1. Regulations
  2. title 40
  3. chapter I-i10
  4. part 63
  5. subpart G
  6. appendix-i 28

- 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 sheets0.2 c6-feet wide sheets0.17 7-feet wide sheets0.14 Panel construction d: 5 × 7.5 feet rectangular0.33 5 × 12 feet rectangular0.28

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).

AUTHORITY: 42 U.S.C. 7401

SOURCE: 57 FR 61992, Dec. 29, 1992, unless otherwise noted.