- 175 - SECTION 310 -- ROCK OR GRAVEL SURFACING
310.01 Description
1.The Contractor shall complete the following requirements under the surface course bid items:
a.Furnish, deliver, and spread aggregate for surfacing on an approved roadbed surface in accordanc e with these Specifications.
310.02 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.
310.03 Construction Methods
1.The Contractor shall deliver rock or gravel to the site specified in the contract or as directed by the Engineer.
2.The Contractor shall spread rock or gravel as shown in the contract or as directed by the Engineer.
310.04 Method of Measurement
1.Rock and gravel surfacing material will be measured by weight or volume.
a.The volume, in cubic yard (cubic meter) measurements, will be taken by load count or truck volume measurements at t he point where the material is incorporated in the road way. Unmeasured loads that are to be counted shall be filled to a predetermined volume mark on the truck bed.
b.The weight, in tons (megagrams), shall be determined on approved scales.
310.05 Basis of Payment
1.Pay Item Pay Unit Gravel Surface Course Cubic Yard (CY) [ C u b i c M e t e r ( m3)] Gravel Surface Course Ton (Tn) [Megagram (Mg)] Crushed Rock Surface Course Cubic Yard (CY) [ C u b i c M e t e r ( m 3)] Crushed Rock Surface Course Ton (Tn) [Megagram (Mg)] 2. Pay Factor: a. The Engineer shall take 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 samples shall be averaged.
c.Payment deductions shall be computed using Table 310.01 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.
310.05 Rock or Gravel Surfacing
- 176 - 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. Table 310.01 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. - 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.
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Source: Nebraska Standard Specifications for Highway Construction, 2017 Edition. Pages 209–210 of 1,048. View official source ↗