Item 18 - Traffic Signal Installation at Segerstrom Avenue and Rosewood Avenue

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CITY OF SANTA ANA SPECIFICATIONS PROJECT NO.: 25-6030 TRAFFIC SIGNAL INSTALLATION AT SEGERSTROM AVENUE AND ROSEWOOD AVENUE All striping and related roadside signage shall be in place prior to opening the lane(s) to public traffic. E. THERMOPLASTIC Thermoplastic traffic stripes, pavement markings, crosswalks and limit lines shall conform to the provisions in Sections 84-1, "General," and 84-2, "Thermoplastic Traffic Stripes and Pavement Markings," of the Caltrans Standard Specifications and these special provisions. Specifications for glass beads shall be "8010-004 (Type II)." Glass beads shall be premixed within the thermoplastic material prior to application and also applied to the surface of the molten thermoplastic striping material immediately following the application of the thermoplastic. Thermoplastic material shall conform to the requirements of Caltrans Specification No. PTH-02ALKYD, for Thermoplastic Traffic Striping Material, White and Yellow. The binder material shall be Alkyd. Copies of the Caltrans Specification No. PTH- 02ALKYD are available at the Caltrans Transportation Laboratory, Sacramento, California. Thermoplastic material shall conform to the requirements of Caltrans Specification No. PTH-02ALKYD. Thermoplastic material for traffic stripes shall be applied by extrusion method in single uniform layer at the minimum thickness of 40 mils and not to exceed 50 mils. The Contractor shall not begin work until a written notice to proceed has been issued by the Engineer. The Contractor shall notify the City of Santa Ana - Public Works Agency Engineer a minimum of two working days prior to beginning the work to coordinate the work. A schedule of the streets to be re -striped for each day shall be provided to the Engineer one full workday prior to striping or re -striping any streets. The Contractor shall adjust the thermoplastic application rate as necessary to achieve the thermoplastic application rate stated above prior to striping. Thermoplastic application rate tests (up to and including 5 thermoplastic application rate tests per day, including the thermoplastic application rate test at the start of each workday) may be conducted at random times and locations throughout each workday at the discretion of the Engineer. Thermoplastic Application Rate Testing The paint application rate shall be determined by passing the striper over a metal plate while the paint application system is operating. The flow of glass beads shall be stopped while passing over the metal plate. The Engineer shall measure thickness of the applied thermoplastic immediately after application of thermoplastic on the metal plate. Striping shall not continue if the proper thickness of thermoplastic is not being applied. Adjustments and corrective measures shall be applied to insure that the correct thickness of thermoplastic will be applied.