Disclaimer: This example is for educational purposes. Always refer to local codes and manufacturer-certified designs for construction.
To ensure the mast of the crane does not "punch" through the concrete footing. Industry Standards and Best Practices
For practical example: Assume maximum factored pressure = 196 × 1.5 = 294 kPa (ULS). Overhang = 2.25 m. M_Ed per meter width = (294 × 2.25²) / 2 = 744 kNm/m.
$$e_limit = \fracB6 = \frac5.06 = 0.833 \text m$$ tower crane foundation design calculation example link
Since the resisting moment is greater than the overturning moment, the foundation is stable against overturning.
Where:
for temporary works). If this fails, the foundation size must be increased. Disclaimer: This example is for educational purposes
Tower cranes are the backbone of high-rise construction, but their safety depends entirely on a rock-solid base. Designing a tower crane foundation is a precise engineering task that balances massive vertical loads with the constant threat of overturning moments from wind and operation.
Step 3 — Compute foundation width
qmax=2×2,328.753×6.5×(3.25−1.875)=4,657.519.5×1.375=4,657.526.8125=173.7 kN/m2q sub m a x end-sub equals the fraction with numerator 2 cross 2 comma 328.75 and denominator 3 cross 6.5 cross open paren 3.25 minus 1.875 close paren end-fraction equals the fraction with numerator 4 comma 657.5 and denominator 19.5 cross 1.375 end-fraction equals the fraction with numerator 4 comma 657.5 and denominator 26.8125 end-fraction equals 173.7 kN/m squared The maximum soil pressure ( ) is lower than the allowable soil bearing capacity ( ). The design passes the soil capacity check. Step 2.5: Structural Concrete Design (Flexure and Shear) Industry Standards and Best Practices For practical example:
): The self-weight of the tower crane, counterweights, and the foundation itself. The maximum weight of the materials being hoisted. Wind Loads (
For a that is fully editable and includes all design tables, visit the Liebherr Foundation Software or download the “Crane Foundation Engineering Guide” from Peiner / Manitowoc. Always have a chartered engineer review your final design.
3. Tower Crane Foundation Design Calculation Link & Resources