KIMBOLTON ROW

London, Chelsea SW3

Project Information

Geostructural Solutions Ltd was awarded a prestigious basement project in London SW3 which it undertook with the support of sister company GSS Piling Ltd.

Works involved the formation of a double-storey basement with substantial drainage sumps and service pits for a new residential property.

Access was limited by substantial properties to all elevations of the basement. Restricted access piling methodology was there fore required. We also employed top-down construction methodology, utilising the ground floor slab as a permanent prop whilst also maintaining a clear hard standing for the movement of plant and materials.

Our client commended us on the successful delivery of the project which was completed on time and within budget.

highlights

h1

Two phases of piling

Piling works were carried out in two phases, the first phase using a Klemm KR708-2 piling rig to install a contiguous wall from the existing ground level, followed by the installation of bearing and temporary plunge post piles to support the ground floor slab The second phase was undertaken from B2 level using Klemm KR702-2 piling rig which needed to be lowered approximately 6m below ground to install tension piles and form a secant bored pile wall. Forced ventilation was managed throughout the works.

Ground conditions

The strata were challenging with sub-artesian water at a depth of 21.0m. A limestone layer from 0.8m to 2.0m thick was directly below the sub-artesian water. We modified the boring head of the augers and bored the piles with the aid of an air injection kit to minimize the augers torquing up and to ease the boring process.

Concrete Mix Design

Concrete mixes were carefully reviewed to ease the installation of cages up to 16.0m long and central bars with lengths up to 24.3m. All cages were successfully installed to their scheduled design level without the use of a cage vibrator which helped to reduce congestion on site.

Project
KIMBOLTON ROW
Engineer
Contractor
Clarisford
Services
Rigs
Duration
16.5 weeks
Value
£1.9m basement works package, with a piling value of £485K
Location
London, Chelsea SW3
Status
Completed
Project summary
Project summary
Project
KIMBOLTON ROW
Engineer
Contractor
Clarisford
Services
Rigs
Duration
16.5 weeks
Value
£1.9m basement works package, with a piling value of £485K
Location
London, Chelsea SW3
Status
Completed