- List of Steel beam posts-part -1.
- Steel beams and types of buckling.
- Easy approach to Compact and non-compact section.
- Step by step introduction to plastic theory.
- 3a- Elastic and plastic section moduli.
- Solved problem 4-3 for the elastic and plastic section moduli.
- Solved problem 5-1 for Sx & Zx.
- Solved problem 5-2 for Sx&Zx and shape factor.
- Local buckling parameters for steel beams.
- Two solved problems for the analysis of steel beams.
- Solved problem-7-4-1 how to design a steel beam?
- Easy introduction to lateral-torsional buckling.

**List of Steel beam posts-part -1**.

### S**teel beams and types of buckling.**

**You can click on any picture to enlarge then press the small arrow at the right to review all the other images as a slide show.**

This is the first post of the Steel beams Posts which includes:

1-Definition of steel beams

2- Causes of failure for beams.

3-LFB-Local flange buckling, LTB lateral-torsional buckling.

4-Classification of shapes-compact non-compact-slender.

This is the link to the first post: S**teel beams**** and types of buckling.**

**Easy approach to Compact and non-compact section.**

This is the second post of the Steel beams Posts which includes

1-definition of compact section.

2-The value of Mp-Fy*Zx.

3-Table 4-1 width to section ratio for compression elements, members subject to bending.* *

An introduction to the plastic theory, the stress-strain curve for steel, a review of the allowable stress design ASDM, the definition of a plastic hinge, and an analysis of rectangular section*.*

This is a link to post 2: Easy approach to Compact and non-compact section.

### **Step by step introduction to plastic theory.**

This is the third post of the Steel beams Posts which includes an introduction to the plastic theory, the stress-strain curve for steel, a review of the allowable stress design ASDM, the definition of a plastic hinge, and an analysis of rectangular section for any shape?

This is a link to post 3: * *Step by step **introduction to plastic theory**.

**3a- Elastic and plastic section moduli.**

This is the second part of the third post of the Steel beams posts which includes how to estimate the elastic section modulus which is called Sx.

When we have a rectangular section (b*h) under a moment, the stress at the upper fiber has reached to yield.

This is a link to post 3a: Elastic and plastic section moduli.

### **Solved problem 4-3 for the elastic and plastic section moduli.**

**Solved problem 4-3 for the elastic and plastic section moduli.*** *This is the 4rth post of the Steel beams Posts which includes a solved problem 4-3, structural engineering reference manual.

Determine the plastic section modulus and the shape factor for the steel section shown. Assume that the section is compact and adequately braced.

The second method of estimating Ix for the T section. How to estimate the plastic section modulus Zx for the same section and the shape factor.

This is a link to post 4: solved problem 4-3 for the elastic and plastic section moduli.

**Solved problem 5-1 for Sx & Zx. **

This is the 5th post of the Steel beams Posts which includes, A solved problem from Prof. William T. Segui‘s book. **how to find Sx& My and ZX?**

Example 5.1 For the built-up shape shown in Figure 5.6, determine (a) the elastic section modulus S and the yield moment My.

Part (b) the plastic section modulus Z and the plastic moment Mp. Bending is about the x-axis, and the steel is A572 Grade 50.

This is a link to post 5: **Solved problem 5-1 for Sx & Zx. **

** **Solved problem 5-2 for Sx&Zx and shape factor.

This is the 6th post of the Steel beams posts which has A solved problem from Prof. William T Segui‘s book, Example 5.2. Compute the plastic moment, Mp, for a W10 × 60 of A992 steel.

This is a link to post 6: Solved problem 5-2 for Sx&Zx and shape factor.

### Local buckling parameters for steel beams.

This is the 7th post of the Steel beams Posts which includes lambda λp and λr values for compact and non-compact flange and web for The W section, what are the stiffened and the unstiffened elements? How to get the Fcr value? Table 4-1 for lambda values.

This is a link to post 7: Local buckling parameters for steel beams.

### Two solved problems for the analysis of steel beams.

This is the 8th post of the Steel beams Posts which includes a Solved problem from Prof. William T Segui‘s book, Example 5-3. The beam shown in Figure 5.11 is a W16 × 31 of A992 steel.

It supports a reinforced concrete floor slab that provides continuous lateral support of the compression flange. The service dead load is 450 lb/ ft.

This load is superimposed on the beam; it does not include the weight of the beam itself. The service live load is 550 lb/ ft. Does this beam have adequate moment strength?

This is a link to post 8: Analysis of steel beam-Solved problems.

### Solved problem-7-4-1 how to design a steel beam?

* *This is the 9th post* *of the Steel beams Posts *which includes a * Solved problem *From Prof. Charles G salmon’s book.*

Solved problem 7-4-1 Select the lightest W or M section to carry a uniformly distributed dead load of 0.2 kip/ft superimposed (i.e., in addition to the beam weight) and 0.8 kips/ft live load.

The simply supported span (Fig. 7.4.2) is 20 ft. The compression flange of the beam is fully supported against lateral movement. Use Load and Resistance Factor Design, and select for t e o lowing steels: A36; A992; and A572 Grade 65.

This is a link to post 9: Solved problem-7-4-1 how to design a steel beam.

**Easy introduction to lateral-torsional buckling.**

This is the 10th post of the Steel beams Posts. A new subject, which is about the *Lateral- torsional buckling* of beams.

A torsion will occur for a beam accompanied by a lateral movement, which refers to the definition from Schaum’s book, structural steel design. introduction to the coefficient of bending CB.

This is a link to post 10: Easy introduction to lateral-torsional buckling.

For the second post, **Lis**t of steel beam posts-part 2, this is the link.

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