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10.26.2021-SBN-Standards-Manufacturer-Additions-Minor-Revisions-final
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10.26.2021-SBN-Standards-Manufacturer-Additions-Minor-Revisions-final
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5/6/2024 3:44:43 PM
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Board of Public Works
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City Property
Document Date
5/6/2024
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6" Min. <br />Grade Heavy Duty Casting <br />(Refer to Standard 4-6) <br />Adjusting Rings to Bring Frame to Grade <br />(Refer to Standard 4-6) <br />Drop Connection <br />Inlet <br />Pre-Cast Base <br />Outlet <br />Manhole <br />Brick Dam 2 5Dia. of Pipe <br />Eccentric Cone <br />8" Min. Pipe Size <br />4'-0" Dia. <br />(See Note 4) <br />Conc. Bench <br />(Class A) <br />Flowable Fill (Removable) <br />(See Note 7) <br />B-Borrow (Compacted)6"Min.6" Min. <br />(Typ.) <br />PLAN VIEW <br />Precast Manhole Section <br />B-Borrow Backfill Unless Otherwise <br />Approved by City EngineerConc. Bench <br />(Class A)(Typ.)4% Slope (Typ.) <br />Flow Channel <br />(See Note 3) <br />Seal all Joints w/ Conseal CS-102, <br />Bidco C-56 or Approved Equal. <br />Wrap all Joints with Conseal CS-212 <br />Exterior Joint Wrap or Approved <br />Equal. Apply Joint Wrap Primer per <br />Manufacturers Requirements. <br />Drop Connection <br />Flowable Fill (Removable) (See Note 8) <br />SECTION VIEW <br />Flow <br />Channel <br />4" Min. Clearance Between Lowest <br />Pipe Invert and Manhole Bottom 16" O.C.Copolymer polypropylene plastic <br />manhole steps with 1 2" grade 60 <br />reinforcing steel <br />6/26/18 <br />CITY OF SOUTH BENDItemRevision <br />STANDARD <br />EFFECTIVE DATE: <br />REF STD SPEC SEC <br />APPROVED/REVISED BY THE BOARD OF PUBLIC WORKS <br />STANDARDS FOR DESIGN <br />AND CONSTRUCTION <br />Kara M. Boyles, Ph.D., P.E. Date <br />STANDARD DROP MANHOLE 4-3 <br />4-2, 4-3 and 4-4 <br />June 26, 2018 <br />SECTION 4 - SANITARY <br />NOTES: <br />1.All manholes shall be manufactured and installed in compliance with ASTM C-478. <br />2.All pipe connections shall be made with integral resilient fittings complying with ASTM <br />C-923. <br />3.Flow channel shall conform to the shape of the connecting sanitary sewer and be made <br />through the bottom surface of the manhole. The channel walls shall be formed or <br />shaped to the full height of the crown of the outlet sewer. <br />4.Refer to manhole size vs. pipe size chart on Standard 4-2. <br />5.Completed manholes shall be tested with negative air pressure (vacuum) in accordance <br />with ASTM C-1244-93. <br />6.The Design Engineer to be responsible for setting pipe invert elevations to account for <br />minor losses through the manhole. <br />7.Refer to INDOT Standard Specification Section 213 for removable flowable fill <br />requirements.
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