The Metric Handbook states that there should be a maximum of 12 steps in a flight because "many people find long flights of steps difficult to use." Successive flights should have resting places at least 1200mm long, but preferably 1800mm with an unobstructed landing space at the top & bottom to avoid collision. A comfortable step will also have a rise of between 150-170mm & a going between 300-425mm deep.
All staircases & steps should have handrails, but these are not mandatory on both sides if the staircase is less than 1m wide. The top of the handrail should be between 900-1000mm above the pitch line. Where there are likely to be small children, an additional handrail at about 425mm high may be provided.
The Architect's Pocket Book states that public stairs should have a maximum rise of 190mm & a minimum going of 250mm.
All staircases & steps should have handrails, but these are not mandatory on both sides if the staircase is less than 1m wide. The top of the handrail should be between 900-1000mm above the pitch line. Where there are likely to be small children, an additional handrail at about 425mm high may be provided.
The Architect's Pocket Book states that public stairs should have a maximum rise of 190mm & a minimum going of 250mm.
Metric Handbook: Planning and Design Data (Fourth Edition), David Littlefield, 2012, p. 2-18, 42-7
Architect's Pocket Book (Fourth Edition), Charlotte Baden-Powell, 2011, p.195
Architect's Pocket Book (Fourth Edition), Charlotte Baden-Powell, 2011, p.195