TUTORIALS

How to calculate, layout and build stairs

There’re three main things in stairs: 1) Riser 2) Tread 3) Height

These three things are required for designing stairs.

Riser dimension maximum = 7” (inches)
Riser dimension minimum = 4’’ (inches)
Tread dimension maximum = 12” (inches)
Tread dimension minimum = 10” (inches)
Assume riser dimension = 6” (inches)
Assume tread dimension = 10” (inches)

Assume height = 10’ (feet)

Change riser and tread in feet
Tread = 10”/12 = 0.833 feet [1 feet = 12 inches]
Riser = 6”/12 = 0.5 feet
Number of steps = Height/Riser = 10/0.5 = 20 steps

Number of steps – 1 = 20 – 1 = 19

Length = 19 x 0.833 = 15.827 feet
Angle up to = 25

Angle utmost = 40
Angle should be between 25 and 40.

To get more details, go through the following video tutorial.

Lecturer: Civil Study