Assume an insulated vessel has a circumference of 62' (18.9 m) and a tan-tan height of 33'โ 9" (10.3 m). There will be 8 sections per course with 3" (8 cm) overlaps at the seams. Estimate the total number of 48" (1.22 m) roll jacket sections needed to cover the sidewall.
a. 32
b. 48
c. 72
d. 96
c. 72
Since the number of jacket sections per course is already given, only the number of
courses needs to be determined.
Visible width of jacket is 48" โ 3" = 45"
Divide the tan-to-tan height by 45":
33' 9" = 405"
405" รท 45" = 9 courses.
Total number of sections = 9 courses x 8 sections per course = 72 sections.
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