Truss Problem 6.30: Urgent Help with Stress Calculation | 1020 Steel

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The discussion focuses on solving a truss problem involving stress calculations for a structure made of 1020 steel. The user has identified that the stress in member BC is 10.4 ksi (tension) and is seeking assistance in verifying this calculation. They mention that the safety factor for 1020 steel is 4.038 and express confidence in calculating the tension in member CD. The user suggests isolating the upright member CE and analyzing moments around pin E to aid in the calculations. The conversation emphasizes the need for clarity in the stress determination process.
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truss problem, urgent help!

Hey guys i need help with setting up this truss problem 6.30 which can be seen here,
http://www.mustangmods.com/data/16002/study1.jpg

I know the stress in bc is 10.4ksi (tension) and that the safety facotr for it from 1020 steel is 4.038, I just need help figure out how to figure out that the stress is 10.4ksi. thanks
 
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The Tension in CD is easy; find it.
Isolate upright member CE (Moments around pin E).
 

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