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TIMBER

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TIMBER

PROPERTIES
- HARDNESS
  - FRAGILITY
    - DUCTILITY
      - FLEXIBILITY/PLASTICITY
        POROSITY/PERMEABILITY
        DENSITY
        CONDUCTIVITY
        DURABILITY/LIFESPAN
        REUSABILITY/RECYCLABILITY
        SUSTAINABILITY/CARBON FOOTPRINT
        COST
        effective, labour dependent for on site work
        very low embodied energy
        very high
        can very durable, type seasoning finishing fixing dependent
        poor conductor of heat & electricity
        timber type dependent
        high seasoning & finishing dependent
        high flexibility medium plasticity
      - medium-low geometry dependent
    - medium-low can be easily marked
  - type dependent
SPECIFYING & HANDLING
- SIZE
  - STRENGTH GRADE
    - MOISTURE CONTENT
      - SPECIES OF WOOD
        AVAILABILITY
        TREATMENT
        KNOTS
        DURABILITY
        PROTECTION
        against water
        -avoid exposure, -seal(paint), -particular care for end grain
        insect attack
        chemical/physical barriers
        sunlight &heat
        direct sunlight :break down wood/cellulose
        light color paint
        OTHER HAZARDS
        fire, chemical exposure
        water related damage, fungal attack(moisture >20%), swelling shrinkage(cracks)
        weak points, cause slope of grain
        at the top of beams- compression
        treatment or insect repellent treatments
        limitation
        provide different performance & appearance
      - seasoned: <15%
    - F-GRADE & MGP GRADINGS
  - depth x breadth
    - choose the available size before specifying
      - length

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Description: Mind Map on TIMBER, created by ziyiy on 28/04/2014.
Created by: ziyiy
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TIMBER

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