Recommendations for stairways and ramps

• Landings. The going and width of the landing should not be less than the width of the flight or ramp. Landings should be level and free from permanent obstruction. A door is permitted to swing across a landing at the bottom of a flight if it leaves an area 400 mm wide across the width of stair or ramp.

• Handrails. Stairs and ramps should have a handrail on at least one side. Where the width is over 1000 mm, then a handrail should be fixed on both sides.

Figure 10.1b General requirements under Section K: section

Figure 10.1c General requirements under Section K: plan

Handrails are not required:

• beside the bottom two steps in a stairway unless it is in a public building or intended for disabled people;

• Handrails to be between 900 mm and 1 000 mm.

Danger can occur by omitting the handrail for the last two steps - bad light or haste can precipitate a fall since the handhold and stair run are linked in the mind's eye. The Regulations recognize this danger for escape ramps and stairs and demand a handrail for the full length.

• Headroom. Clear headroom of 2 m should be provided over the whole width of any stairway, ramp or landing. Reduced headroom is allowed for loft conversions.

Figure 10.1d General requirements under Section K: alternating tread stairs

Rise and going relationships have already been discussed in arriving at standard stairs for flats and commercial buildings in Chapter 3. The practical limits for the various building categories are given in Figures 10.1 e-g. The pitch limitation should be noted (42° for private stairs, 35° for assembly and institutional buildings as well as common stairs).

0 0

Post a comment