Sect. B4.] [CAP. B]
16.1-17 65-16.1
MEMBER PROPERTIES REQUISITOS DE DISEÑO
Unstiffened ElementosElements No-Atiesados
Casos Case
TABLA B4.1b TABLE B4.1a Razones Ancho-Espesor: Elementos en Compresión. Width-to-Thickness Ratios: Compression Elements Miembros sometidos a Flexión Members Subject to Axial Compression Razón AnchoLimiting Razón Espesor Límite Width-to-Thickness Width-toAncho λ Ratio Thickness r (compacta / no compacta Espesor (nonslender/slender) Ratio (esbelto / no esbelto)
Descripción del Elementoof Description
Element
1 Flanges of rolled Alas de perfiles I-shaped sections, laminados, planchas plates projecting conectadas a from rolled I-shaped perfiles laminados, sections, outstanding alas de pares de legs of pairs of angles ángulos conectados connected with concontinuamente, alas tinuous contact, de canales y alas de flanges of channels, secciones T. and flanges of tees
b/t
0.56
[a]
I-shaped soldados sections y planchas and plates conecor angle o ángulos legs from tadosprojecting a secciones built-up I-shaped soldadas. sections
b/t
0.64
kc E Fy
of single 3 Legs Alas de perfiles án-
angles, legs of alas gulo laminados; double angles with de pares de ángulos separators, and all con separadores y other unstiffened todo tipo de elemenelements tos no atiesados.
b/t
0.45
E Fy
d/t
0.75
E Fy
h/tw
1.49
E Fy
b/t
1.40
E Fy
b/t
1.40
E Fy
b/t
1.49
E Fy
D/t
E 0.11 Fy
of doubly 5 Webs Almas de secciones I symmetric rolled and con doble simetría y built-up I-shaped secsecciones canal. tions and channels
Paredes of de seccio6 Walls
Stiffened Elements Elementos Atiesados
Examples
E Fy
of built-up 2 Flanges Alas de perfiles I
of tees 4 Stems Alma de Secciones T.
nes HSS rectangurectangular HSS lares y cajones de espesor uniforme
7 Flange Alas decover sobreplates
and diaphragm planchas y planchas plates between diafragma entre lines of fasteners or welds líneas de conectores o soldadura
8 All other stiffened Todo elemento elements atiesador.
9 Round HSS Tubos circulares.
[a]
Ejemplo
kc = 4 h / t w , but shall que not 0,35, be taken lessque than 0.35 greaterde than 0.76 for calculation purposes. no menor ni mayor 0,76 paranor propósitos cálculo. Especificación paraStructural Construcciones de Acero,July Julio7,7,2016 2016 Specification for Steel Buildings, American Institute OF of S AMERICAN INSTITUTE Steel TEELConstruction CONSTRUCTION