Banner image showing ASRS van outside castle

The Challenge

ASRS were called in to provide a specification and repair scheme to part of a castle that is suffering from subsidence. The cause of the problem could not be ascertained until a full soil investigation had been completed.

ASRS carried out 2 No trial pit and 2 No bore hole inspections to obtain an accurate site investigation to enable ASRS to specify the precise solution for this project. The soil investigation showed that tree roots were present along with insufficient foundations to the affected area. Our engineer the used the patented Helicap programme to design a repair solution.

The Solution

The repair proposal that was designed is to restore the structural integrity of the masonry, where cracking and downward movement has occurred, with the introduction of Helifix masonry beams installed laterally to distribute the structural loads. Also within the specification we have prepared a scheme for the installation of Chance screw down micro piles to the sub-structure. The works comprise the installation of 11 No. Chance piles. Each pile to have 203mm and 254mm diameter helices to provide the bearing capacity and screwed in to a depth of 3m. With the capability to complete onsite load testing every half meter we were able to reach the required loads for each pile.

Masonry beaming within castle walls

Micro-piling to castle foundations

Micro piles being installed

ASRS van outside castle where repairs to foundations were carried out

ground around castle made good following repair to foundations

ground around castle building made good following micro pile installation to repair foundations

The Challenge ASRS were called in to provide a specification and repair scheme to part of a castle that is suffering from subsidence. The cause of the problem could not be ascertained until a full soil investigation had been completed. ASRS carried out 2 No trial pit and 2 No bore hole inspections to obtain […]