Blog posts

4-Derive the expression for L-U values for-3×3 matrix.

September 17, 2025December 1, 2020 by Maged kamel

Brief illustration of Post 4- numerical linear.

Step-by-step guide on how to derive the expression for L-U values for-3×3 matrix using Doolittle’s method?

18-A Review of portal frames-pin supports at base.

July 18, 2025December 1, 2020 by Maged kamel

Brief illustration for post 18-compression.

A review of portal frames subject, how to derive the internal forces for the portal frame with hinged supports at the base?

11-Moment of inertia Iy-Case-2 for a right-angle triangle.

June 20, 2025December 1, 2020 by Maged kamel

How to get the moment of inertia for a right-angle triangle -Iy-case-2?The procedure is done by using a vertical strip for integration. how to find polar moment of inertia Jo?

24- Easy approach to deflection of steel beams.

May 9, 2025November 30, 2020 by Maged kamel

Brief content of Post 24 for deflection of steel beams.

Deflection of steel beams, what are the disadvantages. What are the parameters controlling the deflection of steel beams?

10-Ix-the moment of inertia for right-angle-Case-2.

June 15, 2025November 20, 2020 by Maged kamel

Brief data for post-10-inertia-Ix value for right-angle case-2.

How to get Ix-the moment of inertia for the right-angle triangle-Case-2? by using a horizontal strip, and the other method is to use a vertical strip.

3-How to solve for x-y by L-U Decomposition?

September 17, 2025November 20, 2020 by Maged kamel

How to solve for x-y by L-U Decomposition? Illustration by Gauss elimination for L and U matrices.

17-Alignment chart-part 2 for the unbraced frames.

July 18, 2025November 20, 2020 by Maged kamel

Brief illustration for post 17-compression-Review of Alignment chart.

Alignment chart-part 2, discussion about the conditions from which the alignment chart was developed and an introduction to the portal frame.

9- Easy approach to Ixy for-right-angle -Case-1.

June 14, 2025November 15, 2020 by Maged kamel

Brief data for post-9-inertia. how to derive Ixy for a right-angle case-1?

How to estimate the product of inertia Ixy for a right-angle triangle case No.1 at the external axis? step-by-step illustration by using integration. Ixy at the Cg is derived.

23S- Solved problem 10-2, Table 3-2 for shear value.

October 12, 2024November 15, 2020 by Maged kamel

A solved problem 10-2 indicates how to check the adequacy of shear using table 3-2. the second part is the relation between h/tw and Vn-CM#15.

16a- Solved Problem 5-10 with more iterations-Fcr value.

July 24, 2025November 14, 2020 by Maged kamel

brief illustration for post 16a- compression posts.

A Solved Problem 5-10 with more iterations For the Available Strength Of A Column w16x26 which is a slender column.

2- Easy illustration for LU decomposition for 2×2 matrix.

September 17, 2025November 14, 2020 by Maged kamel

How to use the Lu decomposition method for a 2×2 matrix? A step-by-step guide to find L and U values?

3-Bearing Type connections-part-2.

September 19, 2025November 14, 2020 by Maged kamel

Brief illustration post 3-bearing types connections-part 2

This is bearing Type connections-part-2. The topics include the nominal tensile strength of a bolt. Edge spacing and bolts spacing.

22S-Step-by-step guide to the solved problem 10-2 for beam.

October 12, 2024November 7, 2020 by Maged kamel

A solved problem 10-2 indicates how to check the adequacy of shear for a given W section beam? The relation between h/tw and vn for CM#14.

21S- Solved problem 2-22 for shear stress estimation-part 2

September 8, 2024November 5, 2020 by Maged kamel

A solved problem 2-22 that includes three different shapes and the shear stresses-for each shape to be evaluated and drawn, Aisc provision for shear is also included.

20S- A guide to solved problem 2-22 for shear stress-part-A

June 7, 2024November 3, 2020 by Maged kamel

A solved problem 2-22 for shear stress, it is required to estimate in part-a, the shear stress for a rectangle with given force and dimension in inches.