dmoler
Geotechnical
- Feb 8, 2005
- 94
I have a pool that floated out about 1 foot. The homeowner's lawyer is claiming that during construction of a house next to the property, the diverted rain runoff to the pool area raised the water table and caused the pool to float. I have not done borings there yet, but that area generally has 2 feet of clean sand, then 2 feet of slight silty sand, followed by silty sand or silty clayey sand.
I already know that the pool was about 1/2 full when this happended, and that is the reason for the floating since the water table was raised during the heavy rain anyway and the pool would probably would have floated anyway.
Based on photographs, the area around the pool ponded (up to 1 foot, with pool top near top of pond level) during the rain event, which did not happen before the house next door was being constructed.
The questions are(finally) does ponding water in a highly permeable sandy soil constitute hydrostatic pressure? Does ponding water/saturated soil that is slowly draining exert some additional force?
I already know that the pool was about 1/2 full when this happended, and that is the reason for the floating since the water table was raised during the heavy rain anyway and the pool would probably would have floated anyway.
Based on photographs, the area around the pool ponded (up to 1 foot, with pool top near top of pond level) during the rain event, which did not happen before the house next door was being constructed.
The questions are(finally) does ponding water in a highly permeable sandy soil constitute hydrostatic pressure? Does ponding water/saturated soil that is slowly draining exert some additional force?
