Quelpr
3 marksSeasoning, Defects and Preservation

CSEC Industrial Technology · May/June 2017 · Paper 2 · Question 3(d)(ii)

On a building site, structural timber can be affected by distortion, vegetation growth, severe weather and poor air circulation.

Calculate the moisture content for a sample of wood which weighed 24.5 grams when wet and 18.6 grams when dried. (State the formula and show all working.)

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 3(a)State the difference between hardwoods and softwoods.[2 marks]
  2. 3(b)Name FOUR of the labelled parts A-F.[4 marks]
  3. 3(c)(i)Suggest TWO disadvantages of the quarter sawing method of conversion for producing lumber for the construction industry.[2 marks]
  4. 3(c)(ii)For the benefit of the lumber yard dealer, suggest ONE other method of timber conversion that is suitable for producing lumber for the construction industry.[1 mark]
  5. 3(c)(iii)Justify why the method of conversion stated in (c)(ii) is more suitable for producing lumber for the construction industry by listing TWO advantages and ONE…[3 marks]
  6. 3(d)(i)To avoid wastage of material, outline THREE steps that should be taken to store structural timber on a building site.[3 marks]

More practice: the rest of this paper · more Seasoning, Defects and Preservation questions · all CSEC Industrial Technology past papers