Minnesota Department of Transportation (MnDOT) · 2025 Standard Specifications for Construction
Section 3608 — Concrete Armor Units
Minnesota 2025 Standard Specifications for Construction, Section 3608. Full text, cross-references and related pay items on BuildSpec.
3608 CONCRETE ARMOR UNITS 3608.1 SCOPE Provide manufactured concrete armor units for use in stream bank, riverbank, and lakeshore stabilization, and for soil bioengineering construction. 3608.2 REQUIREMENTS Use interlocking concrete cross shaped units, each with 2 individual and symmetrical interlocking halves, to provide concrete armor units. Assemble the units with the 2 individual halves forming a 3-dimensional cross with 6 symmetrical legs. Assemble multiple, identical units into a continuous and flexible interlocking matrix with a 40 percent void space for soil filling and planting. Use…
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