622RESETTING GRATINGS AND COVERS FOR CATCH

505

622.02Materials

All new materials used shall be in accordance with the requirements of Section 621, plan details, and Division 800, Materials.

622.03Construction Requirements

Heads, covers, and/or gratings of existing manholes, inlets, or catch basins that are raised, lowered, or moved in elevation without moving the structure proper will be considered reset. All work shall be done in a workmanlike manner by competent workmen and the unit re-established in proper working order at its new elevation. Any manhole, inlet, or catch basin heads, covers, gratings, or other material broken, destroyed, lost, or rendered unfit for reuse through carelessness, negligence, or improper handling of the work, shall be replaced by the Contractor without extra compensation. Concrete and brick masonry work shall conform to requirements of Sections 620 and 613, respectively. When adjustments to manholes, inlets, or catch basins require the removal of a portion of the existing facility, the Engineer will designate that portion of the structure to be removed. The removal of such is considered incidental to the work and the cost included in the unit price bid for the reset item. Should the Contractor remove any portions of the structure in excess of that directed by the Engineer, he shall restore the structure to the designated removal line without additional compensation.

622.04Method of Measurement

Manhole covers reset and gratings reset will be measured individually as one complete unit of the base height or less as provided by the plan details. Where adjustments to the manhole covers or gratings reset exceed the base unit height, measurement and payment for the excess height will be made as provided in Articles 621.04 and 621.05 for Manhole or Inlet Units.

622.05Basis of Payment

unit price for Manhole Covers Reset, which shall be payment in full for all material, equipment, tools, labor, and incidentals necessary to complete the work.

for Gratings Reset, which shall be payment in full for all material, equipment, tools, labor, and incidentals necessary to complete the work.

622-A Manhole Covers Reset - per each 622-B Gratings Reset - per each CURB, GUTTER, AND COMBINATION CURB AND GUTTER

623.01Description

This Section shall cover the work of constructing Portland cement concrete gutter, curb, or combination curb and gutter, constructed with or without metal reinforcement. All of which shall be constructed in accordance with the plan details and these specifications at the locations shown on the plans or established in conformity with the lines, grades, dimensions, and cross sections shown on the plans or designated.

623.02Materials

All materials shall conform to the requirements of Division 800, Materials. Concrete shall conform to the requirements of Section 501. Expansion joint filler shall be as specified in Section 832.

623.03Construction Requirements

Concrete mixes shall be provided by Section 501, with Class A concrete being used with standard forms and either a Class A or Class C concrete mix, modified as deemed necessary by the Testing Engineer, to fit the type curbing machine being used. CURB, GUTTER, AND COMBINATION CURB AND GUTTER 506

The foundation shall be constructed or excavated to the required depth below the finished surface in accordance with the cross section shown on the plans or as designated. All soft or other unsuitable material shall be removed and replaced with suitable material, in layers not to exceed 4 inches {100 mm} compacted. The foundation shall be compacted as provided for the applicable types of material involved.

If provided by the plans and/or proposal, foundation backfill to replace unsuitable material shall be placed and constructed as provided in Section 214. No direct payment will be made for foundation backfill, except when the proposal includes a unit price for this pay item.

The Contractor shall use standard type metal forms as noted herein or, if requested in writing and approved by the Department, an approved automatic extrusion type curb and/or gutter machine.

These forms shall be metal, except for radial sections, straight, and free from warps and of sufficient strength, when staked, to hold the concrete true to line and grade without distortion. They shall provide the approved typical section and depth of the section shown on the plans. Radial or curved forms may be of flexible metal or a wood form of approved design. Bent or damaged forms shall not be used. All forms shall be securely staked, braced, and held together to the exact lines and grades established and shall be kept sufficiently tight to prevent leakage of mortar. All forms shall be cleaned and oiled with a suitable oil immediately before concrete is placed against them.

Any automatic extrusion type curb and/or gutter machine considered for approval must be demonstrated to produce a section conforming to the dimensions, cross-section, lines, and grades shown on the plans within the tolerances provided in Item 623.03(h)2 for formed curbs and/or gutters. Failure to consistently produce an acceptable product shall be cause to withdraw approval of the machine and order the use of standard forms. All types of curbs, gutter, and combinations shall be placed in one operation, to the depth of cross section specified on the plans. The use of a two stage operation will not be permitted.

Gutter, curb, and combination curb and gutter shall be constructed in sections of the lengths shown on the plans. The length of section may be reduced where necessary to form closure.

The handling, storage, proportioning, and mixing of concrete shall conform to the requirements of Section 501.

All expansion, contraction, and construction joints shall be constructed as shown on the plans and in accordance with the requirements of Article 501.03. If not shown on the plans, joints shall be placed as follows:  Expansion joints shall be placed in curb and/or gutter to match those in concrete pavement where the two are adjacent.  Expansion joints shall be 3/4 of an inch {20 mm} wide. They shall be placed where curb, gutter or combined curb and gutter terminate against concrete driveways and other concrete structures except inlets. The joints shall be placed at least 20 feet from the location of the termination of the curb, gutter or combined curb and gutter at inlets.  Expansion joint filler and sealer shall meet the requirements given of Articles 832.01 and

832.02. Expansion joint filler shall extend from the bottom of the curb and/or gutter to

within 1 inch {25 mm} of the top; the sealer shall be 3/4 of an inch {20 mm} thick and shall be recessed 1/4 of an inch {6 mm} from the top.  Contraction joints shall be placed in curb and/or gutter to match those in concrete pavement where the two are adjacent, but in no instance more than 20 feet {6 meters} between joints. The contraction joints shall be sawed or otherwise cut 2 inches {50 mm}