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Basic Statics problem, forces on a Truss 
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#1
Feb1513, 06:49 PM

P: 15

1. The problem statement, all variables and given/known data
The truss is supported by a pin at A and roller at B. Determine the support reactions. 2. Relevant equations sum of forces along yaxis, sum of forces along xaxis, sum of all torques 3. The attempt at a solution Sum of x= Fax+ Fbx+ 5sin45=0 Sum of y=Fay+Fby10 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 : ) 


#2
Feb1613, 01:44 AM

P: 699

In a real structure there would be a lot more forces representing selfweight, 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.



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