Method 1 - ASCE 7-02

[fbaxley]

If I need to calculate the design pressure (DP rating) for windows for an architect of a residential structure is it correct to calculate the surface area of each window and then plug that value into Figure 6-3 ASCE 7-02 under the appropriate wind speed and wall zone to come up with a DP rating for each different size window? Or is the effective wind area in this situation the surface area of the wall that several windows are located? This particular architect wants to illustrate the window dp ratings for each window on his elevations.

 

[JAE]

It should be the window area if the purpose of needing the wind is to design the window pane and frame. The component wind loads are based on the statistical probability of a particular peak pressure over a set area.

If you are designing the framing that supports the window frame (such as adjacent wall studs and headers) then the area would be that tributary area of wind that each piece individually resists.

 

[DaveAtkins]

I would also add that ASCE 7-02 may not apply to a residential structure.

DaveAtkins

 

[fbaxley]

DaveAtkins,

Fig 6-3 in ASCE 7-02 is this same as Table R301.2(2) in IRC 2003. Why would ASCE 7-02 not apply to a residential structure?

 

[DaveAtkins]

In my State (Wisconsin), the IRC is not accepted, but the IBC is accepted. One and Two Family Dwellings have an old Code which has not changed for years.

DaveAtkins