Question: Determine the maximum allowable spacing of nominal 2 X 4-in (50 X 100-mm) studs for a wall form sheathed with nominal I-in. (25-mm) lumber. Assume that the sheathing is continuous over three or more spans and is Hem-Fir. Limit deflection to Y240 of the span length. The design load is 600 lb/sq ft (28.7 kPa).