Design Of Purlins According to UBC 97 Spreadsheet
A corbel is a short cantilever projecting out from a column, a wall, or the side of a beam. A corbel is designed to support another member, usually a beam or girder, but may also be used to support a slab. ACI 318 restricts the term “corbel” to a member having span-to-depth ratio which is less than or equal to 1.0.
Wide-flange sections are manufactured in groups with a common set of inner rollers. Within each of these groups, the dimensions and properties are varied by increasing the overall depth of the section (thereby increasing the flange thickness) and then letting the web thickness increase as well.
Design for Torsion is moment act along the longitudinal axis of the beams, two types of torsion exist in structures first primary or equilibrium torsion as shown inFig. The torsion resistance is provided primarily by closed stirrups and longitudinal bars located near the surface of the member.
Shear reinforcement is designed to resist shear forces in excess of the shear strength of concrete. They are provided in forms of vertical or inclined stirrups or longitudinal reinforcement bent up at 45 degrees at locations where they are no longer needed to resist bending.