No, strapping is typically 1x3s, are below ceiling joists, and generally spaced 18 or 24 inches on center. Strongbacks are located ABOVE the ceiling joists, generally 2x8 all the way up to 4x12s and usually spaced 6 to 8 FEET apart. The size of the strongback is determined by the perpendicular span to the ceiling joists that they must span.
Last edited by Exeric; 11-11-12 at 04:20 PM..
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