QUESTION 2 a) Structural steel is versatile and flexible enough to be shaped into a variety of profiles. The designs of

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Question 2 A Structural Steel Is Versatile And Flexible Enough To Be Shaped Into A Variety Of Profiles The Designs Of 1 (67.46 KiB) Viewed 28 times

QUESTION 2 a) Structural steel is versatile and flexible enough to be shaped into a variety of profiles. The designs of skyscrapers, bridges, ships, and other large structures call for many different types of steel sections, so it's imperative that professional fabricators have the capabilities to meet the demands that the project calls for. With aid of annotated sketches or diagrams, discuss the following the most common steel sections required in constructing large structures: I. I-Beams or H-beams II. U-Beams III. Hollow Structural Sections (HSS) Major Topic Steel sections used in large civil engineering projects www Blooms Designation AN Score 6 b) Design a timber purlin that will span rafters 2.4 m on centre. The angle of the roof slope is 30° and the purlin will support a vertical dead load of 250 N/m and a wind load of 200 N/m acting normal to the roof. The allowable bending stress (fw) for the timber used is 8 MPa. The timber density is 600 kg/m³. Assume a purlin cross-section size of 50 mm x 125 mm. Find an estimated self-load. W 200m W250N/m