| Figure and calculate stair
stringer for length of wood to buy. You can simply figure about 14
inches per step and be close enough.
Pythagorean Stair Theorem
A multiplied times A + B multiplied times B = C multiplied
times C
Example: The stair riser A is 7 inches and the stair tread is 10
inches.
7 x 7 = 49 + 10 x 10 = 100
Next Step 49 + 100 = 149 Next Step
You will need to find the square root
| of 149. On your calculator it will be a symbol that
looks like this
 |
Next Step Enter 149 into the calculator and press the square root
symbol and the answer should be 12.20655
C would equal 12 and 1/4 inches. Now just multiply 12.2 times the
number of steps or treads to get the length of the stair stringer.
Steel Handrail Turn
Underside of
Steel Stairs
Down View of
Steel Stairs
Painted Riser For
Safety
|
