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material quantity help

C

Cjbamf

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19 Apr 2022
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I have dug a trench and I am going to put 9" deep footings that are 415mm wide and 14.5m long. Can someone help with how much ballast and cement required?
What ratio ballast to cement for a 600mm high retaining wall would be ok?
 
thanks, do you think the 9" depth is ok or over kill?? at the 9" depth i will have 2 courses of block laid flat below ground level
 

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