One column of a building is a 450mm × 450mm square column reinforced with 8 – 28 mm diameter bars (fy = 415 MPa) that are arranged symmetrically around the column perimeter. Ties are to be 12mm diameters with clear concrete cover of 40mm. 1. If concrete is to be 20.7 MPa, find the nominal axial load that the column section could carry. Assume K = 1.5 Lu = 1.9 m. Assume our column not braced against sidesway.  a. 4222.2 kN b. 4416.5 kN c. 4123.9 kN d. 4070.6 kN

Q: Calculate the live load capacity of the reinforced concrete beam if fc' = 20.7 MPa and fy = 276 MPa.…

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Q: A simply supported wood beam of length L = 8 ft carries a concentrated load P at midspan, as shown.…

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Q: The beam shown below with a length L = 16 m and a rectangular cross section that has a width of b =…

A: Find reactions:∑ MR=0R1L-PL-x=0R1=13P16

System of Forces

A force is an external influence or agent that changes the state of a system. According to Newton's second law, the force applied to a body is proportional to the change in momentum of a body. Hence, whenever a force is applied to a body, its momentum changes. If the body is at rest, under the action of force, its state of rest changes to motion. In other words, the magnitude of the momentum of the body changes from zero to a measurable value. Similarly, if the body possesses some initial velocity, it has some associated momentum, the effect of force can cause the body to halt or come to rest, that is, the momentum reduces to zero.