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Re: Another wind question

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I assume you use the entire area AB B, C, & D to determine wind loading. I also assume height for B & D are plate height to ridge, that was the reason for the questions.
In a message dated 2/4/2008 1:58:26 PM Pacific Standard Time, ECVAl3(--nospam--at) writes:
It looks to me as if pressures zones A&C are wall height, ground to eave, and zones B&D are Eave to Mid-Height of sloped roof.
 Which brings me to my dumb questions, when calculating the roof diaphragm load, is only 1/2 the wall height (zone C) along with the roof, zone D, used and is the pressures of zones A&D used as a partial uniform (or point) load?
Stephen Macie, P.E.
In a message dated 2/4/2008 1:37:27 P.M. Pacific Standard Time, d.topete73(--nospam--at) writes:
Height H = height to mid-height of roof pitch.  or am i misunderstanding your h/2 reference...???

On Feb 4, 2008 1:08 PM, <Jnapd(--nospam--at)> wrote:
We are revising spreadsheet for Wind and I have a dumb question.
When calculating the forces for  horizontal pressure zones A & C I should use the full eave height not h/2 as was done in 2001 CBC correct ?
Joe Venuti
Johnson & Nielsen Associates
Palm Springs, CA

Joe Venuti
Johnson & Nielsen Associates
Palm Springs, CA