Advantages and Disadvantages of Connections in Steel Structure

ADVANTAGES AND DISADVANTAGES Advantages It has high strength per unit mass. Its quality is assured speed of construction is high. It can be strengthened at any other time, if there is need. It can be fabricated in workshop and transported to site. Material is reusable. Disadvantages It is susceptible to corrosion. Maintenance cost is high. Types of Steel Structural steel – Rolled steel sections are made of such steel. It is also known as Fe-410 or E-250 steel. Fe – 410 – Cu – S means copper bearing steel with ultimate tensile strength of 410 MPa. Weldable quality steel Fe 540 (E 410), Fe - 570 (E 450) and Fe 590 (E 450) steel are also available. Properties of Steel Irrespective of its grade physical properties of steel may be taken as given below: Unit mass r = 7850 kg/m3 E = 2 × 10 5 N/mm2 m = 0.3 G = 0.769 × 10 5 N/mm2 a = 10 × 10 -6 /°C Rolled Steel Sections Rolled steel sections are available in the form of I–sections, channel sections, angle sections, T– sections, bars, tubes, pla...