Stair Stringer Throat Thickness

What made it more challenging is if you simply plugged the rise in to a construction calculator you would end up with 3 treads.

Stair stringer throat thickness.

Running measurements vertically lower floor to top of each tread. How to build safe stair stringers that don t sag squeak collapse or lose their treads. This is a part of the plan that everyone got a simple stair stringer with 4 risers 4 treads. This article describes the construction and building code specifications for the support of residential stairways.

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. According to standards the maximum height of stairs may not exceed 200 mm. The only guidance provided to a builder for the structural capability minimum throat depth of wood framed stair stringers comes from a carpentry handbook. Might get shot for this but as i recall from wood framing days throat depth.

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. If you plugged in the run 4 you would end up with 6 risers. 3 for 9 stringer 5 for 11 stringer 8 for 14 stringer.

The width of the opening of the stairs. Otherwise it is left to the builder s common sense experience and available rules of thumb to prevent the stringers for a 10 foot flight of stairs to be constructed from two 2x8s. Stair stringer notching template. Usually 15 17 cm optimal width of a step 27 30 cm.

For concrete stairs select concrete thickness and enter the throat thickness see diagram and stair width to calculate formwork dimensions and concrete volume.