Building a set of wood stairs is not nearly as hard as you may think. With some basic wood tools and a bit of algebra you can easily build your own. Of course this can get a bit tricky for stairs with several landings but
method is still
same.This article will cover
steps for building a straight set of stairs. Chances are if you are reading this then you are still learning and won't be taking on a complex stair anyway.
Now, we will assume that it is from a deck to a concrete pad. The deck is going to be 48" wide and at eye level from
ground.
Tools you will need: 1. Circular saw 2. Framing square 3. Hand saw 4. Carpenters pencil 5. Measuring tape 6. 4' Level 7. Masking tape
You will also need: 1. 3 @ 10' / 2" x 12" boards - Choose
best only, make sure they are straight with no check (cracks). Very Important! 2. 2 @ 8' / 2" x 4" boards 3. 8 @ 8' / 2" x 6" boards - Once again choose
good ones. These are going to be
steps so... 4. 1 @ 45" / 2" x 6" boards 5. 1 sheet of plywood @ 1/2" / 8" x 48" 6. Of course, 3-1/2" framing nails and deck screws or nails for
steps.
Find
overall rise We want to know
exact vertical distance from
top of
concrete pad to
top of
deck. Take one of
8' 2x4's and rest one end on
deck and hold
other over
pad, Place
level on
2x4 and level
board. Then simply measure from
bottom of
2x4 to
pad. Lets say it is 64". This is
overall rise.
Now determine
overall run Before we can do this we have to determine how many steps we need. So first..
Take
overall rise, 64", and divide it by 7.25", which is
typical height of 1 riser (step). This gives us 8.83, which rounds up to 9, So we will go with 9 risers.
Important: There is always 1 less tread then risers. Whether you go up or down
last step is onto
deck or
pad. So 1 less tread.
Now we take 10.5",
width of a typical step, and multiply it by 8. This gives us 84". This is
overall run.
While we are doing
math we need to figure out
exact rise of each step. We simply take
overall rise of 64" and divide it by 9 and we get 7.111" or 7-1/8", or close enough to it. So each riser will be 7-1/8".
Time for some layout First thing. Grab your framing square. The long leg is
tread (step) leg and
short leg is
riser leg. Also, use
numbers on
outside of
square only.
Take some masking tape and wrap a piece around
framing square to establish you rise and run. Mark 10.5" on
outside of
long leg and 7-1/8" on
outside of
short leg.
Layout one of
2x12's on your saw horses or work bench. WIth
long leg of your framing square towards
end of
board start to line up
tape marks to
edge of
board facing you. Once you have
square in position mark
outside edge of it with your pencil.