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Re: ap and Rp of UBC97 for Suspended Equipment

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James Lin wrote:

Question.
     
What are the ap (1.0 or 2.5) and Rp (3.0 or 1.5) values 
per UBC97 Table 16-O for the items below: (1)suspended 
monorail and conveyor track system (steel hanger supports 
to the roof above with lateral spray bracing)
(2)suspended AC units (steel hanger supports to the 
roof above with lateral spray bracing)
     
Thanks in advance,
     
James Lin
IDS, Inc.   

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For equipment items with splay beacing, I would use Item 3B of 1997 UBC Table 
16-O, resulting in ap = 1.0 and Rp = 3.0.  Please read all 8 footnotes for this 
item.

Item 3C is not intended to apply to suspended equipment; it is intended for 
equipment supported at its base

Rick Drake, SE
Fluor Daniel, Aliso Viejo