Rodent guards are intended to
keep mice, rats, and other small rodents from entering
subdrain outlets, lighting towers, and
other areas. Approved sources are listed in the Materials Approved Products
Listing Enterprise (MAPLE).
REQUIREMENTS FOR RODENT
ON SUBDRAIN OUTLETS
guards shall be the same opening size for
protection of outlets.
requirements of Standard Road Plan DR-304.
2. All products of steel and iron shall meet the requirements of IM 107, Group 2, Buy America.
3. The method of attachment will be detailed in the plans for lighting towers and other applications.
Outlet guard examples:
REQUIREMENTS FOR RODENT GUARDS ON LIGHTING TOWERS
& OTHER APPLICATIONS
The rodent guard grate
shall be of the same material and the same opening size as described for
The method of attachment
will be detailed in the plans.
Requests for product approval
shall be made to the Office of Construction and Materials. A finished guard shall
accompany the approval request.
will be based upon test results of the sample. Approved products are
identified in the attached appendixes.
Rodent Guards will be accepted based on Approved Source with a certification statement.
The producer of certified rodent guards shall furnish, on each shipment day, a certified bill of materials or invoice which identifies the county, project number, contractor, and number of pieces. The certification of compliance shall be signed by a designated, responsible company representative and shall be stated as follows:
"The materials itemized in this shipment are certified to be in compliance with the applicable AASHTO and/or ASTM requirements and Iowa Department of Transportation Standard Plans and Specifications, IMs and meet the Buy America requirements as described in IM 107 for all steel, iron products and coatings."
Authorized Signature and Date