Case studies

• Abbey
• Avenue Road
• Aspect
• Blaw Knox
• Burghfield Mill
• Comet Square
• Crayland Lane
• Crown Mansions
• Dean Park
• Fairclough Street
• First Central, Park Royal
• Gleneagle
• Hart Street
• Heathside
• Jubliee Square
• Ransom Court
• River Side
• Sandhurst Park
• Shoreham Street
• Springwell Lane
• Stone

• Home
• About us
• Engineering services
• Case studies
• News
• Careers
• Contact us
• Sitemap

You are: Home Case studies Dean park

jnpgroup consulting engineers services provided:

• Site Investigation
• Geotechnical & Enviromental Design
• Civil Designs
• Structural Design
• Drainage Design
• Road Design
• Foundation Design
• S38 Design
• S104 Design
• 3D Earthwork Strategy & Control
• Earthwork Project Management & Control

Dean park

The site comprises the former premises of Lees Lime works, a Victorian, Edwardian lime works in use by Blue Circle Cement up to the Second World War. The site was derelict until the early 1990s when a decision was made to redevelop the site and planning permission for housing obtained. Part of the site was occupied by a large Blue Circle flue dust tip with an irregular and inadequate capping. Unacceptable levels of alkaline leachate were emanating from the flue dust tip and remedial action was required. Contamination was present over a large part of the site resulting from the former industrial use over the latter part of the 19th and early half of the 20th century. The total site area is approximately 20 acres.

jnpgroup consulting engineers provided planning, design and supervision of full geotechnical and contamination site investigation. Analysis of findings, negotiations with the Environment Agency, method statements for the avoidance of waste management regulation license and preparing 3D earthworks drawings and specifications for relocation of flue dust tip, including provision of new capping and drainage details and provision of two full size football pitches on top of the reprofiled and relocated tip.

jnpgroup consulting engineers provided full earthworks, 3 dimensional analysis and cut and fill drawings, cut and fill volumes, for the earthworks contractor to move contaminated and uncontaminated soils around the site to render site safe for housing. This saved the need for exportation of contaminated material and importation of additional clean material. jnpgroup consulting engineers controlled the earthworks including monitoring of compaction and gaining agreement from the Highway Authority, The Environment Agency, and NHBC following completion of earthworks.

Full civil and structural engineering design of entire estate including all drainage, roads, foundations and superstructure. Special foundations were required to all houses, consisting of insitu RC (egg box) semi rafts to take account of engineered fill site conditions. Note the use of piles was not feasible due to poor strengths of underlying soft alluvial soils. These were surcharged, as part of the earthworks operation, to remove the possibility of future settlements as a result of the development loading.

Associated Riverworks

Before:

After:

Project: Redevelopment of former Lees Lime works, Halling, Kent to provide 135 new detached and semi detached 2 storey houses together with relocation of cement flue dust tip and provision of new football pitches and riverside walk for Medway Council.

Project Value: £14.5m

Client: Saxon Homes/Blue Circle Industries