okotoks equestrian facility roof collapse

[kanedog]

They got roofied.

 

[skegpro]

Sources tell me it was built by integrity post structures.

90'x200' with single ply Truss.

 

[Mike270412]

How long ago?

Sources tell me it was built by integrity post structures.

90'x200' with single ply Truss.

 

[skegpro]

How long ago?

https://integritypoststructures.com/riding-arena-featured-project/

Not sure.

 

[skegpro]

So my shed has a is designed for a snowload of 48lbs/sqft.

Single ply Truss, 80x200x20, 2"x8" 4 ply posts 4ft on center.

Hopefully this never happens to me.
Have slate colored tin, so any amount of sun it's avalanche city.

Talking with a couple people turns out you can still hit commercial spec with single ply trusses but there are some design requirements around pole types and span.
I guess when you go above 80ft things change.

 

[niner]

Have done lots of 80’ trusses single ply. Have done as wide as 100’ 2 ply. We always recommend the customer price out heavier trusses at least 60 lb and some have gone to 80 lb. Who wants to shovel snow off a roof with 20’ walls? Problem with snow is stresses the truss plates. Your roof can handle the weight for awhile, but over time the loading and unloading has stressed the plates. So in this instance may not have seemed like a lot of snow but the damage has already been done in the previous years. When you get your trusses delivered you get a engineered drawing of the placement of your truss bracing. In the small print is all the other bracing also required. I would put money on it that your trusses are not braced to specs. Go up and take a picture of your trusses and the bracing and send me a pm. I will tell you if it’s done correct.

 

[Trukker]

We haven't had any significant snow that lasted for the last few years around here .

 

[skegpro]

Have done lots of 80’ trusses single ply. Have done as wide as 100’ 2 ply. We always recommend the customer price out heavier trusses at least 60 lb and some have gone to 80 lb. Who wants to shovel snow off a roof with 20’ walls? Problem with snow is stresses the truss plates. Your roof can handle the weight for awhile, but over time the loading and unloading has stressed the plates. So in this instance may not have seemed like a lot of snow but the damage has already been done in the previous years. When you get your trusses delivered you get a engineered drawing of the placement of your truss bracing. In the small print is all the other bracing also required. I would put money on it that your trusses are not braced to specs. Go up and take a picture of your trusses and the bracing and send me a pm. I will tell you if it’s done correct.

Thx, I'll grab some shots tomorrow.
Can a guy beef up the trusses after the fact to bring the snow load up to 80lb?

 

[niner]

And yes I’ve put up my fair share of trusses. Been doing this for 30 years. If you think agricultural buildings don’t have strict guidelines think again.

 

[niner]

Thx, I'll grab some shots tomorrow.
Can a guy beef up the trusses after the fact to bring the snow load up to 80lb?

I would make sure what you have is properly braced to begin with. You would have to get your trusses reengineered to see what could be done to get to 80 lb.

 

[skegpro]

I would make sure what you have is properly braced to begin with. You would have to get your trusses reengineered to see what could be done to get to 80 lb.

True, I was also just thinking 48lbs/sqft on a roof that is 16,000+ sqft is a lot of weight.
768,000lbs!

But how much snow would it take to bring that down?

Apparently 10" of ice.
Or 2.66ft of snow.

I can only conclude that this bitch is gonna collapse some day.

But the failure in Okotoks doesn't appear to have much snow or ice on the roof at all.........

 

[mick]

I'll guarantee you there was a foot of ice built up on that roof, plus wind loads and light ass trusses