647 When compressive strength is used as a basis for acceptance of concrete, for determining when a latex modified concrete overlaid bridge deck may be opened to traffic, for determining form removal time, or for determining when a structure may be put into service, standard specimens shall be made and cured in accordance with ASTM C31 and shall be tested in accordance with ASTM C39. Strength requirements shall be in accordance with ASTM C94, with the exception that the strength shall be the average of the strengths of all cylinders tested at the age specified, with a minimum of two cylinders. This average shall be equal to or greater than the required strength. If the compressive strength of one or more cylinders in a strength test is below 75% of the required strength, the entire test will be considered as failed. 1300 Failure to meet the strength requirements will be cause for rejection of the quantity of concrete represented by the cylinders. Al l molds, facilities, and materials necessary to prepare and cure the specimens shall be furnished with no additional payment.
702.25 Field Drilled Holes in Concrete
This work shall consist of field drilling holes of the diameter and length shown on the plans or as directed. When vertical holes are to be drilled into the top of a concrete bridge deck, a 1310 minimum clearance of 2 in. shall be main tained between the bottoms of holes and bottom of slab. When vertical holes are to be drilled over a steel beam flange, the holes may be extended to the top of the beam flange. When vertical holes are to be drilled over a concrete I-beam, concrete box beam, concrete bulb-T beam, or concrete girder, the depths of the holes shall be as shown on the plans. If breakout occurs on the bottom of slab during the drilling process, the work shall be stopped, the breakout shall be repaired as directed, and an approved alternate drilling method shall be used to prevent breakout. When grouted holes are specified, the diameter and length of the holes shall be in 1320 accordance with the grout manufacturer’s recommendations.
702.26 Artificial Lighting
No portion of the work which cannot be finished during daylight hours shall be started unless written permission is given, in which case adequate lighting shall be provided and maintained.
702.27 Method of Measurement
Concrete will be measured by the cubi c yard in accordance with the neat lines shown on the plans or as directed. No deductions will be made for the volume of joint 1330 material, embedded reinforcement, encased p iles, or for a pipe with an area of less than 1 sq ft. Cast iron grates, basins, and fittings will be measured by the number of complete assemblies installed. Drainage pipe through concrete masonry will be measured in 702.27 648 accordance with 715. Field drilled holes will be measured by the number of holes drilled. Concrete in railings will be measured in accordance with 706.07. Reinforcing bars will be measured in accordance with 703.07. 1340
702.28 Basis of Payment
The accepted quantities of structural concrete will be paid for at the contract unit price per cubic yard of concrete, for the class and use specified. Cast iron grates, basins, and fittings will be paid for at the contract unit price per each assembly, complete in place. Steel drain pipe will be paid for at the contract lump sum price. Field drilled holes in concrete will be paid for at the contract unit price per each. Concrete in railings will be paid for in accordance with 706.08. Reinforcing bars will be paid for in accordance with 703.08. Drainage pipe through concrete masonry 1350 will be paid for in accordance with 715. If a foundation seal is constructed as s hown on the plans, it will be paid for at the contract price per cubic yard for concrete, foundation seal. If ordered to be done, or allowed to be done, payment will be made at a unit price per cubic yard equal to 75% of the contract unit price per cubic yard for class B concrete in footings. The excavation for the foundation seal will be paid for at the contract unit price per cubic yard for the class of excavation specified for the footing. Unless otherwise provided, the pay quantity for excavation for foundation seal will be equal to the theoretical volume bounded by the bottom of the proposed footing, the bottom of the approved 1360 excavation, and vertical planes 18 in. outside the neat line of the footing and parallel thereto, regardless of the quantity actually removed. If design of the structure requires sheeting to be outside these limits, the limits will be extended to 6 in. beyond the neat lines required by the design of the structure. If the Contractor chooses to construct a rectangular cofferdam around a U-shaped abutment in lieu of following the outline of the footing, the maximum allowable increase in the pay quantity above the theoretical shall not exceed 25%. The pay quantity for the foundation seal will be equal to the excavation volume described above. Payment will be made under: 1370 Pay Item Pay Unit Symbol Concrete, A, Substructure .......................................................... CYS Concrete, A, Superstructure....................................................... CYS Concrete, B, Above Footings .................................................... CYS Concrete, B, Footings ................................................................ CYS Concrete, C, ____ ...................................................................... CYS use Concrete, Foundation Seal ......................................................... CYS 1380 Field Drilled Hole in Concrete .................................................. EACH Grates, Basins, and Fittin gs, Cast Iron ...................................... EACH 702.28 The cost of forms, PVC for bridge floor drains, falsework, falsework piling, centering, expansion joints, preformed expansion joint filler, waterproofing, curing, finishing, and necessary incide ntals shall be included in the cost of the pay items. The cost of placing epoxy resin adhesive on existing concrete surfaces shall be included in the cost of new concrete which abuts the existing concrete. Payment for concrete used in footings in class X excavation will be made at the contract unit price only for the cubic yards placed within the neat lines of the footings as shown on the plans or as 1390 revised. If the Contractor elects to increase th e cement content as allowed herein, no additional compensation will be made. The cost of permanent metal forms shall be included in the cost of concrete, C, superstructure. The pay quantity of concrete in the slab will be computed from the dimensions shown on the plans, with no allowance for form deflection or geometry. Elastomeric bearings will not be paid for directly, unless otherwise specified. The 1400 cost thereof shall be included in the cost of the structural member they support. The cost of protecting existing footings to be extended shall be included in the cost of concrete, B, footings, unless otherwise specified. The cost of grout for grouting reinforcin g bars in place, the length of grouted hole recommended by the grout manufacturer in excess of the length shown on the plans, and the additional length of reinforcing bars required shall be included in the cost of field drilled hole in concrete. The cost of furnishing and installing polychloroprene sheeting shall be included 1410 in the cost of concrete, A, substructure. The cost of high density plastic bearing strips shall be included in the cost of concrete, A, substructure.