- 437 - SECTION 609 -- CONCRETE DRIVEWAYS
609.01 Description
1.The Contractor shall prepare t he subgrade, furnish all materials, and construct a concrete driveway as shown in the contract.
609.02 Material Requirements
1.The concrete Class will be specified in the contract.
2.All materials furnished by the Contractor shall conform to the requirements in Table 609.01. Table 609.01 Material Requirements Applicable Materials Section Concrete .................................................................. 1002 Preformed Join t Filler ............................................... 1015
609.03 Construction Methods
1.The subgrade shall be prepared in accordance with the requirements of Sections 302 or 303, whichever is applicable.
2.The forms shall be constructed in accordance with the requirements of Subsection 603.03.
3.a. The Contractor shall pl ace the concrete on the prepared subgrade so there will be no s egregation of the concrete.
b.The concrete shall be finished in accordance with the requirements of Subsection 603.03.
c.Concrete driveways shall be protected and cured by one of the methods described for curing concrete pavement in Subsection 603.03.
4.Surfaces of driveways shall be jointed in accordance with the details and at the locations shown in the contract.
5.Preformed joint filler shall be pl aced at locations and in accordance with the details shown in the contract. At each joint, both sides shall be edge finished while the concrete is plastic.
6.When required, integral curb s hall be constructed in accordance with the requirements of Subsection 603.03.
609.04 Method of Measurement
1.Preparation of the subgrade will be measured in accordance with Sections 302 or 303, whichever is applicable.
2.Concrete driveways will be measured for payment by the square yard (square meters).
609.05 Basis of Payment
1.P a y I t e m P a y U n i t Concrete _____ Driveway Square Yard (SY) [Square Meter (m2)]
2.Preparation of the subgrade will be paid for in accordance with Sections 302 or 303, whichever is applicable.
609.05 Concrete Driveways
- 438 - 3. If more than one thickness of driveway is shown in the contract, an appropriate designation will be added to the pay item to differentiate the thickness required.
4.a. The 28-day compressive stre ngth of each day's production will be determined from cyli nder strength tests.
b.Payment will be reduced by the amount described in Table 603.03.
c.(1) If the 28-day compressive strength fails, the Contractor has the option to take 3 core samples, at no additional cost to the Department, and under the supervision of the Engineer. The Department will take immediate custody of the cores at the time of sampling. The average compressive strength of these cores wi ll be used to determine the actual 28- day compressive strength of each day's production.
2.Cores shall be taken and tested within seven (7) days of being notified of the strength deficiency.
3.The Engineer will select the site where the cores will be taken.
5.Payment is full compensation for all work described in this Section. - 439 - SECTION 610 -- CONCRETE MEDIAN BARRIERS
610.01 Description
1.The Contractor shall furnish all materials, construct, and install cast-in-place concrete median barriers and cast-in-place concrete median barrier ends and transition sections in accordance with the details shown in the contract.
610.02 Material Requirements
1.The concrete Class will be specified in the contract.
2.All materials shall be furnished by the Contractor and shall conform to the requirements in Table 610.01. Table 610.01 Material Requirements Applicable Materials Section Concrete .................................................................... 1002 Reinforcing Steel ....................................................... 1020 Dowel Bars ................................................................ 1022
610.03 Construction Methods
1.Construction of the concrete median barrier shall conform to the applicable provisions of Sections 704 to 707.
2.a. The surface finish of the median barrier shall be a rubbed finish in accordance with Subsection 704.03 if shown in the contract.
b.Each individual section of concrete median barrier shall have a uniform color and texture.
3.All forms shall be metal except for end and transition sections.
610.04 Method of Measurement
1."Concrete _____ Median Barrier, Type _____" will be measured by the linear foot (meter). "Concrete _____ Median Barrier End Section, Type ____" and "Concrete _____ Median Barrier Transition Section, Type ______" will be measured by the each.
610.05 Basis of Payment
1.Pay Item Pay Unit Concrete _____ Median Barrier, Type _____ Linear Foot (LF) [Meter (m)] Concrete _____ Median Barrier End Each (ea) Section, Type _____ Concrete _____ Median Barrier Transition Each (ea) Section, Type _____
2.a. The 28-day compressive stre ngth of each day's production will be determined from cyli nder strength tests.
b.Payment shall be reduced by the amount described in Table 603.03.
Source: Nebraska Standard Specifications for Highway Construction, 2017 Edition. Pages 471–472 of 1,048.