Poor Sound InsulaLon Not weather dependent ,can build at any Lme without any weather delay TransportaLon to site could be a problem Quality Assurance Shorter fire raLng Reduce Material Wastages Biological AIack
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- 33. Timber is specifiedas a robust and sustainable material, offering clear benefits in terms of ecological sustainability, structural performance, durability, and long-term maintenance. Therefore, it is widely used as main structural components in England/UK. We hope that our country can also widely promote the use of timber in building construction.