§174.090. Permeability of spaces.
46 C.F.R. § 174.090
When doing the calculations required in § 174.065—
The permeability of a floodable space, other than a machinery space, must be as listed in Table 174.090; and
Calculations in which a machinery space is treated as a floodable space must be based on an assumed machinery space permeability of 85%, unless the use of an assumed permeability of less than 85% is justified in detail.
Notes, amendments, and revision history
Authority
Authority: 42 U.S.C. 9118, 9119, 9153; 43 U.S.C. 1333; 46 U.S.C. 3306, 3703; E.O. 12234, 45 FR 58801, 3 CFR, 1980 Comp., p. 277; Department of Homeland Security Delegation No. 0170.1. Section 174.180 also issued under sec. 617, Pub. L. 111-281, 124 Stat. 2905.
Source
Source: CGD 79-023, 48 FR 51048, Nov. 4, 1983, unless otherwise noted.