4.5.2 Provision of information
Design and specifications shall be produced in a clearly understandable format, including all relevant information and shall be distributed to all appropriate parties.
The vibratory improvement proposal and accompanying information including relevant drawings should be submitted to NHBC at least eight weeks prior to the commencement of the vibratory process or associated works.
All dimensions and levels should be indicated and relate to at least one benchmark and reference point 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 treatments
- detailing of ducts
- junctions
- steps
- movement and/or 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 or unsuitable ground conditions.
This list is not exhaustive and additional content may be required depending on site specific circumstances.
Last updated: 2nd January 2025