Calculation Example Link: Tower Crane Foundation Design

The design calculation process involves the following steps:

Area = (Crane weight + Load weight) / Soil bearing capacity

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q_max = (V_total / A) + (M / Z)

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 design calculation process involves the following steps:

When shallow foundations are not feasible, engineers turn to . For a typical four-pile arrangement:

is strictly less than the soil's allowable bearing capacity ( qallq sub a l l end-sub For a typical four-pile arrangement: is strictly less

| 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 |