Stairs Landing Height Calculator
Actual Measurements
Total Height =
Stairwell Length =
Landing Depth = 36
Total Headroom = 0
Risers & Runs
Total Number of Risers =
Risers Above Landing =
Actual Risers =
Actual Run =
Treads
Tread Width =
Treads Above Landing =
Landing Height
Top Down =
Landing Position =
Bottom Up =
Extras
Actual Landing Depth =
Headroom =
Angle of Incline =
rise_limit = 7.75
run_limit = 9
nosing = 1.25
arise =
nor =
sr =
Help
Calculates the height of a landing from the Stairwell Length and Total Height.
Rows
Actual Measurements
- Total Height: Measurement from the floor of the top level to the floor of the bottom level.
- Stairwell Length: Horizontal distance from the top level (where the stairs start) to the back of the Stairwell.
- Landing Depth: provides a measurement from the Top Down to the top of landing and a Bottom Up to the top of landing.
- Total Headroom: Floor of bottom level to ceiling of bottom level. Landing is placed within this dimension. Use to calculate the Headroom.
Risers & Runs
- Total Number of Risers: modify to change the landing height.
- Risers Above Landing: modify to change the landing height.
- Actual Risers: calculated from the Total Height.
- Actual Run: calculated from the total stairwell run (Stairwell Length - Landing Depth).
Treads
- Tread Width: Run + 1&1/4in nosing.
- Treads Above Landing: Number of Treads above the Landing. Used to calculate Number of Treads needed.
Landing Height
- Top Down: Vertical measurement from the floor of the top level to the Landing. Top Down + Bottom Up should equal the Total Height.
- Landing Position: Placement of Landing. Landing is at the First riser, Second riser, Third riser, etc.
- Bottom Up: Vertical measurement from the floor of the bottom level to the top of the Landing. Top Down + Bottom Up should equal the Total Height.
Extras
- Actual Landing Depth: landing depth plus one run.
- Headroom: Vertical measurement from the ceiling of the bottom level to the top of the Landing.
- Angle of Incline: Angle the stairs are at, from horizontal to vertical.
Contributed by Gary Wiese.
Examples
Example 1
Given the following information about the stairs, what is the other data required to complete a stair's landing:
- Total Height: 14ft
- Stairwell Length: 17ft
- Landing Depth: 3ft
- Total Headroom: 8ft 7&1/2in
This produces the following results:
Risers & Runs
-Total Number of Risers: 22
-Risers Above Landing: 19
-Actual Risers: 7&5/8in
-Actual Run: 9&5/16in
Treads
-Tread Width: 10&9/16in
-Treads Above Landing: 18
Landing Height
-Top Down: 12ft 1&1/16in
-Landing Position: 3rd Riser
-Bottom Up: 1ft 10&15/16in
Extras
-Actual Landing Depth: 3ft 9&5/16in
-Headroom: 6ft 8&9/16in
-Angle of Incline: 39.3°
Example 2
If the same stairs contain 23 risers instead of 22, what is the results?
- Total Number of Risers to 23
Results:
- Actual Risers: 7&5/16in
- Landing Position: 4th Riser
- Headroom: 6ft 2&5/16in
Note: Headroom should be at least 6ft 8in to pass Building Codes.
Example 3
If the risers above the landing is 20 instead, what is the results?
- Risers Above Landing: 20
Results:
- Actual Run: 8&13/16in
- Landing Position: 3rd Riser
- Headroom: 6ft 9&9/16in
- Angle of Incline: 39.6°
Keywords
Total Height
Stairwell Length
Landing Depth
Total Headroom
Total Number of Risers
Risers Above Landing
Actual Risers
Actual Run
Tread Width
Treads Above Landing
Top Down
Landing Position
Bottom Up
Actual Landing Depth
Headroom
Angle of Incline
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