Category: lateral torsional buckling

Practice problem 558Compute Mn.
Practice problem 558 A W18 x 71 is used as a beam with an unbraced length of 9 feet. Use Fy=65 ksi and Cb = 1 and compute the nominal flexural strength.

Practice problem 556Compute Lp and Lr and Ï†b*Mn.
Practice problem 556 A W12 x 30 of A992 steel has an unbraced length of 10 feet. Using Cb = 1.0, a. Compute Lp and Lr. Find Ï†b*Mn and Mn/Î©b for lb=10 feet.

14 A guide to solved problem 97Lb is bigger than Lr.
Solved problem 97is an analysis problem, if we have a beam where Lb is bigger than Lr, how we can estimate the flexure strength? Detailed solution.

13Solved problem 46how to find the available flexure strength?
Solved problem 46 how to get the available flexure strength for a beam? this is an analysis problem, bracings distances are >Lp but less than Lr.

12 Easy introduction to plastic bracing length Lp, Lr, Fcr.
Review of the information of Lp, Lr, Fcr, what are the relating equation for each item? a practice example is given for illustration of the subject.

11Solved problem 45How to design a steel beam?
Solved problem 45How to design a steel beam under lateraltorsional buckling? a detailed step by step calculation for LRFD and ASD design parameters.