City of Fort Dodge, Iowa

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• Notice to Bidder and of Public Hearing - G10 & M05-Phase 4 of CSI Hydraulic Upgrades
• 2019 Lane Striping Project - Plans and Specs
• 2019 Street Repair Project - Plans and Specs
• 2017 PCC Patch 926 Loop Project Plan Holders List
• Gateway Improvements - Phase I - bidding documents
• 2017 Street Repair Projects -Bidders call Engineering Office for Specs
• Advanced Metering Infrastructure and Meter Replacement Bid
• East Region Phase 3A - Notice to Bidders

More Like This

• Driveway Detail
• East Region Phase 3A - Notice to Bidders
• East Region Phase 3A - Notice of Public Hearing
• 2017 PCC Patch 926 Loop Project Plan Holders List
• Notice to Bidder and of Public Hearing - G10 & M05-Phase 4 of CSI Hydraulic Upgrades

   
  
Backfill

Suitable Backfill Material:  Class II, Class III, Class IVA, or Class IVB as defined in SUDAS Section 3010, 2.02

Unsuitable Backfill Material:  Includes, but is not limited to, the following materials:

1. Soils not classified as suitable backfill material, as defined in SUDAS Section 3010,2.02.
2. Individual stones or concrete chunks larger than 6 inches and averaging more than one per each cubic foot of soil.
3. Frozen materials.
4. Stumps, logs, branches, and brush.
5. Trash, metal, or construction waste.
6. Soils in clumps or clods larger than 6 inches, and without sufficient fine materials to fill voids during placement.
7. Environmentally contaminated soils.

Place backfill in lifts no greater than 6 inches thick.  Compact granular backfill to 65% relative density and other backfill material to 95% Standard Proctor Density.