Construction & Materials
Truss Method of Joints Calculator
Solve the two unknown member forces at a truss joint using static equilibrium (method of joints).
Your inputs
Change any value to update the result instantly.
Force in member 1
-5 kN
Force in member 2
-8.66 kN
Member 1 state
-1 compression
Member 2 state
-1 compression
Formula and working
ΣFx = 0, ΣFy = 0 at the joint
- 1
Collect the inputs
Member 1 angle from horizontal = 30 °; Member 2 angle from horizontal = 120 °; Applied load (horizontal) = 0 kN; Applied load (vertical, downward positive) = 10 kN
- 2
Apply the formula
ΣFx = 0, ΣFy = 0 at the joint
- 3
Result
Force in member 1 = -5 kN
Frequently asked questions
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
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