Client: Cabot Homes
Scale: £1m
Duration: 35 weeks
Summary of Albion Works:
- Design and build
- Construction of soil nail retaining wall using Dywidag solid bar
- Difficult geological conditions with dipping quartzitic sandstone
over clay layer - 170 soil nails incorporated with sprayed concrete and phased excavations to create terraces for housing development
- Rig Klemm 802 Geotechnical Rig with top hammer
This project was part of a prestigious housing development by Cabot Homes to convert an old factory unit into new residential homes. The building site was the site of an old factory and all that was left was the concrete base. Due to the nature of the site there was significant concern regarding the potential for soil erosion.
We initially undertook the design and build responsibilities for the wall and excavated face. It required ground anchoring to retain the exisisting wall and soil nailing and shotcreting to stabilise the excavated face. We worked closely with a civil engineering company and as they excavated we installed rows of soil nails and ground anchors.
The worksite was surrounded by existing properties and required innovative solutions to maximise available space for infrastructure works and minimise disruption. The job required drilling through concrete and marl, which has the potential to create a significant amount of dust. We therefore developed an innovative vacuum/water misting system mitigate the dust on the worksite.
After we completed the first stage, Cabot Homes asked us to stay on to carry out the piling work, the installation of a Gabion wall, the installation of the main drainage for the site and the laying of foundation slabs.