- 179 - SECTION 312 -- REMOVAL AND PROCESSING OF CONCRETE PAVEMENT
312.01 Description
1.The Contractor shall complete the following requirements under the “Remove Concrete Pavement” bid item:
a.Breaking, removing, hauling, and stockpiling Portland cement concrete pavement.
312.02 Material Requirements
1.The Portland cement concrete sh all be broken into pieces having a maximum dimension of 4 feet.
2.Care shall be taken during the removal, crushing, and screening operations to avoid the inclusion of di rt or other deleterious matter in the crushed product.
312.03 Construction Methods
1.The pavement to be broken and removed will be shown in the contract.
2.Joint Material Removal: a. Before removing concrete pavement, the Contractor shall remove the preformed cellular flexible polyurethane and all other joint materials from all joints in all sections of the project.
b.The Contractor shall dispose of all joint materials in accordance with all applicable laws and regulations.
3.All reinforcing steel and wire mesh that is dislodged during the removal operation shall be collected and become the property of the Contractor.
4.The Contractor shall stockpile the broken concrete at the site shown in the contract. It will be shown in the contract if Department property is used for a crushing and stockpiling site. If Department property is used, the Contractor shall clean up and remove from the area all debris, reinforcing steel, and scattered pieces of concrete remaining from the operations; and the work area shall be left in a neat and presentable condition.
312.04 Method of Measurement
1."Remove Concrete Pavement" will be measured by the square yard (square meter) of pavement prior to it being broken and removed.
312.05 Basis of Payment
1.Pay Item Pay Unit Remove Concrete Pavement Square Yard (SY) [Square Meter (m 2)]
2.Deductions from the paym ent quantity will be made for any equivalent area that is not broken to the required size. The Engineer will determine the equivalent area.
3.Payment is full compensation for all work described in this Section. - 180 - SECTION 313 -- CRUSHED ROCK EMBEDMENT
313.01 Description
1.The work shall consist of spreading, scarifying, blending and compacting and top dressing a layer of crushed rock into the subgrade as shown in the contract.
313.02 Material Requirements
1.Crushed rock for embedment shal l conform to the requirements of Table 1033.07.
2.Crushed rock for embedment shall have a less than a 40% loss at the end of 16 cycles of the freeze thaw test.
3.The Contractor may substitute crushed concrete for the crushed rock. Crushed concrete shall conform to the gradation requirements of Crushed Concrete Foundation Course.
313.03 Construction Methods
1.The Contractor shall deliver a nd spread the rock in a uniform layer to the site specified in the contract or as directed by the Engineer.
2.Water shall be added as necessary to facilitate compaction. 3. After the Crushed Rock Embedment is completed, the Contractor shall place and spread 1 inch of Crushed Rock Surface Course on the roadway. Additional Crushed Rock Surface Course shall be placed and spread during the life of the project as directed by the Engineer.
313.04 Method of Measurement
1.Crushed Rock Embedment will be measured by the Square Yard (Square Meter) of completed and accepted work.
2.Crushed rock used for Crushed Rock Embedment and Crushed Rock Surface Course will be m easured by the Ton (Megagram).
3.Water will be measured by the Mgallon (kL) applied. Excess or wasted water will be estimated by t he Engineer and deducted from the volume applied.
313.05 Basis of Payment
1.Pay Item Pay Unit Crushed Rock Embedment Square Yard (SY) [Square Meter (m 2)] Crushed Rock Surface Course Ton (Tn) [Megagram (Mg)] Water 1,000 Gallons (MGAL) [ k i l o l i t e r ( k L ) ]
2.Crushed rock will be paid for in accordance with Section 310 of the Standard Specifications
3.Payment is full compensation for all work described in this Section.
Source: Nebraska Standard Specifications for Highway Construction, 2017 Edition. Pages 213–213 of 1,048.