SCOPE
725.01.01 Material Covered. This specification covers the materials, manufacture, and testing of plain
elastomeric bearings and steel laminated elastomeric bearings. REQUIREMENTS
725.02.01 Certificate of Inspection. Elastomeric bearing pad materials and completed bearings shall be
tested by the manufacturer or an approved independent testing laboratory, who shall certify that the constituent materials and completed bearings meet these specifications and requirements. The certification shall include a certified copy of the test results on samples of the elastomer and laminated materials to be used in the pads. Furnish material and bearing testing certifications prior to installing the bearings. PHYSICAL PRO PERTIES AND TESTS
725.03.01 General. Elastomeric bearing pads shall conform to AASHTO M251 except modified as follows or as
otherwise indicated on the plans:
1.Elastomer shall be 100% virgin crystallization resistant polychloroprene (neoprene).
2.Elastomer shall be Grade 3 with a durometer hardness of 55 ± 5.
3.Steel laminates shall conform to ASTM A1011M Grade 250 (A1011 Grade 36).
4.The alternate test and acceptance criteria referenced in Section 3.5 of AASHTO M251 are not permitted.
5.The maximum design dead load plus live service compressive load is 6900 kPa (1000 psi) unless shown otherwise on the plans.
6.The compressive strain at the maximum design dead load plus live service compressive load shall not exceed 0.10.
7.The optional AA SHTO M251 test procedures shall apply if the plans indicate the bearing was designed based on AASHTO Method B. SECTION 726 ROADSIDE MATERIALS SCOPE
726.01.01 Materials Covered. This specification covers the materials used in erosion control, landscaping, and
irrigation systems. REQUIREMENTS
726.02.01 Certificates and Samples. (a) Topsoil. Obtain from the County Weed Control Agency or the State
Quarantine Officer a written certification that the area from which the topsoil is to be obtained is free from noxious weeds. Topsoil that has been treated with herbicides or sterilants shall be tested by the State D epartment of Agriculture to determine the residuals in the soil. Before imported topsoil is brought on the jobsite, furnish a current report from a recognized testing laboratory indicating the particle size, clay content, the pH factor, and electrical conductivity of the sample.
b.Fertilizer. Provide fertilizer containers with the manufacturer’s guaranteed statement of analysis clearly marked, all conforming to State and F ederal laws. The State Department of Agriculture shall sample the fertilizer befor e use on the project.
c.Compost. Before bulk compost is brought to the jobsite, samples shall have been tested for the specified microbiological and nutrient conditions, including maturity and stability, by a testing laboratory approved for testing of organic materials. Such testing shall have been performed within six months of time the humus is to be furnished to the project. Submit test results for approval.
d.Plants. Plants shall comply with Federal and State laws requiring inspection for plant di seases and infestations. Furnish inspection certificates required by law with each shipment of plants. Furnish certificates for USDA Quarantine No. 63 for White Pine blister rust, and Nevada Quarantine No. 54.05 for European Pine shoot moth with shipments of pines.
e.Seeds. Furnish duplicate copies of a statement signed by the vendor certifying that each lot of seed has been tested by a recognized seed testing laboratory within 6 months before the date of seeding on the project. Submit original laborator y seed tests by lot number a minimum of 30 days before application. Seed tags shall reflect the most recent test date and shall be submitted for approval. All seed is subject to inspection. The State Division of Agriculture shall randomly sample and test s eed before use on the project. Furnish a copy of the State Division of Agriculture’s approval letter.
f.Irrigation Materials. Ascertain that all required tests have been made by approved qualified testing laboratories. Furnish a written certification that all required tests have been satisfactorily completed and that materials and fabrication thereof comply with all the requirements. Receive approval of material before use.
g.Soil Inoculants. Provide 28 gram samples with package labels 30 days prior to application for verification of species and live propogules. Obtain a composite sample from the top, middle, and bottom of the bag and/or micro -bag samples per case. Submit s amples to a soils laboratory capable of testing these samples using the mean Infection Percentage (MIP) assay test method. Submit lab test results for approval.
h.Herbicides. Provide herbicide certificates with the manufacturer’s guaranteed statement of analysis clearly marked, all conforming to S tate and F ederal laws, including pre- emergent herbicides. Herbicides shall not contain soil sterilants.
i.Mulch. Provide mulch certification with the manufacturer’s guaranteed statement of analysis clearly marked, all conforming to S tate and F ederal laws.
j.Tackifier. Provide tackifier certification with the manufacturer’s guaranteed statement of analysis clearly marked, all conforming to State and F ederal laws . The standard swell volume shall be considered as 30 milliliters per gram. Material shall have a swell volume of at least 24 milliliters per gram.
k.Woven Fabric (Weed Barrier). Provide manufacturer’s certification that all materials and fabrication thereof comply with all the requirements. Receive approval of material before use.
Source: Nevada Standard Specifications for Road and Bridge Construction, 2014 Edition. Pages 579–580 of 610.