G'day welcome back to Buildsum and in this video. I want to show you how to
mark out or set up a string out for a set of stairs, so
Obviously, I'm Gonna put a set of stairs off this ramp
down onto the ground
like such
Just remember when you guys do it you like to have to have somewhere for it to land
Making sure it doesn't sit hard on the ground so that
You allow for termites, and you don't get water pooling around it
so yeah, just make sure you guys make those allowances, but I've got a rise of flight of
700mm
and a going of a flight of 1.050
and
I can work out roughly using pythagoras that my staircase
It's roughly gonna be 1.216 long give myself a little bit of play both ends
and round up for next timber size, so I'm going to end up with a
piece of timber about 1800 long to start my job. I'll start the process this case
It's 240mm wide
Which I would think would be sort of a minimum for a stair stringer
Okay, so now what we need to actually set out our staircase. You know I always
tend to go with a 50mm margin
Again 50mm is just a figure I've plucked
So you can use any figure you like could be 30 and in some cases I've seen stairs with no Margin
And I've actually seen them with a negative Margin with this
treads actually stick past the edge of this there, so
really up to you how you do that
Okay, now you would do some lead up calculations which I'm gonna put in another video to work out
What the rise of your stair is and what the going of your stair is
And you need to set up your steel square
to show that so I
Would put the rise I square from my Margin line
okay down on my tongue and
The going on my stair on the blade to my margin line, and then I would set up my buttons or my fence
to set that dimension so to remember from the Margin line not from the edge of our stringer and
always start
yeah, probably a 100mm from the end of your piece of timber, and then all you need to do is draw in your
rise and your going and
You can then step that out
down your stringer
with however many
rises and goings that you need
For your staircase
Okay, so in this case
I only needed
need 3 goings 3 treads, okay. This is actually going to be the ground line
And this will be where it butts up through the deck
So next you can draw in where your actual treads are going to go. It's a couple of different ways of doing this
you can just trace it in you can cut
the entire
Trench out
So it comes all the way at the back and if you're going to do it that way
You can use a power saw and a chisel chisel right out or obviously you can use a router
You could decide just to chisel out for the actual tread itself and again this is you can do this one with a router or
You can also just use brackets so no trenching required
Screw the bracket to your to your stringer obviously allowing for the thickness of the tread
down from your from your line
so whichever method you're going to go with that's up to you, but
You need to cut them out so the next thing
I'm going to look at is finishing off the ends of the the ends of the stringer
So down here as I said this dimension here is their ground line, we actually need to extend that through
back this way because we're gonna cut that end all the way off and
What I tend to do is whatever my Margin line is I come off my first
my first rise line the same distance
So my margin was 50mm, so I'm going to come out here 50mm and put a line in there
So I'm gonna cut all this end off
On the other end I'm gonna extend my last
Riser Line all the way through
But sometimes you're gonna cut that off as well however I want to leave a little hook or a horn or a haunch
depending on where you are from
On the end to hook over my deck on my landing so what I do is where this line intersects with a Margin line
I'm going to come off here at 90 degrees
Where it intersects with the edge of my stringer
I want to come off here at 90 degrees like such and then where this line
hits my Margin line again I'm gonna come back down to
form my haunch on my horn
So I would actually end up cutting this whole end off again to sit over our step
So string is going to end up looking something like that
And that should sit up there nicely
in to the right spot again making sure you allow a few termite and
water
Protection down this end
So there you go
There's the process of setting out a set or a stringer for a stair remember you now have to repeat that in
mirror for the other side