A simply supported beam is made up of A36 steel with Fy=245 MPa and is laterally unsupported all throughout. Determine the allowable bending stress for a span of 5m. Consider that the beam is a rolled wide-flange section. Use the properties of the designated wide-flange section below. a. Determine the design flexural strength (in MPa). b. Determine the ultimate live load (in kN/m) that the beam could carry.

2/3 700 mm 1) A typical cross-section of a properly reinforced con-crete beam is shown in the figure below. The material properties are summarized below. Use an effective depth of 600 mm. 500 mm Given: fy = 400 MPa = 0.65 75% = 0.85 E = 200 000 MPa Y See the Table 1 f' 48MPa - Bar : 3-30M a) Is the beam properly reinforced/over-reinforced/ balanced Determine the factored moment resistance? b) Consider the beam section "a) "above. However, due to embedded items, the reinforcing is raised by 65 mm, such that the effective depth is reduced to 585 mm (Draw the new cross-section view). Find the factored moment resistance considering the new reinforcement layout. c) Comment on the effect of the change in reinforcement location on the moment resistance d) Refer to the beam section from Part "b" above. The same contractor reported that, due to some problems related to batching, the actual 28-day concrete strength is reduced by 10%. What is the new F'c? Find the factored moment resistance for…

A reinforced concrete beam has a width of 300 mm and an effective depth of 618 mm. Compressive reinforcement (if required) will be placed at d' = 60 mm. fc' = 28 MPa and fy = 415 MPa. Use 2010 NSCP. The beam is to support a factored bending moment of 600 kN.m. use phi = 0.90 for flexure. Questions 1.1) Calculate the steel ratio for balanced section, (rho bal) 1.2)Determine the theoretical steel ratio required (rho) for the beam to support the given factored moment. * 1.3)Following NSCP requirements, determine the required area for steel reinforcement, As * 1.4)Determine the number of 28 mm diameter bars required as tension reinforcement. *

Segment A of the composite beam is made from 2014-T6 aluminum alloy and segment B is A-36 steel. If w = 0.9 kip/ft, determine the absolute maximum bending stress developed in the aluminum and steel. Answer in ksi. Aluminum = 3 x 3 Steel 3 x 3 = w = spread over 15 ft