Tile Frontage Specifications:  

Click here for diagram

1.  Granular backfill and bedding shall be No. 8 stone, No. 6 stone, No. 411 stone, No. 304 stone, pea gravel, screened bank gravel, or other material approved by the Ashtabula County Engineer. 

2. A 6" swale shall be maintained at all times to prevent water from running onto the roadway surface.  

3. The tile shall be galvanized corrugated steel, reinforced concrete, or corrugated polyethylene pipe.  the polyethylene pipe must be double wall (smooth interior), Hancor HiQ, ADS N-12, or equal.  Perforated pipe is encouraged. 

4. The amount of bedding required under a pipe larger than 18" in diameter must be determined on an individual basis, depending on site characteristics and the pipe material being used.  In no case shall bedding be less than 4" thick for a pipe larger than 18" in diameter.  Polyethylene pipe shall have compacted granular bedding to 3/4 of its diameter in addition to the bedding below the pipe.  

5. The flow line shall be established by the County Engineer or his representative. 

6. The pipe diameter shall be determined by the County Engineer or his representative.  The minimum pipe diameter shall be 12".  For crest of hill situations 6"ø minimum tile may be used 100' each way from break in drainage. 

7.  Catch basin shall be required on the upstream side of all driveways.  Maximum distance between catch basins shall be 200', or as determined by the engineer or his representative.  

A printable version of the permit application is available for download at the bottom of this page.  (Adobe Acrobat Reader required)

NOTE: Tile under driveways shall be installed according to driveway pipe requirements (See Below).  

Driveway Culvert Specifications

Click here For Diagram

1. The pipe length shall be at least the driveway width plus 4 times the depth of the existing ditch.  The minimum pipe length shall be 30 feet. 

2. The depth of the existing ditch shall be defined as the vertical height as measured from the existing road berm to the bottom of the existing ditch

3. The bedding shall be No. 8 stone, No. 6 stone, No. 411 stone, No. 304 stone, pea gravel, screened bank gravel (ODOT 410), or other material approved by the County Engineer. 

4. The pipe material shall be galvanized corrugated steel (16 Ga. min.), reinforced concrete pipe, American standard steel pipe (3/8" min wall thickness), Polyethylene double wall (smooth interior), Hancor HI-Q, ADS N-12 or equal. 

5. The amount of bedding required under a pipe larger than 18" in diameter must be determined on an individual basis, depending on site characteristics  and on the pipe material being used. IN no case shall the bedding be less than 4" thick for a pipe larger then 18" in diameter.  Polyethylene pipe shall have granular bedding to 3/4 of its diameter in addition to the 2" below the pipe. 

6. The flow line shall be established by the County Engineer or his representative.  

7. The pipe diameter shall be determined by the County Engineer or his representative.  The minimum pipe diameter shall be 12".  

8. The pipe shall be backfilled with screened bank gravel (ODOT 410) or other material approved by the County Engineer. 

Click here  to obtain a printable version of the driveway/yard tile permit.  Adobe Acrobat Reader is required to view and print the file.