blog posts

Introduction to structural steel Compression Members Steel beams Bolted connection Tension Members Mechanics of materials Elementary linear algebra Engineering Economy First moment of area for plain shapes First moment of area for round shapes Second moment of area for plain shapes Maximum moment of Inertia Numerical-Solution of linear systems Numerical-Solution of non-linear systems Discrete math Numerical-Introduction to interpolation Videos for second moment of area Videos for maximum moment of inertia Videos for discontinuity functions

21-Solved problem 4-16 for k value using the French equation.

March 11, 2026January 15, 2021 by Maged kamel

Solved problem 4-16 for k of unbraced frame by french equation.

Solved Problem 4-16 For K Factor,by-using-french-equation for the unbraced frame with different end conditions, and how to estimate the k values?

5- First solved problem-LU decomposition for the 3×3 matrix

July 30, 2026January 15, 2021 by Maged kamel

First solved problem-LU decomposition for the 3x3 matrix.

This post illustrates the first solved problem-LU decomposition for the 3×3 matrix. Step by step guide to solve 3 simultaneous equations by the LU method?

1C- Best and Full illustration of AISC Table 2-4.

February 14, 2026January 10, 2021 by Maged kamel

Introduction to AISC Table 2-4 using CM#14-CM#15.

AISC Table 2-4 for various steel- shapes The main difference in Table 2-4 between CM#14 and CM#15.

4- Easy Introduction to Matrix operations-part-2.

January 27, 2026January 8, 2021 by Maged kamel

Post-4-matrix-Matrix operations part 2-Powers of a matrix.

A discussion of matrix operations-part-2 The operations are powers of matrix & multiplication of 3×3 matrices. Review of the properties of matrix addition.

1B-Review of AISC table 2-5 for plates.

February 14, 2026January 8, 2021 by Maged kamel

Brief data for post-1B- tension post

A review of AISC table 2-5 for plates including the differences between CM#14 and CM #15 and a review of table 1-7a for Workable gauges for angles.

20-Solved problem 4-16 for k factor for a portal frame.

March 5, 2026January 8, 2021 by Maged kamel

Solved problem 4-16 for the k value for an unbraced frame.

Solved Problem 4-16-part -1 For K Factor, for un-braced frame with different end conditions, and how to estimate the k values for two columns?

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

July 30, 2026January 1, 2021 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?

1-What is the First moment of area?

March 8, 2026December 31, 2020 by Maged kamel

Brief illustration for Post 1-first moment of area

The lecture includes definitions for the area, Cg of an area, and the first moment of area, Moment of inertia, and product of inertia.