Using (Conservative approach):
Additional standards references:
The foundation acts as a counterweight. Its primary job is to ensure that the combined center of gravity of the crane, the load, and the foundation remains safely within the foundation's "kern" (the middle third of the base) to prevent overturning and minimize ground bearing pressure. tower crane foundation design calculation example link
Resisting moment from self-weight about the toe: tower crane foundation design calculation example link
- The industry-standard UK guidance for foundation and tie design. Structural World Design Criteria tower crane foundation design calculation example link