This article describes the construction and building code specifications for the support of residential stairways.
Stair stringer throat thickness.
According to standards the maximum height of stairs may not exceed 200 mm.
How to build safe stair stringers that don t sag squeak collapse or lose their treads.
The width of the opening of the stairs.
Might get shot for this but as i recall from wood framing days throat depth.
Usually 15 17 cm optimal width of a step 27 30 cm.
The only guidance provided to a builder for the structural capability minimum throat depth of wood framed stair stringers comes from a carpentry handbook.
Stair stringer notching template.
This is a part of the plan that everyone got a simple stair stringer with 4 risers 4 treads.
For concrete stairs select concrete thickness and enter the throat thickness see diagram and stair width to calculate formwork dimensions and concrete volume.
3 for 9 stringer 5 for 11 stringer 8 for 14 stringer.
The height and width of the steps.
How strong should the stringers be and what are the load bearing requirements of stairs and their.
Timberstrand lsl stair stringers and sturdistep stair treads specifier s guide 9010 september 2015 2 1 1 3e timberstrand lsl stair stringers suggested residential stringer attachment details 40 psf live load and 12 psf dead load high end 1 7minimum throat depths may be reduced by an additional for 11 8 and 14 material depths if 2x4 reinforcement is.
If you plugged in the run 4 you would end up with 6 risers.
Codes strength requirements for stair support systems.
Timberstrand lsl stair stringers and sturdistep stair treads specifier s guide 9010 ember 2015sept 2 1 1 3e timberstrand lsl sairt stringers suggested residential stringer attachment details 40 psf live load and 12 psf dead load high end 1 minimum throat depths may be reduced by an additional for 117 8 and 14 material depths if 2x4 reinforcement is.
What made it more challenging is if you simply plugged the rise in to a construction calculator you would end up with 3 treads.