40 CFR Appendix Table 28 to Subpart G of Part 63, Deck Seam Length Factors a (SD) for Internal Floating Roof Tanks
|Deck construction||Typical deck seam length factor|
|Continuous sheet construction b:|
|5-feet wide sheets||0.2 c|
|6-feet wide sheets||0.17|
|7-feet wide sheets||0.14|
|Panel construction d:|
|5 × 7.5 feet rectangular||0.33|
|5 × 12 feet rectangular||0.28|
a Deck seam loss applies to bolted decks only. Units for S D are feet per square feet.
b SD = 1/W, where W = sheet width (feet).
c If no specific information is available, these factors can be assumed to represent the most common bolted decks currently in use.
d SD = (L W)/LW, where W = panel width (feet), and L = panel length (feet).