379 603.11.3 -Prestressed Concrete Deck Panels: Characteristics Value Length 1/2 in ch Width 1/2 in ch Nominal Depth + 1/4 inch - 1/8 in ch Horizontal Alignment – Deviation from straightness of matting edge of panels 1/8 in ch Deviation of ends from plan dimension Horizontal Alignment 1/2 in ch Position of strands : Vertical ±1/8 inch Horizontal 1/2 in ch Concrete Cover 1/4 inch per 10 feet long . Bars
603.12 Handling, Storing, Transporting, and Erection :
The Contractor shall be responsible for proper handling, lifting, storing, hauling, and erection of all members so that they are placed in the structure without damage. Prestressed members shall be maintained in an upright position at all times and shall be handled and supported in a manner which prevents torsion. No member shall be moved from the casting yard until the member has been accepted. Storing of members shall be done with adequate blocking so that warpage or cracking will not occur. Blocking will be such that at least six (6) inches clearance is maintained above the surface on which the blocking is placed. Placement of the blocking from beam en ds shall be at locations not greater than three percent (3%) of the beam length. Concrete box beams shall be supported by the solid end block area during handling, storage, hauling, and erection. Members which are improperly stored and which become cracked , warped, or otherwise damaged in storage will be subject to rejection. Members when stacked, shall be separated by blocking capable of supporting the members. The blocking shall be arranged in vertical planes. Stacking of members shall be arranged such t hat lifting devices will be accessible and undamaged. Stacking shall not exceed two members high. All concrete beams or girders when erected, shall be securely tied and/or braced unless otherwise shown on the plans. When railroad or roadway traffic must b e maintained beneath girders or beams already placed, traffic shall be protected against falling objects during the erection of diaphragms and other structural members, during the placing of cast -in-place concrete, and during the erection and dismantling o f forms. Protection shall consist of nets or flooring with openings not larger than one ( 1) inch. When precast / prestressed concrete adjacent box beams are erected, the fit of mating surfaces will be such that excessive grout leakage will not occur. If s uch fit is not provided the joint shall be filled with grout or sealed with an acceptable caulking suitable to the Engineer.
603.13 Construction of Deck :
The variation in heights between beams shall not be more than ½ inch between adjacent box beams where there is no wearing surface. For adjacent box beam bridges with wearing surfaces, the differential shall not exceed ¾ inches. Dowel bar and lifting bolt holes shall be filled with non -shrink grout. Adjacent box beam units shall be transverse post tensioned by the use of high strength threaded bars, or by other methods as shown on the Plans. 380 603.14 -MEASUREMENT AND PAYMENT :
603.14.1 Method of Measurement: Precast/Prestressed concrete structural members will
be measured along the member centerline in linear feet. Deck panels shall be measured by area in square feet complete in place. Precast reinforced concrete three -sided structures shall be measured along the centerline of the erected structure in linear feet. Precast reinforced concrete headwalls and wingwalls for use with precast reinforced concrete thre e-sided structures shall be measured in square feet as measured on the exterior face of the member.
603.14.2 Basis of Payment: Precast /Prestressed concrete beams, deck panels, precast
reinforced concrete three -sided structures, and precast reinforced co ncrete headwalls and wingwalls will be paid for at the contract unit price bid for the items listed below, which price and payment shall be full compensation for furnishing all the materials and doing all the work prescribed in a workmanlike and acceptable manner including the cost of furnishing and manufacturing the concrete members; for labor, concrete, forms, conventional reinforcing steel, prestressing strands, inserts, anchorage devices, bearing pads, shims, grout, wingwalls and headwall connection har dware, joint sealing/waterproofing, and other devices, and for moving, transporting and erecting the finished product in accordance with the Plans and Specifications. For precast reinforced concrete three -sided structures where the headwall is cast integra l with the end structure unit, the headwall will be paid for in square feet as if it were not integral cast. Cast -in-place concrete diaphragms, curb, parapet, railing, and reinforcing steel for cast -in-place concrete are not included in this item.
603.14 2.1-Price Adjustments: Members found not in compliance with the
requirements of subsection 603.6.5 for compressive strength, but for which the evaluation indicates may still be used, will be paid for at a reduced price in accordance with the following formulas, depending on who purchased the members: FORMULA 1: Use the following price reduction formula when the members are used in a project constructed by a Contractor: Price Reduction = − '_ ' 5.0cc fXf x 40% of the Contract Unit B id Price FORMULA 2: Use the following price reduction formula when the beams are used in a project constructed by the Division: Price Reduction = − '_ ' 5.0cc fXf x IC Where: ' cf = 28-Day Design Compressive Strength, psi _ X = Average 28 -day Compressive Strength as determined in 603.6.5 IC(Formula 2 only ) = The invoiced cost of the member itself, as billed to the Division by the Fabricator. This cost shall not include other items associated with the member such as guardrail, bearing pads, etc. 381 603.1 5-PAY ITEMS : ITEM DESCRIPTION UNIT 603016 -* “size” Prestressed Concrete Box Beam Linear Feet 603017 -* “size” Prestressed Concrete Plank Beam Linear Feet 603018 -* “size” Prestressed Concrete I Beam Linear Feet 603019 -* “size” Prestressed Concrete Bulb T Beam Linear Feet 603020 -* “size” Prestressed Concrete Deck Panel Square Feet 603021 -* “size” Precast Concrete Deck Panel Square Feet * Sequence number