Windposts

[Moonshine]

I need a couple windposts in my build, I have never come across them before.

From my googling they don't seem an off the peg purchase.

Anyone got any ideas where I can get them and typical costs?

[PeterW]

What’s the spec from the SEng..?

 

Last ones we did were inserted into the outer skin on some 12m block walls and they were just 150mm box section from memory with welded end plates and welded tabs.
 

These were bolted to the founds and then built in. They are nothing special for a steel fabricator to add to the steel order I expect. 
 

Not sure where you’re located but ACS do them in standard sizes 

[tonyshouse]

Sounds huge, how high were they, I did some once 50x50 box with tabs on for every block course up the middle of the gable only. 

[Conor]

We used 80mm square post and welded heavy straps to it. Single storey.

Edited July 2, 2021 by Conor

[PeterW]

13 minutes ago, tonyshouse said:

Sounds huge, how high were they

6.5m or so with a slab side onto a very large (12x12m) room. 

[Dudda]

You need a structural engineer. Wind posts have to be designed for the building. They can be steel, reinforced concrete, etc and need to be sized to suit. Often they may be sized to suit the buildup. eg 100mm steel post in a 100mm blockwork wall. A project I'm working on is an exposed elevated site in the west of Ireland a few hundred meters from the Atlantic and has 450 x 215mm reinforced concrete windposts. The 215mm is to match the block on flat wall. In other areas the windposts are 215x215mm. That's an extreme case but gives you the idea of how they need to be specially designed.

[markc]

 450 x 215mm reinforced concrete windposts.  OMG! thats some windpost

[Moonshine]

3 hours ago, PeterW said:

What’s the spec from the SEng..?

 

This is what is on the drawings.

 

 

[markc]

Ancon are based in Sheffield and supply a lot of specialist Stainless steel building products

[Temp]

Looks like your SE has suggested a mix of C and box sections from them specifically. Lots of info on their site..

 

https://www.ancon.co.uk/products/windposts

 

[PeterW]

All standard stuff then. 
 

You need to know a few bits of detail to order them but U.K. Lintels do them so why not bundle all your steelwork up for a price

 

https://uklintels.com/product-range/windposts/

[Mr Punter]

The Ancon stainless ones are expensive but decent spec.  They seem to work by making them easy for the SE to specify and the builder to install.  They have slots for wall ties and different top connection options.  Once they are built in they act in tandem with the masonry.  We have lots where there are just skinny piers between openings that would otherwise fail.