Section 1206 – casting and adjustment




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SECTION 1206 – CASTING AND ADJUSTMENT



1206-1 DESCRIPTION
This item shall consist of furnishing and adjusting new castings on existing manholes in accordance with this section, the details and plans at the locations indicated on the plans, or as directed by the ENGINEER. This item includes adjusting new castings installed within the same project.
This item shall include the resetting of manhole frames and covers, inlet frames and covers, City water works valve boxes, or other accessories requiring adjustment to new lines and grades where such accessories are public property. Unless otherwise indicated on the plans, adjustments, replacements, and repairs to private property shall be exempt from this item.
This item shall include the furnishing of new castings, grating, or covers specifically indicated on the plans. The CONTRACTOR, however, will be required to replace, at its own expense, any damaged parts resulting from its operations.
1206-2 MATERIALS
1206-2.1 Materials shall conform to Subsection 1205-2.
1206-2.2 Flexible Foam Expansion Joint materials shall meet the requirements of ASTM D5249, TYPE 2, ASTM D1752, Sections 5.1 through 5.4 with the compression required modified to 10 psi and 25 psi maximum. This material shall be non-gassing and shall be compatible with hot pour joint sealants.
1206-3 CONSTRUCTION REQUIREMENTS
1206-3.1 GENERAL. The methods of construction shall conform insofar as applicable to the requirements of Section 1205.
Existing manholes, inlets, and valve boxes shall be adjusted to the elevation, grade, or dimensions as indicated on the plans and Standard Details or as ordered by the ENGINEER. The structures are assumed to be clean prior to the beginning of the adjustment construction unless otherwise agreed to by the CONTRACTOR and the ENGINEER. Castings shall be carefully removed and reinstalled by the CONTRACTOR as indicated. If the height of a rectangular casting is to be increased, the addition may be of solid concrete block or concrete as specified in Section 501. Solid concrete block shall not be used to increase the height of circular casting. In the event that the top part of the existing structure is weak and faulty, it shall be replaced as directed by the ENGINEER and the extension completed. Where the casting, grating, or cover is to be lowered, the masonry or concrete shall be removed to sufficient depth so that a seat of proper dimensions may be reconstructed to receive the casting, grating, or cover at the new grade. Castings shall be set in full mortar beds or otherwise secured as shown on the plans. Mortar shall be in accordance with Subsection 1205-2.2. Casting shall be set accurately to correct elevation and line so that no subsequent adjustment will be necessary. If necessary, the CONTRACTOR shall use tapered or sloped adjusting risers.
Upon completion of the adjustment, all surplus material shall be removed, and the structure and the site of the work shall be left in a neat and clean condition. The entire structure shall be thoroughly cleaned of any accumulation of silt, debris, or foreign matter of any kind and shall be free from such accumulations at the time of final inspection.
1206-3.2 WATER STOP BOX EXTENSION. Water service stop boxes are found within the area of construction very frequently. Adjustments in elevation that can be accomplished within the range of the adjustment sleeve of the stop box shall be considered incidental to the contract bid items. The CONTRACTOR is required to use due care in making these adjustments.
If the stop box cannot be extended to the proper grade within the above limits, it shall be adjusted by removing the lid and adding the required length and diameter of standard weight pipe with a standard pipe coupling and replacing the lid. The maximum adjustment shall be 2 feet under Bid Item 1206-4.10. Adjustments over 2 feet will be paid for under Section 126 of the Standard Specifications. Adjustments 2 feet and under shall be considered incidental.
1206-3.3 WRAPPED UTILITY BOXES. Utility structures, excluding manholes, encased in concrete sidewalks and pavements, shall be wrapped with a Flexible Foam Expansion Joint. Wrapped structures include valve boxes, hydrants, curb stop boxes, street light poles and foundations, traffic signal foundations, pedestrian signal pole foundations, and street signs.
Minimum thickness of the Flexible Joint will be 1/2 inch used on curb stop boxes, hydrants, street signs, pedestrian signal foundations, and valve boxes. Minimum thickness for larger structures shall be 3/4 inch to 1 inch maximum. Wrapped utility boxes shall be considered incidental.
1206-3.4 CASTING ADJUSTMENTS. All new and existing manholes located in concrete pavement surfaces shall have floating manhole castings installed as shown in standard details 1206-3 and 1206-4. The casting shall be installed as shown on the detail.
1206-3.5 ADJUSTING MANHOLE CASTING WITH RING AND I/I BARRIER. All newly installed manholes requiring adjustment under this bid item shall use the precast concrete adjusting rings with the AP/M PERMAFORM I/I BARRIER as manufactured by Strike Products or approved equal installed and field tested according to the manufacturers’ specifications. This item shall be paid for under Section 1206 “Castings and Adjustment.” All inlet castings shall be placed on the inlet facing the roadway with bolts, washers, and nuts installed in accordance with Standard Detail 1206-1.
The I/I Barrier shall have a watertight seal to the top of manhole barrel using butyl sealant or an approved equal as specified by the manufacturer of the I/I Barrier. The top of manhole barrel shall be free of dust and debris before applying the sealant and the I/I Barrier. Sufficient quantity of sealant must be used to accommodate flaws in the top of manhole barrel.
If deemed necessary by the ENGINEER, to check the seal of the I/I Barrier, the excavated area around the I/I Barrier shall be filled with water to a level above the joint between the I/I Barrier and the top of manhole barrel. If any leakage or moisture is present in the area inside the manhole around the seal, the CONTRACTOR shall remove the I/I Barrier and reseal at no additional cost.
The bottom ring placed on the I/I Barrier shall not be sealed to the I/I Barrier to allow infiltrated water to escape. All successive rings above the bottom ring shall be sealed together per manufacturer’s recommendations. The I/I Barrier shall extend a minimum of 2 inches above the top ring. If a floating manhole casting is used, the I/I Barrier extending above the top ring shall be trimmed so that the I/I Barrier does not interfere with the manhole casting’s ability to function. All pressure-reducing valve and air release valve manholes shall include a Cap ‘N Seal as manufactured by Strike Products.
All existing manholes outside the roadway surface that require adjustment shall be paid for under Section 1206-4.17 Adjust Manhole Casting in Unpaved Area. All existing manholes outside the roadway surface that require a new manhole casting shall have standard castings and shall be paid for under Section 1206-4.18 Furnish and Adjust Manhole Casting in Unpaved Area.
Valves, curb box extensions, and inlets shall confirm to the construction methods, and the measurement and payment shall meet the requirements of Section 1206.
1206-4 MEASUREMENT AND PAYMENT
1206-4.1 ADJUST MANHOLE CASTING IN ASPHALT PAVEMENT. This item shall be measured on an individual unit basis (EA) and paid for at the unit price bid for "Adjust Manhole Casting" complete as detailed and accepted by the ENGINEER.
1206-4.2 FURNISH AND ADJUST MANHOLE CASTING IN ASPHALT PAVEMENT. This item shall be measured on an individual unit basis (EA) and paid for at the unit price bid for "Furnish and Adjust Manhole Casting in Asphalt Pavement" complete as detailed and accepted by the ENGINEER.
1206-4.3 ADJUST TYPE 24" INLET CASTING. This item shall be measured on an individual unit basis (EA) and paid for at the unit price bid for "Adjust Type 24" Inlet Casting" complete as detailed and accepted by the ENGINEER.
1206-4.4 FURNISH AND ADJUST TYPE 24" INLET CASTING.

This item shall be measured on an individual unit basis (EA) and paid for at the unit price bid for "Furnish and Adjust Type 24" Inlet Casting" complete as detailed and accepted by the ENGINEER.


1206-4.5 ADJUST TYPE 36" INLET CASTING. This item shall be measured on an individual unit basis (EA) and paid for at the unit price bid for "Adjust Type 36" Inlet Casting" complete as detailed and accepted by the ENGINEER.
1206-4.6 FURNISH AND ADJUST TYPE 36" INLET CASTING. This item shall be measured on an individual unit basis (EA) and paid for at the unit price bid for "Furnish and Adjust Type 36" Inlet Casting" complete as detailed and accepted by the ENGINEER.
1206-4.7 ADJUST TYPE 72" INLET CASTING. This item shall be measured on an individual unit basis (EA) and paid for at the unit price bid for Adjust Type 72" Inlet Casting" complete as detailed and accepted by the ENGINEER.
1206-4.8 FURNISH AND ADJUST TYPE 72" INLET CASTING. This item shall be measured on an individual unit basis (EA) and paid for at the unit price bid for "Furnish and Adjust Type 72" Inlet Casting" complete as detailed and accepted by the ENGINEER.
1206-4.9 ADJUST TYPE 108" OR LARGER INLET CASTING. This item shall be measured on an individual unit basis (EA) and paid for at the unit price bid for "Adjust Type 108" or Larger Inlet Casting" complete as detailed and accepted by the ENGINEER.
1206-4.10 FURNISH AND ADJUST TYPE 108" OR LARGER INLET CASTING. This item shall be measured on an individual unit basis (EA) and paid for at the unit price bid for "Furnish and Adjust Type 108" or Larger Inlet Casting" complete as detailed and accepted by the ENGINEER.
1206-4.11 ADJUST VALVE BOX IN ASPHALT PAVEMENT. This item shall be measured on an individual unit basis (EA) and paid for at the unit price bid for "Adjust Valve Box" complete as detailed and accepted by the ENGINEER.
1206-4.12 WATER STOP BOX EXTENSION. This item shall be measured on an individual basis (EA) and paid for at the unit price bid for "Water Stop Box Extension" complete in place and accepted by the ENGINEER.
1206-4.13 WRAPPED UTILITY BOXES. This item shall be measured and paid at the unit price bid per each (EA) “Wrapped Utility Box” complete in place as detailed and accepted by the ENGINEER.
1206-4.14 ADJUST VALVE BOX IN CONCRETE. This item shall be measured on an individual basis (EA) and paid for at the unit price bid for “Adjust Valve Box in Concrete” complete as detailed and accepted by the ENGINEER.
Valve boxes located outside of concrete or paved areas, such as in street boulevards, shall be measured and paid for at one-half the unit price bid for “Adjust Valve Box.”


      1. ADJUST MANHOLE CASTING IN CONCRETE. This item shall be measured on an individual unit basis (EA) and paid for at the unit price bid for “Adjust Manhole Casting in Concrete.


1206-4.16 FURNISH AND ADJUST MANHOLE CASTING IN CONCRETE. This item shall be measured on an individual unit basis (EA) and paid for at the unit price bid for “Furnish and Adjust Manhole Casting in Concrete” complete as detailed and accepted by the ENGINEER.
1206-4.17 ADJUST MANHOLE CASTING IN UNPAVED AREA. This item shall be measured on an individual unit basis (EA) and paid for at the unit price bid for “Adjust Manhole Casting in Unpaved Area” complete as detailed and accepted by the ENGINEER.
1206-4.18 FURNISH AND ADJUST MANHOLE CASTING IN UNPAVED AREA. This item shall be measured on an individual unit basis (EA) and paid for at the unit price bid for “Furnish and Adjust Manhole Casting in Unpaved Area” complete as detailed and accepted by the ENGINEER.
1206-4.19 ADJUST VALVE BOX IN UNPAVED AREA. This item shall be measured on an individual unit basis (EA) and paid for at the unit price bid for “Adjust Valve Box in Unpaved Area” complete as detailed and accepted by the ENGINEER.


1206 -

Rev. April 2014




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