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This is the link to the rest of the table:
http://i.imgur.com/JtJRIww.jpg
I'm a new land surveyor. How do find the formulas for this table?
i.imgur.com
This is the link to the rest of the table:
The table is figuring a cross sectional area then adding the next cross section area. At that stage it should divide by 2 to find the 'average' area for a section but it waits until the end to do this by dividing by 54 (or double the cubic feet in a cubic yard).
A1 = H1 x W1 A2 = H2 x W2 (A1 + A2) x L1 = 2V1 (approximate) A3 = H3 x W3 (A2 + A3) x L2 = 2V2 ... sum of volumes = 2V approximate volume = 2V / 54 = approximate cubic yards.
No you would not multiply the total cubic feet by 2 and divide by 54 to find the total cubic yards. If you multiply by 2 then you will throw your calculations off. The table is figuring a cross sectional area then adding the next cross section area. At that stage it should divide by 2 to find the 'average' area for a section but it waits until the end to do this by dividing by 54 (or double the cubic feet in a cubic…
