- 216 - SECTION 414 -- HIGH MAST LOWERING SYSTEMS
414.01 Description
1.The Contractor shall furnish and install a new high mast lowering system on a new or existing tower as indicated in the contract. This work shall include a headframe, headframe cove r, luminaire support ring, bracket arms, hoist winch and winch cables, hoist cables, internal power unit, and all labor, equipment, tools, and incidentals necessary to complete the work.
2.The Contractor shall be responsible for any damage to any portion of the lighting system caused by the Contractor.
414.02 Material Requirements
1.High mast lowering system s shall be on the Department’s Approved Products List.
414.03 Construction Methods
1.The Contractor shall be responsible for any modifications necessary to the tower to accommodate the high mast lowering system.
2.The Contractor shall install th e new high mast lowering system on a new or existing tower in accordance with the manufacturer's instructions and recommendations.
3.Installation of a new high mast tower lowering system may require some modification to the tower. Modifications shall be made as detailed by the Manufacturer and reviewed by the Engineer.
4.The manufacturer's representative shall be present, on site, to advise the Contractor durin g the installation and testing of the first complete lowering system. Duties of the manufact urer's representative shall include, but not be limited to, the following:
a.Directing all adjustment to the lowering system to ensure positive latching and unlatching. This will consist of a minimum of 3 complete raising and lowering cycles.
b.Training the maintaining utility company and/or Department personnel in the methods of proper maintenance to avoid lowering system malfunctions along with the proper pr ocedures to follow in the event of a hoist malfunction.
414.04 Method of Measurement
1.High mast lowering systems, furnished and installed on existing high mast towers, will be measured by the each.
414.05 Basis of Payment
1.Pay Item Pay Unit High Mast Lowering System, Type _____ Each (ea)
2.A high mast lowering system furnished by the Contractor and installed on a new tower will not be paid for directly, but will be considered subsidiary to the new high mast tower.
3.Payment is full compensation for all work described in this Section. - 217 - SECTION 415 -- MAINTE NANCE OF PROJECT LIGHTING SYSTEM
415.01 Description
1."Project Lighting System," when used in the contract, shall be taken to mean all lighting units and their asso ciated circuitry (conduit, cable, and controls) located within the limits of the project. A lighting unit is a pole, luminaire, a mast arm and anchor base unit or breakaway device.
2.The Contractor shall be resp onsible for the proper operation and maintenance of all lighting units on the project (existing, relocated, temporary, and/or new) from the time t he project begins until construction is complete and the project is accepted.
a.Damage caused by the Contractor’s forces to any equipment, including but not limited to lighting units, pull boxes, controls, or conduit and cable, shall be repaired or replaced at no cost to the Department.
b.The Contractor shall supply all needed materials. If any disruption to circuits or other components causes the lighting to fail, the Contractor shall install temporary c onductors as required and make the necessary repairs to return the system to operation at no additional cost to the Department.
c.Any damage shall be repaired within 48 hours.
3.Any existing lighting units within the project limits, not working at the time construction is started will not be the Contractor’s responsibility. The Engineer may negotiate the repair an d maintenance of the non-working lighting units with the Contractor.
415.02 Material Requirements
1.Replacement parts, except as noted in Subsection 415.03, shall be furnished by the Contractor and must be compatible with the lighting system.
2.Lamps provided shall be as shown in the contract.
415.03 Construction Methods
1.The Contractor will be responsible for locating and flagging all underground circuits to all lighting systems on the project. The Contractor will be responsible for the proper repair or replacement of any part of any lighting system on the project that is damaged as the result of the Contractor’s operations.
2.Replacement parts:
a.Replacement parts for new light ing units (units being installed under the present contract) shall be furnished by the Contractor.
b.Replacement parts (poles , mast arms, breakaway bases, power foundations, and luminaires) for existing, relocated, and temporary lighting systems will be available at the Department's storage area in Lincoln.
3.Lamps for all units shall be supplied by the Contractor. 4. If for any reason a lighting unit fails or is damaged, it shall be repaired or replaced and put back in wo rking order within 48 hours from the time of failure or damage.
Source: Nebraska Standard Specifications for Highway Construction, 2017 Edition. Pages 250–250 of 1,048.