Author Question: When joining rigid fiberboard duct modules, the end flaps are secured with _____. a. 1-inch ... (Read 60 times)

V@ndy87 · **on:** Jul 24, 2018

When joining rigid fiberboard duct modules, the end flaps are secured with _____.

a. 1-inch staples approximately 2-1/4 inches on center
b. 1-inch outward clinching staples approximately 2 inches on center
c. 1/2-inch outward clinching staples approximately 2 inches on center
d. 1/2-inch stainless steel staples approximately 2-1/2 inches on center

Question 2

When heat-activated tape is used for duct closure, before applying any sort of stress, all joints and seams
should be allowed to cool to a temperature below _____.

a. 100F
b. 125F
c. 150F
d. 175F