Strap bracing for roof purlin

[JStructsteel]

Looking at options for bracing ZS purlins, and came up with strap bracing over bolted or welded angles, etc.

Anyone ever done this? Would it make sense to call it out continuous, i.e. they just weave it in and out each space? Then lap at a joint as needed?

Thanks

 

[GeorgeTheCivilEngineer]

I'd call that a herringbone strut, sometimes seen in timber floors (although a bit old fashioned now, still available to buy).

 

[JStructsteel]

I'd call that a herringbone strut, sometimes seen in timber floors (although a bit old fashioned now, still available to buy).

My thoughts was a roll of strapping, they can put in as much as they can.

Doesn't need compressive strength, since a X

 

[DanKile]

I've only using this strapping going straight from flange to flange (not crossing). Its a lot easier for the erector to not have to weave the strapping through the purlins.

You could calc the purlins with one flange attached to panel and not have the strapping at all. That B-deck will be far stronger than any strapping.

 

[GeorgeTheCivilEngineer]

My thoughts was a roll of strapping, they can put in as much as they can.

Doesn't need compressive strength, since a X

I think 'strut' is just a historical term rather than any literal compression meaning.

https://www.screwfix.com/p/simpson-strong-tie-herringbone-joist-struts-480mm-25-pack/765TJ

Getting the right tension might be a challenge using rolls of strapping.

 

[Harbringer80]

This is bridging it's used all the time for wood IJ's (Simpson tension bridging, TB or similar). Also used for cold formed CFS purlins functionally the same idea. No need for the strap to be continuous.

 

[Tomfh]

What’s driving this? Why not normal purlin bracing?