Question 17.2: A single row of openings is alternately spaced on 4 and 3.5 ...

Structural Analysis and Design of Process Equipment

A single row of openings is alternately spaced on 4 and 3.5 in. center-to-center spacings. The opening diameters also alternate, with a 1.5 in. diameter opening followed by a 1.25 in. diameter opening. What is the minimum ligament efficiency for setting the thickness?

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