Stair Design Guide: Difference between revisions

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[[File:stairs_test.png|100px]]
[[File:stairs_test.png|100px]]
[[File:house_w_stairs.png|100px]]
[[File:house_w_stairs.png|100px]]
[[File:stairs_example.png|100px]]


The top of the 2nd story sub-flooring is 121.125" from the top of the sill. We then need to add 1.5" from the basement slab to the sill plus another 1/4" for the flooring, making the total rise from the slab to the top of the flooring 122.875"


We have 121.125" to the top of the 2nd story flooring from the top of the sill, then we need to add 1.5" for the sill, which makes the total rise 122.625"
The actual stairway rise will depend on the height of the stair landing:
 
The stair landing takes care of 6.25" (5.5" 2x6 plus 3/4" planks), so the stairway needs to rise 116.375"


'''UPDATE: As-built the landing used 2x8s instead of 2x6s, so it is 8" high (7.25" 2x8 plus 3/4" planks), which reduces the needed stair rise by 1.75"'''
If made with 2x6s plus 3/4" planks it will be 6.25", making the needed rise 116.625"
If made with 2x8s plus 3/4" planks it will be 8", making the needed rise 114.875




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===Stairs with 7 3/4" rise===
===Stairs with 7 3/4" rise===
[[File:stairs_detail.fcstd]] - Detailed design file
[[File:stairs_detail.fcstd]] - Detailed design file - 7.75" rise


[[File:stairs_simple.fcstd]] - Simple object with approximate position for merge into master
[[File:stairs_simple.fcstd]] - Simple object for merge


===Stairs with a 7 5/8" rise===
===Stairs with a 7 5/8" rise===
[[File:7_625_stairs_detail.fcstd]] - Detailed design file
[[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_simple.fcstd]] - Simple object for merge
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[[File:stairs_example.png|100px]]
[[File:stairs_example.png|100px]]


[[File:7_625_stairs_example.fcstd]] - First floor partial
[[File:7_625_stairs_example.fcstd]] - First floor example

Revision as of 20:21, 13 September 2021

Original design - File:Stairs.fcstd


Stairway for SeedHome v2

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Error creating thumbnail: File missing
Error creating thumbnail: File missing

The top of the 2nd story sub-flooring is 121.125" from the top of the sill. We then need to add 1.5" from the basement slab to the sill plus another 1/4" for the flooring, making the total rise from the slab to the top of the flooring 122.875"

The actual stairway rise will depend on the height of the stair landing:

If made with 2x6s plus 3/4" planks it will be 6.25", making the needed rise 116.625" If made with 2x8s plus 3/4" planks it will be 8", making the needed rise 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"


Steps are 42.125" wide, 11.25" deep


Stairs with 7 3/4" rise

File:Stairs detail.fcstd - Detailed design file - 7.75" rise

File:Stairs simple.fcstd - Simple object for merge

Stairs 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

Error creating thumbnail: File missing

File:7 625 stairs example.fcstd - First floor example