Stair tread depths shall be 11 inches 279 mm minimum.
Stair tread nosing depth.
Unfinished red oak tread nosed return is made for interior stair construction from attractive natural oak.
So since the minimum tread size is 10 a nosing will extend the tread depth to between 10 3 4 and 11 1 4.
Styles a and b are for use on wood or concrete stairs.
A nosing is not required where the tread depth is a minimum of 11 inches 279 mm.
For concrete stairs use concrete anchors with 4 screws.
The stair tread depth red arrow is measured from the forward edge of the step nose or edge of the step above out to the leading edge of the step being measured.
A nosing is not required where the tread depth is a minimum of 11 inches 279 mm.
The stair riser must measure 8 to 8 1 4 inches high.
10 to 11 inches minimum.
A step tread is the flat horizontal surface that you walk on.
The stair tread depth shall be measured horizontally between the vertical planes of the foremost projection of adjacent treads and at right angle to the tread s leading edge.
For stair treads less than 9 inches deep secure a new deeper tread directly on top of the existing tread.
The tread depth is the distance from the front edge or nosing a tread projection that overhangs the riser below of one step to the front edge or nose of the next step measured horizontally.
Staircase tread run depth.
For wood stairs use 4 wood screws.
For a typical staircase the stair tread must measure 8 1 4 inches to 9 inches deep measure 1 inch thick or more and have a maximum 1 1 2 inch deep nosing.
7 180 mm max.
11 280 mm min.
Screw nosing into place to protect the front portion of the stair and provide a slip resistant surface.
It is sold unfinished allowing you to finish it to match other red oak stair parts or decor.
The greatest stair tread nosing projection shall not exceed the smallest nosing projection by more than 3 8 inch 9 5 mm between two stories including the nosing at the level of floors and landings.
4 100 mm min.
Unfinished red oak tread the surewood lnl 13 in.
The surewood lnl 13 in.
Stair tread nose curve radius 9 16 or 1 2 in some codes.
Stair tread nosing stair tread nosing projection past vertical riser below 3 4 to 1 1 2 required on stairs with solid risers.
2 steps for stairs referred to in sentence 1 shall have a rise between successive treads not less than 125 mm and not more.
Beveling of nosings shall not exceed 1 2 inch 12 7 mm.
The ontario building code treads and risers 3 4 6 8.
1 5 38 mm max.
5 13 mm max.