501.22METHOD OF MEASUREMENT :

501.21.2 Hot Weather Concreting: The Contractor will be required to state, at the pre -

construction conference, their pl an of action when the temperature of plastic concrete reaches 90F. When a shaded thermometer in the vicinity of the production plant reaches 85 F, thermometer readings of the temperature of the plastic concrete shall be taken at least once per hour. When the temperature of the plastic concrete reaches 85 F, the elapsed time between the introduction of the mixing water to the cement -aggregates and discharge of the mix shall not exceed 45 minutes. At this temperature or above, particular attent ion shall be paid to the Specification provisions concerning the sprinkling and wetting of subgrade and forms, the maintenance of coarse aggregate stock in saturated surface -dry condition, and the prompt start of concrete curing operations. When the temp erature of the plastic concrete reaches 90 F, immediate steps shall be taken to cool either mixing water or aggregates, or both, in order to maintain a plastic concrete temperature of 90 F, or less. Crushed or flaked ice may be used to cool the mixing wate r. Crushed or flaked ice may also be introduced into the mixing drum when the concrete is batched and mixed in a truck mixer. The ice will be considered as part of the mix water in the mix proportions. The mixing operation shall not be considered comple te until all ice in the drum has melted. In no event shall concrete be placed when its temperature in the plastic state, at the completion of mixing, exceeds 90 F.

501.22 Method of Measurement :

The quantity of concrete pavement to be paid for will be the number of square yards complete in place and accepted. The width for measurement will be the width of the pavement shown on t he typical cross section of the Plans and additional widening where called for or as otherwise directed in writing by the Engineer. The length will be measured on the surface along the centerline of each roadway ramp. When Item 501009 -* is specified in t he project plans, the quantity of concrete overlay placement to be paid for will be the number of square yards complete in place and accepted. The width for measurement will be the width of the pavement or overlay shown on the typical cross section of the Plans and additional widening where called for or as otherwise directed in writing by the Engineer. The length will be measured on the surface along the centerline of each roadway and each roadway ramp. 257 When Item 501011 -* is specified in the project plans the quantity of concrete used in concrete overlays to be paid for will be the number of cubic yards in place and accepted. The Engineer will measure the volume of concrete used in concrete overlays using the Contractor’s certified batch tickets or other approved documentation. Bridge approach expansion joints will be measured separately and shall be the actual number of joints constructed, complete in place and accepted. In contracts where only widening is called for, the square yards of pavement widening will be determined from the length of strips, measured along the edges and upon the surface, times the width as measured at regular intervals, plus the area of any widening on curves, turnouts or intersections authorized and measured separately. No extra payment will be made for removing and crushing the existing pavement for use as coarse aggregate for concrete. No additional measurement is necessary nor will addition compensation be allowed for the placement of Safety Edge.

501.23 Basis of Payment :

501.23.1 General: The quantities, determined as provided above, will be paid for at the

contract unit prices less adjustments referred to below, which shall constitute full compe nsation for furnishing and preparing of all materials, including reinforcing steel, transverse and longitudinal joints, expansion joint filler, elastomeric joint seals, silicone sealant, epoxy mortar for joint repair work, polyethylene tape, rope or rod jo int back -up material, lubricant -adhesive for elastomeric seals, and dowels or load transfer devices as are required in the Plans; construction of any bond breaker/leveling course, milling existing surface; placing, finishing and curing concrete; and all la bor, equipment, tools, field laboratory, supplies and incidentals necessary to complete the work.

501.23.1 1-The measurements which represent the thickness of the sampling units shall

be analyzed to determine the average value of the pavement thickness. This value will be used to determine the degree of compliance with the provisions set forth in subsection

501.19 and to develop certain factors to be used in the derivation of equitable deductions

as set forth in subsection s 501.23.1.2 and 501.23.1.3, in the event the provisions of this Specification are not met. No payment will be made for pavement areas that ar e 0.922T or less in thickness, the area being defined in the manner set forth in subsection 501.19.2. Any area of pavement which is deficient in thickness by more than 0.7 inches and is considered by the Engineer to be inadequate to perform satisfactorily shall be removed and replaced at no added cost to the Division. The balance of the item, the portion of the item not treated in the manner set forth above, will be treated in the manner set forth in subsections 501.23.1.2 or

501.23.1 3.

501.23.1 2-When the average value of the pavement thickness is equal to or greater

than the specified thickness, the quantity of pavement represented by this average thickness will be paid at the contract unit price.

501.23.1 3 -When the average value of the pavement thickness is less than the specified

thickness, the fraction of pavement having a thickness greater than 0.922T will be paid for at a unit price as set forth in the following schedule, and no payment will be made for the remainder of the pavem ent being considered.