Hartley Jam Factory
South West London
Temporary Works: Excavation for underground carpark.
Client: Squibb Demolition Ltd.
Contractors Design (CDS) Ltd. were appointed by Squibb & Davies to design the temporary works to the contiguous bored pile, lined underground car park and provide logistical advice on excavation sequence and methodology.
The overall plan size of the new car park was approximately 60m. long x 30m. wide by up to 11m. deep containing 3 levels of car parking for the new residential apartments at the site of the former Hartley’s Jam Factory in Bermondsey, South London.
Two levels of internal propping were provided using high grade tubular steel sections and two lines of temporary kingpiles to reduce the span. The permanent reinforced concrete capping beam to the contiguous piles was used as a top waling, whilst twin heavy U.B. sections diaphragmed together were adopted for the lower.
The sequence of excavation had to be carefully assessed to minimize asymmetric loadings on the temporary works whilst maintaining an efficient and practicable means of spoil removal to achieve a tight schedule.
The removal sequence and details were tightly co-ordinated to ensure various criteria were achieved for the Managing Contractor, Mansell, such as:
