Residential stair codes include a maximum rise (height) of 8 inches and a minimum run (depth) of 9 inches. The landings must be at least as deep as the stairs are wide (up to 4′-0″) and you can’t go up more than 12′-0″ vertically without a landing. A minimum landing depth of 36 inches is specified in most building codes. Landings must be provided at the top and bottom of every flight of stairs. Landings make stairs safer to use by breaking up tall flights of stairs to allow the user to rest . The minimum clearance shall be maintained the full width of the stairway and landing. Reserved 9.8.4.8. Division B: Acceptable Solutions Part 9 – Housing and Small Buildings British Columbia Building Code 2018 Revision 2.01 Division B 9.8.4.2. The depth of the tread must be at least 11 inches. The maximum stair rise is 7-3/4". A minimum 3' x 3' landing area is required at the bottom of stairs. R314.7 ILLUMINATION: All stairs shall be provided with illumination in accordance with Section R303.4. minimum permitted tread depth is 280 mm, but with ample space for the stairs, 300 mm treads have been selected. If the stairs have nosings, you measure from the leading edge of the nosing to the edge of the next step’s nosing. According to standards the maximum height of stairs may not exceed 200 mm. For the stair landings the landing thickness will use the same value as the Stair Type > Treads > Tread Thickness. 3. RISERS must be uniform between landings, 30-50 deg, ≤ 9.5” H. WIDTH ≥ 22” between railings. RAILINGS open-sided stairs < 44” require 1 stair rail/side; open-sided stairs > 44” require 1 stair rail and 1 separate handrail/side 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 ; The height and width of the steps. The tread depth shall be measured horizontally between the vertical planes of the foremost projection of adjacent treads and at a right angle to the tread’s leading edge. of steps &etc.). Or call us with your query on 0800 896 500. Most stairs are between 900mm – 1100mm wide, for comfortable use. In one and two family dwellings the maximum riser heights of 7 ¾ in. I did find an article that said 400mm if the door opened onto the landing , … The landing distance in front of the top and bottom step must be wider than the width of the staircase. The tread depth shall be measured horizontally between the vertical planes of the foremost projection of adjacent treads and at a right angle to the tread’s leading edge. PHOTO 8. GENERAL stairs ≥ 4’ H or w/3 treads and 4 risers require a stair rail/stair rail system. Width of stair or ramp. You may wish to consider a landing regardless of any exemption that might apply and this is simply to create a more visually appealing structure than a purely utilitarian set of stairs. A landing can either be: Where the staircase changes direction, a flat platform. You can check current stair regulations in full here (PDF). Landing Configuration. The largest tread or riser height shall not exceed the smallest by more than 3/8". This rule also provides the ability to drop the height of a deck ledger for increased weather resistance and ease of fastening to the house, all without requiring the space needed to build a full raised landing. Where a door opens into the landing it can’t project more than 7″ into the required depth of the landing. and A-9.8.4.) 1. The minimum tread depth is 11 inches. The tread depth shall be measured horizontally between the vertical planes of the foremost projection of adjacent treads and at a right angle to the tread’s leading edge. Tread Nosings (See Notes A-9.8.4.8. 9.8.4.7. Interior stairs from the house to the garage need not have a landing provided the door does not swing over the stairs. The stair treads are the steps that people walk on to climb up or down a stairway. The tread of the stairs (or the part of the stair where you place your foot) must be at least 11 inches. The minimum tread depth is 10". Doors opening onto a landing shall not reduce the landing to less than one-half the required width. The greatest tread depth within any flight of stairs shall not exceed the smallest by more than 3/8 inch (9.5 mm). They also provide an adequate surface for users to change direction when entering or exiting a flight of stairs. Down a stairway 8 inches and a minimum 3 ' landing area required! Summarized by these sketches courtesy Carson Dunlop Associates door to the left does swing. Not exceed the smallest by more than 3/8 inch ( 9.5 mm ) by these courtesy... 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