Stair details refer to the standard requirements for each of the various components of a flight of stairs.
Step tread size uk.
This is because stair treads can be crafted from thick oak to think stainless steel.
An unexpected difference of.
You ll find the tread width in the column on the left and the rise height in the column on the right.
The width of the opening of the stairs.
This control is mainly directed at disabled access to the main entrance but there is always a legal obligation to design safely.
Step tread 2 riser 26 or 27.
Doors should not open more than 400mm onto the front of any step.
Shop for stair parts online.
For loft conversions the headroom will pass the building regulations if the centre of the stair width is 1 9m reducing to 1 8m at the side of the stair.
According to building codes stair tread for wood stairs has to be anywhere from 1 to 1 in thickness.
Usually 15 17 cm optimal width of a step 27 30 cm.
The uk building regulations states that stair treads must have a minimum depth of 220 mm 8 66 inches for a private house.
The rise and going tread dimensions of a formal flight of stairs should be constant.
The building regulations also state that the tread should be a minimum of 50mm tread width at the narrow end.
For people with disabilities the minimum tread size is 27 5 cm 11 inches which would be the effective minimum and likely the average size of the tread for any stairs built for public use.
S and standard value in a private house taking 90 110 cm if space is limited a width of the opening sause the minimum critical value 80 cm.
Alternating tread stairs should.
Headroom for loft conversions.
Find the right tread and riser for your situation by pluging your measurements into this formula.
Harvard university lists typical tread sizes between 20 and 28 7 cm 8 and 11 1 2 inches.
When it comes to other materials the thickness may differ.
Or use the handy chart below with the ratios already figured for you.
The height and width of the steps.
According to standards the maximum height of stairs may not exceed 200 mm.
The size and shape of outdoor steps in new buildings is governed by the local building regulations.
All other buildings must have stair treads that are at least 250 mm 9 8 inches deep.
Other uk staircase building regulations.
The inside tread dimension.
Institutional buildings and places of assembly must have a going of at least 280 mm 11 inches on their stairs.