In one on my previous study books In determining a total length of conduit run,it makes reference to a table listing typical gains and take ups for 90 degree ends, these gains and take ups are used to cut the conduit to the corrrect lenght I assume to save on buying to much conduit, however the book does not mention where this table is located in the NEC code book,I was wondering if any one knows of a table that has these gain and take up values, or even if there is such a table or even if such a table is of any use ?