1.

The_required_section_modulus_of_the_channel/I-section_purlin_can_be_determined_by$

A. Z<sub>pz</sub> = M<sub>y</sub>γ<sub>m0</sub>/f<sub>y</sub> + (b/d)(M<sub>z</sub>γ<sub>m0</sub>/f<sub>y</sub>)
B. Z<sub>pz</sub> = M<sub>z</sub>γ<sub>m0</sub>/f<sub>y</sub> + (b/d)(M<sub>y</sub>γ<sub>m0</sub>/f<sub>y</sub>)
C. Z<sub>pz</sub> = M<sub>z</sub>γ<sub>m0</sub>/f<sub>y</sub> + 2.5(b/d)(M<sub>y</sub>γ<sub>m0</sub>/f<sub>y</sub>)
D. Z<sub>pz</sub> = M<sub>y</sub>γ<sub>m0</sub>/f<sub>y</sub> + 2.5(b/d)(M<sub>z</sub>γ<sub>m0</sub>/f<sub>y</sub>)
Answer» D. Z<sub>pz</sub> = M<sub>y</sub>‚âà√≠‚Äö√¢‚Ä¢<sub>m0</sub>/f<sub>y</sub> + 2.5(b/d)(M<sub>z</sub>‚âà√≠‚Äö√¢‚Ä¢<sub>m0</sub>/f<sub>y</sub>)


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