- 177 - SECTION 311 -- FURNISH ROCK OR GRAVEL
311.01 Description
1.The Contractor shall complete the following requirements under the Furnish Gravel or Furnish Crushed Rock bid items:
a.Furnish and deliver the rock or gravel. The point of delivery is shown in the contract or will be indicated by the Engineer.
311.02 Material Requirements
1.Crushed rock and gravel sha ll conform to the requirements of Subsection 1033.02, Paragraphs 1., 2., and 6.
2.Gravel shall conform to t he requirements in Table 1033.06.
3.Crushed rock shall conform to the requirements in Table 1033.07.
311.03 Construction Methods
1.The Contractor shall deliver t he rock or gravel to the locations shown in the contract.
311.04 Method of Measurement
1.Rock and gravel surfacing material will be measured by weight or volume.
2.Volume, in cubic yard (cubic meter) measurements, will be taken by load count or truck volume measurement s at the point where the material is delivered. Unmeasured loads that are to be counted shall be filled to a predetermined volume mark on the truck bed.
3.The weight, in tons (megagrams), shall be determined on approved scales.
311.05 Basis of Payment
1.Pay Item Pay Unit Furnish Gravel Cubic Yard (CY) [Cubic Meter (m3)] Furnish Gravel Ton (Tn) [Megagram (Mg)] Furnish Crushed Rock Cubic Yard (CY) [ C u b i c M e t e r ( m3)] Furnish Crushed Rock Ton (Tn) [Megagram (Mg)] 2. Pay Factor:
a.The Engineer shall take five random samples of rock or gravel in accordance with the Materials Sampling Guide.
b.For Gravel and Crushed Ro ck, the percentage passing the No. 10 (2 mm) sieve for the five samples shall be averaged.
c.Payment deductions shall be computed using Table 311.01 and the averaged value of the percent passing the No. 10 (2 mm) sieve.
d.If the material is less than a full lot but more than 400 cubic yards (300 m
3.or 540 tons (490 Mg), then one sample for every 200 cubic yards (150 m3) or 270 tons (245 Mg) shall be taken and averaged.
e.If the material is less than 400 cubic yards (300 m3) or 540 tons (490 Mg), then 2 samples will be taken and averaged.
311.05 Furnish Rock or Gravel
- 178 - Table 311.01 Gravel and Crushed Rock Surfacing Deductions Total Average Percent Passing the No. 10 (2 mm) Sieve Min. Max. Percent Deduction 0 30 0 31 35 10 36 40 25 41 45 50 46 100 Reject
3.Payment is full compensation for all work described in this Section. - 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.
Source: Nebraska Standard Specifications for Highway Construction, 2017 Edition. Pages 211–212 of 1,048.