PSAD Refresher 106: Locations in Concrete Beam where Stirrups are Not Required скачать в хорошем качестве

PSAD Refresher 106: Locations in Concrete Beam where Stirrups are Not Required

Enrol to our Review Center: https://www.facebook.com/share/1AC24W... SITUATION: A 9-m long concrete beam has simple supports with 3-m overhang at the right end (i.e. distance between supports is 6 m). The concrete cross section is b = 350 mm by h = 500 mm, reinforced with 3-25 mm diameter bars at the bottom and 2-25 mm diameter bars at the top, and confined by 10-mm diameter stirrups. The beam carries a uniform service dead load of 25 kN/m (including self-weight) and uniform service live load of 20 kN/m over the entire beam. Use fc’ = 21 MPa, fy = 420 MPa and fyv = 270 MPa. Required strength U = 1.2D + 1.6L. 1. Calculate the maximum positive moment on the beam, in kN-m. A. 157 C. 179 B. 148 D. 192 2. Calculate the total length (m) of the beam that does not require stirrups. A. 1.89 C. 0.72 B. 2.16 D. 1.44 3. Calculate the required spacing (mm) of stirrups at the most critical section (with largest Vu) for shear on the beam. A. 100 C. 140 B. 120 D. 160 Thanks for watching! Comment for questions and suggestions for future lecture in this series. Subscribe and hit the bell button to be notified for future posts. #civilengineering #boardexam #engineering #structuralanalysis #structuralengineering #CivilEngineeringLicensureExamination #PRC #PSAD #theoryofstructures #cele #strengthofmaterials #mechanicsofmaterials #staticsofrigidbodies #steeldesign #compressionmember #trusses #friction #refresher #PSADRefresher #SHET