Timber and concrete upper floors

6.4.2Provision of information

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

Design and specification information should be issued to site supervisors, relevant specialist subcontractors and suppliers, and include the following information:

  • Direction of floor span, and size and spacing of joists or concrete components.
  • Size of trimmers and trimming joists.
  • Position of strutting.
  • Detailing of openings in the floor.
  • Supporting walls below.
  • Walls and partitions above.
  • Positions of restraint straps.
  • Positions of large service penetrations, e.g. chimneys, SVPs.
  • Position of insulation.
  • Details of all junctions.
  • Manufacturers’ recommendations for assembly and fixing of proprietary components.