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CITY OF EVERETT SPECIAL PROVISIONS <br /> <br /> <br /> <br /> <br /> Division 5 <br />Everett Mall Bus Platform Surface Treatments and Pavements December 2024 <br />WO No – MALLSTN/24462 SP-120 <br />5-04.3(3) Equipment <br />5-04.3(3)A Mixing Plant <br />Provide plants used for the preparation of HMA conforming to the following <br />requirements: <br />1. Equipment for Preparation of Asphalt Binder – Equip tanks for the storage <br />of asphalt binder to heat and hold the material at the required temperatures. <br />Accomplish the heating by steam coils, electricity, or other approved means <br />so that no flame is in contact with the storage tank. Provide the circulating <br />system for the asphalt binder designed to ensure proper and continuous <br />circulation during the operating period. Provide a valve for the purpose of <br />sampling the asphalt binder placed in either the storage tank or in the supply <br />line to the mixer. <br />2. Thermometric Equipment – Provide an armored thermometer, capable of <br />detecting temperature ranges expected in the HMA mix, fixed in the asphalt <br />binder feed line at a location near the charging valve at the mixer unit and <br />location convenient and safe for access by Inspectors. Provide plant <br />equipped with an approved dial-scale thermometer, a mercury actuated <br />thermometer, an electric pyrometer, or another approved thermometric <br />instrument placed at the discharge chute of the drier to automatically register <br />or iQGLFDWHWKHWHPSHUDWXUHRIWKHKHDWHGDJJUHJDWHV3URYLGHௗGHYLFHLQIXOO <br />view of the plant operator. <br />3. Heating of Asphalt Binder – Provide heating so the temperature of the <br />asphalt binder does not exceed the maximum recommended by the asphalt <br />binder manufacturer nor be below the minimum temperature required to <br />maintain the asphalt binder in a homogeneous state. Provide method to heat <br />the asphalt binder in a manner that will avoid local variations in heating and <br />provide a continuous supply of asphalt binder to the mixer at a uniform <br />average temperature with no individual variations exceeding 25°F. Also, <br />when a WMA additive is included in the asphalt binder, the temperature of the <br />asphalt binder shall not exceed the maximum recommended by the <br />manufacturer of the WMA additive. <br />4. Sampling and Testing of Mineral Materials – Provide HMA plant equipped <br />with a mechanical sampler for the sampling of the mineral materials meeting <br />the requirements of Section 1-05.6 for the crushing and screening operation. <br />Provide for the setup and operation of the field testing facilities of the City as <br />provided for in Section 3-01.2(2). <br />5. Sampling HMA – Provide for sampling HMA by one of the following <br />methods: <br />a. A mechanical sampling device attached to the HMA plant. <br />b. Platforms or devices to enable sampling from the hauling vehicle without <br />entering the hauling vehicle. <br />5-04.3(3)B Hauling Equipment <br />Provide trucks used for hauling HMA having tight, clean, smooth metal beds and a <br />cover of canvas or other suitable material of sufficient size to protect the mixture from <br />adverse weather. Securely attach cover whenever the weather conditions during the <br />work shift include, or are forecast to include, precipitation or an air temperature less