312 IAC 11-2-20
312 IAC 11-2-20 "Riprap" defined
Cite as Ind. Admin. Code tit. 312, r. 11-2-20
Sec. 20. "Riprap" means angular, limestone rock that satisfies each of the following conditions:
(1) No individual piece weighs more than one hundred twenty (120) pounds.
(2) At least ninety percent (90%) of the material passes through a twelve (12) inch sieve.
(3) Not more than ten percent (10%) of the material passes through a six (6) inch sieve.