"/>Tower Crane Foundation Design Calculation Example Link [work] File
As = M_Ed / (0.87 × fy × z) Assume z = 0.9d, d = 1.5m - 0.075m cover = 1.425 m. As = 744 × 10^6 / (0.87 × 500 × 0.9 × 1425) As ≈ 1,334 mm²/m.
$0.933 \text m > 0.833 \text m$ FAIL. The eccentricity is outside the middle third. This implies part of the foundation is lifting off the ground (tension), which is unacceptable for a gravity base on soil. tower crane foundation design calculation example link
Let’s design a reinforced concrete pad foundation for a class tower crane. As = M_Ed / (0
The soil pressure acts upwards. The self-weight acts downwards. Conservative design assumes the maximum ground pressure acts across the cantilever tip. 334 mm²/m. $0.933 \text m >