Mezzanine Flooring

Mezzanine Floor Staircases

Part M Mezzanine Staircases

Recently introduced legislation, for example, requires that at least one Ambulant Disabled Staircase (ADS) complying with Approved Document M of the Building Regulations should be fitted to mezzanine floors used for storage and that, in addition, a lift should be provided for office use.

Approved Document Part M requirements:

  • 1200mm wide treads
  • Distinguishable step nosing
  • Twelve tread maximum rise between flights
  • 1200mm clearance between landings and door swing
  • 170mm maximum riser
  • Infill risers
  • Continuous handrail with 300mm extensions top and bottom
  • 250mm going of each step

National Building Specification (NBS) Part M: Access Statements.

  • Mezzanine Floor Staircases
  • Mezzanine Floor Staircases