29 1 8 Chapter 24 



Table 24-^.— Fastener performance criteria for APA RATED SHEATHING® panels 



nailed with 6d common smooth-shanked nails and tested according to American Plywood 



Association Test Method S-4 (American Plywood Association 1980) 



End use Minimum ultimate load 



and exposure condition' Lateral Withdrawal 



Pounds 



Wall 



Dry 120 Not applicable 



Wet/redry 90 Not applicable 



Roof 



Dry 120 20 



Wet/redry 90 15 



Subfloor 



Dry 210 20 



Wet/redry 160 15 



Wet/redry is exposure to three days of continuous wetting followed by testing dry. 



Linear expansion. — Criteria are the same as those listed in the previous sub- 

 section describing APA RATED STURD-I-FLOOR® panels, except that thick- 

 ness swell is not limited during Test Methods APA P-2 and P-3. 



Stability. — The stability index shall be 5.2 or greater as computed by equa- 

 tion 24-1. 



Bond durability. — Criteria are the same as those discussed in the prior 

 paragraph describing bond durability of APA RATED STURD-1-FLOOR®, 

 except that composite and wood-based panels (not including those composed 

 entirely of veneer) shall satisfy the structural performance requirements de- 

 scribed by tables 24-5, 24-6, and 24-8 (instead of tables 24-3 and 24-4) after 

 being wetted and redryed by American Plywood Association Test Method D- 1 . 



Mold and bacteria resistance. — Criteria are the same as those specified in 

 the previous sub-section for APA RATED STURD-I-FLOOR® panels. 



Dimensional tolerance and squareness of panels. — The criteria are the 

 same as those specified in the previous sub-section for APA RATED STURD-I- 

 FLOOR® panels. 



Moisture content.— As for APA RATED STURD-I-FLOOR® panels, mois- 

 ture content of sheathing panels shall not exceed 1 8 percent of their ovendry 

 weight. 



