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.
Thickness of stair tread.
Note that there is no maximum stair tread thickness nevertheless very thick stair treads say using timbers greater than 1 1 2 thick typical 2x lumber thickness might be hazardous.
Since wood stairs are the most popular material used in homes today here are three wooden stair tread specifications for your personal reference.
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.
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.
If the stair treads are.
Standard stair tread dimensions.
According to the ibc stair tread depths must be a minimum of 11 inches on rectangular stairs.
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.
Full thickness of 11 16 across entire tread may not be available in some wood species.
These dimensions may be useful when laying out a staircase or if you have general questions about the size and shape of a traditional tread or a retro tread.
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.
I will build the new stringers out of 2x12 pine.
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.
The stair case is 36 wide.
Tread face thickness with full 11 16 bull nose at front a c pie shaped stair tread d b.
The old stair treads are just garden variety pine 1 5 thick cut from 2x10.
Here is a drawing detailing our standard stair tread and riser dimensions.