The maximum spacing between shores for 2 inch thick sheeting with nonstress grade lumber is:

The maximum spacing between shores for 2 inch thick sheeting with nonstress grade lumber is:

• A. 2 feet
• B. 3 feet
• C. 4 feet
• D. 6 feet

Answer: (C)

When installing sheathing, temporary shores must be spaced so the sheet doesn’t deflect between supports while it’s fastened. The thickness and grade of the sheeting influence how stiff it is; with 2 inch thick sheeting and non-stress grade lumber, the material is relatively less stiff, so you need closer support to keep the sheet flush and to carry the load until it’s braced. Four feet is the maximum spacing that provides adequate support without risking sag or gaps. Placing shores closer than that would be more protective but not necessary for this case, while spacing them farther apart like six feet would allow too much deflection. Thus, four feet is the correct maximum spacing.

When installing sheathing, temporary shores must be spaced so the sheet doesn’t deflect between supports while it’s fastened. The thickness and grade of the sheeting influence how stiff it is; with 2 inch thick sheeting and non-stress grade lumber, the material is relatively less stiff, so you need closer support to keep the sheet flush and to carry the load until it’s braced. Four feet is the maximum spacing that provides adequate support without risking sag or gaps. Placing shores closer than that would be more protective but not necessary for this case, while spacing them farther apart like six feet would allow too much deflection. Thus, four feet is the correct maximum spacing.