Last Updated on June 4, 2024 by Maged kamel

- List of Steel beam posts-part-2
- Solved problem 4-5-How to design a steel beam?
- Step-by-step review of the information on Lp, Lr, and Fcr.
- Solved problem 4-6-how to find the available flexure strength?
- Solved problem 9-7-where Lb is bigger than Lr.
- Step-by-step on how to use a design chart with a given Lbr?
- Solved problem 4-7- design using table 3-10 when Lb>Lr.

**List of Steel beam posts-part-2**

**Solved problem 4-5-How to design a steel beam?**

This is the 12th post of the **steel beams posts-part-2, including** a solved problem 4-5 from Prof. Alan Williams’s book. A simply supported beam of grade 50 steel is laterally braced at 4 ft intervals.

If the beam is subjected to a uniform factored bending moment of 270 ft-kips based on the (LRFD) or 180 ft-kips based on the (ASD), with Cb=1.0, determine (a) the lightest adequate W shape, and (b) the W shape with the minimum allowable depth.

A simply supported beam of grade 50 steel is laterally braced at 4 ft intervals. If the beam is subjected to a uniform factored bending moment of 270 ft-kips (LRFD) or 180 ft-kips (ASD), with Cb=1.0.

Determine (a) the lightest adequate W shape and (b) the W shape with the minimum allowable depth.

This is the link to post 11:Solved problem 4-5-How to design a steel beam?

**Step-by-step review of the information on Lp, Lr, and Fcr.**

This is the 13th post of the **steel beam posts-part-2,** which includes the definition of the following items: Lp, Lr, and Fc.

There is a practice problem: For a given steel W24x176 at Fy=36 ksi, it is required to find the bracing length at the plastic stage Lp and the limiting laterally un-braced length together with the values of Mp and Mr.

This is the link to post 12: Step-by-step review of the Information of Lp, Lr, Fcr.

**Solved problem 4-6-how to find the available flexure strength?**

This is the 14th **post of the steel beam posts- part 2, which includes a solved problem from Prof. Alan Williams’s reference handbook. This** is a case of inelastic buckling.

Solved problem 4.6 A simply supported W16 x40 beam of grade 50 steel is laterally braced at 6 ft intervals and is subjected to a uniform bending moment with Cb =1.0. Determine the available flexural strength of the beam.

This is the link to post 13: Solved problem 4-6-how to find the available flexure strength?

**Solved problem 9-7-where Lb is bigger than Lr.**

This is the 15th post of the steel beam posts-part-2, including a Solved from Prof. Mccormack’s book. Here is the solved problem 9.7.

Using AISC Equation F2-4, determine the values of φb*Mnx and Mnx/ Ω for a w18x 97 with fy=50 ksi and unbraced length lb =38 ft, assuming that cb =1.

This is the link to post14: Solved problem 9-7-where Lb is bigger than Lr.

**Step-by-step on how to use a design chart with a given Lbr?**

This is the 16th ** of the steel beam posts, part 2,** which includes a Solved problem from Prof. Mccormack’s book.

How do you select a beam with lb=18′, Cb=1, Fy=50 ksi, Mult=544.0 FT-kips or Ma=362.0Ft-kips? This is a link to post 15:** Step-by-step on using a design chart with a given Lbr.**

**Solved problem 4-7- design using table 3-10 when Lb>Lr.**

This is the 17th ** of the steel beam posts, part 2, including Solved problems** 4-7 from Prof. Alan Williams’s book.

A simply supported grade 50 steel has an unbraced length of 31 Ft.determine the lightest adequate W shape if the beam is subjected to a uniform factored bending moment of 190.0 ft-kips(LRFD) or 127.0 ft-kips (ASD) with Cb =1.0

This is the link to post 16: Solved problem 4-7– design using table 3-10 when Lb>Lr.

Please refer to the list of steel beam posts 2a to review the CB or the coefficient for steel beam moment.

A very useful external resource is A Beginner’s Guide to Structural Engineering.

The link to part 3 of the list of steel beam posts is part 3.