borediameter = Internal Diameter of the Borehole (inch)
Pipediameter = Outside Diameter of the Product Pipe (inch)
𝑆𝑒𝑡𝑡𝑙𝑒𝑚𝑒𝑛𝑡𝑣𝑜𝑙𝑢𝑚𝑒 = 𝑎𝑛𝑛𝑢𝑙𝑢𝑠𝑣𝑜𝑙𝑢𝑚𝑒 • 𝑉𝑜𝑙𝑢𝑚𝑒𝑓𝑎𝑐𝑡𝑜𝑟
Volumefactor = Volume Correction Factor
depthborecrown = Depth of Borehole above Crown of the Bore (ft)
θsoil = Internal Friction Angle of Soil (degree)