M-605-1 Subsurface DrainsDetails of different applications. https://www.codot.gov/business/designsupport/2019-and-2012-m-standards/2019-m-standards-plans/2019-m-standards-plan-sheets/m-605-1-subsurface-drainshttps://www.codot.gov/@@site-logo/siteLogo.png
