Rolled Steel Beam Sections Are Classified Into

Depending on the cross sectional size the sectional products can be i heavy sections and ii light and medium sections.

Rolled steel beam sections are classified into.

I sections which are also called as steel beams or rolled steel joist are extensively used as beams lintels columns etc. In case of timber structures the simple bending formula m fz may be applied for rectangular beams up to 300 mm depth all rectangular beams solid circular beams only all square cross section beams. These products are mostly delivered in straight lengths rarely in folded bundles but never in coils. Most steel mills have rolling mill divisions that convert the semi finished casting products into finished products.

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 italian and german is a beam with an i or h shaped cross section the horizontal elements of the i are flanges and the vertical element is the web i beams are usually made of structural steel and are. Weight per metre and depth of its section b. Hea heb and hem sections are primarily used for members subjected to bi moments or for heavy beam columns. 1957 was published covering junior light weight medium weight wide flange and heavy weight beam sections.

Roll stands holding pairs of rolls are grouped together into rolling mills that can quickly process metal typically steel into products such as structural steel i beams angle stock channel stock bar stock and rails. The rolled steel beams are designated by the series to which beam sections belong abbreviated reference symbols followed by depth in mm of the section and weight in kn per metre length of the beam e g mb 225 0 312 kn m. Rolled steel beams are designated by indian standard series and its a. Equal angles unequal angles bulb angles all the above.

T sections are produced by cutting i sections into two halves. As per isi rolled steel beam sections are classified into a. Discuss in forum. Beams manufactured from all rolled steel sections and from welded plate the section factor for passive protection system is calculated as.

Ipn section is suitable for beam subjected to bending moment about its major axis. Rolled steel angle sections are classified as. Section factor m 1 1400 t where t the thickness mm of the lower steel web and applies for beams made from all steel rolled sections and from welded steel plate. Hot rolled heavy sectional products in the form of beams are either steel joists or parallel flange beams.

It consists two flanges and a web connected as shown in figure. Under the steel economy programme a rational efficient and economical series of indian standards on beam sections chanr el sections and angle sections was evolved in 1957 and is 808. Depth of section and weight per metre c.