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hr @ EQ.32-2 of UBC97, Section 1632

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One-story structure composed of 2 areas:
(1) area 1 (gymnasium): 100'x170' w/ 30' high roof.
(2) area 2 (office): 30'x140' w/ 20' high roof.
these 2 areas are attached (170' to 140') with common
structural wall.

Question: a mechanical equipment located at area 2
(above 20' high roof), to design the lateral force per
EQ.32-2 of UBC97, Section 1632, no problem to set
hx=20', but how about hr? (30'? or 20'?)

Please give your opinion, thanks,

James Lin
IDS, Inc.

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