Sourcing non-standard joist hangers?

[ST1234]

To minimize floor buildup, the structural engineer has specified doubled-up 175 x 75 (ie. 175 x 150) floor joists for our loft conversion. I am having problems sourcing joist hangers to work with this size, can anyone help?

 

[Pigeon85]

Not sure if its exactly what your after http://www.fix8.co.uk/products/Hang...trong-Tie+JHM175%2F150+175mm+x+150mm/59234124

 

[tony1851]

Instead of doubling the joists up, why not just space them at one-half the spacing specified (ie if your doubled-joists are supposed to be at 400c/s, just put the single joists at 200c/s. Structurally there is no difference.

 

[ST1234]

Thanks, I'll have a look at doing that.

 

[^woody^]

Oh Engineers!

FFS, at least design something that is buildable, not just what the software throws out

 

[pinenot]

Two joist hangers side by side, the ones with no external side flanges work just fine...pinenot

 

[tony1851]

ST1234;

What is your actual span? Two 7x3s @400c/s seems very hefty.

Has your SE considered alternative solutions, or has he just done it the easiest for himself?

 

[^woody^]

Two joist hangers side by side, the ones with no external side flanges work just fine...pinenot

That wont work with masonry hangers, and is very difficult with timber hangers too