# Discussion on: Solution to Problem 113 Normal Stress

Following is a discussion on the Reviewer item titled: Solution to Problem 113 Normal Stress.

### how would you know if a

how would you know if a truss has a horizontal reaction at support ?

### Re: how would you know if a

1. There is a horizontal load or at least a horizontal component of a load.
2. For cantilever trusses, the rotation due to loads are resisted by horizontal reactions.

### Re: Discussion on: Solution to Problem 113 Normal Stress

In FBD 01, why is it that BC is not included in finding CF?

### Re: Discussion on: Solution to Problem 113 Normal Stress

Because we did the summation of Moment on joint C making the value of the vertical distance of BC 0 (zero)

### Re: Discussion on: Solution to Problem 113 Normal Stress

i stand corrected. Membrane BC didn't intersect with our section line which makes it outcast on the equation.

### Re: Discussion on: Solution to Problem 113 Normal Stress

The reason it is not included because the section method is used. The section passed the members BD, CD, and CF so BC will not be included.The left side of the truss is considered for the solution.

• Mathematics inside the configured delimiters is rendered by MathJax. The default math delimiters are $$...$$ and $...$ for displayed mathematics, and $...$ and $...$ for in-line mathematics.