Abbey Pynford were approached by Bellway Homes to solve the heave issues relating to 2 properties on the same development.
One property was to be underpinned using a piled raft underpinning scheme and the other was to be underpinned and re-levelled.
Jacking was achieved by bolting lifting frames to fixings cast into the raft slab at each pile position and by installing Abbey Pynford AutoProps between the frames and jacking tubes protruding from the top of each pile. The jacking operation was carried out in several cycles with the amount of lift individually calculated at each pile position and pre-set into the jacking system so that each part of the building was lifted by the appropriate amount to return the slab to level.
“Two new properties that had suffered heave damage where the rear left hand corner of one property was approximately 120mm lower than the front right. A difficult job well executed by the experienced on site staff”
Nick Tidman – Contracts Manager