Determine the maximum allowable span of nominal 2 × 4 in. (50 × 100 mm) wall form studs carrying a design load of 1000 lb/sq ft (47.9 kPa). Tie stud spacing is 16 in. (406 mm) on center. Use the allowable stresses for Douglas Fir from Table 8 and 7-day load duration.

Assume that studs are continuous over three or more spans. Limit deflection to 1/360 of span length. Based on the maximum allowable span, check for crushing of studs on double 2 × 4 in. (50 × 100 mm) wales.