Flight of stairs (component)

Flight of stairs and landing

Long flight of stairs without landing on an outside staircase

A flight of stairs is the part of a flight of stairs that is made up of the steps . A flight of stairs consists of at least three consecutive steps.

length

The length of the flight of stairs is measured horizontally between the front edge of the entry step and the front edge of the exit step on the running line.

width

• The width of the flight of stairs is measured directly above the step between the stringers. This dimension is not to be equated with the usable stair flight width.
  • The usable staircase width is measured at the height of the handrail between the surface of the staircase wall and the inner edge of the handrail or between the handrails
  • The usable stair flight width for necessary stairs in residential buildings with up to two apartments is 80 to 90 cm.
  • In residential buildings with more than two apartments, the usable flight of stairs for necessary stairs is 1.00 m, in Berlin and Hamburg 1.10 m.
  • In high-rise buildings , the usable flight of stairs is at least 1.25 m.
  • A minimum usable width of 1.20 m applies to schools , hospitals and theaters .
  • According to the Ordinance on Places of Assembly , the usable flight of stairs is based on the number of people assigned to this escape route. It is 1.20 m for every 200 people (outdoors every 600 people) and may be a maximum of 2.40 m wide.
  • In the Commercial Building Ordinance, a usable stairway width of at least 2.00 m and a maximum of 2.50 m is specified.
  • The garage ordinance requires a usable flight of stairs of 1.00 m.

Terms

• Stair arms are the result of individual flights of stairs with several multi-flight stairs.

Individual evidence

1. ↑ Calculation of building and engineering structures (accessed on March 27, 2020)