As a result, HSS have been employed in a variety of structural applications under largely static loads, including as chords and braces in truss systems, as supports in cladding systems, and as columns in building frames. Hollow structural sections (HSS) have many favorable properties such as good compression, bending, and torsional resistance a high strength-to-weight ratio and smooth lines that work well for architecturally exposed steel. Considerations for Use of HSS in Seismic Frame SystemsĬonsiderations for Use of HSS in Seismic Frame SystemsĪssociate Professor, Civil & Environmental Engineering, University of Michigan, Ann Arbor, MI, USA.Welded wire fabrics are nothing but a series of mild steel bars which are arranged perpendicular to each other and welded at all intersection. are added in manufacturing process of TMT bars which improves its corrosion resistance. By this combination of different temperature, the bar gains more yield strength and exhibits good elongation at ultimate failure.Ĭopper, phosphorous and chromium etc. The core helps the outer surface to be tempered. So, surface of bar gets cooled down and inner side or core of the bar still in hot condition. Thermo-mechanically treated bars or TMT bars are manufactured by a special technique in which the red-hot steel bars are suddenly quenched by spraying water on it. Rolled Thermo-Mechanically Treated (TMT) Bars These are look-alike HYSD ribbed bars but these bars are not recommended by any code and they also have very less strength compared to HYSD bars. Ribbed bars can also be produced from mild steel.
HYSD bars can be welded using electronic flash butt welding or arc welding.Excellent bonding properties with concrete.Suitable for any type of concrete work.30 to 40% of cost reduced when compared to other round bars.HYSD bars can be bend up to 180o without any cracks.The reason why these are more famous than any other bars is because of following advantages: They are available in many sizes varying from 6 mm to 50 mm diameter. HYSD bars are important innovation of steel and they are extensively used as main reinforcement materials in all concrete works like bridges, buildings, precast concrete works, foundations, roads etc. The twist is made according the standard requirements. Ribs are nothing but projections produced on bars by cold twisting of bar in hot rolled condition.
Ribbed HYSD bars are made of high yield strength steel.
0 kommentar(er)
