This construction video provides step-by-step instructions on how to measure excavation and backfill concerning trenches.
Trench stands for an extended excavation that is separated from pits or basements. A footing is a good instance of the trench.
In order to find out the volume of excavation for a simple footing, the following formula is used :-
CL x W x D = Cu.Ft. of Excavation
If you want to change to cubic yards, divide the results by 27
It becomes very difficult while going to make calculation for a trench that includes working spaces and sloped sides. The following formula is used for this purpose.
CL x AD x AW = Cu.Ft. of Excavation