Surface Tolerance, Alignment and Trueness, Plumb and Batter, Finish The Resident will measure the properties of surface tolerance, alig nment and trueness, plumb and batter and finish to ensure they conform to the following c riteria. If the concrete fails to meet any of these requirements a nd the Contractor fails to repa ir or mitigate the identified defects, to the satisfaction of the Resident, then there shall be no positive Quality Assurance Acceptance incentive payments on the respective lots.
A Surface Tolerance Surface tolerance of exposed horizontal an d sloping portions of the substructure, superstructure slabs, wearing surface, sidewalks, barriers and wingwalls will be measured with a 10-foot straightedge. Surface tolerance lim its are given in Table 3, B Alignment and Trueness Alignment and trueness will be measu red longitudinally along any vertical surface of any portion of the structure and shall not exceed a deviation of ¼ inch in 3 feet for structures up to 30 feet in length. Struc tures more than 30 feet in length will be subject to a maximum tolerance of 2 inches. C Plumb and Batter Columns and ot her vertical surfaces that wi ll remain exposed will be measured to determine actual batter and degree of verticalit y. Measurements will be taken after every placement. Vertical faces of columns will be measured at a minimum of two faces at right angles to each other. Other vertical surfaces will be measured once every 15 feet along the face of longitudinal walls. All measurements will be made on a per placement basis and will be subject to a tolerance of ¼ inch in 10 feet. D Finish Surface finish of conc rete surfaces will be evaluate d and repaired in accordance with Sections 502.09, 502.12, and 502.13, for each p lacement.
Rejection by Resident For material represented by an Accepta nce test with test results failing to meet the criteria specified in Table 1, the Department will, at its sole discretion:
concrete meeting the Contract requirements at no additional exp ense to the Department, or
Level Analysis specification formula.
502.1704 Acceptance Method A A lot size shall consist of the total quantity
represented by each class of concrete in the Contract. A lot sh all consist of a minimum of 3 and a maximum of 10 sublots.
05 Acceptance Method B A lot size shall consist of the total quantity
represented by each class of concrete in the Contract. A lot sh all consist of a minimum of 3 sublots.
06 Acceptance Method C The Department will determine t he acceptability
of the concrete through Acceptance testing. Acceptance tests w ill include compressive strength, air content and permeability. Method C concrete not meeting the requirements listed in Table 1 shall be removed and replaced at no cost to t he Department. At the Department’s sole discretion, material not meeting requirements may be left in place and paid for at a reduced price as described in Section 502.195.
07 Resolution of Disputed Acceptance Test Results The Co ntractor shall work
cooperatively with the Resident in maintaining Control Charts, as outlined in Subsection 106.4.3, in order to identify potential issues with any test re sults and take appropriate actions to address these issues before they become disputed iss ues. In cases where the Department may determine that removal of the affected placement is warranted or that the material is marginally acceptable and may remain in place and p aid for at a reduced rate, in accordance with Section 502.1703, Acceptance Methods A and B, t his Subsection provides recourse for the Contractor to contest the Department’s Accepta nce test results as follows, at no additional cost to the Department:
A Compressive Strength There may be cases where the Department’ s test results indicate that concrete must be removed and replaced, or that th e material is marginally acceptable and may remain in place and paid for at a reduced ra te. In these cases, and providing that the Contractor’s QC test results from a NETTCP c ertified laboratory for the same load are more than 500 psi higher than that of the Departm ent’s test results, the following procedure concerning compressive strength may be unde rtaken by the Contractor and witnessed by the Department, within 36 days of the placemen t date (within 64 days of the placement date in the case where fly ash at 20%, or greater , pozzolan cement replacement is used in the concrete mix):
accordance with the requirements of ASTM C42/C42M, Standard Tes t Method for Obtaining and Testing Drilled Cores and Sawed Beams of Concrete . The core strength acceptance and evaluation criteria included in ACI 318 shall not apply.
randomly selected locations to be representative of the entire volume of the sublot. The Resident and the Contractor’s representative shall agree on the sample locations prior to drilling. The specimens shall have a minimum diameter of 4 inches and a minimum length of 8 inches.
laboratory for processing for tes ting. The cores shall be prote cted from drying during transport. The Contractor shall make arrangements with t he appropriate Department laboratory for tes ting prior to beginning the coring process.
cored cylinders shall be averaged and then divided by a factor of 0.85. The resulting compressive strength shall be used by the Department in the final determination of
the acceptability of the material in question and shall replace the contested test result in computing pay adjustments for the Lot in question. If coring is not done within the 36-day time limit (or 64-day time limit, as applicable), the Department will not allow dispute testing of the sublot.
adequate as a result of the above procedure, then the concrete shall remain in place and payment will be adjusted using the test results from the ab ove procedure. If the Department concludes that the strength of the structural elemen t in question is unsatisfactory as a result of the above procedure, the original acceptance test result will remain in the lot and the Department will direct the Contr actor to take appropriate actions, as determined by the Department, and at no additional cost to the Department.
B Permeability In cases where the Department’s test results in dicate that the material is subject to removal and replacement according to section 502.192, the fo llowing procedure concerning permeability may be undertaken by the Contractor and witnessed by the Department, within four calendar days of the receipt of the results:
with the requirements of ASTM C42/C42M, Standard Test Method fo r Obtaining and Testing Drilled Cores and Sawed Beams of Concrete. Specimens shall have a diameter of 4 inches and a minimum length of 8 inches.
same load as the original Department specimen for each sublot i n question.
laboratory for processing for testing. The cores shall be prote cted from drying during transport. The Contractor shall make arrangements with the appr opriate Department laboratory for testing prior t o beginning the coring process.
TP-95. The resulting permeability value shall be used by the De partment in the final determination of the acceptability of the material in question and shall replace the contested test result in computing pay adjustments for the Lot in question.
adequate as a result of the above procedure, then the concrete shall remain in place and payment will be adjusted using the test results from the ab ove procedure. If the Department concludes that the permeability of the affected plac ement in question is unsatisfactory as a result of the above procedure, the original acceptance test result
will remain in the lot and the Department will direct the Contr actor to take appropriate actions, as determined by the Department, and at no additional cost to the Department.
C Entrained Air In order to dispute the Department’s test res ults, the Contractor must test material from the same sample as the Department. If the di fference between the Department’s and the Contractor’s air tests is equal to or grea ter than 0.6 percent, then the material shall be retested by both parties. If the difference b etween the retests is equal to or greater than 0.6 percent, the concrete placement will be suspen ded immediately. Both air meters will be checked for accuracy by either comparison to a t hird calibrated air meter or by use of an air meter calibration vessel. If either air meter is found to be out of calibration it shall be replaced immediately. Once it is demonstrated that the QC and Acceptance air meters agree within 0.6 percent, the concrete placement may res ume.
502.18Method of Measurement
cubic yard, in accordance with the dimensions shown on the Plans or authorized changes in the Plans, or as one lump sum unit, as indicated in the Schedul e of Items. Structural Concrete for any irregular shapes may be measured b y the cubic yard as determined from the theoretical yield of the design mix or in t he case of transit mixed concrete, by delivery ticket, as directed by the Resident.
structural concrete items for arriving at a lump sum price will be as follows:
1 Structural Concrete Superstructure Slabs, Structural Concret e Roadway and Sidewalk Slabs on Steel Bridges, Structural Concrete Roadway an d Sidewalk Slabs on Concrete Bridges and Structural Concrete Superstructure T-be am Type The limits will be the entire concrete superstructure, outside to o utside, both transversely and longitudinally, exclusive of concrete curbs, sidewalks, per manent concrete barrier and concrete transition barriers. 2 Structural Concrete Wearing Surfaces The limits will be the entire concrete wearing surface bounded transversely by the roadway curbs and longitudi nally by the extreme ends. 3 Structural Concrete Box Culverts The limits will be the ent ire structure, meaning the bottom floor slab, abutments, wings, superstructure floor slab and headwalls or curbs. 4 Structural Concrete, Approach Slabs The limit will be the e ntire approach slab or slabs, as shown on the Plans.
5 Structural Concrete, Abutments and Retaining Walls, Structural Concrete, Abutments and Retaining Walls (placed under water), Structural Concrete Piers, and Structural Concrete Piers (placed under water) The limits will be the entire concrete substructure unit or units, from the bottom of the footing to t he top of the unit, and outside to outside, both transversely and longitudinally, excep t for the portion to be placed under water, as indicated on the Plans, which will be th e limits of the concrete unit or units, outside to outside, transversely, longitudinally , and vertically. 6 Structural Concrete Rigid Frame Structures The limits will be the entire concrete structure, meaning the frame walls and top slab. Included with in the limits for payment, unless otherwise shown on the Plans, are bottom slab, wing walls and headwalls. 7 Structural Concrete Culvert End walls The limit will be the entire concrete end wall or end walls, as shown on the Plans. 8 Structural Concrete Curb and Sidewalks The limit will be th e entire concrete curb or sidewalk, as shown on the Plans. 9 Concrete Fill Will be measured for payment by the number of cubic yards of concrete, in place, to the vertical pay limits shown on the Pla ns. If the Contractor elects to omit forms, then any excavation or concrete placed be yond the pay limits indicated on the Plans shall not be paid for, but shall be at t he Contractor’s expense.
steel, reinforcing steel, pile heads, expansion joint material, drains, chamfers on corners, inset panels of 1 ½ inches or less in depth, pipes, weep holes and authorized openings for utilities of ¼ yd³ or less in volume, when any of these items o ccur in structural concrete which is to be paid for on a cubic yard basis.
definite elevation within rock excavation, as shown on the Plans or otherwise designated, the quantity to be measured will be the number of cubic yards o f concrete actually and satisfactorily placed above a plane at one foot below the above specified plan elevation and within the neat lines of the structure as shown on the Plans or on authorized changes in the Plans. If the ledge rock is excavated below the plane at one f oot below the plan elevation, without authorization, then this space shall be replaced with c oncrete of the same composition as required for the structure foundation but will n ot be measured for payment.
Method A or Method B, quantities of lots and sublots shall be d etermined as outlined under Section 502.1703 - Acceptance Methods A and B, and under Sectio n 502.19 - Basis of Payment.
accepted, will be measured for payment as one lump sum.
502.19Basis of Payment The accepted work done under structural concrete, of the
classes and for the types of w ork required, will be paid for at the Contract unit price per cubic yard, or at the Contract l ump sum price, for the respecti ve Contract items involved. Payment for both the unit price and the lump sum price items wi ll be full compensation for furnishing and installing bridge drains, pier nose armor, water stops, expansion joint filler, PVC or plastic tube drains, asphalt roll roofing (roofing felt) , asphalt for painting or covering various type of joints, all required sandblasting, hig h-pressure water cleaning, bonding, curing and joint sealing and all incidentals necessary to complete the work satisfactorily. No direct payment will be made for concrete ad mixtures.
No price adjustments will be made to the lump sum bid for the respective items that are bid lump sum, except when quantity changes are directed by the Department. It will be the responsibility of the Contractor to verify the estimated qu antities prior to submitting bid documents. Transverse saw cut grooving of concrete wearing surfaces will be paid for at the Contract lump sum price, which shall be payment for furnishing all materials, labor and equipment, including depth gauges and all incidentals, to satis factorily complete the work. Payment for structural concrete culvert connection shall inclu de drilling and grouting the dowels into the existing headwall and excavation. Reinforcing will be paid for under Pay Item 503.12, Reinforcing Steel, Fabricated and Delivered an d Pay Item 503.13, Reinforcing Steel, Placing. Reinforcing steel, railings, stone curbing and any material th at may be required for bridge lighting systems, will be measured and paid for separately as provided in the appropriate sections. Implementation of the QCP and costs associated with acceptance test sampling shall be incidental to related items. All costs associated with obtaining, testing and evaluating dr illed core specimens for dispute resolution will not be pa id for directly, but will be c onsidered incidental to related items. Pay adjustments will be made only for cast-in-place concrete. Pay adjustments shall be computed on the actual final quantity for unit price items. Pay adjustments shall be computed on the estimated quantity for lump sum items, except w hen precast deck panels are used, or when quantity changes are directed by the Departme nt. When precast deck panels are used, the precast deck panel quantity, as computed f rom the Working Drawings, shall be deducted from the estimated lump sum quantity to deter mine the new estimated quantity that will be used to compute pay adjustments. When De partment-directed quantity changes are made, this quantity shall be added to, or subtracte d from, the estimated lump sum quantity to determine the new estimated quantity that will be used to compute pay adjustments. When precast deck panels are used and Department- directed quantity changes