Question 14 A simply supported beam carries its own weight a…
Question 14 A simply supported beam carries its own weight and a centrically positioned concentrated live load as shown. The beam is 10” wide and 24” deep. The theoretical moment capacity of the beam is 100 k-ft. Dependable (reliable) strengths, probable strengths, and over strengths in shear and moment are obtained by factoring the ideal (theoretical) strengths by the appropriate factors ϕ, ϕp, and ϕo, respectively. These factors are summarized below. Factor Shear Moment Dependable (reliable) strength (ϕ) 0.73 0.85 Probable strength (ϕp) 1.35 1.21 Over-strength (ϕo) 1.55 1.39 For the highest level of protection against shear failure, compute the minimum theoretical shear strength required to ensure that flexural failure precedes shear failure. You may use the load factors recommended by ACI for dead load and live loads (i.e., 1.2 and 1.6, respectively).
Read Details