Specifications include, but are not limited to: ¾” Class A Road Stone should meet Iowa DOT Standard Specification 4120.04 (See Attachment 5)
3” Road Stone; while there is no Iowa DOT standard for this rock, we feel it best matches fits with Macadam Stone, so this should meet Iowa DOT Standard Specification 4122 (See Attachment 5)
3”-6” Erosion Stone, Classes D and E Rip Rap and Gabion Stone should meet Iowa DOT Standard Specification 4130 (See Attachment 5)
3/8” Minus, 1.5” Road Stone, 1”-2” and 3” Clean Stone and Class D-1 Road Stone have no Iowa DOT Standard Specification, so if ASME specifications are available we will accept those.
All rock products should conform to the Gradation Table (See Attachment 5)
Rock must be delivered by the bidder or their sub-contractor to requested site in a timely manner, generally within seven (7) calendar days or less after verbal or written request.