Snow loads for a canopy with an open bar grate roof

[YukonOne]

Any one out there have a feel for what kind of snow loads to use for a 150 sf canopy that is an architectural feature on the exterior of a building. The interesting thing is the roof is more like a sunshade than a roof as it is all aluminum bar grate with 1-3/16" spaces between the bars.

Full snow seems excessive, no snow seems too light.

Thoughts??

 

[COEngineeer]

How thick is the grate?

Never, but never question engineer's judgement

 

[jike]

Design it for snow or ice loads, whichever is heavier. You might also check with the manufacturer to see what design loads they are normally seeing from the A/E's