I will build the new stringers out of 2x12 pine.
Thickness of stair tread.
According to the ibc stair tread depths must be a minimum of 11 inches on rectangular stairs.
I would like to build the new staircase using white oak treads would 3 4 or 7 8 thick treads in white oak with two stringers be sufficient.
Standard stair tread dimensions.
The stair case is 36 wide.
Here is a drawing detailing our standard stair tread and riser dimensions.
The actual thickness of the stair tread.
In my opinion a tread that is too thick might also have a tread nose that is too thick and might be a trip hazard to people ascending the stair.
The old stair treads are just garden variety pine 1 5 thick cut from 2x10.
Riser and tread dimensions should be continuously uniform for safety.
Tread face thickness with full 11 16 bull nose at front a c pie shaped stair tread d b.
Stair tread thickness as long as the span between stringers isn t too great 3 4 is fine kinda cheap unless it s finished oak i like 4x12 timber treads.
Full thickness of 11 16 across entire tread may not be available in some wood species.
Nosings must project at least 3 4 inch and no more than 1 1 4 inches beyond the riser below.
The strength of your stair treads needs to have a thickness that can effectively support a person going up and down the.
Building codes limit variation to 3 8 10 mm the underside of risers should be sloped or have a 60 angle minimum between nosings and the horizontal surface open risers are not allowed under ada guidelines.
The tread depth can go to any maximum as long as the maximum tread in a stairway does not exceed the smallest by over 0 375 inches.
The greatest tread depth within a flight of stairs cannot be more than 3 8 inch larger than the smallest tread depth.
If the stair treads are.