Hennepin County

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PROJECT QUESTION: Can the acceptable fiber dosage rate required for the preapproved product Forta Ferro listed in Division SB-6 for structural concrete for bridge decks be reduced from 5 pounds per cubic yard to 4 pounds per cubic yard?

Question:
Can the acceptable fiber dosage rate required for the preapproved product Forta Ferro listed in Division SB-6 for structural concrete for bridge decks be reduced from 5 pounds per cubic yard to 4 pounds per cubic yard?

Answer:
The preapproved products and dosage rates listed in SB-6 2.A.5.b (2) will remain unchanged. Alternate dosage rate requirements as listed in SB-6 2.A.5.b (2) may be proposed by the Contractor following contract award, mix design, preliminary testing and submittal review and acceptance under the current Special Provision. Manufacturer recommendations, testing and experience regarding appropriate dosage rate requirements will be considered in the Engineers final determination if the Contractor were to propose alternate dosage rate requirements.