The rods AB and CD are made of steel. Determine their smallest diameter so that they can support the dead loads shown. The beam is assumed to be pin connected at A and C. Use the LRFD method, where the resistance factor for steel in tension is ϕ = 0.9, and the dead load factor is γ_D= 1.4. The failure stress is σ_fail= 345 MPa.

Transcribed Image Text:

B 6 kN 5 kN 4 kN bamtzmtamts -3 m- -2 m- -2 -3 m-