Plumbers NZ | Plumbing, Gasfitting and Drainage Community

Support => exam support and downloads => Plumbing, Gas fitting and Drainlaying Apprentice Support => Drainlaying Exam June 2007 => Topic started by: LisaS on March 30, 2009, 08:56:37 PM

Plumbers NZ is New Zealand's largest online plumbing, gas and drainage resource. Plumbing exam help, plumbing news, directory and free quotes.

Title: Question 6
Post by: LisaS on March 30, 2009, 08:56:37 PM

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