Maintenance – Page 3 – What Is Piping

Both H-beam and I-beams are structural steel materials used widely in the construction industry by civil engineering professionals. By a novice, both these members may seem to be similar. The horizontal elements of the I and H beam are known as flanges, while the vertical element is called as the "web". The web resists shear forces, and the flanges are designed to resist most of the bending moment that the beam experiences. In general, The design of both I-beam and H-beam are governed by any of the following criteria: deflection: Target criteria should be to minimize deformationvibration: the stiffness and mass are should be decided based on vibration tendency.bending failure by yieldingbending failure by lateral torsional bucklingbending failure by local bucklinglocal yield due to high magnitude of concentrated loads.shear failurebuckling or yielding of components However, both are quite different from one another. In this article, We will explore the main differences between I-beam and H-beam. What is an H-beam? H-beam is an incredibly strong structural steel member. As the cross-section of this beam resembles the capital letter "H", it is known as H-beam. Fig. 1 shows a typical example of an H-beam. Fig. 1: H-beam Example H-beams have an equal thickness in the two parallel flanges without any taper on the inside surface. Depending on the height and flange width; H-beams are classified into three categories. They are Wide Flange Series H-beamMedium Flange Series H-beam andNarrow Flange Series H-beam. H-beam Size Chart Typical H-beam size and weight chart is provided in the table below: Refer to Fig. 2 H beam size and weight chart: Wide Flange Series (HW) Grade Size of the Section (in mm) Cross-Sectional Area Weight Member Designation H B t1 t2 r cm2 kg/m 100 X 100 100 100 6 8 10 21.9 17.19 100x100x6x8 125 X 125 125 125 6.5 9 10 30.31 23.79 125x125x6.5x9 150 X 150 150 150 7 10 13 40.55 31.83 150x150x7x10 175 X 175 175 175 7.5 11 13 51.43 40.37 175x175x7.5x11 200 X 200 200 200 8 12 16 64.28 50.46 200x200x8x12 200 204 12 12 16 72.28 56.74 200x204x12x12 250 X 250 250 250 9 14 16 92.18 72.36 250x250x9x14 250 255 14 14 16 104.68 82.17 250x255x14x14 H beam size and weight chart: Medium Flange Series (HM) 150 X 100 148 100 6 9 13 27.25 21.39 148x100x6x9 200 X 150 194 150 6 9 16 39.76 31.21 194x150x6x9 250 X 175 244 175 7 11 16 56.24 44.15 244x175x7x11 300 X 200 294 200 8 12 20 73.03 57.33 294x200x8x12 H beam size and weight chart: Narrow Flange Series (HN) 175 X 90 175 90 5 8 10 23.21 18.22 175x90x5x8 200 X 100 198 99 4.5 7 13 23.59 18.52 198x99x4.5x7 200 100 5.5 8 13 27.57 21.64 200x100x5.5x8 250 X 125 248 124 5 8 13 32.89 25.82 248x124x5x8 250 125 6 9 13 37.87 29.73 250x125x6x9 Fig. 2: H-beam Cross Section (Reference for table dimensions) What is an I-beam? I-beams are also structural steel members but their cross sections resemble the capital letter "I". Consisting of two flanges and one web, an I-beam has a slope on the inner surface of the flanges. Depending on the use, I-beam sections are available in a range of weights, flange widths, section, depth, web thickness. Fig. 3 below shows a typical example of I-beams. Fig. 3: I-beam example I-beam Size Chart I-beam size chart for some common structural sections are provided below: Designation Dimensions Depth- H -(mm) Width- B -(mm) Web Thickness- d -(mm) Cross Sectional Area(cm2) Weight(kg/m) UB 127 x 76 x 13 127 76 4 16.5 13 UB 152 x 89 x 16 152.4 88.7 4.5 20.3 16 UB 178 x 102 x 19 177.8 101.2 4.8 24.3 19 UB 203 x 102 x 23 203.2 101.8 5.4 29.4 23.1 UB 203 x 133 x 25 203.2 133.2 5.7 32 25.1 UB 203 x 133 x 30 206.8 133.9 6.4 38.2 30 UB 254 x 102 x 22 254 101.6 5.7 28 22 UB 254 x 102 x 25 257.2 101.9 6 32 25.2 UB 254 x 102 x 28 260.4 102.2 6.3 36.1 28.3 UB 254 x 146 x 31 251.4 146.1 6 39.7 31.1 UB 254 x 146 x 37 256 146.4 6.3 47.2 37 UB 254 x 146 x 43 259.6 147.3 7.2 54.8 43 UB 305 x 102 x 25 305.1 101.6 5.8 31.6 24.8 UB 305 x 102 x 28 308.7 101.8 6 35.9 28.2 UB 305 x 102 x 33 312.7 102.4 6.6 41.8 32.8 UB 305 x 127 x 37 304.4 123.4 7.1 47.2 37 UB 305 x 127 x 42 307.2 124.3 8 53.4 41.9 UB 305 x 127 x 48 311 125.3 9 61.2 48.1 UB 305 x 165 x 40 303.4 165 6 51.3 40.3 UB 305 x 165 x 46 306.6 165.7 6.7 58.8 46.1 UB 305 x 165 x 54 310.4 166.9 7.9 68.8 54 UB 356 x 127 x 33 349 125.4 6 42.1 33.1 UB 356 x 127 x 39 353.4 126 6.6 49.8 39.1 UB 356 x 171 x 45 351.4 171.1 7 57.3 45 UB 356 x 171 x 51 355 171.5 7.4 64.9 51 UB 356 x 171 x 57 358 172.2 8.1 72.6 57 UB 356 x 171 x 67 363.4 173.2 9.1 85.5 67.1 UB 406 x 140 x 39 398 141.8 6.4 49.7 39 UB 406 x 140 x 46 403.2 142.2 6.8 58.6 46 UB 406 x 178 x 54 402.6 177.7 7.7 69 54.1 UB 406 x 178 x 60 406.4 177.9 7.9 76.5 60.1 UB 406 x 178 x 67 409.4 178.8 8.8 85.5 67.1 UB 406 x 178 x 74 412.8 179.5 9.5 94.5 74.2 UB 457 x 152 x 52 449.8 152.4 7.6 66.6 52.3 UB 457 x 152 x 60 454.6 152.9 8.1 76.2 59.8 UB 457 x 152 x 67 458 153.8 9 85.6 67.2 UB 457 x 152 x 74 462 154.4 9.6 94.5 74.2 UB 457 x 152 x 82 465.8 155.3 10.5 104.5 82.1 UB 457 x 191 x 67 453.4 189.9 8.5 85.5 67.1 UB 457 x 191 x 74 457 190.4 9 94.6 74.3 UB 457 x 191 x 82 460 191.3 9.9 104.5 82 UB 457 x 191 x 89 463.4 191.9 10.5 113.8 89.3 UB 457 x 191 x 98 467.2 192.8 11.4 125.3 98.3 Common Beam Standards Common standards that govern the shape and tolerances of structural beam sections are: AISC ManualIS 808ASTM A6,DIN 1025BS 4-1AS/NZS 3679.1EN 10024EN 10034EN 10162 H-beam vs I-beam: Difference between H-beam and I-beam H-beam vs I-beam: Dimensions and Weight An H-beam has a significantly thicker web than an I-beam.An I-beam normally has a slope of 1:6 to 1: 10 in the flange whereas the H-beam has a uniform flange.An H-beam is heavier as compared to an I-beam.The distance of the flanges can be widened as per requirement for an H-beam section but the same is fixed for I-beam.The moment of inertia is different for both beams. In an I-beam, the size of the web is greater than the size of the flange whereas in an H-beam it may not be true. H-beam vs I-beam: Mechanical Properties The cross-section of the I-beam is poor against twisting as compared to H-beam.In general, H-beams are more rigid and can carry more load as compared to I-beams.H-beams are used as columns while I-beams are used as beams. H-beam vs I-beam: Manufacturing An I-beam is manufactured as a single piece throughout, but an H-beam is normally manufactured by welding 3 pieces of metal.An H-beam can be produced to any desired size and height whereas the production of I-beams is limited by the milling machine capacity.