Perforated Shearwall Design

[tajmeaw]

Section 2305.3.8.2.1.2 of the IBC 2006 reads as follows:
"The allowable shear set forth in Table 2306.4.1 shall not exceed 490 plf"

I am interpreting that as the maximum value you can take from the table is 490 plf, but then you can use the 40% increase as allowed in Section 2306.4.1.

Am I correct in my thinking or is 490 plf the maximum total you can use?

 

[WillisV]

Correct - that is the Tabulated value you are comparing to the 490 - then for wind can take an increase of 1.4 so max usable total for wind is 686

 

[woodman88]

No. The shear capacities in the table are increased for wind. So that the table value of 490 for seismic becomes 686 for wind.

Garth Dreger PE
AZ Phoenix area