Roof Live Load for Agricultural Buildings in IBC

[PSwan]

The UBC had a category for roof live load for greenhouses, lath houses and agricultural buildings of 10 psf (Table 16-C). I'm designing my first ag building under the IBC and can find no such provision. Must I double to 20 psf for flat roofs now?
Thanks
-PSwan

 

[dgkhan]

Yes.
Check with city engineer who is going to issue permit if he allows you for 10 PSF. Otherwise you have to go with 20 psf minimum live load.

 

[msquared48]

If the slope of your greenhouse roof is enough, you will still be able to reduce the 20 psf load though.

Mike McCann
MMC Engineering