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3 marksTree Anatomy, Properties and Processing

CSEC Industrial Technology · May/June 2017 · Paper 2 · Question 3(c)(iii)

A lumber yard dealer plans to convert a supply of logs into suitable lumber for building contractors. He was advised to use the quarter sawing method of conversion.

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 disadvantage of that method.

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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(d)(i)To avoid wastage of material, outline THREE steps that should be taken to store structural timber on a building site.[3 marks]
  6. 3(d)(ii)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.)[3 marks]

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