Stair Design Guide: Difference between revisions
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[[File:stairs_example.png|100px]] | [[File:stairs_example.png|100px]] | ||
===Step Size=== | |||
The | The steps are 42.125" wide and 11.25" deep with a 1.125" nosing | ||
===Rise=== | |||
The top of the 2nd story sub-flooring is 121.125" from the top of the sill. We also need to add 1.5" from the basement slab to the sill plus 1/4" for the 2nd story flooring (121.125" + 1.5" + .25" = 122.875" total rise) | |||
The actual stairway rise will depend on the height of the landing: | |||
With 2x6s and 3/4" planks (6.25" total) it will need to be 116.625" | |||
With 2x8s and 3/4" planks (8" total) it will need to be 114.875" | |||
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The landing or the top step can be adjusted to make up the difference | |||
=== | ===CAD for Stairway with 7 3/4" rise=== | ||
[[File:stairs_detail.fcstd]] - Detailed design file - 7.75" rise | [[File:stairs_detail.fcstd]] - Detailed design file - 7.75" rise | ||
[[File:stairs_simple.fcstd]] - Simple object for merge | [[File:stairs_simple.fcstd]] - Simple object for merge | ||
=== | ===CAD for Stairway with a 7 5/8" rise=== | ||
[[File:7_625_stairs_detail.fcstd]] - Detailed design file - 7.625" rise | [[File:7_625_stairs_detail.fcstd]] - Detailed design file - 7.625" rise | ||
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[[File:7_625_stairs_example.fcstd]] - First floor example | [[File:7_625_stairs_example.fcstd]] - First floor example | ||
===FreeCAD workbench to generate stairs=== | |||
[[File:FreeCAD_Stairs_Workbench.zip]] | |||
Revision as of 23:53, 18 September 2021
Original design - File:Stairs.fcstd
Stairway for SeedHome v2
Step Size
The steps are 42.125" wide and 11.25" deep with a 1.125" nosing
Rise
The top of the 2nd story sub-flooring is 121.125" from the top of the sill. We also need to add 1.5" from the basement slab to the sill plus 1/4" for the 2nd story flooring (121.125" + 1.5" + .25" = 122.875" total rise)
The actual stairway rise will depend on the height of the landing:
With 2x6s and 3/4" planks (6.25" total) it will need to be 116.625"
With 2x8s and 3/4" planks (8" total) it will need to be 114.875"
15 steps of 7-3/4" (the maximum allowed by code) is 116.25"
15 steps of 7-5/8" provides 114.375"
The landing or the top step can be adjusted to make up the difference
CAD for Stairway with 7 3/4" rise
File:Stairs detail.fcstd - Detailed design file - 7.75" rise
File:Stairs simple.fcstd - Simple object for merge
CAD for Stairway with a 7 5/8" rise
File:7 625 stairs detail.fcstd - Detailed design file - 7.625" rise
File:7 625 stairs simple.fcstd - Simple object for merge
File:7 625 stairs example.fcstd - First floor example