Answer
Worked out from a total rise of 96.00 inches, floor to floor.
Concrete steps calculator
Concrete8.15cu yd
- Total rise
- 96in96.00 in8 ft
- Concrete
- 220.00cu ft
Given
What this was worked out from
These are the figures every number on this page is worked for.
Solution
Every dimension of this flight
To the nearest sixteenth- Total rise
- 96in96.00 in8 ft
- Risers
- 14
- Riser height
- 67/878in6.857 in
- Treads
- 13
- Tread run
- 11in11.000 in
- Total run
- 143in143.000 in11 ft 11 in
- One step along the edge
- 1215/161516in12.962 in
- Marked length
- 1811/212in181.472 in15 ft 1.47 in
- Stringer length
- 1721/414in172.235 in14 ft 4.24 in
- Board length
- 16ft
- Angle
- 31.9°
- Stringer angle
- 33.9°
- 2 risers + 1 tread
- 2411/161116in24.71 in2 ft 0.71 in
- Bottom cut deduction
- 1in1.000 in
- Tread thickness
- 1in1.00 in
- Nosing
- 1in1.00 in
- Stair width
- 36in36.00 in3 ft
Options
What each step takes
- Step width
- 48in
| Step | Volume |
|---|---|
| 1 | 2.10cu ft |
| 2 | 4.19cu ft |
| 3 | 6.29cu ft |
| 4 | 8.38cu ft |
| 5 | 10.48cu ft |
| 6 | 12.57cu ft |
| 7 | 14.67cu ft |
| 8 | 16.76cu ft |
| 9 | 18.86cu ft |
| 10 | 20.95cu ft |
| 11 | 23.05cu ft |
| 12 | 25.14cu ft |
| 13 | 27.24cu ft |
| 14 | 29.33cu ft |
Volume only. No bag count is claimed until a manufacturer's yield is on file.
Code
Each figure against the limit it has to meet
| Dimension | Limit | Code | Result |
|---|---|---|---|
| Riser height, maximum | 73/434in | IRC 2021 (residential) | Within |
| Tread depth, minimum | 10in | IRC 2021 (residential) | Within |
| Stair width, minimum | 36in | IRC 2021 (residential) | Within |
| Riser height, minimum | 4in | ADA 2010504.2 | Within |
| Riser height, maximum | 7in | ADA 2010504.2 | Within |
| Tread depth, minimum | 11in | ADA 2010504.2 | Within |
| Nosing projection, maximum | 11/212in | ADA 2010504.5 | Within |
Calculators
Work out one part on its own
Source
Where the limits come from
2 sources, with the date each was read
- Code limits: IRC 2021 (residential), retrieved from https://www.co.routt.co.us/DocumentCenter/View/15202 on 2026-09-18. Numeric limits only; no code text is reproduced.
- Code limits: ADA 2010, 504.2, 504.5, retrieved from https://www.access-board.gov/aba/chapter/ch05/ on 2026-09-18. Numeric limits only; no code text is reproduced.
Building codes are adopted and amended locally. Confirm every figure with the code your jurisdiction has adopted before you cut.
Updated September 2026