Raft, pile, pier and beam foundations

4.4.2Provision of information

Designs and specifications shall be produced in a clearly understandable format, include all relevant information and be distributed to all appropriate personnel.

All dimensions and levels should be indicated and relate to at least one benchmark and reference points on site. Design and specification information should be issued to site supervisors, relevant specialist subcontractors and/or suppliers, and include the following information:

  • Dimensions, type and depth of foundations.
  • Detailing of ducts.
  • Junctions.
  • Steps.
  • Movement and construction joints.
  • Location of services.
  • Critical sequences of construction.

Both designers and site operatives need to be aware of:

  • ground conditions
  • any features requiring special attention, such as existing sewers or other services
  • water table levels
  • the presence of any hazardous substances including sulfates.