Let us assume a square gravity foundation block.
Tower Crane Foundation Design: A Practical Guide with Calculation Example tower crane foundation design calculation example link
We need a heavier or wider foundation. Let's increase the width to and keep the depth at 1.2 m . Let us assume a square gravity foundation block
Try a square pad: Length L = 5.0 m Thickness h = 1.2 m tower crane foundation design calculation example link