- 174 - SECTION 309 -- CALCIU M CHLORIDE TREATMENT
309.01 Description
1.The Contractor shall complete the following requirements under the “Calcium Chloride Applied” bid item:
a.Furnish and spread calcium chloride for dust control on detours, haul roads, or other ar eas as shown in the contract.
309.02 Material Requirements
1.The calcium chloride shall conform to the requirements of Section 1006.
309.03 Construction Methods
1.The Contractor shall apply calcium chloride at the locations described in the contract.
2.The calcium chloride may be applied dry or dissolved in water.
3.The initial application of calciu m chloride shall be at a rate of 2 lb/SY (1 kg/m2).
4.Additional calcium chloride shall be applied as needed. The additional applications shall be at the rate and at the time directed by the Engineer.
5.The Contractor shall distribute each application in such a manner and by such devices that uniform coverage is attained.
309.04 Method of Measurement
1.Calcium chloride is generally available in grades of varying purity. Calcium chloride will be measured by the ton (megagram) and converted to equivalent mass based on the analyses furnished.
2.The weight, in tons (megagrams), will be determined on approved scales.
309.05 Basis of Payment
1.Pay Item Pay Unit Calcium Chloride Applied Ton (Tn) [Megagram (Mg)]
2.Payment will be made for the ac tual amount of pure calcium chloride applied.
3.Water applied at the direction of the Engineer will be paid for as “Extra Work”.
4.Payment is full compensation for all work described in this Section. - 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.
Source: Nebraska Standard Specifications for Highway Construction, 2017 Edition. Pages 208–208 of 1,048.