I Beam Section

S shapes are designated by the letter s followed by the nominal depth in inches and the weight in pounds per foot.

I beam section. Hence i second moment of area is very crucial as the greater its value the lower will be bending stresses developed in the beam. 6 which makes the flanges thin outside and thick inside. Most i beams use structural steel but some are made from aluminum.

I beam is also called steel beam universal beam which is a long strip of steel with a cross section of i shaped. S18 54 7 is an i beam with a depth of 18 inches and having a nominal weight per foot of 54 7 lbf ft. The curved portion where the transition between the web and flange happens is called a fillet.

I beams or i sections as the name states are manufactured in the shape of a capital i. The radius of. An i beam also known as h beam for universal column uc w beam for wide flange universal beam ub rolled steel joist rsj or double t especially in polish bulgarian spanish italianand german is a beamwith an ior h shaped cross section.

Except for the web the i beam also consist of flanges taper or parallel flange on either side of the web and at both ends. However for i section the moment of area remains fairly constant along other axes as opposed to other sections. Therefore the lower the bending stress for same load the better the section would be structurally.

What is h beam h beam is developed from the optimization of i shaped steel. I beam consists horizontal element flanges and vertical element web. In general speaking i beams contains s beam universal beam h beam or wide flange beam.

Thus s12 50 designates an i beam with a depth of 12 inches and a nominal weight of 50 pounds per foot. The inner surface of the upper and lower flanges of the i beam has a slope generally 1. The height between the top and bottom surface of the steel i beam is called beam depth.