811WEEP HOLES, PAVEMENT SUBDRAINS AND WALL DRAINS

810.04 Method of Measurement.

810.04.1 Bar Reinforcement and Spiral Wire. "Bar Reinforcement" and "Spiral Wire", both plain and deformed and galvanized and uncoated, will be measured by the total number of pounds of each type actually placed in accordance with the Plans and/or as directed by the Engineer. The weight of plain or deformed bars will be computed using the unit weights indicated in the AASHTO LRFD Bridge Design Specifications. The weight of clips, ties, separators, chairs, mechanical splices, or other material used for fastening the reinforcing in place shall not be included for payment. No allowance will be made for the weight of the galvanizing in computing the weight of

galvanized bar reinforcement. 810.04.2 Wire Fabric Reinforcement. "Welded Wire Fabric Reinforcement," galvanized and uncoated, will be measured by the number of square f eet actually installed in accordance with the Plans and/or as directed by the Engineer. Galvanized coating of fabric reinforcement will not be measured separately for payment. 810.05 BASIS OF PAYMENT.

810.05.1 Bar Reinforcement and Spiral Wire. The accepted quantities of "Bar Reinforcement"

and "Spiral Wire" will be paid for at their respective contract unit prices per pound as listed in the Proposal. The prices so-stated constitute full and complete compensation for all labor, materials, equipment and incidentals required to finish the work, complete and accepted by the Engineer. 810.05.2 Wire Fabric Reinforcement. The accepted quantities of "Wire Fabric Reinforcement" will be paid for at their respective contract unit prices per square foot as listed in the Proposal. The prices so-stated constitute full and complete compensation for all labor, materials, equipment and incidentals required to finish the work, complete and accepted by the Engineer.

811.01 DESCRIPTION. This work consists of the provision of weep holes through abutments and

walls; pavement subdrains through bridge decks; and wall drains behind abutments and walls, at the locations indicated on the Plans or as directed by the Engineer, all in accordance with these Specifications. 811.02 MATERIALS.

811.02.1 Weep Holes. Unless otherwise specified, weep holes shall be 4 inches in diameter,

Schedule 40 polyvinylchloride (PVC) pipe. 811.02.2 Pavement Subdrains. Unless otherwise specified in the Special Provisions, pavement 8−84 subdrains shall be either 2-inch diameter PVC pipe or 2-inch diameter ductile iron pipe. Ductile iron pipe shall conform to the requirements of Subsection M.04.02.1 of these Specifications.

811.02.3 Wall Drains. Unless otherwise specified in the Special Provisions, wall drains shall be perforated bituminous coated corrugated metal pipe conforming to the requirements of Subsection

811.02.4 Filter Stone shall conform to the requirements of Subsection M.01.07.

811.02.5 Filter Fabric shall be one of those materials included in the Department's Approved

Materials List. 811.03 CONSTRUCTION METHODS.

811.03.1 Weep Holes. In order to drain backfill material, weep holes shall be placed through

abutments and retaining walls at those locations indicated on the Plans. Unless connected to wall drains, dry wells consisting of a total of 5-to-6 cubic feet of filter stone shall be constructed at the inlet end of all weep holes to act as filter pockets. Filter stone shall be encased in burlap or woven plastic filter fabric. A filter fabric screen shall be cemented to the back face of the wall prior to placement of the filter stone bags. The filter fabric screen shall extend past the filter stone bag perimeter by at least 1 foot. The outlet end of weep hole pipe shall extend 1 inch beyond the surface of the concrete to form a drip element. Pipes shall be sloped downward toward the face of the wall or abutment at 1/4-inch per foot. Pipes shall be located 6 inches above finished grade and shall be spaced at 10-foot on centers.

811.03.2 Pavement Subdrains. The subdrains shall be constructed to the dimensions indicated

on the Plans. They shall be placed along the face of curbs at the locations indicated on the Plans or as directed by the Engineer. Pavement subdrains shall be installed after the waterproofing membrane has been placed and before the bituminous course is laid down. The waterproofing membrane shall be cut with a sharp blade so that tabs can be folded into the drain hole. The drain cap can then be installed in the drain hole. Care shall be exercised to prevent displacement of the drain cap as the bituminous courses are placed. 811.03.3 Wall Drains. The pipe shall be laid to the lines and grades indicated on the Plans or as directed by the Engineer. Pipe shall be placed on well compacted backfill materials. The perforat-ed side of the pipe shall be placed down. Filter material shall be placed around the pipe to form a cover of not less than 6 inches unless otherwise directed by the Engineer. The filter material shall be carefully tamped around the pipe. 8−85811.04 METHOD OF MEASUREMENT.

811.04.1 Weep Holes and Pavement Subdrains. Unless covered by a Special Provision,

together with a corresponding Proposal Item, weep holes and pavement subdrains will not be measured separately for payment. 811.04.2 Wall Drains. "Wall Drains" will be measured by the number of linear feet actually installed in accordance with the Plans and/or as directed by the Engineer. 811.05 BASIS OF PAYMENT.

811.05.1 Weep Holes and Pavement Subdrains. Unless covered by a specific Proposal Item,

materials for the installation of weep holes and pavement subdrains will not be paid for separately, but will be included as incidental items in the respective contract unit prices per cubic yard as listed in the Proposal for the applicable classes of Portland cement concrete. 811.05.2 Wall Drains. The accepted quantity of "Wall Drains" will be paid for at the contract unit price per linear foot as listed in the Proposal. The price so-stated constitutes full and complete compensation for all labor, materials, and equipment, including fittings and filter stone, filter fabric, and all incidentals required to finish the work, complete and accepted by the Engineer. SECTION 812 WATER STOPS

812.01 DESCRIPTION. This work consists of the furnishing and installation of waterstops in

various types of concrete joints at the locations shown on the Plans or as directed by the Engineer, all in accordance with these Specifications. 812.02 MATERIALS. Polyvinyl Chloride (PVC) Waterstops. PVC waterstops shall be manufactured by the extrusion process from an elastomeric plastic compound, the basic resin of which shall be PVC. The compound shall contain any additional resins, plasticizers, stabilizers, or other materials needed to assure that, when the material is com pounded, it will meet the performance requirements given in the table below. No reclaimed PVC or other material shall be used. The PVC material shall comply with the fo llowing physical require ments when tested under the indicated ASTM test method.