ASCE 7-02 1

[jike]

For buildings greater than 60 feet, the C & C wall pressures are the same for the full height of the building per Figure 6-17.

Is there any provision in ASCE 7-02 to use less wall pressure on the wall elements that are near the base of the structures?

 

[WillisV]

Not that I am aware of without a wind tunnel study. Normally suction controls C&C design and these pressures do not tend to vary along the shielded (leeward) side of the building.

 

[blake989]

the velocity pressure (q) decreases with elevation on a building with h > 60'.

 

[WillisV]

Blake989 - while that is true for the windward side of the building you are required to use qh (q at the maximum height of the building) for the leeward side and since each side could be the leeward side, the suction C&C pressures are constant over the height of the building.