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RE: Wind

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Doug,

 

Typically the wind on the underside of an eaves overhang equals that on the adjacent wall surface. For example from ASCE7-05 Fig6-6 Cp=+0.8 for the windward wall, so soffit would experience Cp=+0.8 (upwards), whilst sidewalls experience Cp=-0.7 (downwards), and leeward Cp=-0.5(max. mag.) (downwards). Adopt similar approach for C&C pressures.

 

Not sure where rule is in ASCE7 but it is the approach used to AS1170.2, and I recollect something in commentary to ASCE7-05.

 

 

Regards

Conrad Harrison

B.Tech (mfg & mech), MIIE, gradTIEAust

mailto:sch.tectonic(--nospam--at)bigpond.com

Adelaide

South Australia