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HomeMy WebLinkAbout1737-2i r SPECIAL PROVISIONS STATE ROUTE 66 (FOOTHILL ROAD) AND SIERRA AVENUE NOVEMBER, 1988 SECTION 1 TRAFFIC SIGNALS AMID LIGHTING I. DESCRIPTION. --Modifying traffic signal and highway lighting systems shall conform to the provisions in the Standard Specifications and these special provisions. Standard Specifications refer to the Standard Specifications of the State of California, Department of Transportation, dated January, 1988. 4 Traffic signal and highway lighting work is to be performed at the following locations: STATE ROUTE 66 (FOOINILL BOULEVARD) AND SIrRRA AVENUE In general, the work consists of modifying the existing signal and lighting system :)y relocating the signal controller and one existing signal standard, and installing a new signal standard, and such other work as is required to accommodate the widening of Foothill Boulevard at the intersection. 2. MAINTAINING EXISTING AND TEMPORARY ELECTRICAL SYSTEMS. --Existing traffic signals and street lights shall be maintained during the construction of traffic signal modifications. Traffic signal system shutdowns or flashing "All Red" operations shall be limited to periods between the hours of 9:00 A.M. and 3:00 P.M., and shall be approved by the Engineer. The contractor shall place "Stop Ahead" and "Stop" signs to direct vehicle and pedestrian traffic through the intersection during traffic signal system shutdown. Temporary "Stop Ahead" and "Stop" signs shall be either covered or removed when the system is operational. "Stop Ahead" and "Stop" signs shall be furnished by the Contractor and shall conform to the provisions in Section 12-3.06, "Construction Area Signs," of the Standard Specifications except that the base material for the signs shall not be plywt )od . One "Stop Ahe-id" sign and one "Stop" sign shall be placed for each direction of traffic. For two-lane approaches, two "Stop" signs shall be placed. Location of the signs shall be as directed by the Engineer. Full compensation for furnishing, installing, maintaining and removing temporary "Stop Ahead" and "Stop" signs and for covering signs not in use shall be considered as included in the contract lump sum .;-ice paid for signal and lighting work, and no additional compensation shall be allowed therefor. If necessary, temporary overhead wiring shall be installed to existing traffic signal and lighting systems to maintain these systems in opera*ion for periods other than the shutdown time specified above. Full compensation for furnishing, installing, maintaining and removing temporary overhead wiring shall be considered as included in the contract lump sum price paid for the signal item involved, and no additional compensation shall be allowed therefor. 3. EXISTING UTILITIES AND IMPROVEMENTS. --The approximate locations of major sub -surface utilities are shown on the plans. The Contractor shall verify the location of all utilities. Other utilities not shown on the drawings may be encountered during the course of the work and due allowance shall be made for such construction difficulties. The Contractor is advised to inspect the work area prior to bidding so that he is aware of the location and layout of existing site features and satisfies himself that he can execute the work as shown in the contract plans and specifications. Attention is directed to Sections 8-1.10, "Utility and Non -Highway Facilities," and 15, "Existing Highway Facilities," of the Standard Specifications and these special provisions. The Contractor shall contact the Underground Service Alert (U.S.A.) by telephone (1-800-422-4133) not less than two working days prior to performing any excavation, and shall provide the Engineer with the assigned U.S.A. number in writing prior to commencing construction. 4. TRAFFIC CONTROL AND ACCESS. --Construction signing and traffic control shall conform to the "Manual of Traffic Controls for Construction and Maintenance Work Zones," dated 1985 (or subsequent issue), issued by the State of California, Department of Transportation. Where construction necessitates closure of lanes on multilane highways, not more than one lane shall be closed in each direction at one time. Signing for lane closures shall conform to State Standard Plan No. -T-11, T-12 and T-13. Lane closures shall not occur before 9:00 AM, and shall be removed prior to 4:00 P.M. each working day, unless otherwise approved in writing by the Engineer. 5. FOUNDATIONS. --Portland cement concrete shall conform to Section 90-10, "Minor Concrete," of the Standard Specifications and shall contain not less than 470 pounds of cement per cubic yard, except concrete for reinforced pile foundations or spread footings constructed in lieu of standard foundations shall contain not less than 564 pounds of cement per cubic yard. Where there is insufficient cover above existing underground utilities to construct standard foundations as shown on the Standard Plans, and when directed by the Engineer, the Contractor shall design and construct suitable reinforced spread footings in lieu thereof. The design of such footings shall be prepared by a Civil Engineer licensed to practice in the State of California, and shall be approved by the Engineer prior to construction. The design of such footings shall be classed as extra work. Where equipment is shown to be located at the right-of-way line, the edge of the foundation shall be coincident with the right-of-way line, and no part of the foundation shall be located outside the right-of-way. - The top surface of controller cabinet and service pedestal foundations shall be finished level, so that equipment mounted thereon will be plumb and level without the use of shims. The exact location of all foundations for signal equipment, controller and service enclosures shall be approved by the Engineer prior to the start of any excavation work. Where foundations are constructed for existing equipment to be relocated, the Contractor shall verify the anchor bolt layout of existing equipment prior to construction of new foundations. Modification of existing equipment to adapt to improperly set anchor bolts will not be permitted. 13113, V, ' %9' 6. STANDARDS, STEEL PEDESTALS AND POSTS. --Where the plans refer to the side tenon detail at the end of the signal mast arm, the applicable tip tenon detail may be substituted. Painting of equipment numbers on signal and lighting standards will not be required. In addition to the dimensional requirements contained in the Standard Plans, the maximum elevation of the bottom of any mast -arm mounted signal housing shall not exceed 19 feet above the elevation of the roadway at centerline. No portion of signal or luminaire mast arrtis shall slope downward towards the tip of the mast arm, when all equipment has been mounted. Where existing signal equipment is shown to be removed and relocated or salvaged, such work shall conform to the provisions of Section 21, "Removing, Reinstalling, or Salvaging Electrical Equipment," of these special provisions. The new mast arm type traffic signal standard at Location D is sized as shown on the plans to accept a future longer mast arm for left turn phasing. Mast arm connections' shall be fabricated to accept future mast arms. The shorter arms shown to be supplied under this contract shall mate with the connections sized for future mast arms, .so that no structural change to the standard will be required. 7. CONDUIT. --When a standard coupling cannot be used for coupling metal type conduit, a UL listed threaded union coupling, as specified in the third paragraph in Section 86-2.050, "Installation," of the Standard Specifications, or a concrete -tight split coupling or concrete -tight set screw coupling shall be used. Conduit shall be rigid metal type. Insulated bonding bushings will be required on metal conduit. All conduit placed under existing pavement or sidewalk shall be installed by drilling or jacking as provided in Section 86-2.05C, "Installation," of the Standard Specifications. Conduit may be installed by trenching in unpaved areas or areas where existing sidewalk is to be replaced with new sidewalk as shown on the plans or required by the Standard Specifications. 8. PULL BOXES. --Plastic pull boxes or pull box covers shall not be used. Recesses for suspension of ballasts will not be required. Grout in the bottom of traffic signal pull boxes shall be provided in accordance with the provisions of Section 86-2.06C, "Installation and Use," of the Standard Specifications. Where the sump of an existing pull box is disturbed by the Contractor's operations, the sump shall be reconstructed. Old grout, if any, shall be removed and new grout placed. 9. CONDUCTORS AND WIRING. --Splices shall be insulated by "Method B". 10. BONDING AND SING. --The Contractor shall verify that the existing traffic signal system, after modification, is properly bonded and grounded in accordance with the provisions of Section 86-2.10, "Bonding and Grounding," of the Standard Specifications. 11. SERVICE. --The existing Type A service on the north-west corner of the intersection shall remain in place and be reused. 12. TESTING. --In addition to the tests specified in Section 86-2.148, "Field Testing," of the Standard Specifications, a Phase Load Test conforming to the following shall be performed: Each branch vehicular or pedestrian signal conductor and luminaire conductor terminating in the controller cabinet shall have operating voltage applied after all lamps have been installed. Not less than 4 observers shall verify simultaneously that all intended lamps (and only those lamps) function during such test. The current load drawn by the circuit during the test shall not exceed that calculated for the circuit involved by more than 10 percent, as measured by clamp -on type ammeter as approved by the Engineer. 13. PAINTING. --The Contractor shall repaint existing painted traffic signal equipment which is to be relocated and reused, in accordance with the provisions of Section 86-2.16, "Painting," of the Standard Specifications. 14. M DDEL 170 CONTROLLER ASSEMBLIES. --The existing Model 170 controller assembly shall be relocated and be reused. The Contractor shall construct the controller cabinet foundation, (including fu---mishing and installing anchor bolts), shall install the controller cabinet on said foundation, and shall make all field wiring connections to the terminal blocks in the controller cabinet. The Contractor shall notify the Engineer not less than 7 working days in advance of the date on which he desires to relocate the existing controller. 15. VEHICLE SIGNAL FACES AND SIGNAL HEADS . --The fifth sub -paragraph of the second paragraph of Section 86-4.01B "Housing," of the Standard Specifications, is amended to read: All gaskets, including those for the mounting hardware, door, lens, reflector, and lampholder, sh�ll be made of a neoprene -type material that is not affected when install in a signal section with a metal housing that is operated continuously with lamps specified herein for 336 hours. Cork gaskets shall not be used. Signal section housings and visors shall be metal. All vehicle signals shall have metal backplates. Screws shall be placed in all backplate mounting screw holes in vehicle signal heads. All existing vehicle traffic signal faces to be relocated and reused shall be cleaned and relamped after relocation, in accordance with the provisions of Section 86-7.02, "Reinstalling Removed Electrical Equipment," of the Standard Specifications. Where existing signal faces are shown to be removed and salvaged, the mounting hardware shall be modified to eliminate the portion serving the signal face to be removed, and the remaining mounting hardware shall be reconstructed to be weather -tight. All lamps for traffic signal units shall be furnished by the Contractor. 16. PEDESTRIAN SIGNALS. --Pedestrian signals shall be Type A. Pedestrian signal faces shall conform to the following: The luminance of the UPRAISED HAND symbol shall be 1,100 foot -lamberts, minimum, and the luminance of the WALKING PERSON symbol shall be 1,550 foot -lamberts, minimum. The uniformity ratio of an illuminated symbol shall not exceed 4 to 1 between the highest luminance area and the lowest luminance area. The luminance difference between a non -illuminated symbol and the background around the symbol shall be less than 30 percent when viewed with the visor and front screen in place and at a low sun angle. Brightness measurements for signals designed for an incandescent lamp will be made when the signal is equipped with an A-21 traffic signal lamp operated at a voltage to produce 665 lumens. All existing pedestrian signal faces to be relocated shall be cleaned and relamped after relocation, in accordance with the provisions of Section 86- 7.02, "Reinstalling Removed Electrical Equipment," of the Standard Specifications. All lamps for pedestrian signal units shall be furnished by the Contractor. 17. DETECMRS.--Existing Loop detector sensor units, and inductive detector loops,• shall be reused. Existing loop detector lead-in conductors shall be spliced to new detector lead-in cable at locations shown on the plan, and the neck cables shall be extended to the new controller location by the Contractor, as shown on the plans. Loop detector lead-in cable (DLC) shall be Type B. 18. PELESTRIAN PUSH BUTTONS. --Pedestrian push button housings shall be Type B, metal type. Pedestrian push button signs shall be porcelain enameled metal. 19. LUMINAIRES. --Luminaires shall be high pressure sodium vapor cutoff type, 120 -volt, of the wattages shown on the plans. All luminaires, when tested in accordance with California Test 611, shall be capable of withstanding cyclic loading in: (1) a vertical plane at a minimum peak acceleration level of 3.0 g's peak -to -peak sinusoidal loading (same as 1.5 g's peak) with the internal ballast removed, for a m ini m of 2 million cycles without failure of any luminaire parts, and (2) a horizontal plane perpendicular to the direction of the mast arm at a minimum peak acceleration level of 1.5 g's peak -to -peak sinusoidal loading (same as 0.75-g peak) with the internal ballast installed, for a minimum of 2 million cycles without failure of any luminaire parts. No part of the slipfitter mounting brackets on the luminaires shall develop a permanent set in excess of 0.020 -inch when the four 3/8 inch diameter cap screws used for mounting are tightened to a torque of 10 foot- pounds. oot- po ids. 20. PHO'I`OELECTRIC CONTROL. --The existing photoelectric control system shall be reused in place. 21. RE 10VING, REINSTALLING OR SALVAGING EL.ECTRI CAL EQUIPMENT . - -At each location where existing traffic signal equipment is shown to be removed or relocated, such activity shall be scheduled in advance with the Engineer, and where such activity requires that the traffic signal system be removed f rctn operation, shall be accomplished within the traffic signal shutdown limitations specified in Section 2, "Maintaining Existing and Temporary Electrical Systems," of these special provisions. Where existing traffic signal equipment is to be removed and salvaged, it shall be carefully removed and delivered to the State Maintenance Facility, at 247 West Third Street, San Bernardino, CA, 90402. No equipment removed shall be allowed to remain at the job site during non -working hours. Full compensation for removing and salvaging existing traffic signal equipment shall be considered,as included in the contract lump sum prices for Modification of Traffic Signals at Locations 1, and no additional ccmpensation will be allowed therefor. 22. PAYMENT. --The contract lump sum prices paid for signal and lighting work, as specified in Section 86.-8.01, "Payment", of the Standard Specifications and these special provisions, shall include construction of cast -in -drilled -hole (CIDH) pile foundations for signal standards, and no additional compensation will be allowed therefor. SECTION 2 TRAFFIC STRIPING, PAVEMENT MARKINGS AND SIGNING 1. DESCRIPTION. --Furnishing, installing, modifying and removing striping and pavement markings shall conform Sections 15, and 84 of the Standard Specifications, and these special provisions. Standard Specifications and Standard Plans refer to the Standard Specifications and Standard Plans of the State of California, Department of Transportation, dated January, 1988. Striping, and pavement marking work shall be performed at the following location: STATE ROUTE 66 (FOOTHILL BOULEVARD) AND SIERRA AVENUE 2. EXISTING HIGHWAY FACILITIES. --Existing traffic stripes and pavement markings which conflict with those to be installed under this contract shall be removed. The removal of traffic stripes and pavement legends shall be by sandblasting in accordance with Section 15-2.02B of the Standard Specifications. 4. PAINT TRAFFIC STRIPES. --Painting traffic stripes (traffic lines) and pavement markings shall conform to the provisions in Section 84-1, "General," and 84-3, "Painted Traffic Stripes and Pavement Markings „ " of the Standard Specifications and these special provisions. All stripes and pavement markings shall be paint with glass beads. The State Specification No. for Rapid Dry Water Borne paint in Section 84- 3.02, "Materials," of the Standard Specifications is amended to read "8010- 610-30." The traffic stripes shown on Detail 34 and 34A of Standard Plan A20 -B shall be yellow instead of white. 6. PAYMENT.-- The contract prices paid for Striping and Pavement Marking shall include full compensation for furnishing all labor, materials, tools, equipment, and incidentals, and for doing all work involved in connection with the project plans including, but not limited to stripe and pavement marking removal, and installation of stripes, pavement markings and symbols, as specified in the Standard Specifications and these special provisions, and as directed by the Engineer. F. F. a