A rectangular beam reinforced for tension has b = 300mm, d = 480mm. The beam is reinforced with 7 of 25mm bars with fc' = 21MPa and fy = 415MPa. If the beam is cantilever, 3m long and supports a uniform dead load of 15kN/m (including its own weight) applied along its entire length, the maximum value of the concentrated live load that can be applied 2m from the free end is kn. Choices: A. 141kN B. 114KN C. 213kN D. 231kN

Situation #1: A reinforced concrete beam has a width of 300 mm and an overall depth of 550 mm. The beam is reinforced with five 25-mm diameter bottom bars and two 16-mm-diamter bars, both having fy = 345 MPa. Concrete strength fc' = 24 MPa. The centroid of the bars are located 65 mm from extreme concrete fibers. Unit weight of concrete = 23.5 kN/m3. The beam is simply supported over a span of 6 m and carries a superimposed deadload of 8 kN/m. Use NSCP 2010 1.1 What is the depth of compression block? 1.2 What is the stress of the compression steel? 1.3 What is the nominal capacity of the beam? 1.4 What safe uniformly distributed live load can the beam carry over its entire length? 1.5 Using the loads obtained from the previous questions, what is the required nominal shear strength of the beam at critical section near the support? 1.6 Using 10 mm U stirrups with fy = 275 MPa, what is the required stirrup spacing near the support.

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A 300mm x 425 rectangular beam is reinforced for tension only with 4-28mm bars. The beam has a concrete cover of 40mm and a stirrup of 10mm diameter bar. The beam carries a live load and a dead load (without its self-weight). Given that unit weight of concrete is 24kN/ cu.m f'c = 21 MPa and fy = 414 MPa, calculate the additional concentrated live load as shown in the figure.