# Capacity of steel column calculator

Jonathan Ochshorn

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Directions: Enter values for cross section, ASTM designation (for Fy and Fu), effective length coefficient, and unbraced height.

Press "update" button.

More detailed explanations and examples can be found in the text.

 section type Area (in2) least radius of gyration (in.) W4 - W8 W10 - W12 W14 - W16 W18 - W21 W24 - W27 W30 - W36 W40 - W44 C - channel MC - channel L equal legs (connected thru one leg only) L unequal legs (connected thru longer leg) HSS rectangular HSS round Pipe Plate ASTM designation selected: Fy (ksi) E (ksi) use preferred values A36 A992 A500 Gr. B (rect) A500 Gr. B (round) A53 Gr. B use other values Used only if 'other values' selected -> choose cross section W4×13 W5×16 W5×19 W6×8.5 W6×9 W6×12 W6×16 W6×15 W6×20 W6×25 W8×10 W8×13 W8×15 W8×18 W8×21 W8×24 W8×28 W8×31 W8×35 W8×40 W8×48 W8×58 W8×67 W10×12 W10×15 W10×17 W10×19 W10×22 W10×26 W10×30 W10×33 W10×39 W10×45 W10×49 W10×54 W10×60 W10×68 W10×77 W10×88 W10×100 W10×112 W12×14 W12×16 W12×19 W12×22 W12×26 W12×30 W12×35 W12×40 W12×45 W12×50 W12×53 W12×58 W12×65 W12×72 W12×79 W12×87 W12×96 W12×106 W12×120 W12×136 W12×152 W12×170 W12×190 W12×210 W12×230 W12×252 W12×279 W12×305 W12×336 W14×22 W14×26 W14×30 W14×34 W14×38 W14×43 W14×48 W14×53 W14×61 W14×68 W14×74 W14×82 W14×90 W14×99 W14×109 W14×120 W14×132 W14×145 W14×159 W14×176 W14×193 W14×211 W14×233 W14×257 W14×283 W14×311 W14×342 W14×370 W14×398 W14×426 W14×455 W14×500 W14×550 W14×605 W14×665 W14×730 W16×26 W16×31 W16×36 W16×40 W16×45 W16×50 W16×57 W16×67 W16×77 W16×89 W16×100 W18×35 W18×40 W18×46 W18×50 W18×55 W18×60 W18×65 W18×71 W18×76 W18×86 W18×97 W18×106 W18×119 W18×130 W18×143 W18×158 W18×175 W18×192 W18×211 W18×234 W18×258 W18×283 W18×311 W21×44 W21×50 W21×57 W21×48 W21×55 W21×62 W21×68 W21×73 W21×83 W21×93 W21×101 W21×111 W21×122 W21×132 W21×147 W21×166 W21×182 W21×201 W24×55 W24×62 W24×68 W24×76 W24×84 W24×94 W24×103 W24×104 W24×117 W24×131 W24×146 W24×162 W24×176 W24×192 W24×207 W24×229 W24×250 W24×279 W24×306 W24×335 W24×370 W27×84 W27×94 W27×102 W27×114 W27×129 W27×146 W27×161 W27×178 W27×194 W27×217 W27×235 W27×258 W27×281 W27×307 W27×336 W27×368 W27×539 W30×90 W30×99 W30×108 W30×116 W30×124 W30×132 W30×148 W30×173 W30×191 W30×211 W30×235 W30×261 W30×292 W30×326 W30×357 W30×391 W33×118 W33×130 W33×141 W33×152 W33×169 W33×201 W33×221 W33×241 W33×263 W33×291 W33×318 W33×354 W33×387 W36×135 W36×150 W36×160 W36×170 W36×182 W36×194 W36×210 W36×232 W36×256 W36×231 W36×247 W36×262 W36×282 W36×302 W36×330 W36×361 W36×395 W36×441 W36×487 W36×529 W36×652 W36×800 W40×149 W40×167 W40×183 W40×211 W40×235 W40×264 W40×278 W40×294 W40×327 W40×331 W40×392 W40×199 W40×215 W40×249 W40×277 W40×297 W40×324 W40×362 W40×372 W40×397 W40×431 W40×503 W40×593 W44×230 W44×262 W44×290 W44×335 C3×3.5 C3×4.1 C3×5 C3×6 C4×4.5 C4×5.4 C4×7.2 C5×6.7 C5×9 C6×8.2 C6×10.5 C6×13 C7×9.8 C7×12.2 C7×14.7 C8×11.5 C8×13.7 C8×18.5 C9×13.4 C9×15 C9×20 C10×15.3 C10×20 C10×25 C10×30 C12×20.7 C12×25 C12×30 C15×33.9 C15×40 C15×50 MC3×7.1 MC4×13.8 MC6×6.5 MC6×7 MC6×12 MC6×15.1 MC6×16.3 MC6×15.3 MC6×18 MC7×19.1 MC7×22.7 MC8×8.5 MC8×18.7 MC8×20 MC8×21.4 MC8×22.8 MC9×23.9 MC9×25.4 MC10×6.5 MC10×8.4 MC10×22 MC10×25 MC10×28.5 MC10×33.6 MC10×41.1 MC12×10.6 MC12×31 MC12×35 MC12×40 MC12×45 MC12×50 MC13×31.8 MC13×35 MC13×40 MC13×50 MC18×42.7 MC18×45.8 MC18×51.9 MC18×58 L2×2×1/8 L2×2×1/4 L2×2×5/16 L2×2×3/8 L3×3×3/16 L3×3×1/4 L3×3×3/8 L3×3×1/2 L4×4×1/4 L4×4×3/8 L4×4×1/2 L4×4×3/4 L5×5×5/16 L5×5×7/16 L5×5×5/8 L5×5×7/8 L6×6×5/16 L6×6×1/2 L6×6×3/4 L6×6×1 L8×8×1/2 L8×8×5/8 L8×8×7/8 L8×8×1-1/8 L3×2×1/4 L3×2×5/16 L3×2×3/8 L3×2×1/2 L3×2-1/2×1/4 L3×2-1/2×5/16 L3×2-1/2×3/8 L3×2-1/2×1/2 L3-1/2×2-1/2×1/4 L3-1/2×2-1/2×5/16 L3-1/2×2-1/2×3/8 L3-1/2×2-1/2×1/2 L4×3×1/4 L4×3×3/8 L4×3×1/2 L4×3×5/8 L4×3-1/2×1/4 L4×3-1/2×5/16 L4×3-1/2×3/8 L4×3-1/2×1/2 L5×3×1/4 L5×3×5/16 L5×3×3/8 L5×3×1/2 L5×3-1/2×1/4 L5×3-1/2×3/8 L5×3-1/2×1/2 L5×3-1/2×3/4 L6×3-1/2×5/16 L6×3-1/2×3/8 L6×3-1/2×1/2 L6×4×3/8 L6×4×1/2 L6×4×5/8 L6×4×7/8 L7×4×3/8 L7×4×1/2 L7×4×5/8 L7×4×3/4 L8×4×1/2 L8×4×5/8 L8×4×3/4 L8×4×1 L8×6×1/2 L8×6×5/8 L8×6×7/8 L8×6×1 HSS2×2×3/16 HSS2×2×1/4 HSS2-1/2×2-1/2×3/16 HSS2-1/2×2-1/2×5/16 HSS3×3×3/16 HSS3×3×3/8 HSS3-1/2×3-1/2×3/16 HSS3-1/2×3-1/2×3/8 HSS4×3×3/16 HSS4×3×3/8 HSS4×4×1/4 HSS4×4×1/2 HSS6×4×1/4 HSS6×4×1/2 HSS6×6×1/4 HSS6×6×5/8 HSS8×4×1/4 HSS8×4×5/8 HSS8×8×1/4 HSS8×8×5/8 HSS12×4×1/4 HSS12×4×5/8 HSS12×8×1/4 HSS12×8×5/8 HSS12×12×1/4 HSS12×12×5/8 HSS16×4×5/16 HSS16×4×5/8 HSS16×8×5/16 HSS16×8×5/8 HSS16×12×5/16 HSS16×12×5/8 HSS16×16×3/8 HSS16×16×5/8 HSS20×4×3/8 HSS20×4×1/2 HSS20×8×3/8 HSS20×8×5/8 HSS20×12×3/8 HSS20×12×5/8 HSS1.660×0.140 HSS1.990×0.120 HSS1.990×0.188 HSS2.375×0.125 HSS2.375×0.250 HSS2.500×0.125 HSS2.500×0.250 HSS3.000×0.125 HSS3.000×0.250 HSS3.500×0.125 HSS3.500×0.313 HSS4.000×0.125 HSS4.000×0.313 HSS6.000×0.250 HSS6.000×0.500 HSS8.625×0.250 HSS8.625×0.625 HSS10.000×0.250 HSS10.000×0.625 HSS12.750×0.375 HSS12.750×0.500 HSS14.000×0.375 HSS14.000×0.625 HSS16.000×0.375 HSS16.000×0.625 HSS18.000×0.500 HSS20.000×0.500 Pipe 2 Std. Pipe 2½ Std. Pipe 3 Std. Pipe 3½ Std. Pipe 4 Std. Pipe 5 Std. Pipe 6 Std. Pipe 8 Std. Pipe 10 Std. Pipe 12 Std. Pipe 2 x-Strong Pipe 2½ x-Strong Pipe 3 x-Strong Pipe 3½ x-Strong Pipe 4 x-Strong Pipe 5 x-Strong Pipe 6 x-Strong Pipe 8 x-Strong Pipe 10 x-Strong Pipe 12 x-Strong Pipe 2 xx-Strong Pipe 2½ xx-Strong Pipe 3 xx-Strong Pipe 4 xx-Strong Pipe 5 xx-Strong Pipe 6 xx-Strong Pipe 8 xx-Strong 1/4 in. thick 3/8 in. thick 1/2 in. thick 5/8 in. thick 3/4 in. thick 7/8 in. thick 1 in. thick 1-1/8 in. thick 1-1/4 in. thick 1-3/8 in. thick 1-1/2 in. thick unbraced length, L (ft) Pinned at both ends Fixed at one end; pinned at the other Fixed at one end; only horiz translation at the other end Fixed at both ends Fixed at one end; free at the other end (cantilever) Pinned at one end; only horiz translation at the other end Checks: errors: plate width must be > 0 Fy must be > 0 E must be > 0 unbraced length, L must be > 0 KL/r should be <= 200