PSAD Refresher Series

Currently Playing: PSAD Refresher 101: Built-up Box Steel Column using Two Channels

Enrol to our Review Center: https://www.facebook.com/share/1AC24Wsb9v/?mibextid=wwXIfr SITUATION: Two channels are welded at the tip of the flanges to form a box column. Properties of each channel: A = 5350 mm² tw = 10 mm d = 250 mm Ix = 52 x 106 mm4 bf = 100 mm Iy = 5 x 106 mm4 tf = 15 mm Fy = 248 MPa Distance from centroidal y-axis of the channel to the outer face of the web, x = 29 mm. Column height = 4 m, fixed at the top and bottom for both axes. The major x-axis of the channel is the x-axis of the built-up column. 1. Determine the maximum bending stress in the column due to a moment of 170 kN-m about the y-axis. A. 204.3 MPa C. 188.1 MPa B. 324.5 MPa D. 265.8 MPa 2. What is the critical slenderness ratio of the built-up column? A. 40.57 C. 63.12 B. 77.30 D. 25.87 3. Determine the available strength of the member, in kN assuming that the column is purely axially loaded. Refer to SD-1. A. 1393 C. 1491 B. 1078 D. 1154 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