Truss Analysis Calculator
Solve member forces and reactions for Warren, Pratt, and Howe trusses
Truss Analysis Calculator
Simplified 3-panel truss analysis. Loads are applied downward at panel points.
Positive force = Tension · Negative force = Compression
P1 at L/3
P2 at L/2
P3 at 2L/3
Support Reactions
Member Forces
| Member | Force (kN) | Type |
|---|---|---|
| Bottom Chord B0-B1 | 17.778 | Tension |
| Vertical T1-B1 | 3.333 | Tension |
| Top Chord T1-T2 | -17.778 | Compression |
| Bottom Chord B1-B2 | 17.778 | Tension |
| Vertical T2-B2 | 16.667 | Tension |
| Bottom Chord B2-B3 | 35.556 | Tension |
| Diagonal B0-T1 | -22.222 | Compression |
| Diagonal T2-B3 | -44.444 | Compression |
| Bottom Chord B0-B1 | 17.778 | Tension |
Geometry
How to Use This Calculator
Enter your input values
Fill in all required input fields for the Truss Analysis Calculator. Most fields include unit selectors so you can work in your preferred unit system.
Review your inputs
Double-check that all values are correct and that you have selected the right units for each field. Incorrect units are the most common source of calculation errors.
Read the results
The Truss Analysis Calculator instantly computes the output and displays results with units. All calculations happen in your browser — no loading time and no data sent to a server.
Formula Reference
Truss Analysis Calculator Formula
See calculator inputs for the governing equation
Variables: All variables and their units are labeled in the calculator interface above.
When to Use This Calculator
- •Use the Truss Analysis Calculator when solving homework or exam problems that require quick numerical verification of your hand calculations.
- •Use it during the design phase to rapidly iterate on parameters before running detailed finite element simulations.
- •Use it when reviewing a colleague's calculation or checking a vendor's data sheet for plausibility.
- •Use it to generate reference data for a technical report or presentation without manual computation.
Related Calculators
Force Resolution Calculator
Resolve a force into horizontal and vertical components
Moment Calculator
Calculate moments about a point from multiple forces
Resultant Force Calculator
Find the resultant of multiple forces with magnitude and direction
Centroid Calculator
Calculate the centroid of composite shapes (rectangles and circles)
Area Moment of Inertia Calculator
Calculate the second moment of area for common cross-sections
Parallel Axis Theorem Calculator
Apply the parallel axis theorem to find moment of inertia about any axis