Art. 605.02 Removing or Filling Existing Manholes
605.02 Materials. Materials shall be according to the following.
Item Article/Section
a.Portland Cement Concrete ..................................................................... 1020
b.Building Brick (Made from Clay or Shale) .......................................... 1041.01
c.Concrete Brick ......................................................................................... 1042 CONSTRUCTION REQUIREMENTS
605.03 Removing Existing Manholes, Catch Basins, and Inlets. Existing
manholes, catch basins, and inlets designated to be removed at locations where the existing inlet and/or outlet pipes are to be abandoned, shall be removed for the full depth of structure. If the abandoned pipes are not designated to be removed, the ends of the pipe at the structure shall be sealed with Class SI concrete or brick and mortar. After the concrete or mortar has set, the hole formed by removal of the structure shall be backfilled with sand and the sand compacted. Existing manholes, catch basins, and inlets designated to be removed at locations where flow is to be maintained in the existing storm sewer system or a proposed storm sewer is to be connected to the existing system, shall be removed to a depth of at least 4 in. (100 mm) below the bottom of the storm sewer system. All debris in the structure below the storm sewer shall be removed and replaced with compacted sand to the approximate elevation of the bottom of the sewer. The existing storm sewer shall then be connected to maintain flow with pipe of the same kind and size as the existing pipe, or the proposed storm sewer shall be connected to the existing system, and the joints sealed. If a proper connection cannot be made at a joint in the existing sewer, a collar of Class SI concrete shall be used to seal the joint. The hole formed by the removal of the structure shall then be backfilled with sand and the sand compacted.
605.04 Filling Existing Manholes, Catch Basins, and Inlets. The tops of all
existing manholes, catch basins, and inlets to be filled shall be removed to an elevation of at least 3 in. (75 mm) below the earth subgrade of the proposed improvement. All inlet and/or outlet connections shall be securely sealed with Class SI concrete or brick and mortar. After the concrete or mortar has set, the existing structure shall be filled with sand and the sand compacted.
605.05 Disposal of Excess Material. All material resulting from the filling or
removing of existing manholes, catch basins, and inlets shall be disposed of by the Contractor according to Article 202.03.
605.06 Basis of Payment. The work of removing existing manholes, catch
basins, and inlets at locations where the existing inlet and/or outlet pipes are to be abandoned will be paid for at the contract unit price per each for REMOVING MANHOLES, REMOVING CATCH BASINS, or REMOVING INLETS. The work of removing existing manholes, catch basins, and inlets at locations where flow is to be maintained in the storm sewer system will be paid for at the contract unit price per each for REMOVING MANHOLES TO MAINTAIN FLOW, Concrete Gutter, Curb, Median, and Paved Ditch Art. 606.04 REMOVING CATCH BASINS TO MAINTAIN FLOW, or REMOVING INLETS TO MAINTAIN FLOW. The work of filling existing manholes, catch basins, and inlets will be paid for at the contract unit price per each for FILLING MANHOLES, FILLING CATCH BASINS or FILLING INLETS. SECTION 606. CONCRETE GUTTER, CURB, MEDIAN, AND PAVED DITCH
606.01 Description. This work shall consist of constructing concrete curb,
concrete gutter, combination concrete curb and gutter, concrete median, or paved ditch.
606.02 Materials. Materials shall be according to the following.
Item Article/Section
a.Portland Cement Concrete ..................................................................... 1020
b.Reinforcement Bars and Welded Wire Reinforcement ...................... 1006.10
c.Preformed Expansion Joint Fillers .......................................................... 1051
d.Protective Coat ....................................................................................... 1023
e.Dowel Bars ........................................................................................ 1006.11
f.Polysulfide Joint Sealant .................................................................... 1050.03
g.Grout .................................................................................................. 1024.01
h.Synthetic Fibers (Note 1)
i.Polyurethane Joint Sealant ................................................................ 1050.04 Note 1. Synthetic fibers may be used in the concrete mixture for slipform applications. Synthetic fibers shall be Type III according to ASTM C 1116. The synthetic fiber shall have a minimum length of 1/2 in. (13 mm) and a maximum length of 0.75 in. (19 mm). The synthetic fibers shall be added to the concrete and mixed per the manufacturer’s recommendation and shall be on the Department’s qualified product list. The maximum dosage rate in the concrete mixture shall be 1.5 lb/cu yd (0.9 kg/cu m).
606.03 Equipment. Equipment shall be according to the following.
Item Article/Section
a.Forms ................................................................................................ 1103.05 CONSTRUCTION REQUIREMENTS
606.04 Excavation. The subgrade shall be excavated according to the cross
section shown on the plans. All unsuitable material shall be removed and replaced with suitable material, and the subgrade shall be compacted and finished to a firm, smooth surface.
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Source: Illinois Standard Specifications for Road and Bridge Construction, 2022 Edition. Pages 557–558 of 1,217. View official source ↗