Temporary steel structures anchored to the ground or the building's permanent structure.
| Risk | Explanation | |------|-------------| | | Tower cranes have significant sway & vibration – many XLS treat loads as static. | | No wind & eccentricity combination | Wind from different directions changes moment distribution; XLS must check multiple load cases. | | Soil-structure interaction missing | Bearing pressure assumes rigid footing; large footings need subgrade modulus (Winkler). | | No uplift on piles | Many spreadsheets fail to check tension pile capacity. | | Anchor bolt group nonlinearity | Simple linear bolt force distribution is wrong for stiff anchor plates. | | Code version lock | Old XLS may use superseded safety factors (e.g., no partial factors from Eurocode 7). | Tower Crane Foundation Design Xls
Tabulated formulas make it easy for third-party checkers or municipal authorities to review the calculations. ⚠️ Limitations and Best Practices Temporary steel structures anchored to the ground or
Calculate the required area of steel ( Ascap A sub s | | Soil-structure interaction missing | Bearing pressure
IF(FOS_Overturning >= 1.5, "PASS", "FAIL") (Note: Some regional codes require a factor of 2.0). C. Safety Factor Against Sliding