Marlou,
If there are accessible areas the minimum live load is 100; but be really careful since even in an inaccessible area the landscaping weight can be much higher than 100 psf. 300 psf would be more likely.
From: Marlou Rodriguez [mailto:mbrodrig@mbrodriguez.com]
Sent: Tuesday, January 22, 2008 1:49 PM
To:
Subject: Roof Gardens Live load
We do several jobs were we have live roofs (roofs with a gardens, not necessary accessible after construction). Based on ASCE 7-05 table 4-1, the live load should be designed for 100 psf. Can anyone clarify if this is only for roofs with gardens that is accessible.
Any help would be great.
Thanks.
Marlou