SC Glass And Glazing Practice Questions - South Carolina Glass And Glazing Contractor Examination Exam

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A 104 lb lite will be lifted with two vacuum cups, each rated 75 lb on clean dry glass in the vertical position. The manufacturer requires a 2:1 safety factor on cup ratings. Is the lift acceptable?

Yes; 75 + 75 = 150 lb, which exceeds 104 lb No; the working capacity is (75 + 75) / 2 = 75 lb, which is less than 104 lb Yes, but only if the glass is wet so the cups seal better Yes, because vacuum-cup ratings already include an unlimited safety factor

Correct Answer:

No; the working capacity is (75 + 75) / 2 = 75 lb, which is less than 104 lb

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