$e = \frac1,8001,968 = 0.914 \text m$. Check Kern: $B/6 = 0.917 \text m$. (Still just inside).
q_max = (2 × V) / [3 × L × (B/2 – e)] = (2 × 1,600) / [3 × 5 × (2.5 – 2.135)] = 3,200 / [15 × 0.365] = 3,200 / 5.475 ≈
Tower Crane Footing Structural Design For All Cranes PDF - Scribd tower crane foundation design calculation example link
To prevent the foundation from lifting off the ground, keep the eccentricity within the middle third of the base ( Calculate the maximum and minimum soil bearing pressures (
👉 (Link placeholder – replace with your actual download link or email gate) $e = \frac1,8001,968 = 0
Crane Manufacturer Data (Worst-Case Out-of-Service Conditions) Overturning Moment ( Mccap M sub c ): Horizontal Shear Force ( Vccap V sub c ): Mast Anchor Footprint: Geotechnical & Material Data Allowable Soil Bearing Capacity ( qallq sub a l l end-sub ): Concrete Compressive Strength ( ): Reinforcement Yield Strength ( ): Soil Unit Weight ( γsoilgamma sub s o i l end-sub ): Concrete Unit Weight ( γconcgamma sub c o n c end-sub ): Initial Trial Foundation Dimensions Width ( ) & Length ( ): Thickness ( ): Depth of Embedment ( Dfcap D sub f ): (Top of footing flush with ground level) Step 2.2: Compute Total Weights and Overturning Forces
The example shows that a reinforced concrete pad is adequate for the given crane on dense sand with 150 kPa bearing capacity. q_max = (2 × V) / [3 ×
Area = (Crane weight + Load weight) / Soil bearing capacity
To ensure the mast of the crane does not "punch" through the concrete footing. Industry Standards and Best Practices