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TABLE 2308.3A HEADER SPANS" FOR EXTERIOR BEARING WALLS (MAXIMUM HEADER SPANS FOR DOUGLAS RR-LARCH, HEM-FlR, SOUTHERN PINE, AND SPRUCE-PlNE-FlR2 AND REQUIRED NUMBER OF JACK STUDS) BuIldIng WldIh3 (II) zo 21 36 ....... Supplll1lDy. - s.- NJ s.- NJ Spen NJ Roof, Ceiling4 2-2x4 3-6 I 3-2 I 2-10 I 2-2m 5-5 I 4-8 1 4-2 I 2-2x8 6-10 I 5-H'- 2 54 2 2-2x10 8-5 2 7-3 2 6-6 2 2-2x12 9-9 2 8-S 2 7-6 2 3-2x8 8-4 I 7-S I 6-8 I 3-2x10 10-6 1 9-1 2 8-2 2 3-2x12 12-2 2 10-7 2 9-5 2 4-2x8 9-2 I 8-4 I 7-6 I 4-2x10 11-8 I 10-6 I 9-5 2 4-2x12 14-1 1 12-2 2 10-11 2 - - Notes: NJ - Numbec of jack studs I1lCJUiJM to support eacb end. Where 1he num- ber of I1lCJUiJM jack studs equals I. the header may be S1IpJJOI1ed by a framing lIDCbor attacbcd to 1he fuI1-beigbt wall stud. 1. Spans are gM:n in fi:ct and iDdJcs (It-in). 2. nbuIated wlues assume #2 GnIde IIIIIIber-. 3. BuiIdiag width is measured perpeadicuJar to the ridge. For widths between those shown, spans may be interpolated. 4.Maximum loads: Roof dead load of 20 psf and live load of 20 psf, floor dead load of 10 pst and 1M load of 40 psf. and wall dead load of II psf. TABLE 2308.3A - TABLE 2308.3B TABLE 2308.3B HEADER SPANS1 FOR EXTERIOR BEARING WALLS (MAXIMUM HEADER SPANS FOR DOUGLAS FlR-LARCH, HEII-FIR, SOUTHERN PINE, AND SPRUCE-PlNE-FlR2 AND REQUIRED NUMBER OF JACK STUDS) BuIldIng WfdIh3 (II) zo 21 36 ...... ......... - SlIm NJ SlIm NJ SlIm NJ Roof, Ceiling 2-2x4 3-1 I 2-9 I 2-5 I &: 1 Center- 2-2x6 4-6 I 4-0 I 3-7 2 bearing Floor' 2-2x8 5-9 2 S-O 2 4-6 2 2-2x10 7-0 2 6-2 2 S-6 2 2-2x12 8-1 2 7-1 2 6-5 2 3-2x8 7-2 1 6-3 2 5-8 2 3-2x10 8-9 2 7-8 2 6-11 2 3-2x12 10-2 2 8-11 2 8-0 2 4-2x8 8-1 I 7-3 I 6-7 1 4-2x10 10-1 I 8-10 2 8-0 2 4-2x12 11-9 2 10-3 2 9-3 2 Roof, Ceiling 2-2x4 2-8 1 2-4 I 2-1 1 &: I Clear 2-2m 3-11 I 3-5 2 3-0 2 Span fIoor4 2-2x8 S-O 2 4-4 2 3-10 2 2-2x10 6-1 2 5-3 2 4-8 2 2-2x12 7-1 2 6-1 3 5-5 3 3-2x8 6-3 2 5-S 2 4-10 2 3-2x10 7-7 2 6-7 2 5-11 2 3-2x:12 8-10 2 7-8 2 6-10 2 4-2x8 7-2 I 6-3 2 5-7 2 4-2x10 8-9 2 7-7 2 6-10 2 4-2x12 10-2 2 8-10 2 7-11 2 - - Notes: NJ - Number of jack studs required to support each end. Where the num- ber of required jack studs equals I, the header may be supported by a framing anchor at1ached to the full-height wall stud. 1. Spans are given in feet and inches (R-in). 2. Tabu1aIed wlues assume 12 Grade lumber. 3. Building width is mcasmed perpendicular to the ridge. For widths between those shown, spans may be interpolated. 4. Maximum loads: Roof dead load of20 psf and live load of20 _ psf, floor dead load of 10 psf and live load of 40 psf, and wall dead load of II psf. R.~. \u.... t:b~~ ~ W,,1""1:> 1)~ ~ .. ~." Art.. ~'.> ~Olol \"rru c.,.40 u~ T\f-a. j F' .)Jtot"'!:> "TU ~ ')o...a c~~ (......1) ,.s c..-. \..v..:nJ ~r c). ~ V......, Q.Q s"&"" .Hf C,~ .... '2.1of3/l- FLORIDA BUILDING CODE - BUILDING ~~, ~ S~O~ 1./t.A>t -7) 23.15