Calculated Industries ConcreteCalc - Standard Stair Riser & Tread Calculations

Risers & Treads – 7-1/2” Riser Height
You’re building a stairway with a floor to
floor height of 28 feet 5-1/2 inches, a
length of 35 feet 6 inches and a nominal
riser height of 7-1/2 inches (default). Find
the number of risers, riser height, under-
age/overage, number of treads, tread
width and underage/overage, stringer
length and inclination angle.
Step/Keystrokes Display
1. Reset calculator:
[Conv] [x] 0.
2. Enter Rise and Run:
28 [Feet] 5 [Inch] 1 [/] 2 [Height]
35 [Feet] 6 [Inch] [Length]
3. Enter Desired Riser Height:
7 [Inch] 1 [/] 2 [Stair]
7-1/2 IN R-HT
4. Find Number of Risers:
[Stair] 46 RSRS
5. Find Actual Riser Height:
[Stair] 7-7/16 IN R-SZ
6. Find Underage/Overage:
[Stair] 0-5/8 IN R+/–
52 – ConcreteCalc™