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The allowable spans of girders and headers fabricated of dimension lumber shall not exceed the values set forth in Tables R602.7(1), R602.7(2) and R602.7(3).
The allowablespans of girders and headers fabricated of dimension lumber shall not exceed the values set forth in Tables R602.7(1), R602.7(2) and R602.7(3) ...
Roof-ceiling framing above wall openings shall be supported on headers. The allowablespans for headers in load-bearing walls shall not exceed the values set forth in Section R603.6 and Tables R603.6(1) through R603.6(6) ...
), R602.7(2) and R602.7(3). TABLE R602.7(1) GIRDERSPANS a AND HEADERSPANS a FOR EXTERIOR BEARING WALLS (Maximum spans for Douglas fir-larch, hem-fir ...