QUESTION 6
(a)  Calculate the amount of material required to fill a trench having the following dimensions; 
130 m long x 0.600 m wide with a depth of 0.820 m at the top end of the trench and
1.650 m at the bottom end.
 Your answer should include an allowance of 25% for compaction.
 Show all workings.
 
 
 
 
 
 
 
 
(5 marks)
(b)  A trench 65 m long and 650 mm wide requires an extra 100 mm under the drain for base
course. Calculate the amount of base course required, allowing 30% extra for compaction. 
Show all workings.
 
 
 
 
 
 
 
 
(3 marks)
Total 8 marks

Linkback: https://www.plumbers.nz/drainlaying-exam-june-2007/28/question-6/199/