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Title: Question 1
Post by: LisaS on March 13, 2009, 01:20:50 PM

QUESTION 1
(a)   Describe FOUR methods of preventing the collapse of a trench.
 1
 
 2
 
 3
 
 4
 
(2 marks)

(b)   State TWO precautions which should be taken to ensure members of the public do not fall
into an excavated trench at night-time.
 1
 
 2
 
(1 mark)

(c)   Water supply installations may require earth (equipotential) bonding to be provided.
Give THREE situations where this is required.
 1
 
 2
 
 3
 
 
(3 marks)
Total 6 marks