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Sunday, March 27, 2011

Designation and terminology of Beams

• In India
I-beams are designated as ISMB, ISJB, ISLB, ISWB. ISMB :Indian Standard Medium Weight Beam, ISJB : Indian Standard Junior Beams, ISLB : Indian Standard Light Weight Beams, ISWB : Indian Standard Wide Flange Beams. Beams are designated as per respective abbreviated reference followed by the depth of section such as for example ISMB 450, where 450 is the depth of section in millimetres (mm). The dimensions of these beams are classified as per IS:808. (as per BIS)
• In the United States
I-beams are commonly specified using the depth and weight of the beam. For example, a "W10x22" beam is approximately 10 inches (25 cm) in depth (height when the I-beam is standing on its flanges) and weighs approximately 22 lb/ft (33 kg/m).
• In Canada
I-beams are now commonly specified using the depth and weight of the beam in metric terms. For example, a "W250x33" beam is approximately 250 millimetres (10 in) in depth (height when the I-beam is standing on its flanges) and weighs approximately 33 kg/m (22 lb/ft).
• In the United Kingdom
these steel sections are commonly specified with a code consisting of the major dimension (usually the depth)-x-the minor dimension-x-the mass per metre-ending with the section type, all measurements being metric. Therefore a 152x152x23UC would be a column section (UC = universal column) of approximately 152 millimetres (6 in) depth 152 millimetres (6 in) width and weighing 23 kg per meter length.
• In Australia
these steel sections are commonly referred to as Universal Beams (UB) or Columns (UC). The designation for each is given as the height of the beam, the type (beam or column) and then the unit metre rate (e.g., a 460UB67 is a 460 millimetres (18 in) deep universal beam that weighs 67 kg/m)

Sunday, March 6, 2011

ISA- Equal Angle

This post let us see the angle section. There are two types of angles are available.
One is Equal Angle, another one is un equal angle.
 For more details of angle section please refer the post http://strleng.blogspot.com/2010/03/steel-sections.html
Ready reference of unit weight of angle is below. It will be very usefull to all structural and construction engineers

Click the table to enlarge

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