You are here: Home Business Center Design & Construction Project Support The 2019 and 2012 M Standards 2019 M Standard Plans 2019 M Standards Plan Sheets M-604-20 Manholes M-604-20 Manholes Cast-in-place, pre-cast, and T-base manhole details (3 sheets). https://www.codot.gov/business/designsupport/2019-and-2012-m-standards/2019-m-standards-plans/2019-m-standards-plan-sheets/m-604-20-manholes https://www.codot.gov/@@site-logo/siteLogo.png M-604-20 Manholes Cast-in-place, pre-cast, and T-base manhole details (3 sheets). M-604-20 Manholes Cast-in-place, pre-cast, and T-base manhole details.
M-604-20 Manholes Cast-in-place, pre-cast, and T-base manhole details (3 sheets). https://www.codot.gov/business/designsupport/2019-and-2012-m-standards/2019-m-standards-plans/2019-m-standards-plan-sheets/m-604-20-manholes https://www.codot.gov/@@site-logo/siteLogo.png M-604-20 Manholes Cast-in-place, pre-cast, and T-base manhole details (3 sheets). M-604-20 Manholes Cast-in-place, pre-cast, and T-base manhole details.
