Hennepin County

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PROJECT QUESTION: MCES Special Provisions - grout for annular space . . .

Question: On page 135/631 of the specs (MCES special provisions), it lists a grout for annular space between tunnel and carrier pipe and lists specs for cellular (foam) concrete grout. Shall this material be used elsewhere such as for the permeable lightweight cellular concrete?

Response: The cellular (foam) concrete grout shall be used within the annular space as specified AND shall be used for all utility pipeline abandonments.