How do you put RSJ/UB above existing pipework?

LikeMyHome · 30 Oct 2020

Hello everybody,

We're doing loft conversion and we will need to use universal beams. There'r existing pipework in the loft (plastic water pipes, copper boiler pipes). How do you put RSJ/UBs over the pipes?

Notching doesn't seem an option. Drilling holes in UBs, cutting pipes and re-passing them thru UBs and re-joining?

23vc · 30 Oct 2020

Re route the pipes so they don’t need to go through a steel beam. Holes in it would need to be ok’d by the SE

^woody^ · 30 Oct 2020

Put the beams over the pipes, or the pipes under the beams

Surely the beams are above the existing rafters in the first place?

LikeMyHome · 30 Oct 2020

23vc said:
Re route the pipes so they don’t need to go through a steel beam. Holes in it would need to be ok’d by the SE

That's not possible - the pipes are in the loft corner.

^woody^ · 30 Oct 2020

LikeMyHome said:
That's not possible - the pipes are in the loft corner.

That should not matter they can still be moved to go over/under a beam

LikeMyHome · 30 Oct 2020

^woody^ said:
Put the beams over the pipes, or the pipes under the beams

Under the beams - no way, pipes above joists, beams rest on joists. So it's gotta be over then.

^woody^ said:
Surely the beams are above the existing rafters in the first place?

above the existing rafters?? You mean just under the roof?

^woody^ · 30 Oct 2020

LOL Rafters.

Perhaps it was one of FMT's drawings

Anyway, beams should be above the joists not on them - when the beam deflects it will crack the ceiling if it touches the joists. So you should have space between the beam and the ceiling below it

Otherwise, why can't they go up and over?

Have you got a photo or something of the situation there?

LikeMyHome · 30 Oct 2020

Picture attached.

Steel Beams And Pipes 2

LikeMyHome
30 Oct 2020

If I route pipes over beams than pipes will be squeezed by floor boards on top of joists. I can of course run pipes over the floor - but I don't want ugly pipes inside the room. Am I missing something??

Bilabong007 · 31 Oct 2020

Could you run them inside the stud work of the wall?

^woody^ · 31 Oct 2020

If you can't take the pipework along the outer side of the beam, they can go under the beam in that gap. Likewise for the water pipe.

Is there scope for raising the beam slightly? And hanging the joists lower.

Don't forget the new floor joists will be higher than the ceiling joists and can be notched.

LikeMyHome · 1 Nov 2020

Bilabong007 said:
Could you run them inside the stud work of the wall?

They would need to cross steel beams anyway if not in this part of the loft then at another place.

LikeMyHome · 1 Nov 2020

^woody^ said:
If you can't take the pipework along the outer side of the beam, they can go under the beam in that gap. Likewise for the water pipe.

Is there scope for raising the beam slightly? And hanging the joists lower.

the beams will lie on top of walls (external and internal) which are nearly flash with the loft floor. The only way I see to raise them is to build an extra layer of bricks on top of the walls - I think our SE won’t be happy with this, but I’ll ask I him once he finishes the drawings.

Bilabong007 · 1 Nov 2020

LikeMyHome said:
They would need to cross steel beams anyway if not in this part of the loft then at another place.

But surely your building walls ontop of the steel and could run the pipes shin high round the room or just have them come through the sole plate up and over at the steel/soleplate junction.

diynot

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How do you put RSJ/UB above existing pipework?

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