Free Web Tool · Geotechnical

Underpinning Load

Distribute an existing wall / column load over underpinning pits or piers and check the underlying soil allowable bearing pressure.

Input

Results

Load per pier (kN)
Pier contact area (m²)
Pier contact pressure (kPa)
Utilization q_act / q_allow
Method

Equally divide P across N piers (assumes flexible distributing element). Check qact = (P/N) / (Bp·Lp) ≤ q_allow.