Question: Determine the maximum allowable span of nominal 2 X 4-in. (50 X 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 13-8 and 7-d load duration. Assume that studs are continuous over three or more spans. Limit deflection to YJ60 of span length. Based on the maximum allowable span, check for crushing of studs on double 2 X 4 in. (50 X 100 mm) wales.