top of page
Search


Choosing Shear Wall Thickness: h/25 vs h/16 — What Should We Follow?
In seismic design, setting the right shear wall thickness is far more important than just passing code checks. It’s about ensuring...
Adisorn O.
Apr 272 min read
🏗️ Caution in Bearing Load Transfer: Why Pilecap Concrete f'c Should Not Be Too Low Compared to Column f'c
📖 Introduction In structural foundation design, particularly for pile caps receiving high axial loads from columns , the transfer of...
Adisorn O.
Apr 263 min read


🏗️ Foundation Bearing Check: Why You Should Never Place a Column at the Edge of a Pile Cap
📖 Introduction In foundation design, particularly for pile caps and spread footings , verifying the bearing stress at the...
Adisorn O.
Apr 263 min read


🚀 Breaking Ground with SEISMIC-PILE: Our Custom FEM Tool for Lateral Pile Analysis
By alpsdev 2025 🔧 Key Features Implemented: ✅ FEM-Based Beam Modeling True 2D beam elements with 2 DOFs per node Supports bending...
Adisorn O.
Apr 241 min read


🏗️ Understanding Pushover Analysis and Capacity Spectrum Method (CSM)
by alpsdev · April 2025 🔎 What is Pushover Analysis? Pushover analysis is a nonlinear static method used to evaluate structural...
Adisorn O.
Apr 242 min read


🧠 From Theory to Practice: General FEM-Based Shear Distribution for Complex Shear Walls
Author: Adisorn Owatsiriwong, D. Eng. 🔍 Problem Statement In modern seismic design, shear walls are critical lateral force–resisting...
Adisorn O.
Apr 222 min read


🔍 Understanding the Response Modification Factor (R) and Overstrength Factor (Ω₀) in Seismic Design
In seismic design, engineers use a blend of structural capacity, ductility, and energy dissipation behavior to ensure life safety and...
Adisorn O.
Apr 222 min read


Key Considerations of Seismic Design: Stiffness, Strength, and Ductility
In the world of structural engineering, seismic design is not just about withstanding earthquakes — it’s about ensuring resilience,...
Adisorn O.
Apr 223 min read


🔄 Rotated Neutral Axis: A Smarter Way to Generate the PMM Surface
When checking seismic design for shear walls, engineers often rely on pre-defined PMM interaction curves. But with today’s tools, we can...
Adisorn O.
Apr 211 min read


🏗️ Understanding P–Delta Effects in ASCE 7-16 Seismic Design
In structural engineering, understanding the role of second-order effects, particularly P-Delta (∆) moments, is crucial for designing...
Adisorn O.
Apr 212 min read


🏗️ Why You Should Always Include the Basement in Seismic Modeling
When it comes to seismic analysis of buildings, one question often gets overlooked: “Should I include the basement in my seismic model?”...
Adisorn O.
Apr 194 min read


WALLCHECK—A Seismic design safety tool for shear wall buildings
In development plan to be completed in Q2/2025
Adisorn O.
Apr 191 min read


Redundancy Factor in ASCE 7: When One Wall Is Not Enough
In seismic design, we focus heavily on member strength and ductile detailing — but often overlook the quiet power of redundancy . ASCE 7...
Adisorn O.
Apr 192 min read


Understanding Structural Irregularities in ASCE 7: A Guide to Remedial Actions
In modern structural design, achieving both safety and efficiency requires more than just calculating forces and designing members—it...
Adisorn O.
Apr 183 min read


Comparison of Post-Installed Anchor Types (ACI 318)
1. Overview This summary compares different types of post-installed concrete anchors, including adhesive, expansion, undercut, and...
Adisorn O.
Apr 172 min read


Concrete Fastener Design Summary (ACI 318-19) -- revised
Adisorn Owatsiriwong, D.Eng. alpsdev Introduction Concrete fasteners (anchors) are used to transfer loads between structural and...
Adisorn O.
Apr 173 min read


Settlement Calculation of Footing on Sand Layers
Credit: uproperty.ph.com *Use this sheet at your own risk!
Adisorn O.
Apr 171 min read


Summary of Load Combinations for DPT1302-61 and DPT1301-50
Thailand's DPT 1301-50 (Standard for wind load calculation) and DPT 1302-61 (Standard for Seismic Design) are currently adopted for...
Adisorn O.
Apr 161 min read
bottom of page



