List of Steel Beam Posts- Part 2a

Last Updated on September 14, 2026 by Maged kamel

List of Steel Beam posts- Part 2a.

1-Introduction to Cb-Bending coefficient part-1 for steel.

This is the first Post in the List of Steel Beam posts-part-2a.

This is Post number 17 for  Steel Beams  Posts, which includes:
 1-How do we estimate the CB-bending coefficient values for different loading types and bracing locations?

 2- How can the Moment gradient CB be estimated for a supported Beam under uniform loading?

3-How can the Moment gradient factor CB for a fixed-end Beam be estimated under uniform loading?

This summarizes the values of Cb, or the bending coefficient, for different steel Beam loadings and bracing locations.

 This is a snapshot of the equation used to find the Cb Value (gradient coefficient) for steel beams based on the factor of 12.50/12.50. After selecting the required bracing locations, we have a simple Beam under a uniform load.

That Beam has two braces at the supports. Divide each strip into four quarters and evaluate the absolute maximum Moment, M max, for an unbraced segment.

Evaluate the maximum absolute Moment Value for the first one-fourth of the unbraced segment, MA.

Find the absolute Value of the maximum Moment at the centerline of the unbraced segment, which is MB.

Find the maximum absolute Moment Value at the midpoint of the unbraced segment, MB.

Find the maximum absolute Moment Value (MC) at three-quarters of the unbraced segment. For the numerator, multiply Mmax by 12.50.

The factor of 12.50 in the denominator represents the sum of 4.50 Max plus 3Ma plus 4*Mb plus 3Mc.

The final Value of Cb for the simple Beam, as shown in the slide image, is 12.5/11 = 1.14.

This is the Link to Post 17.

You can view or download the Post 17 PDF by clicking the button below.

2-Cb-The coefficient of bending part 2 for steel beams.

This is Post number 18 of the Steel Beam Posts. This is the second Post in the List of steel Beam posts- part 2a. And includes:
        1- How to estimate the CB coefficient of bending values for a supported Beam under two concentrated loads.
        2- Old Equation to estimate Cb, Coefficient Of Bending Value.

This links to Post 18.

You can view or download the Post 18 PDF by clicking the button below.

3- Old Cb Coefficient of bending for steel beams.

This is Post 18a of the Steel Beam posts. This is the third Post in the List of steel Beam posts- part 2a. And includes:

1 –   What are the cases where the old CB Value equals 1?

2-   A solved problem for old Cb for a continuous Beam with given moments.

   3- Table  3-1 for the CB-coefficient of bending values for different loading conditions.

     4-The three conditions for beams are as follows: braced steel Beam section, unbraced steel beams, and Noncompact or slender steel Beam sections 

This links to Post 18a.

You can view or download the Post 18a PDF by clicking the button below.

4- The Cb Value- bracing at the midpoint of a beam-uniform load.

This is Post number 18b of the SteeBeamam Posts. This is the fourth Post in the List of steel Beam posts- part 2a. And includes:

1-Cb value-bracing at the midpoint of a beam-uniform load.

2- Cb Value- bracing at the midpoint of a Beam- uniform load- simple Beam case.

3-What is the maximum Value for a Moment?

4- Cb value- bracing at the midpoint of a Beam- uniform load- fixed-end beam case.

This links to Beam Post 18 B.

You can view or download the Post 18 B PDF by clicking the button below.

5- CB Value for bracing at the third point of a Beam under load.

This is Post number 18c of the Steel Beams Posts, which includes:

     How do you find the CB Value for bracing at the third point of a Beam under uniform load in a simple Beam case?

We have four braces for the simple Beam AB at A, C, D, and B—the distance AC-CD=DB=L/4.

The next slide illustrates how to estimate the absolute Moment values for the unbraced segment AA of the supported Beam under uniform load.

 This is the Link to Beam Post 18C. 

You can view or download the Post 18 C PDF by clicking the button below.

You can view or download the Post 18C PDF by clicking the button below.

Here is the Link to Chapter 8, “Bending Members.” A Beginner’s Guide to the Steel Construction Manual, 14^th ed.

Here is the Link to Chapter 8, “Bending Members.” A Beginner’s Guide to the Steel Construction Manual, 15^th ed.

Here is the Link to Chapter 8, “Bending Members.” A Beginner’s Guide to the Steel Construction Manual, 16^th ed.

Here is a Link to the List of Beam Posts 3.

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