Staircase project. Wide stringer, how do you do it? 170+170 in height.

[Workingclasshero]

Hi
I'm finally going to start on my staircase on the back of the house.
The steps will be 400 deep with a rise of 170mm.
This requires a tall stringer.
How on earth do you join two 45x170 side by side in the best way?
I want to avoid visible metal plates, splice pieces, etc...

The steps will be made of angle iron, with half the step being a grate and the other half being oak pieces with a sawn surface for friction.
The oak pieces will be planed on the underside so that they are flat and stable in the angle iron frame.
The angle iron frame will be screwed with 3 through screws in each stringer.

But as I said, how do I join the seventy bits together?
Best answer gets a grogg on the finished stairs ;-)

/Workingclasshero

 

[Workingclasshero]

It's on the back here that the staircase will go up, so it needs to look a bit sturdy.
/W

 

[Anna_H]

I don't quite understand the question? Do you mean that there are so many steps that one board isn't long enough to build the stringer, or do you mean that you are buying ready-made short stringers with 3-5 steps to assemble into a long stringer?

Are there ready-made stringers with a 40 cm step depth?

 

[Spikrätaren]

A solid drink is something you don't want to miss 😎
A couple of dowels and PU glue plus a good bunch of clamps.
You can also use long lag screws that you countersink on the underside about half the width with a hole diameter that fits the right hex socket.
But do you really need 400mm tread?
Otherwise, 170mm riser gives 300mm tread.

 

[z_bumbi]

Plane a few mm off to remove the rounding of the edges, then glue and clamp. If you also place clamps along the glue joint, you can press the beams together sideways for a more even joint. Pre-drill and screw with appropriate screws. Make sure to choose a substantial thickness. Then just sand to the desired smoothness.

 

[Workingclasshero]

Thank you for the answers.
I let the trapstegsstommarna lock the vagnsstyckena together.

 

[Workingclasshero]

Built myself a buddy this winter, perfect for transporting stuff between the house and garage when building, crane and work platform.

 

[Workingclasshero]

Tadaaaaaaaa!!!!!!!!!

 

[Workingclasshero]

You don't want to miss a solid grog😎
A couple of dowels and PU glue plus some good clamps.
You can also use long French screws that you countersink on the underside about halfway through with a hole diameter that fits the right hex socket.
But do you really need 400mm tread depth?
170mm riser height otherwise gives you 300mm tread depth.

Then I'll offer the grog when the stairs are done.
Best answer you have, but of course, I did it differently
/W

 

[Spikrätaren]

...and we can all see that you step(!) by step(!) solve it in an excellent way👍

 

[Anna_H]

Aha, now I understand, you meant the width 😄

 

[Viktor.J]

Aha, now I understand, you meant the width 😄

Looks like the height just as TS wrote in the first post 👍🏻

 

[Anna_H]

Looks like in height just as TS wrote in the first post 👍🏻

Which dimension is which on a vangstycke can be debated for a long time, I think. Anyway, I asked what he meant, but got no answer.

 

[Workingclasshero]

Which dimension is which on a vangstycke can be debated for a long time, I think. Anyway, I asked what he meant, but got no answer.

Sorry, but I thought the pictures explained everything.

/W

 

[Workingclasshero]

Some stair steps pg.