Title 7
SECTION 29.2557
29.2557 Subgrade.
§ 29.2557 Subgrade.Any grade modified by a special factor symbol.
[37 FR 13626, July 12, 1972. Redesignated at 49 FR 16757, Apr. 20, 1984 and 51 FR 40406, Nov. 7, 1986]';
Any grade modified by a special factor symbol.
[37 FR 13626, July 12, 1972. Redesignated at 49 FR 16757, Apr. 20, 1984 and 51 FR 40406, Nov. 7, 1986]