Smart Civil & Structural
Calculations Made Simple
คำนวณงานโครงสร้างตามมาตรฐาน AISC และ ว.ส.ท. — every result comes with the governing equations, step-by-step substitution and the code clause it is based on. Plus steel section, rebar, weld and material data in one place.
1
Calculator live
90
Steel sections
15
Rebar sizes
16
Standards indexed
Engineering Calculations, Instantly
Enter your values and get a result you can defend — formulas, substitution and code references included.
Beam Weld Connection
รอยต่อเชื่อมคานเหล็ก
Double fillet weld on the beam web under eccentric shear — resultant force per unit length, required weld size, code min/max limits and six geometry checks.
Coming next
Library →- Bolted Shear Connectionรอยต่อสลักเกลียวรับแรงเฉือนAISC 360
- Column Base Plateแผ่นฐานเสาเหล็กAISC DG1
- Steel Beam Designออกแบบคานเหล็กAISC 360 / ว.ส.ท.
- RC Beam Designออกแบบคานคอนกรีตเสริมเหล็กACI 318 / ว.ส.ท.
- Isolated Footingฐานรากเดี่ยวACI 318 / ว.ส.ท.
Reference Data at Your Fingertips
H-beam section properties, reinforcing bars, weld data and material grades — no more flipping through catalogues.
Steel H-Beam Sections
Properties from nominal dimensions
| Section | A (cm²) | kg/m | Ix (cm⁴) | Zx (cm³) |
|---|---|---|---|---|
| H 150×150×7×10 | 39.10 | 30.7 | 1,601 | 239.6 |
| H 200×200×8×12 | 62.08 | 48.7 | 4,610 | 513.2 |
| H 300×150×6.5×9 | 45.33 | 35.6 | 6,933 | 522.1 |
| H 400×200×8×13 | 81.92 | 64.3 | 22,965 | 1,286 |
Quick Reference
Deformed bar DB16 (SD40)
Standards Library
Everything a Structural Engineer Needs
Code-Based Logic
AISC 360 and ว.ส.ท. methods, with the code clause and edition shown on every result.
Transparent Breakdown
Governing equations, every substitution step and a variable list — check the numbers by hand.
Thai Practice Units
kg, cm and ksc as used in Thai structural practice, with SI references where it helps.
Connected Data
Pick an H-beam from Civil Data and open the weld calculator with its dimensions already filled in.
Zero Installation
Works in any browser on desktop, tablet or phone — always the latest version.
Dark Mode
Comfortable on site and at night — the whole app follows your system theme.