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Outlook of Applications in Multi-Objective Optimization Design
*Auto Generated by GPT-5 1. Steel and Concrete Frame Design Objectives: Minimize material cost (steel weight, concrete volume). Minimize...
Adisorn O.
Sep 272 min read
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Multi-Objective Optimization using PSO (MOPSO)--Spread Footing Design Example
Problem setup We want to design a square footing on soil that satisfies safety and economy. Design variables : B = footing width (m) D =...
Adisorn O.
Sep 273 min read
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What is Lévy Flight?
Lévy Flight or Lévy Step is commonly used in modern swarm-based algorithms, especially by Prof. Xin-She Yang's algorithms. The Lévy step...
Adisorn O.
Sep 242 min read
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Understanding Secondary Effects in Post-Tensioning : A Physical Explanation
We mostly recall that M = M_primary + M2, but here is a simpler explanation that can be made, so we don't just memorize the math. 1....
Adisorn O.
Sep 232 min read
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Optimization of RC Beam under Flexure using Harmony Search (ACI 318-19)
In this blog, we present an example of RC beam section optimization. The optimization problem is formulated as following: Design Vars: b,...
Adisorn O.
Sep 224 min read
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Harmony Search Algorithm : A music-inspired optimizer
When a musician composes or improvises the music he might choose from 3 strategies: Reuse the line of notes from his memory...
Adisorn O.
Sep 223 min read
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🔥 Firefly Algorithm (FA) – Overview
Inspired by: Â Bioluminescent communication of fireflies. Inventor: Â Xin-She Yang (2008). Core Idea: Each firefly is attracted to brighter...
Adisorn O.
Aug 32 min read
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JAYA Algorithm (RV Rao, 2016): Overview
The Jaya algorithm , proposed by Prof. R. Venkata Rao (2016), is a simple, yet effective population-based optimization algorithm . The...
Adisorn O.
Aug 12 min read
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T-Beam Ductility Check (Non-Iterative Method)
alpsdev 1. Objective To verify ductility compliance of a prestressed T-beam section per ACI 318-19 Section 21.2.2, by checking if the...
Adisorn O.
Jun 133 min read
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3D Frame Transformation with Section Roll Example (Simplified)
This document explains the step-by-step procedure to compute the transformation matrix for a 3D frame element that includes a section...
Adisorn O.
Jun 72 min read
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STM Example: Reinforced Concrete Corbel
Here we show the real example of reinforced concrete corbel to carry a total load of 900 kN, i.e. 4 points of 225 kN. The STM model is...
Adisorn O.
Jun 22 min read
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Strut and Tie Modeling in Reinforced Concrete Structures--Basic and Applications
reference: (PDF) Strut-and-Tie-Modeling in Reinforced Concrete Structures Basics and Applications
Adisorn O.
Jun 21 min read
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Understanding Plastic Collapse: Lower Bound vs. Upper Bound Theorems
1. Introduction Plastic analysis provides a powerful tool for estimating the collapse load of structures by using either the lower bound...
Adisorn O.
Jun 12 min read
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Flexural Design of Beam with Compression Rebar : ACI 318-19
% Beam parameters fc = 30; % MPa fy = 500; % MPa Es = 200000; % MPa b = 300; % mm d = 550; % mm dp = 50; % mm Mu = 400e6; % N.mm phi =...
Adisorn O.
May 242 min read
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Why and When to Use Two-Stage Seismic Analysis in Tall Building Design
In modern seismic design, especially for tall buildings with podiums, engineers often face a fundamental modeling dilemma: Should we...
Adisorn O.
May 173 min read
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What Universities Don't Teach: The Art of Structural Engineering Judgment
In the world of structural engineering, everyone learns the code. Everyone models the structure. Everyone checks PMM ratios, rebar...
Adisorn O.
May 172 min read
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Design of Gravity Frame (Non-Participating Frame) : Summarized from Prof. Moehle's Book
Background Based on the excerpts from "Seismic Design of Reinforced Concrete Buildings" by Jack Moehle, we can certainly discuss gravity...
Adisorn O.
May 156 min read
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What is Behind ETABS's Simplified C- T- Shear wall Design
Ref. ETABS's SWD ACI318-99 Manual Based on the Shear Wall Design Manual (ACI 318-19) , the Simplified C- and T-section shear wall design...
Adisorn O.
May 143 min read
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