Timber House

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    TIMBER HOUSE

    Timber is one ofthe earliest materials

    Insects cause the decay of timber: beetles, marine borers, termites,res ants

    The seasonal temperature changes can cause movement and crack

    In the tropical invironment, the warm and damp weather can causefungi for example: blue stain, brown rot, dry rot, heart rot, sap stain,wet rot, white rot. So, most of the timber need to be dried and finishedbefore using. The wood which has less than 20% moisture, remains freeof fungi for centuries.

    The design and processes of technology need to take care of theproblems of the timber structure: protection from the moisture, insects,fungi and fire; the prevention of the interstitial condensation in the

    certain season Wood productions:

    Glued laminated timber (glulam)

    Laminated veneer lumber (LVL)

    Parallam and I-joists

    Chipboard, engineered wood, hardboard, medium-densityfibreboard (MDF)

    Oriented strand board (OBS)

    The density classifies the strength of wood:

    Soft wood from conifers: pine, cedar, yew, cedar, larch, etc

    Hard wood from dicotyledons: oak, alder, applewood, balsa,cherry, blackwood, butternut, dogwood, maple, walnut, willow,

    satinwood, rosewood, etc

    It has low shear strength and shear modulus.

    Wood is used in many different functions such as collumns, beams,foundations, exterior walls, interior walls, ceillings, floorings,insulations, furnishings, stairs, window frame.

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    Wood is a hygroscopic material, therefore wood is able to attractheat and moisture to itself. Wood is a heat insulator and equalizerfor indoor air.

    Timber frame is a structural support of timber house.The frame iscovered by high insulation. There are many forms of timber frame.

    There are over 70% of people in the developed countries living in timberframe housing and 90% of low-rise buildings in the USA and Canada aretimber house.

    Timber housing is suitable for a cold climate where homes need to be builtfast, be very energy efficient and keep people comfortable.

    Timber frame housing can cope with climate change and also be usedeffectively in hot and humid climates.

    Construction time of timber house is 30% shorter than brick and block. Returnon investment is faster, reduced disruption to local communities, saferand more efficient.

    Naturally timber is a strong and durable product. There is an 11 th century

    church in Essex thats the oldest building in the UK.Timber frames are provided with chemical and other treatments to protect

    against damp and pests.Fungi will attack timber that has a moisture content of more than 20%. This

    problem can be prevented by dry wood properly and by maintaining atimber properly with paints and preservatives.

    The avantages of timber frame house:

    Accuracy and quality are of the highest level.

    Building process is very simple.

    Supply chain integration and promotes greater efficiency.

    The construction process is controled better and estimate iscalculated more easily.

    Ensure the best regulations on construction

    Timber frame is processed to be able to fire protection andanti-termite better.

    Construction health and safety are improved;

    There are fewer defects and customer satisfaction is higher;

    Its the most environmentally friendly way to build.

    Cheaper price and faster construction time.

    Promote greater partnering, better control and project savings.Design process of timber house following steps:

    Establish floor plan. Timber frame design.

    Foundation plan approval.

    Panels design.

    Design finalization.

    Final plan package

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    The four-storey tiber frame house was built in the past 20 years, andthe first six-storey timber frame house were built more than 10years ago. Building regulations in England and Wales is changedin 1991 to allow buildings to be able to reach 8-storey .

    The resistance of burning timber house structure is achieved by a

    combination of timber, internal lining materials and insulation.Regulations on fire prevention required to ensure no spread of firenot only from inside but from outside as well, so timber housemust use fire preventiive chemical to cover materials of wall,floor and roof.

    The timber house structure of Vermonth Timbo Work: The timberframe is fastened to a 2x floor system, stress skin panels areattached to the frame, doors and windows are cut in and a coldroof system is incorporated into the roof.

    The Regulations on fire prevention:

    Make sure people can get out of a burning house safely viastairs, energency window etc.

    Limiting the spread of fire internally and externally.

    The ability of the structure of the burning house to stay intactlong enough for occupants to escape safely.

    Make sure parts of timber house do not get too hot.

    Fire extinguishers in places wheres easy to use when there isa fire problem.

    Timber house structure:

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    Truss Framing Profile

    http://www.vermonttimberworks.com/home/projects/chase/index.htmlhttp://www.vermonttimberworks.com/home/projects/westminister_presbyterian/images/WestminsterTruss.PDF
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    http://www.vermonttimberworks.com/home/commercial/trusses/index.html
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    Double Hammer Beam

    Reference:

    http://www.timberframe1.com/

    http://www.vermonttimberworks.com/park-and-ride-bus-shelter.html

    http://www.house-uk.co.uk/LogConstruction.htmhttp://www.woodenhousecompany.com/

    http://www.archdaily.com/7638/final-wooden-house-sou-fujimoto/

    http://www.timberframe1.com/http://www.vermonttimberworks.com/park-and-ride-bus-shelter.htmlhttp://www.vermonttimberworks.com/park-and-ride-bus-shelter.htmlhttp://www.house-uk.co.uk/LogConstruction.htmhttp://www.woodenhousecompany.com/http://www.archdaily.com/7638/final-wooden-house-sou-fujimoto/http://www.vermonttimberworks.com/home/projects/bethlehem_monastery/index.htmlhttp://www.timberframe1.com/http://www.vermonttimberworks.com/park-and-ride-bus-shelter.htmlhttp://www.vermonttimberworks.com/park-and-ride-bus-shelter.htmlhttp://www.house-uk.co.uk/LogConstruction.htmhttp://www.woodenhousecompany.com/http://www.archdaily.com/7638/final-wooden-house-sou-fujimoto/
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    http://upload.wikimedia.org/wikipedia/commons/c/c2/Post_and_Beam_Barn.JPG