for a square footing, i know the shape factors are not always the same but i saw one which is very different when i was solving a question for PE preparation. for example, in the formula I have, there are shape factors of 1.3 for c, 1 for q and 0.4 for gamma.

but on a question i saw, i saw that for q they have 1.625, and for gamma they have 0.6 x 1/2 = 0.3.

so the one i have is correct, or the second set i wrote?

the second set of factors are calculated as:

shape factor for q = 1+B/L Tan teta and

shape factor for gamma = 1 - 0.4 (B/L)