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Headers & Beams: Allowable Load Tables. SFPA provides size selection tables for various beam spans and loading combinations for Southern Pine dimension lumber and glulam.
Span tables for visual and mechanical grades of southern pine lumber joists and rafters, and southern pine lumber and glue-laminated timber (glulam) headers, beams and girders. View SPC Span Tables Photo SFPA
Use the drop downs to select your roof load, floor load, house width, and material to calculate the appropriate size of TimberStrand or Parallam header. Calculator is for use in U.S. applications only.
Calculate the size needed for a beam, girder, or header made from No. 2 pine or LVL. Covers any span and every load with pin point accuracy. Double check yourself with these span charts. Works with evenly distributed loads only.
GIRDER SPANS AND HEADER SPANS FOR EXTERIOR BEARING WALLS. (Maximum spans for Douglas fir-larch, hem-fir, southern pine and spruce-pine-fir and required number of jack studs) Girders and Headers Supporting. Size.
Span charts and 2012 IRC building codes for girders and headers. Includes span tables for all load bearing locations and the number of jack studs.
Builder Mike Guertin provides a comprehensive look at header design and discusses how to figure out the right-size header for a given span. He also discusses several alternative designs to the double 2×12 and when they are appropriate: rim-board header, box header, and using a flat 2x instead of a header.
