Problem 2.7 A reinforced concrete beam has the following data. Beam width, b= 300 mm Effective depth, d=600 mm Compression steel cover, d' = 60 mm Concrete strength, fc=27.5 MPa Steel Strength, fy = 415 MPa a) Find the flexural strength of a singly-reinforced section if the extreme tension steel reached a strain of 0.005. b) Find the number of pieces of 28 mm diameter flexural steel for a singly-reinforced section if the extreme tension steel reached a strain of 0.005. c) Find the mumber of 28 mm diameter tension reinforcements if the section is to resist a factored design load of 660 kN-m d) If 2-28 mm diameter bars are added as compression steel, determine the maximum number of pieces required for the tension reinforcements. Assume the compression steel yielded and ignore displaced concrete.

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Steel Framing

A steel frame consists of a skeleton frame structure comprising of horizontal I-beams and vertical steel columns fitted in a rectangular grid building construction to brace the floors, walls, and the roof of the building held onto the frame. Due to the implementation of this methodology, the construction of the skyscrapers was feasible.