Simplex Westpile has long been renowned for its expertise in Rotary and CFA Piling and its innovative approach to the design and construction of retaining walls.
When used in permanent works, these walls can be designed to accommodate vertical loads in addition to horizontal moments and forces.
Simplex Westpile can design and construct all types of piled retaining walls, using either CFA, Cased CFA or traditional rotary methods.
The appropriate solution for each wall is selected individually at design stage and often a number of design solutions are contemplated. The final scheme to be adopted will consider:
- The requirement for the basement and thus grade of basement required
- The depth of the basement
- The nature of the soils and the environs to the project
- The construction sequence and method of excavation
- Any temporary and/or permanent propping requirements
- Piled Walls can be installed from 300mm to 1800mm diameter to suit the requirements of the design
Retaining walls can be constructed as free standing cantilevers, or may be propped in the temporary and permanent condition if space and sub-structure design permit. Where party wall agreements allow, ground anchors can be used as tie backs.
Technique:
Retaining walls are employed where available space either in the basement or the site dictates that basement excavation faces be vertical. Both CFA and Rotary Piling techniques offer technically effective and cost efficient temporary or permanent means of retaining the sides of bulk excavations even in water bearing strata.