Detectable warning surfaces (truncated domes)
|Detectable Warning Surfaces (Truncated Domes) Products
|DURALAST Cast Iron: Coated or Uncoated
||ej (formerly East Jordan Iron Works)
|Cast Iron: Coated or Uncoated
||Neenah Foundry Co.
|IRON PED Cast Iron: Coated or Uncoated
||Mfg. by Neenah Foundry Co.
|CAST-DWD OR CAST CORP Cast Iron: Coated or Uncoated
|CAST-DWD Cast Iron: Coated or Uncoated
||Pioneer Detectable, LLC
||262-370-5355 or 877-270-3663
|Advantage Cast Iron: Coated or Uncoated
||Only accept cast iron plates manufactured by Neenah Foundry Co. for Advantage Tactile Systems. Check for "NF" marking on back.
|TufTile Cast Iron Tiles: Coated or Uncoated
||TufTile ADA Tactile Products
||Irondome Cast Iron
||ADA Solutions, Inc.
*NOTE: Federal Aid Projects require US Code of Federal Regulations 23CFR635.410, the "Buy American Steel and Iron Regulation" be followed. This is stated in the Contract Special Provisions (1601) SOURCE OF SUPPLY AND QUALITY. The iron detectable warning surfaces on this list may or may not be made in the USA. It is the contractors responsibility to ascertain the country of origin before installing or purchasing detectable warning surfaces, if the above regulation applies. At this time MnDOT is only allowing cast iron detectable warning surfaces. Approval Status is based upon the individual foundry and the submitted pattern. A change in the foundry or pattern voids the approval and a new sample must be submitted.