Re-bound-able non-metallic, drum-like, channelizing devices intended to provide temporary traffic channelizing shall meet the requirements of Article 4188.02. Approved brand names are listed in the Materials Approved Products Listing Enterprise (MAPLE).


All products submitted for approval must comply with the most recent edition of the Manual for Assessing Safety Hardware (MASH). Devices submitted with modifications to previously approved NCHRP-350 products must be fully compliant with the most recent edition of MASH.


It is the intent of the department to utilize products that comply with the most recent edition of MASH.


Manufacturers shall indicate MASH-16 compliance by December 31, 2021 to remain an approved product within MAPLE.



Approval of re-bound-able non-metallic drums will be based on the review of submitted technical data sheets and brochures furnished to the Iowa Department of Transportation, Construction and Materials Bureau, Ames, Iowa, and a test report from AASHTO Product Evaluation & Audit Solutions or other testing facility. A sample drum may be requested and required at the discretion of the Construction and Materials Bureau.



The manufacturer shall provide certification of conformance to specifications to the Construction and Materials Bureau, Example Follows:



Certification Statement


This is to certify that (manufacturer name, product number) this re-bound-able, non-metallic, drum-like, channelizing device meets the requirements of the applicable specification of the Iowa Department of Transportation.






Authorized Date and Signature




A responsible company representative shall sign the certification statement.