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Tanque DISEÑO DE TANQUE PARA AGUA METALICO ELEVADO Tamaño real de lámina Tamaño Real Ancho 6 pies 5.97 1.82 m Largo 20 pies 19.95 6.08 m Peso agua 1000 kg/m3 Dámetro 6.7 m Ing. Rivera Numero de anillos 4 Honduras Altura 7.28 m Vtanque 283.95 m3 Capacidad 75011.1 Gal Acero estructural A-36 36000 lb/pulg2 f'c 280 kg/cm2 fy 2800 kg/cm2 REVISION DE ESPESORES Espesores de tanque th =2.6hDg/fE E = 0.35 Para tanque simple y soldadura continua Primera fila anillo 4 th = 0.19 pulg 4.95 mm < 9 mm Segunda fila anillo 3 th = 0.15 pulg 3.71 mm < 7 mm Tercera fila anillo 2 th = 0.10 pulg 2.48 mm < 5 mm Cuarta fila anillo 1 th = 0.05 pulg 1.24 mm < 5 mm 6.7 Diseño de torre 5 1.15 Numero de columnas, N = 6 Altura de torre, HT = 10 m 5 Diametro de torre 8.7 m Peso acero A-36 7849 kg/m3 5 Numero de espacios, Nesp. = 4 7.28 Lamina de acero 5 mm 7 Altura Techo inclinado 1.15 m Longitud inclinada techo 3.5419 m 9 Area techo 39.41 m2 Peso de techo 1546.70 kg 9 2.5 1.55 Lamina de fondo 9.00 mm Altura fondo de tanque 1.55 m Longitud inclinada 3.6912 m Area fondo tanque 42.80 m2 2.5 Peso fondo 3023.73 kg 10 Area anillo 35.26 m2 2.5 Peso anillo 1 1503.15 kg Peso anillo 2 1503.15 kg Peso anillo 3 2104.42 kg Peso anillo 4 2705.68 kg 2.5 Wtanque vacio 12386.83 kg Waditamientos (10%) 13625.51 kg 8.7 Peso real tanque vacio 13.63 ton Wtanque lleno 297.580 ton FUERZAS DE VIENTO v = 100 mph 160.93 kph Presion=.00483V2 125.09 kg/m2 SECCION PRESION AREA FACTOR FVIENTO BRAZO M kg/m2 m2 (AWWA 3.1.4) kg m kg-m Cubierta techo 125.09 3.85 0.5 240.95 17.66 4255 Cilindro techo 125.09 48.77 0.6 3660.17 13.64 49925 Fondo tanque 125.09 5.19 0.5 324.76 9.48 3079 WF 12x12 125.09 18.42 2.0 4608.30 5.00 23042 8834.19 80300.29 FUERZA SISMICA (AWWA D-100 C 13-1) Zona sismica = 3 m Htorre = 10 m Dtorre = 8.7 m Htanque = 7.28 m Dtanque = 6.7 m Ncol = 6 Fs =ZIKCSWtanque lleno Z I K S J H' 0.75 1.0 2.5 1.5 0.091 13.64 T=JH'/(D).5 = 0.42 C =1/15(T)0.5 = 0.10 CS = 0.15 . Fs = 83.69 ton Ms =FsH' = 1141.53 ton-m (6 columnas) F' =M/Htorre = 114.15 ton/m fn =F'/Ncol = 19.03 ton COMBINACION DE FUERZAS DESCRIPCION Pn = (-1)W/N ± 2M/R'N SUMA Sentido kg Carga Tanque vacio + viento -2270.92 7990.08 -10261.00 Abajo (uplift) 5719.16 Arriba Tanque lleno + viento -49596.67 7990.08 -57586.75 Abajo -41606.59 Abajo Tanque lleno sin viento -49596.67 -49596.67 Abajo Tanque lleno + sismo -49596.67 113585.07 -163181.74 Abajo 63988.40 Arriba Por viento = 1.16 < 1.25 Usar 25% de incremento en esf. admisibles Por sismo = 3.29 > 1.33 Usar 33.333% de incremento en esf. admisibles Columnas DISEÑO DE COLUMNAS SECCION WF Peso Numero de columnas, N = 6 1 to 21 14" x 14" Altura de torre, Htorre = 10 m 22 to 35 12" x 12" Numero de espacios, Ne = 4 36 to 49 10" x 10" Altura de espacios, Hesp. = 2.5 m 50 to 59 8" x 8" Pn max = 163181.74 kg 0.75Pnmx = 122386.30 kg ALAS Espesor Seccion Altura Ancho Espesor Alma Numero de seccion 27 pulg pulg pulg pulg Tipo de seccion WF 12"x 12" 12.25 12.04 0.671 0.43 Area = 21.16 pulg2 W = 72 lb/pie 0.671 Ix = 597.4 pulg4 Sx = 97.5 pulg3 rx = 5.31 pulg Iy = 195.3 pulg4 0.43 12.25 Sy = 32.4 pulg3 ry 3.04 pulg Kx = 1 0.671 Ky = 0.85 12.04 Kxl/rx = 47.08 Kyl/ry = 69.90 Fax = 15930 lb/pulg2 ? Fay = 14620 lb/pulg2 ? fa =Pn/A = 12747.6 < 14620 DISEÑO DE VIGAS Numero de vigas, Nv = 18 Lv = 3.85 m H = F' = 114.15 ton/m TDH 19.03 ton 41.93 kips SECCION CUAD Peso 1 to 3 16" x 16" 4 to 7 14" x 14" 9 to 12 12" x 12" 14 to 18 10" x 10" 20 to 25 8" x 8" 27 to 31 7" x 7" 33 to 37 6" x 6" 39 to 37 5" x 5" Numero de seccion, Ns = 37 SECCION CUADRADA 6" x 6" 0 3/16 A = 27.55 cm2 4.27 pulg2 Ix = 990.64 cm4 23.8 pulg4 Sx = 129.95 cm3 7.93 pulg3 rx = 5.99 cm 2.36 pulg ry = 5.99 cm 2.36 pulg W = 21.62 kg/m 14.53 lb/pie REVISION POR COMPRESION fa = 9819.67 lb/pulg2 Kx = 1 Ky = 0.85 Kxl/rx = 64.2 Kyl/ry = 54.59 Fax = 14990 lb/pulg2 16655.5555555556 Fay = 15554 lb/pulg2 17282.2222222222 REVISION POR TENSION Ft =0.6Fy 21600 lb/pulg2 Areq = 1.94 pulg2 < 4.27 pulg2 Rel. de esbeltez L/r max pref. = 300 l/r = 64.2 < 300 OK !!! TENSORES Cantidad = 6 TnsA LT = 4.59 m Øn lx =0.5LT 2.30 m TnR 2.5 K = 0.85 TnsB H = Fs = 83.69 ton 3.85 184504.49 lb ßn = 90 TanØn = 32.9977 Senßn = 1.00 Øn = 33 grados CosØn = 0.8386705679 TnR =2HSenßn/NCosØn = 73332.1 lb Viento TnA = 0.75TnR 54999.10 lb Numero de seccion 5 Doble Øn Tipo de Seccion = 4" x 4" x 5/16" Peso de seccion, W = 16.4 lb/pie Area real, A = 4.8 pulg2 Ix = 7.43 pulg4 Sx = 2.58 pulg3 rx = 1.24 pulg ry = 1.80 pulg Max.ßn =90 REVISION POR COMPRESION Kxl/rx = 61.9 Fax = 15140.0 lb/pulg2 fa = 11458.1 lb/pulg2 < 15140.0 lb/pulg2 OK !!! 1.94 < 4.8 Ciment CIMENTACION Cap. de soporte del suelo 3 kg/cm2 (asumido) F'c = 280 kg/cm2 0.7 0.6 0.7 Fy = 2800 kg/cm2 Peso concreto. 2400 kg/m3 Numero de columnas, N = 6 Peso columna = 49596.67 kg M = 13383.38 kg - m 2 0.4 Zapata Ancho = 2 m Largo = 2 m Espesor = 0.4 m Largo pedestal = 0.6 2 Ancho pedestal = 0.4 Area pedestal, Ag = 2400 Numero de zapataz, Nz = 6 Altura de desplante 1.5 m Peso suelo = 1920 kg/cm3 M Altura de desplante 1.35 m P Peso zapata = 3840 kg Peso pedestal 634 kg 0.15 Peso tierra = 6858 kg Peso total, P 11332 kg 1.1 lu 1.5 0.95 11332 > 5719.16 No existe subpresion !! Diseño del pedestal 0.4 P' = 50230.27 kg e =M/P' = 0.27 m e/t = 0.44 < 0.5 Seccion no agrietada !! Columna articulada empotrada K = t2/2r2 r = d/(3)0.3 = 34.64 cm K = 1.50 Esbeltez = lu/d = 1.83 < 10 Columna corta As = 1% del area del pedestal (Refuerzo minimo) As = 24 cm2 Varilla numero = 8 Diametro varilla, Øv = 2.54 cm Area de varilla, Av = 5.07 cm2 Numero de varillas, Nv = 9.45 Usar 6 Area real = 30.40 cm2 Cuantia de acero, p = 0.0127 f'c = 280 n = 8 fs = 1120 fc =Pe(1± Ke/t)/Ag(1+(n-1)p) = 32.03 kg/cm2 6.42 kg/cm2 % de esfuerzos permisibles = 125.00 % fcmax = 25.62 kg/cm2 fa =(0.225f'c+fsp)/(1+(n-1)p = 70.90 kg/cm2 C = fa/.4f'c = 0.633 fe =fa(1+k(e/t))/(1+Ck(e/t)) = 83.09 kg/cm2 > 25.62 OK Diseño de la zapata Area de zapata 40000 cm2 Zx = 1333333.3333333333 cm3 Zy = 1333333.3333333333 cm3 M = 10706.71 kg - m P = 40184.21 P =P/A ± M/Z Pmax = 1.81 kg/cm2 Pmin = 0.20 kg/cm2 0.7 0.6 0.7 Flexion w1 w2 2016 w3 18076 kg/m2 X4 = 5621.02 kg/m2 W1 = 1277 kg/m X4 W2 = 672 kg/m w4 W3 = 8718.54 kg/m W4 = 1967.4 kg/m MA = -3287.51 kg-m/m Numero de varilla = 5 Diametro de varilla Øv = 1.59 cm Recubrimiento = 7.5 cm d = 31.7 cm k = 19.123 defect = 9.61 < 31.7 As = 5.71 cm2 Area varilla, Av = 1.98 cm2 Numero de varillas, Nv = 2.9 Usar 5 Espaciamiento = Area real = 9.90 cm2 Cortante v =.02f'c = 5.6 kg/cm2 V = -8737.10 kg/m v = 3.17 kg/cm2 < 5.6 kg/cm2 # 8 1.1 # 5 @ 45 0.4 # 5 @ 30 # 8 # 6 0.4 0.5 # 3 @ 20 0.6 # 3 @ 15 0.30 ARMADO PEDESTAL V. TENSORA Placa DISEÑO DE ANCLAJE Columna TIPO SECCION PESO UNIDADES WF 12"x 12" 72 lb/pie b = 12 0.95(d+2x2.5) 2.5 12.25 d = 12.25 n m 0.95d m 5 bf n ó m 0.8bf B M 5 t n d M =qn2/2 M =qm2/2 c P = 49596.67 kg 0.75P = 37197.50 kg 82006.36 lbs M = 13383.38 kg-m 0.75M = 10037.54 kg-m 871218.63 lb-pulg M/P = 10.62 pulg > d/2 6.13 pulg Se requieren pernos de tension 0.8bf = 9.60 pulg 0.95(d+2*2.5) = 16.39 pulg C = 22.25 pulg USAR 22 pulg B/C = 0.586 0.56 cm B = 13.03 pulg USAR 14 pulg 0.36 cm d = 19.75 kd = 8.97 f ' = 1500 T F'c = 4000 lb/pulg2 Presion admisible, f ' = 1500 lb/pulg2 SUMA DE MOMENTOS EN LA LINEA DE ACCION DE T SUMA M = 0 dist. = 8.625 pulg a = 3500 1 b = 207375 59.25 c = 1578523.4660591166 451.01 b2 = 3510.56 4ac = 1804.03 Raiz(b2-4ac) = 41.31 kd = 50.28 pulg kd = 8.97 pulg SUMA V = 0 T = 12177.40 lb EL AREA REQUERIDA PARA REFUERZO DE TENSION PARA PERNOS DE ANCLAJE A36 ES: Areq = 0.56 pulg2 USAR 2 pernos de 3/4" EL MOMENTO EN EL PATIN DE LA COLUMNA PARA UNA FRANJA DE 8.97 3.97 5 Y Y = 663.9 lb/pulg2 663.9 M = 15266.12 lb - pulg 1500 EL ESFUERZO DE FLEXION PERMISIBLE PARA PLACA A36 ES : Fb =0.75Fy = 27000 lb/pulg2 M =FbS S=bt2/6 = t = 1.84 pulg 4.68 cm USAR 2 pulg 5 cm USAR PLACA DE 14" x 22" x 2" 2.5 2.5 2.5 2.5 PerfAcer Alas Espesor EJE X - X EJE Y - Y Perfil Peso Area Altura Anchura Espesor del alma I S r I S r lb/pie Pulg Pulg Pulg Pulg Pulg Pulg4 Pulg3 Pulg Pulg4 Pulg3 Pulg 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 14" x 14" 426 125.25 18.69 16.695 3.033 1.875 6610.3 707.4 7.26 2359.5 282.7 4.34 2 14" x 14" 342 100.59 17.56 16.365 2.468 1.545 4911.5 559.4 6.99 1806.9 220.8 4.24 3 14" x 14" 264 77.63 16.5 15.025 1.938 1.205 3526 427.4 6.74 1331.2 166.1 4.14 4 14" x 14" 228 67.06 16.0 15.865 1.688 1.045 2942.4 367.8 6.62 1124.8 141.8 4.1 5 14" x 14" 202 59.39 15.63 15.75 1.503 0.93 2538.8 324.9 6.54 979.7 124.4 4.06 6 14" x 14" 142 41.85 14.75 15.5 1.063 0.68 1672.2 226.7 6.32 660.1 85.2 3.97 7 14" x 14" 136 39.98 14.75 14.74 1.063 0.66 1593 216 6.31 560.7 77 3.77 8 14" x 14" 0 34.99 14.5 14.65 0.938 0.57 1373.1 189.4 6.26 491.8 67.1 3.75 9 14" x 14" 111 32.65 14.37 14.62 0.873 0.54 1266.5 176.3 6.23 454.9 62.2 3.73 10 14" x 14" 95 27.94 14.12 14.545 0.748 0.465 1063.5 150.6 6.17 383.7 52.8 3.71 11 14" x 14" 87 25.56 14.00 14.5 0.688 0.42 966.9 138.1 6.15 349.7 48.2 3.7 12 14" x 14" 84 24.71 14.18 12.023 0.778 0.451 928.4 130.9 6.13 225.5 37.5 3.02 13 14" x 14" 78 22.94 14.06 12.00 0.718 0.428 851.2 121.1 6.09 206.9 34.5 3.00 14 14" x 14" 74 21.76 14.19 10.072 0.783 0.45 796.8 112.3 6.05 133.5 26.5 2.48 15 14" x 14" 68 20 14.06 10.04 0.718 0.418 724.1 103 6.02 121.2 24.1 2.46 16 14" x 14" 61 17.94 13.91 10.00 0.643 0.378 641.5 92.2 5.98 107.3 21.5 2.45 17 14" x 14" 53 15.59 13.94 8.062 0.658 0.37 542.1 77.8 5.9 57.5 14.3 1.92 18 14" x 14" 43 12.65 13.68 8.00 0.528 0.308 429 62.7 5.82 45.1 11.3 1.89 19 14" x 14" 38 11.17 14.12 6.776 0.513 0.313 385.3 54.6 5.87 24.6 7.3 1.49 20 14" x 14" 34 10.00 14.00 6.75 0.453 0.287 339.2 48.5 5.83 21.3 6.3 1.46 21 14" x 14" 30 8.81 13.86 6.733 0.383 0.27 289.6 41.8 5.73 17.5 5.2 1.41 22 12" x 12" 190 55.86 14.38 12.67 1.736 1.06 1892.5 263.2 5.82 589.7 93.1 3.25 23 12" x 12" 120 35.31 13.12 12.32 1.106 0.71 1071.7 163.4 5.51 345.1 56.0 3.13 24 12" x 12" 106 31.19 12.88 12.23 0.986 0.62 930.7 144.5 5.46 300.9 49.2 3.11 25 12" x 12" 92 27.06 12.62 12.155 0.856 0.545 788.9 125 5.4 256.4 42.2 3.08 26 12" x 12" 85 24.98 12.5 12.105 0.796 0.495 723.3 115.7 5.38 235.5 38.9 3.07 27 12" x 12" 72 21.16 12.25 12.04 0.671 0.43 597.4 97.5 5.31 195.3 32.4 3.04 28 12" x 12" 65 19.11 12.12 12.00 0.606 0.39 533.4 88 5.28 174.6 29.1 3.02 29 12" x 12" 58 17.06 12.19 10.014 0.641 0.359 476.1 78.1 5.28 107.4 21.4 2.51 30 12" x 12" 53 15.59 12.06 10.00 0.576 0.345 426.2 70.7 5.23 96.1 19.2 2.48 31 12" x 12" 50 14.71 12.19 8.077 0.641 0.371 394.5 64.7 5.18 56.4 14 1.96 32 12" x 12" 45 13.24 12.06 8.042 0.576 0.336 350.8 58.2 5.15 50 12.4 1.94 33 12" x 12" 40 11.77 11.94 8 0.516 0.294 310.1 51.9 5.13 44.1 11 1.94 34 12" x 12" 36 10.59 12.24 6.565 0.54 0.305 280.8 45.9 5.15 23.7 7.2 1.5 35 12" x 12" 27 7.97 11.95 6.5 0.4 0.24 204.1 34.1 5.06 16.6 5.1 1.44 36 10" x 10" 112 32.92 11.38 10.415 1.248 0.755 718.7 126.3 4.67 235.4 45.2 2.67 37 10" x 10" 100 29.43 11.12 10.345 1.118 0.685 625 112.4 4.61 206.6 39.9 2.65 38 10" x 10" 89 26.19 10.88 10.275 0.998 0.615 542.4 99.7 4.55 180.6 35.2 2.63 39 10" x 10" 77 22.67 10.62 10.195 0.868 0.535 457.2 86.1 4.49 153.4 30.1 2.6 40 10" x 10" 72 21.18 10.5 10.17 0.808 0.51 420.7 80.1 4.46 141.8 27.9 2.59 41 10" x 10" 66 19.41 10.38 10.117 0.748 0.457 382.5 73.7 4.44 129.2 25.5 2.58 42 10" x 10" 54 15.88 10.12 10.028 0.618 0.368 305.6 60.4 4.39 103.9 20.7 2.56 43 10" x 10" 49 14.4 10.00 10.00 0.558 0.34 272.9 54.6 4.35 93 18.6 2.54 44 10" x 10" 45 13.24 10.12 8.022 0.618 0.35 248.6 49.1 4.33 53.2 13.3 2.00 45 10" x 10" 39 11.48 9.94 7.99 0.528 0.318 209.7 42.2 4.27 44.9 11.2 1.98 46 10" x 10" 33 9.71 9.75 7.964 0.433 0.292 170.9 35 4.2 36.5 9.2 1.94 47 10" x 10" 29 8.53 10.22 5.799 0.5 0.289 157.3 30.8 4.29 15.2 5.2 1.34 48 10" x 10" 25 7.35 10.08 5.762 0.43 0.252 133.2 26.4 4.26 12.7 4.4 1.31 49 10" x 10" 21 6.19 9.9 5.75 0.34 0.24 106.3 21.5 4.14 9.7 3.4 1.25 50 8" x 8" 67 19.7 9.0 8.287 0.933 0.575 271.8 60.4 3.71 88.6 21.4 2.12 51 8" x 8" 58 17.06 8.75 8.222 0.808 0.51 227.3 52.0 3.65 74.9 18.2 2.1 52 8" x 8" 48 14.11 8.5 8.117 0.683 0.405 183.7 43.2 3.61 60.9 15 2.08 53 8" x 8" 40 11.76 8.25 8.077 0.558 0.365 146.3 35.5 3.53 49 12.1 2.04 54 8" x 8" 35 10.3 8.12 8.027 0.493 0.315 126.5 31.1 3.5 42.5 10.6 2.03 55 8" x 8" 31 9.12 8.00 8.00 0.433 0.288 109.7 27.4 3.47 37 9.2 2.01 56 8" x 8" 28 8.23 8.06 6.54 0.463 0.285 97.8 24.3 3.45 21.7 6.6 1.62 57 8" x 8" 24 7.06 7.93 6.5 0.398 0.245 82.5 20.8 3.42 18.2 5.6 1.61 58 8" x 8" 20 5.88 8.14 5.268 0.378 0.248 69.2 17 3.43 8.5 3.2 1.2 59 8" x 8" 17 5.00 8.00 5.25 0.308 0.23 56.4 14.1 3.36 6.7 2.6 1.16 Angles Eje X - X Eje Y - Y No. Seccion Peso/pie Area I S r y Radio de Giro 2 L 2 L Angulos adosados, Pulg. lb Pulg2 Pulg4 Pulg3 Pulg Pulg 0 0 3/8 0 3/4 1 2 3 4 5 6 7 8 9 10 11 1 4" x 4" x 3/4" 37 10.9 15.3 5.62 1.19 1.27 1.74 1.88 2.83 2 4" x 4" x 5/8" 31.4 9.22 13.3 4.8 1.2 1.23 1.72 1.86 2 3 4" x 4" x 1/2" 25.6 7.5 11.1 3.95 1.22 1.18 1.7 1.83 1.98 4 4" x 4" x 3/8" 19.6 5.72 8.72 3.05 1.23 1.14 1.68 1.81 1.95 5 4" x 4" x 5/16" 16.4 4.8 7.43 2.58 1.24 1.12 1.67 1.8 1.94 6 4" x 4" x 1/4" 13.2 3.88 6.08 2.09 1.25 1.09 1.66 1.79 1.93 7 3 1/2" x 3/8" 17 4.97 5.73 2.3 1.07 1.01 1.48 1.61 1.75 8 3 1/2" x 5/16" 14.4 4.18 4.9 1.95 1.08 0.99 1.47 1.6 1.74 9 3 1/2" x 1/4" 11.6 3.38 4.02 1.59 1.09 0.968 1.46 1.59 1.73 10 3" x 3" x 1/2" 18.8 5.5 4.43 2.14 0.898 0.932 1.29 1.43 1.59 11 3" x 3" x 3/8" 14.4 4.22 3.52 1.67 0.913 0.888 1.27 1.41 1.56 12 3" x 3" x 5/16" 12.2 3.55 3.02 1.41 0.922 0.865 1.26 1.4 1.55 13 3" x 3" x 1/4" 9.8 2.88 2.49 1.15 0.93 0.842 1.26 1.39 1.53 14 3" x 3" x 3/16" 7.42 2.18 1.92 0.882 0.939 0.82 1.25 1.38 1.52 15 2 1/2" x 3/8" 11.8 3.47 1.97 1.13 0.753 0.762 1.07 1.21 1.36 16 2 1/2" x 5/16" 10 2.93 1.7 0.964 0.751 0.74 1.06 1.2 1.35 17 2 1/2" x 1/4" 8.2 2.38 1.41 0.789 0.769 0.717 1.05 1.19 1.34 18 2 1/2" x 3/16" 6.14 1.8 1.09 0.685 0.778 0.694 1.04 1.18 1.32 19 2" x 2" x 3/8" 9.4 2.72 0.958 0.702 0.594 0.636 0.87 1.01 1.17 20 2" x 2" x 5/16" 7.84 2.3 0.832 0.681 0.601 0.614 0.859 1 1.16 21 2" x 2" x 1/4" 6.38 1.88 0.695 0.494 0.609 0.592 0.849 0.989 1.14 22 2" x 2" x 3/16" 4.88 1.43 0.545 0.381 0.617 0.569 0.84 0.977 1.13 23 2" x 2" x 1/8" 3.3 0.96 0.38 0.261 0.626 0.546 0.831 0.965 1.11 SECCIONES SENCILLAS kg/m cm2 cm4 cm3 cm cm 24 1 3/4" X 5/16" 5.04 6.39 11.24 3.77 1.32 1.4 25 1 3/4" X 1/4" 4.12 5.2 9.57 3.11 1.35 1.35 26 1 3/4" X 3/16" 3.15 4.03 7.49 2.29 1.37 1.3 27 1 3/4" X 1/8" 2.14 2.74 5.41 1.64 1.4 1.22 28 1 1/2" x 3/8" 4.99 6.34 7.91 3.11 1.12 1.3 29 1 1/2" x 5/16" 4.26 5.4 6.66 2.62 1.12 1.24 30 1 1/2" x 1/4" 3.48 4.4 5.83 2.2 1.14 1.19 31 1 1/2" x 3/16" 2.68 3.43 4.58 1.64 1.17 1.12 32 1 1/2" x 1/8" 1.83 2.34 3.25 1.18 1.17 1.07 33 1 1/4" X 1/4" 2.86 3.72 3.21 1.49 0.94 1.02 34 1 1/4" X 3/16" 2.2 2.81 2.54 1.16 0.97 0.97 35 1 1/4" X 1/8" 1.5 1.93 1.83 0.8 0.97 0.89 36 1" X 1/4" 2.22 2.8 1.54 0.92 0.74 0.86 37 1" X 3/16" 1.73 2.21 1.25 0.72 0.76 0.81 38 1" X 1/8" 1.19 1.52 0.92 0.51 0.79 0.76 SecCuad A = bd - b1d1 b1 I = bd3 - b1d13 12 c S = bd3 - b1d13 d1 d 6d I I r = d/4 b 1 2 3 4 5 6 7 8 Dimensiones Propiedades Tamaño Espesor Peso Area I S r nominal de pared pulg pulg lb/pie pulg2 pulg4 pulg3 pulg 1 2 3 4 5 6 7 8 9 1 16" x 16" 0.500 0 1/2 103.3 30.4 1200 150 6.29 2 16" x 16" 0.375 0 3/8 78.52 23.1 931 116 6.35 3 16" x 16" 0.3125 0 5/16 65.87 19.4 789 98.6 6.38 4 5 14" x 14" 0.500 0 1/2 89.68 26.4 791 113 5.48 6 14" x 14" 0.375 0 3/8 68.31 20.1 615 87.9 5.54 7 14" x 14" 0.3125 0 5/16 57.36 16.9 522 74.6 5.57 8 9 12" x 12" 0.500 0 1/2 76.07 22.4 485 80.9 4.66 10 12" x 12" 0.375 0 3/8 58.1 17.1 380 63.4 4.72 11 12" x 12" 0.3125 0 5/16 48.86 14.4 324 54 4.75 12 12" x 12" 0.2500 0 1/4 39.43 11.6 265 44.1 4.78 13 14 10" x 10" 0.625 0 5/8 76.33 22.4 321 64.2 3.78 15 10" x 10" 0.500 0 1/2 62.46 18.4 271 54.2 3.84 16 10" x 10" 0.375 0 3/8 47.9 14.1 214 42.9 3.9 17 10" x 10" 0.3125 0 5/16 40.35 11.9 183 36.7 3.93 18 10" x 10" 0.2500 0 1/4 32.63 9.59 151 30.1 3.96 19 20 8" x 8" 0.625 0 5/8 59.32 17.4 153 38.3 2.96 21 8" x 8" 0.500 0 1/2 48.85 14.4 131 32.9 3.03 22 8" x 8" 0.375 0 3/8 37.69 11.1 106 26.4 3.09 23 8" x 8" 0.3125 0 5/16 31.84 9.36 90.9 22.7 3.12 24 8" x 8" 0.2500 0 1/4 25.82 7.59 75.1 18.8 3.15 25 8" x 8" 0.1875 0 3/16 19.63 5.77 58.2 14.6 3.18 26 27 7" x 7" 0.500 0 1/2 42.05 12.4 84.6 24.2 2.62 28 7" x 7" 0.375 0 3/8 32.58 9.58 68.7 19.6 2.68 29 7" x 7" 0.3125 0 5/16 27.59 8.11 59.5 17 2.71 30 7" x 7" 0.2500 0 1/4 22.42 6.59 49.4 14.1 2.74 31 7" x 7" 0.1875 0 3/16 17.08 5.02 38.5 11 2.77 32 33 6" x 6" 0.500 0 1/2 35.24 10.4 50.5 16.8 2.21 34 6" x 6" 0.375 0 3/8 27.48 8.08 41.6 13.9 2.27 35 6" x 6" 0.3125 0 5/16 23.34 6.86 36.3 12.1 2.3 36 6" x 6" 0.2500 0 1/4 19.02 5.59 30.3 10.1 2.33 37 6" x 6" 0.1875 0 3/16 14.53 4.27 23.8 7.93 2.36 38 39 5" x 5" 0.500 0 1/2 28.43 8.36 27 10.8 1.8 40 5" x 5" 0.375 0 3/8 22.37 6.58 22.8 9.11 1.86 41 5" x 5" 0.3125 0 5/16 19.08 5.61 20.1 8.02 1.89 42 5" x 5" 0.2500 0 1/4 15.62 4.59 16.9 6.78 1.92 43 5" x 5" 0.1875 0 3/16 11.97 3.52 13.4 5.36 1.95 Hoja1 aisc36Ksi kl/r Fa (kg/cm2) Fa(ksi) l/r Fas Fy(ksi) Cc 1 1.52 21.56 121 10.1 33 131.7 2 1.52 21.52 122 10.09 35 127.9 3 1.51 21.48 123 10 36 126.1 4 1.51 21.44 124 9.9 39 121.2 5 1.51 21.39 125 9.8 40 119.6 6 1.5 21.35 126 9.7 42 116.7 7 1.5 21.30 127 9.59 45 112.8 8 1.5 21.25 128 9.49 46 111.6 9 1.49 21.21 129 9.4 50 107 10 1.49 21.16 130 9.3 55 102 11 1.49 21.10 131 9.21 60 97.7 12 1.48 21.05 132 9.12 65 93.8 13 1.48 21.00 133 9.03 90 79.8 14 1.48 20.95 134 8.94 100 75.7 15 1.47 20.89 135 8.86 Para uso en las formulas 16 1.47 20.83 136 8.78 17 1.46 20.78 137 8.7 (kl/r)/Cc Ca 126.1 18 1.46 20.72 138 8.62 0.01 0.599 19 1.46 20.66 139 8.54 20 1.45 20.60 140 8.47 21 1.45 20.54 141 8.39 22 1.44 20.48 142 8.32 23 1.44 20.41 143 8.25 24 1.43 20.35 144 8.18 25 1.43 20.28 145 8.12 26 1.42 20.22 146 8.05 27 1.42 20.15 147 7.99 28 1.41 20.08 148 7.93 29 1.41 20.01 149 7.87 30 1.4 19.94 150 7.81 31 1.4 19.87 151 7.75 32 1.4 19.80 152 7.69 33 1.39 19.73 153 7.64 34 1.38 19.65 154 7.59 35 1.38 19.58 155 7.53 36 1.37 19.50 156 7.48 37 1.37 19.42 157 7.43 38 1.36 19.35 158 7.39 39 1.36 19.27 159 7.34 40 1.35 19.19 160 7.29 41 1.35 19.11 161 7.25 42 1.34 19.03 162 7.2 43 1.34 18.95 163 7.16 44 1.33 18.86 164 7.12 45 1.32 18.78 165 7.08 46 1.32 18.70 166 7.04 47 1.31 18.61 167 7 48 1.31 18.53 168 6.96 49 1.3 18.44 169 6.93 50 1.29 18.35 170 6.89 51 1.29 18.26 171 6.85 52 1.28 18.17 172 6.82 53 1.27 18.08 173 6.79 54 1.27 17.99 174 6.76 55 1.26 17.90 175 6.73 56 1.25 17.81 176 6.7 57 1.25 17.71 177 6.67 58 1.24 17.52 178 6.64 59 1.24 17.53 179 6.61 60 1.23 17.43 180 6.58 61 1.22 17.33 181 6.56 62 1.21 17.24 182 6.53 63 1.21 17.14 183 6.51 64 1.2 17.04 184 6.49 65 1.19 16.94 185 6.46 66 1.19 16.84 186 6.44 67 1.18 16.74 187 6.42 68 1.17 16.64 188 6.4 69 1.16 16.53 189 6.38 70 1.16 16.43 190 6.36 71 1.15 16.33 191 6.35 72 1.14 16.22 192 6.33 73 1.14 16.12 193 6.31 74 1.13 16.01 194 6.3 75 1.12 15.90 195 6.28 76 1.11 15.79 196 6.27 77 1.11 15.69 197 6.26 78 1.1 15.58 198 6.24 79 1.09 15.47 199 6.23 80 1.08 15.36 200 6.22 81 1.07 15.24 82 1.07 15.13 k = 1 83 1.06 15.02 Cc = 126.1 84 1.05 14.90 fy = 36 85 1.04 14.79 kl/r = 1 86 1.03 14.67 Fa = 21.56 87 1.02 14.56 Fa =(1-(kl/r)^2/2Cc^2))fy/(5/3+3(kl/r)/8Cc-(kl/r)^3/8Cc^3) 88 1.02 14.44 Compresion en la seccion bruta de miembros cargados axialmente cuando kl/r es menor que Cc 89 1.01 14.32 90 1 14.20 Fa =12Pi()^2E/23(kl/r)^2 91 0.99 14.09 Compresion en la seccion bruta de miembros cargados axialmente cuando kl/r excede a Cc 92 0.98 13.97 93 0.98 13.84 Fas = Fa(Formula 1 ó 2)/1.6-(l/200r) 94 0.97 13.72 Compresion en la seccion bruta de miembros cargados axialmente cuando kl/r excede a 120 95 0.96 13.60 96 0.95 13.48 97 0.94 13.35 98 0.93 13.23 99 0.92 13.10 100 0.91 12.98 101 0.91 12.85 102 0.9 12.72 103 0.89 12.59 104 0.88 12.47 105 0.87 12.33 106 0.86 12.20 107 0.85 12.07 108 0.84 11.94 109 0.83 11.81 110 0.82 11.57 111 0.81 11.54 112 0.8 11.40 113 0.79 11.25 114 0.78 11.13 115 0.77 10.99 116 0.76 10.85 117 0.75 10.71 118 0.74 10.57 119 0.73 10.43 120 0.72 10.28 Miembros principales y secundarios kl/r no sobre 120 121 0.71 10.14 122 0.7 9.99 123 0.69 9.85 124 0.68 9.70 125 0.67 9.55 126 0.66 9.41 127 0.65 9.26 128 0.64 9.11 129 0.63 8.97 130 0.62 8.84 131 0.61 8.70 132 0.6 8.57 133 0.59 8.44 134 0.59 8.32 135 0.58 8.19 136 0.57 8.07 137 0.56 7.96 138 0.55 7.84 139 0.54 7.73 140 0.54 7.62 141 0.53 7.51 142 0.52 7.41 143 0.51 7.30 144 0.51 7.20 145 0.5 7.10 146 0.49 7.01 147 0.49 6.91 148 0.48 6.82 149 0.47 6.73 150 0.47 6.64 151 0.46 6.55 152 0.46 6.46 153 0.45 6.38 154 0.44 6.30 155 0.44 6.22 156 0.43 6.14 157 0.43 6.06 158 0.42 5.98 159 0.42 5.91 160 0.41 5.83 161 0.41 5.76 162 0.4 5.69 163 0.4 5.62 164 0.39 5.55 165 0.39 5.49 166 0.38 5.42 167 0.38 5.35 168 0.37 5.29 169 0.37 5.23 170 0.36 5.17 171 0.36 5.11 172 0.36 5.05 173 0.35 4.99 174 0.35 4.93 175 0.34 4.88 176 0.34 4.82 177 0.34 4.77 178 0.33 4.71 179 0.33 4.66 180 0.32 4.61 181 0.32 4.56 182 0.32 4.51 183 0.31 4.46 184 0.31 4.41 185 0.31 4.36 186 0.3 4.32 187 0.3 4.27 188 0.29 4.23 189 0.29 4.18 190 0.29 4.14 191 0.29 4.09 192 0.29 4.05 193 0.28 4.01 194 0.28 3.97 195 0.28 3.93 196 0.27 3.89 197 0.27 3.85 198 0.27 3.81 199 0.27 3.77 200 0.26 3.73 Para miembros principales kl/r 121 hasta 200 LRFD Fy = 36 Fy = 50 E = 29000 E = 29000 kl/r λc λc2 Fcr ØFcr λc λc2 Fcr ØFcr 1 0.0112150801 0.000125778 36.00 30.60 0.0132170986 0.0001746917 50.00 42.50 2 0.0224301601 0.0005031121 35.99 30.59 0.0264341972 0.0006987668 49.99 42.49 3 0.0336452402 0.0011320022 35.98 30.59 0.0396512959 0.0015722253 49.97 42.47 4 0.0448603203 0.0020124483 35.97 30.57 0.0528683945 0.0027950671 49.94 42.45 5 0.0560754004 0.0031444505 35.95 30.56 0.0660854931 0.0043672924 49.91 42.42 6 0.0672904804 0.0045280088 35.93 30.54 0.0793025917 0.0062889011 49.87 42.39 7 0.0785055605 0.006163123 35.91 30.52 0.0925196903 0.0085598931 49.82 42.35 8 0.0897206406 0.0080497933 35.88 30.50 0.105736789 0.0111802685 49.77 42.30 9 0.1009357207 0.0101880197 35.85 30.47 0.1189538876 0.0141500274 49.70 42.25 10 0.1121508007 0.0125778021 35.81 30.44 0.1321709862 0.0174691696 49.64 42.19 11 0.1233658808 0.0152191405 35.77 30.41 0.1453880848 0.0211376952 49.56 42.13 12 0.1345809609 0.018112035 35.73 30.37 0.1586051834 0.0251556042 49.48 42.05 13 0.145796041 0.0212564856 35.68 30.33 0.1718222821 0.0295228966 49.39 41.98 14 0.157011121 0.0246524921 35.63 30.29 0.1850393807 0.0342395724 49.29 41.90 15 0.1682262011 0.0283000547 35.58 30.24 0.1982564793 0.0393056316 49.18 41.81 16 0.1794412812 0.0321991734 35.52 30.19 0.2114735779 0.0447210742 49.07 41.71 17 0.1906563613 0.0363498481 35.46 30.14 0.2246906765 0.0504859001 48.95 41.61 18 0.2018714413 0.0407520788 35.39 30.08 0.2379077752 0.0566001095 48.83 41.51 19 0.2130865214 0.0454058656 35.32 30.02 0.2511248738 0.0630637022 48.70 41.39 20 0.2243016015 0.0503112084 35.25 29.96 0.2643419724 0.0698766784 48.56 41.28 21 0.2355166816 0.0554681073 35.17 29.90 0.277559071 0.0770390379 48.41 41.15 22 0.2467317616 0.0608765622 35.09 29.83 0.2907761696 0.0845507808 48.26 41.02 23 0.2579468417 0.0665365731 35.01 29.76 0.3039932683 0.0924119071 48.10 40.89 24 0.2691619218 0.0724481401 34.92 29.69 0.3172103669 0.1006224169 47.94 40.75 25 0.2803770019 0.0786112632 34.83 29.61 0.3304274655 0.10918231 47.77 40.60 26 0.2915920819 0.0850259422 34.74 29.53 0.3436445641 0.1180915865 47.59 40.45 27 0.302807162 0.0916921774 34.64 29.45 0.3568616627 0.1273502463 47.40 40.29 28 0.3140222421 0.0986099685 34.54 29.36 0.3700787614 0.1369582896 47.21 40.13 29 0.3252373222 0.1057793157 34.44 29.27 0.38329586 0.1469157163 47.02 39.97 30 0.3364524022 0.113200219 34.33 29.18 0.3965129586 0.1572225263 46.82 39.79 31 0.3476674823 0.1208726783 34.22 29.09 0.4097300572 0.1678787198 46.61 39.62 32 0.3588825624 0.1287966936 34.11 28.99 0.4229471558 0.1788842966 46.39 39.43 33 0.3700976425 0.1369722649 33.99 28.90 0.4361642545 0.1902392569 46.17 39.25 34 0.3813127225 0.1453993924 33.87 28.79 0.4493813531 0.2019436005 45.95 39.06 35 0.3925278026 0.1540780758 33.75 28.69 0.4625984517 0.2139973275 45.72 38.86 36 0.4037428827 0.1630083153 33.63 28.58 0.4758155503 0.2264004379 45.48 38.66 37 0.4149579627 0.1721901108 33.50 28.47 0.4890326489 0.2391529317 45.24 38.45 38 0.4261730428 0.1816234624 33.36 28.36 0.5022497476 0.2522548089 44.99 38.24 39 0.4373881229 0.1913083701 33.23 28.25 0.5154668462 0.2657060695 44.74 38.03 40 0.448603203 0.2012448337 33.09 28.13 0.5286839448 0.2795067135 44.48 37.81 41 0.459818283 0.2114328534 32.95 28.01 0.5419010434 0.2936567409 44.22 37.58 42 0.4710333631 0.2218724292 32.81 27.89 0.555118142 0.3081561516 43.95 37.36 43 0.4822484432 0.232563561 32.66 27.76 0.5683352407 0.3230049458 43.68 37.13 44 0.4934635233 0.2435062488 32.51 27.63 0.5815523393 0.3382031233 43.40 36.89 45 0.5046786033 0.2547004927 32.36 27.51 0.5947694379 0.3537506843 43.12 36.65 46 0.5158936834 0.2661462926 32.21 27.37 0.6079865365 0.3696476286 42.83 36.41 47 0.5271087635 0.2778436486 32.05 27.24 0.6212036351 0.3858939563 42.54 36.16 48 0.5383238436 0.2897925606 31.89 27.10 0.6344207338 0.4024896674 42.25 35.91 49 0.5495389236 0.3019930286 31.73 26.97 0.6476378324 0.4194347619 41.95 35.66 50 0.5607540037 0.3144450527 31.56 26.83 0.660854931 0.4367292398 41.65 35.40 51 0.5719690838 0.3271486328 31.39 26.68 0.6740720296 0.4543731011 41.34 35.14 52 0.5831841639 0.340103769 31.22 26.54 0.6872891282 0.4723663458 41.03 34.88 53 0.5943992439 0.3533104612 31.05 26.39 0.7005062269 0.4907089739 40.72 34.61 54 0.605614324 0.3667687094 30.88 26.25 0.7137233255 0.5094009853 40.40 34.34 55 0.6168294041 0.3804785137 30.70 26.10 0.7269404241 0.5284423802 40.08 34.07 56 0.6280444842 0.3944398741 30.52 25.94 0.7401575227 0.5478331585 39.75 33.79 57 0.6392595642 0.4086527905 30.34 25.79 0.7533746213 0.5675733201 39.43 33.51 58 0.6504746443 0.4231172629 30.16 25.63 0.76659172 0.5876628651 39.10 33.23 59 0.6616897244 0.4378332914 29.97 25.48 0.7798088186 0.6081017935 38.76 32.95 60 0.6729048045 0.4528008759 29.78 25.32 0.7930259172 0.6288901054 38.43 32.66 61 0.6841198845 0.4680200164 29.60 25.16 0.8062430158 0.6500278006 38.09 32.38 62 0.6953349646 0.483490713 29.40 24.99 0.8194601144 0.6715148792 37.75 32.09 63 0.7065500447 0.4992129656 29.21 24.83 0.8326772131 0.6933513412 37.41 31.79 64 0.7177651248 0.5151867743 29.02 24.66 0.8458943117 0.7155371866 37.06 31.50 65 0.7289802048 0.531412139 28.82 24.50 0.8591114103 0.7380724153 36.71 31.21 66 0.7401952849 0.5478890598 28.62 24.33 0.8723285089 0.7609570275 36.36 30.91 67 0.751410365 0.5646175366 28.42 24.16 0.8855456076 0.7841910231 36.01 30.61 68 0.7626254451 0.5815975694 28.22 23.99 0.8987627062 0.807774402 35.66 30.31 69 0.7738405251 0.5988291583 28.02 23.82 0.9119798048 0.8317071643 35.30 30.01 70 0.7850556052 0.6163123033 27.81 23.64 0.9251969034 0.8559893101 34.94 29.70 71 0.7962706853 0.6340470042 27.61 23.47 0.938414002 0.8806208392 34.59 29.40 72 0.8074857654 0.6520332612 27.40 23.29 0.9516311007 0.9056017517 34.23 29.09 73 0.8187008454 0.6702710743 27.19 23.11 0.9648481993 0.9309320476 33.86 28.79 74 0.8299159255 0.6887604434 26.98 22.94 0.9780652979 0.9566117269 33.50 28.48 75 0.8411310056 0.7075013685 26.77 22.76 0.9912823965 0.9826407896 33.14 28.17 76 0.8523460856 0.7264938497 26.56 22.58 1.0044994951 1.0090192357 32.78 27.86 77 0.8635611657 0.7457378869 26.35 22.40 1.0177165938 1.0357470652 32.41 27.55 78 0.8747762458 0.7652334802 26.13 22.21 1.0309336924 1.0628242781 32.05 27.24 79 0.8859913259 0.7849806295 25.92 22.03 1.044150791 1.0902508743 31.68 26.93 80 0.8972064059 0.8049793349 25.70 21.85 1.0573678896 1.118026854 31.31 26.62 81 0.908421486 0.8252295963 25.49 21.66 1.0705849882 1.146152217 30.95 26.31 82 0.9196365661 0.8457314137 25.27 21.48 1.0838020869 1.1746269635 30.58 25.99 83 0.9308516462 0.8664847872 25.05 21.29 1.0970191855 1.2034510933 30.21 25.68 84 0.9420667262 0.8874897167 24.83 21.11 1.1102362841 1.2326246065 29.85 25.37 85 0.9532818063 0.9087462023 24.61 20.92 1.1234533827 1.2621475031 29.48 25.06 86 0.9644968864 0.9302542439 24.39 20.73 1.1366704813 1.2920197831 29.11 24.75 87 0.9757119665 0.9520138415 24.17 20.54 1.14988758 1.3222414465 28.75 24.44 88 0.9869270465 0.9740249952 23.95 20.35 1.1631046786 1.3528124933 28.38 24.13 89 0.9981421266 0.9962877049 23.72 20.17 1.1763217772 1.3837329235 28.02 23.82 90 1.0093572067 1.0188019707 23.50 19.98 1.1895388758 1.4150027371 27.65 23.51 91 1.0205722868 1.0415677925 23.28 19.79 1.2027559744 1.446621934 27.29 23.20 92 1.0317873668 1.0645851704 23.06 19.60 1.2159730731 1.4785905144 26.93 22.89 93 1.0430024469 1.0878541043 22.83 19.41 1.2291901717 1.5109084781 26.57 22.58 94 1.054217527 1.1113745942 22.61 19.22 1.2424072703 1.5435758253 26.21 22.27 95 1.0654326071 1.1351466402 22.39 19.03 1.2556243689 1.5765925558 25.85 21.97 96 1.0766476871 1.1591702422 22.16 18.84 1.2688414675 1.6099586697 25.49 21.66 97 1.0878627672 1.1834454003 21.94 18.65 1.2820585662 1.6436741671 25.13 21.36 98 1.0990778473 1.2079721144 21.71 18.46 1.2952756648 1.6777390478 24.77 21.06 99 1.1102929274 1.2327503845 21.49 18.27 1.3084927634 1.7121533119 24.42 20.76 100 1.1215080074 1.2577802107 21.27 18.08 1.321709862 1.7469169594 24.07 20.46 101 1.1327230875 1.283061593 21.04 17.89 1.3349269606 1.7820299902 23.72 20.16 102 1.1439381676 1.3085945312 20.82 17.70 1.3481440593 1.8174924045 23.37 19.86 103 1.1551532477 1.3343790256 20.59 17.51 1.3613611579 1.8533042022 23.02 19.57 104 1.1663683277 1.3604150759 20.37 17.32 1.3745782565 1.8894653832 22.67 19.27 105 1.1775834078 1.3867026823 20.15 17.13 1.3877953551 1.9259759477 22.33 18.98 106 1.1887984879 1.4132418448 19.93 16.94 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