Timber, for building

last updated : 2011/01/01
Code Description Ind. price Ship. weight Ship. vol.
EBUIWOODPW16
WOOD PLANK, weather board 21x150mm (13/16"x 6"), L: 4.2m CH 28,00 0kg 0 Add
EBUIWOODT204
WOOD BEAM, cypress 50 x 100mm (2"x 4"), L: 4m CH 630,00 0kg 0 Add

General information

These items are only few examples of wood material we may use.

Purchase of large quantities is under special regulations from ministry of natural resources or equivalent. Export may be forbidden or regulated. Check before purchasing large quantities.

Wood should be dried naturally or in kilns before use, a visit to the factory can be a good indicator.

Protection against termites is extremely important in wood building, it can be achieved with impregnation of waste engine oil mixed with diesel or specific insecticides products.

Treatment with Chromated Copper Arsenate (CCA) and with Creosote are highly toxic, often banned and not recommended for residential use other than foundations.

Choose the type of wood and wood-boards according the type of use: indoor or outdoor.

One should check if wood reserves are properly managed (and if alternative materials could help in preserving forests). The following institutions and organisations are specialised in forest management and preservation:

  1. -      CITES Convention on International Trade in Endangered Species of Wild Fauna and Flora
  2. -      ITTA International Tropical Timber Agreement
  3. -      FSC Forest Stewardship Council www.fsc.org      
  4. -      PEFC Programme for the Endorsement of Forest Certification www.pefc.org       
  5. -      SFI The Sustainable Forest Initiative www.aboutsfi.org
  6. -      CSA Canadian Standards Association www.csa.ca
  7. -      MTCC Malaysian Timber Certification Council www.mtcc.com.my

More information in the book "Timber", available for download from:

www.humanitariantimber.org

 

Wood as fuel: Still the most commonly used fuel in the world for cooking and heating. See our fuel saving stoves and heaters (item code HHEASTOHWÂ…). Also keep in mind that traditionally processed charcoal retains only 20% of the original fuel content of the wood.

Specifications

 

Variety

As per stated in contract.

Dimensions

As per stated sizes and total volume required.

Tolerance

Maximum 5mm of in width and height.

 

Usable length to be minimum as stated in contract, longer by 50 to 100mm is recommended.

Seasoning

Dried to 20% maximum moisture content (Specify drying method and time).

Treatment

Treated against insects and termite in particular. Treated against mould.

Grade

Class I, II, III, IV, as per contract.

 

International suppliers will supply to international standard construction grades.

Serious damage to outer fibres caused by poor storage, transporting, etc. will result in rejection of the goods.

 

 

If timber must be visually graded:

Decay

Timber is free from pests and rot

Sloping grain

1 in 8

Knots, sound

1/3 dimension of face, max 10cm diameter. 1 per meter in length

Knots, unsound

1/4 dimension of face, max 7cm diameter. 1 per 3 meter in length

Wane, want and sapwood

1/3 sum of width and thickness

Split

Longest split, 100mm at each end

Shake

1/2 thickness

Compression failure

None

Warp

Bow, Cup, Spring and Twist: 1 cm in 3m

Sweep/crook

Pole does not deviate from middle axis

Taper

Not exceed 10mm per meter for poles

Spiral grain

No from 'twisted' trees

 

Delivery (C.8)

 

Required Documentation

Supplier

Local

National

International

Certificate of legality from national government

YES

YES

YES

Guarantee that no timber from the CITES list

YES

YES

YES

Timber travel document

YES

YES

YES

Sawmill license

YES

YES

YES

Proof of sustainability

Preferable

YES

YES

Phytosanitary certificate            

NO

YES

YES

Customs clearance documentation

NO

NO

YES

Documents relating to other national law

Preferable

YES

YES

Description of harvesting/logging process

YES

YES

YES

Description of seasoning and treatments used.

YES

YES

YES

Certification of quality by a national or international grading system.

Preferable

YES

YES

 

 

 

 

Phytosanitary certificate checklist

Details of packing

Botanical names of tree species and whether wood is softwood or hardwood

Country where tree came from

Serial numbers of phytosanitary certificates issued in the country of origin (import if timber is re-exported)

Dimensions / weight of packaging articles plus volume of wood in cubic metres

Name / number of boat or plane

Wood treatment type (e.g. Chemical Pressure Impregnation)

Name of chemical used

Duration of treatment applied for effective treatment

Dosage rate of chemical (number of grams per cubic meter)

Date of treatment

 

TREATMENT OF TIMBER:

The treatment should comply with safe, acceptable standards against insect, especially termite, and fungal attack, to the required Hazard level as per contract. Treatment to comply with any applicable health and safety standards. In addition, the supplier must guarantee in writing that the treatment is completely fit for its purpose i.e. it is safe for humans (adults, and children of all ages) in circumstances where the treatment will be used internally (including in bedrooms / sleeping areas), with possible prolonged direct skin contact with the wood, over a period of many years.

All treatments to be certified by third party audit scheme such as AgriQuality treatment programme or equivalent.

Supplier to specify name of treatment chemical and registration certification with parameters of penetration and retention as per applicable standards.