| 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 | | Code version lock | Old XLS may use superseded safety factors (e.g., no partial factors from Eurocode 7). |
The spreadsheet checks if the ground can support the crane. Assuming an eccentric load, the pressure distribution is calculated: Tower Crane Foundation Design Xls
For structural engineers who want control, build a modular XLS using: | Risk | Explanation | |------|-------------| | |
| 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 | | Code version lock | Old XLS may use superseded safety factors (e.g., no partial factors from Eurocode 7). |
The spreadsheet checks if the ground can support the crane. Assuming an eccentric load, the pressure distribution is calculated:
For structural engineers who want control, build a modular XLS using:
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