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i 120-9 Acceptance Program. 120-9.1 Density over 105%: When a computed dry density results in a value greater than 105%of the applicable Proctor maximum dry density,the Engineer will perform a second j density test within 5 feet. If the second density results in a value greater than 105%, investigate the compaction methods, examine the applicable Maximum Density and material description. If necessary, the Engineer will test an additional sample for acceptance in accordance with AASHTO T 99, Method C. 120-9.2 Maximum Density Determination:The Engineer will determine the maximum density and optimum moisture content-by sampling and testing the material in accordance with the specified test method listed in 120-9.3. i 120-9.3 Density Testing Requirements: Compliance with the requirements of 120-9.5 will be determined in accordance FM 1-T 238. The in-place moisture content will be determined for each density in accordance with FM 5-507(Determination of Moisture Content by Means of a Calcium Carbide Gas Pressure Moisture Tester), or ASTM D 4643 (Laboratory Determination of Moisture Content of Granular Soils By Use of a Microwave Oven). 120-9.4 Soil Classification: The Engineer will perform soil classification tests in accordance with AASHTO T-88, and classify soils in accordance with AASHTO M-145 (Standard Specification for Classification of Soils and Soil-Aggregate Mixtures for Highway Construction Purposes) in order to determine compliance with embankment utilization J requirements. i 120-9.5 Acceptance Criteria- The Engineer will accept a minimum density in accordance with 120-7.2 with the following exceptions: 1) embankment constructed by the hydraulic method as specified in 120-6.3; 2) material placed outside the standard minimum slope as specified in 120- q 6.2.4; 3) other areas specifically excluded herein. 120-9.6 Frequency: The Engineer will conduct sampling and testing at a minimum frequency listed in the table below. Test Name Frequency Maximum Density One per soil type Density 1 per 500' RDWY Alt Lift Soil Classification One per Maximum Density 120-10 Maintenance and Protection of Work. j While construction is in progress, maintain adequate drainage for the roadbed at all times. Maintain a shoulder at least 3 feet wide adjacent to all pavement or base construction in order to provide support for the edges. Maintain and protect all earthwork construction throughout the life of the Contract, and take all reasonable precautions to prevent loss of material from the roadway due to the action of wind or water. Repair any slides, washouts, settlement, subsidence, or other mishap which may occur prior to final acceptance of the work. Maintain all channels excavated as a part of the Contract work against natural shoaling or other encroachments to the lines, grades, and cross-sections shown in the plans, until final acceptance of the project. 01025-32 Technical Specifications FAPublic Works\ENGINEERING DIVISION PROJECTS\1123 43rd Ave Sidewalk Improvements 26th St.to Airport Dr West Admim\bid documentsWtaster Contract Documents\Technical Specifications.doc