Basic Statics problem, forces on a Truss

In summary, the truss is supported by a pin at A and a roller at B. To determine the support reactions, we can use the equations of sum of forces along the x-axis, sum of forces along the y-axis, and sum of all torques. In this simplified example, the 10 kN load can represent the self weight and other permanent loads, while the 5 kN load can represent a simplified wind load.
  • #1
coffeebird
15
0

Homework Statement



The truss is supported by a pin at A and roller at B. Determine the support reactions.



Homework Equations



sum of forces along y-axis, sum of forces along x-axis, sum of all torques



The Attempt at a Solution



Sum of x= Fax+ Fbx+ 5sin45=0
Sum of y=Fay+Fby-10 -5sin45=0

I would like to know how the forces act on the truss, and why. It hasn't been very well explained to me. Thank you : )
 

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  • #2
In a real structure there would be a lot more forces representing self-weight, snow, wind, loads from internal cranes etc. In this case, which is a 'learning example' you could imagine the 10 kN load as representing the self weight and other permanent loads, and the 5 kN load as a simplified wind load, which, in reality would be a variable distributed load.
 

Related to Basic Statics problem, forces on a Truss

1. What is a truss and how does it work?

A truss is a structure composed of straight, slender members joined together at their ends by joints. It works by distributing forces evenly throughout the structure, making it strong and stable.

2. What are the forces acting on a truss?

The main forces acting on a truss are tension and compression. Tension is a pulling force that stretches the members of the truss, while compression is a pushing force that compresses the members.

3. How do you calculate the forces on a truss?

To calculate the forces on a truss, you need to use the principles of statics, which include resolving forces into their components and applying the equations of equilibrium to determine the unknown forces.

4. What is the maximum load a truss can support?

The maximum load a truss can support depends on the design and materials used. A well-designed truss can support a significant amount of weight, but it is important to consider factors such as the type of loading, the material strength, and the overall stability of the structure.

5. How can I ensure the stability of a truss?

To ensure the stability of a truss, it is important to design it with proper bracing and connections. Additionally, the joints and members should be able to withstand the forces acting on them, and the overall structure should be able to resist any external loads or moments. Regular maintenance and inspections can also help to ensure the stability of a truss over time.

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