Parking Shed Drifting Limit??

[TekEngr]

someone can guide me with code reference, what should be drifting limit for this kind of open parking shed ??
roof cladding is steel sheet.

 

[dold]

For something like this, I'm assuming youre talking about wind. There aren't any hard and fast drift limits for wind like there are for seismic. (there are recommendations in the ASCE7 commentary). Any limits are more rules of thumb depending on the owner's design requirements and engineering judgement.
But since this is a parking shed...i'd probably ignore any sort of drift limit. As long as it's not bumping in to anything, and it is stiff enough to keep it from fluttering in the wind I'd think you'll be ok. Obviously 12" of movement is proably excessive, but if you try to hold to H/400 or H/200 like you would for a building, youre going to end up with huge members. The snow shed in my parking lot is made of "cantilevered" 3x3 aluminum tubes --- wedgebolted into asphalt. I have no idea how it's standing up.

 

[1503-44]

3x3? Must be filled columns. Hope your vehicle is insured.

 

[MIStructE_IRE]

There aren’t any limits really. I generally take a view on a case by case basis. Its about people’s perception of safety. If my granny was standing there and saw 75mm of sway she might feel unsafe... she might not even notice 25mm though..