A large, heavy reinforced concrete block poured on the ground. It relies on its own dead weight to prevent overturning.
| Parameter | Value | Source | |-----------|-------|--------| | Crane model | Potain MD 235 | Manufacturer datasheet | | Max vertical load (unfactored) | 850 kN | Crane manual | | Max overturning moment (unfactored) | 3,200 kNm | Crane manual | | Horizontal shear (unfactored) | 180 kN | Crane manual | | Concrete grade | C30/37 (fck = 30 MPa) | Structural spec | | Steel reinforcement | B500B (fy = 500 MPa) | Structural spec | | Allowable soil bearing pressure | 150 kN/m² | Geotech report | | Soil type | Dense sand, φ = 35° | Geotech report | | Safety factor (bearing) | 2.5 (serviceability) | Local code |
Verify the concrete thickness is sufficient to prevent the crane legs from "punching" through the slab. 3. Critical Design Considerations tower crane foundation design calculation example link
The or the manufacturer's overturning moment values Your project's allowable soil bearing capacity
Obtain the manufacturer's technical data sheet (the "Crane Manual"). This provides the specific "Corner Loads" or "Reactions" for the crane model in both "In-Service" and "Out-of-Service" conditions. A large, heavy reinforced concrete block poured on
Z=B×L26=6.5×6.526=45.77 m3cap Z equals the fraction with numerator cap B cross cap L squared and denominator 6 end-fraction equals the fraction with numerator 6.5 cross 6.5 squared and denominator 6 end-fraction equals 45.77 m cubed Total Moment at Base ( Mbasecap M sub b a s e end-sub
The (Isolated pad or Piled foundation)
Comprehensive Guide to Tower Crane Foundation Design and Calculations
Tower Crane Foundation Design: Calculations and Principles Tower cranes are essential for modern high-rise construction. Their stability depends entirely on a well-designed foundation. A failure in the foundation can lead to catastrophic structural collapse. Z=B×L26=6
Check out ExcelCalcs , a repository of peer-reviewed engineering spreadsheets that features dedicated templates for crane foundations using global codes.