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1 <br /> City of Everett 01 5500 - 4 <br /> Evergreen Branch Library Expansion 2017-008 <br /> 8. If grading work is on or next to a Roadway in use, the Contractor shall finish the <br /> grade immediately after rough grading and place surfacing Materials as the Work <br /> proceeds. <br /> 9. Conduct all operations to minimize any drop offs ("drop-off' is defined as abrupt <br /> changes in Roadway elevation) left exposed to traffic during non working hours. <br /> Unless otherwise directed in the Traffic Control Plan, the Contractor shall also <br /> protect drop offs left exposed to traffic during non working hours as follows: <br /> a. Drop offs up to 0.20 foot may remain exposed with appropriate warning signs <br /> alerting motorists of the condition. <br /> b. Drop offs more than 0.20 foot that are in the Traveled Way or Auxiliary Lane <br /> will not be allowed unless motorists are informed about the danger of a drop <br /> off immediately ahead of them with appropriate warning signs and protection <br /> is provided as indicated in the immediately following subparagraphs c.1) or <br /> c.2). <br /> c. Drop offs with depths more than 0.20 foot, but no more than 0.50 foot, that <br /> are not within the Traveled Way will not be allowed unless motorists are <br /> informed about the danger of a dropoff immediatelyahead of them with <br /> 9 <br /> appropriate warning signs and further protected by having one of the <br /> following: <br /> 1) Channeling devices (Type I barricades, plastic safety drums, or other 111 <br /> devices 36 inches or more in height) placed along the traffic side of the <br /> drop off and a new edge of pavement stripes placed a minimum of 3 <br /> feet from the drop off on the traffic side. The "number" in feet of <br /> maximum spacing between the devices shall be the posted speed <br /> "number" in miles per hour. Signs, warning of pavement drop off, shall <br /> be placed in advance of and throughout the drop off treatment. <br /> 2) Temporary concrete barrier or other approved barrier installed on the <br /> traffic side of the drop off with 1 foot between the drop off and the drop <br /> off side of the barrier and a new edge of pavement stripe a minimum <br /> of 2 feet from the face of the traffic side of the barrier. An approved <br /> terminal, flare, or impact attenuator will be required at the beginning of <br /> the barrier facing oncoming traffic. For night use,the barrier shall have <br /> standard delineation such as paint, reflective tape, lane markers, or <br /> warning lights. <br /> 10. Open trenches within the Traveled Way or Auxiliary Lane shall have a steel plate <br /> cover placed and anchored over them. A wedge of suitable material, if required, <br /> shall be placed for a smooth transition between the Pavement Structure and the <br /> steel plate. Warning signs shall be used to alert motorists of the presence of the <br /> steel plates. I <br /> D. The Contractor shall be responsible for providing adequate safeguards, safety devices, <br /> and protective Equipment, and for taking any other needed actions to protect the life, <br /> health, and safety of the public, and to protect property in connection with the <br /> performance of the Work covered by the Contract. The Contractor shall perform any <br /> measures or actions the Owner may deem necessary to protect the public and property. <br /> The responsibility and expense to provide this protection shall be the Contractor's except <br /> that which is to be furnished by the Owner as specified in other Sections of these <br /> Specifications: <br /> I <br /> 1.5 PEDESTRIAN CONTROL AND PROTECTION <br /> 01 5500 - 4 VEHICULAR ACCESS AND PARKING ' <br />