【HVAC Version】Daily Question 20180327
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For rectangular ducts insulated using the nail-and-adhesive method, the number of insulation nails at the top of the duct is ( ). (A) 3 per/m2 (B) 6 per/m2 (C) 10 per/m2 (D) 16 per/m2 Answer: B
There is no correct answer； The distribution of insulation nails in rectangular ducts or equipment should be even; the number of such nails should be no less than 16 per square meter on the bottom surface, no less than 10 on the sides, and no less than 8 on the top surface