Calculating Truss Forces

Calculating Truss Forces PowerPoint PPT Presentation


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Calculating Truss Forces

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1. Calculating Truss Forces

2. Forces

3. Truss A truss is composed of slender members joined together at their end points. They are usually joined by welds or gusset plates.

4. Simple Truss A simple truss is composed of triangles, which will retain their shape even when removed from supports.

5. Pinned and Roller Supports

6. Solving Truss Forces Assumptions: All members are perfectly straight. All loads are applied at the joints. All joints are pinned and frictionless. Each member has no weight. Members can only experience tension or compression forces.

7. Static Determinacy A statically determinate structure is one that can be mathematically solved. A statically determinate truss will always work with this formula, but is possible for a statically indeterminate truss to work with this formula.A statically determinate truss will always work with this formula, but is possible for a statically indeterminate truss to work with this formula.

8. Statically Indeterminate

9. Statically Determinate

10. Static Determinacy Example

11. Equilibrium Equations

12. Equilibrium Equations

13. Equilibrium Equations

14. Using Moments to Find RFCY

15. Sum the Y Forces to Find RFAY

16. Sum the X Forces to Find RFAX

17. Method of Joints

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