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.