Installation Methods of External, Exterior and Outdoor Lighting System includes lighting equipment luminaires, control gears, panel boards, poles, brackets, cabling, and allied minor civil works. All installations are to be carried out under strict supervision of qualified supervisors and engineers. If installation required heavy vehicles, extreme care has to be taken for preventing damages of lighting equipment, control gears and poles.
Equipment Installation for External, Exterior and Outdoor Lighting System
Install equipment to be readily accessible for operation, maintenance and repair. Minor deviations from the Drawings may be made to accomplish this but no changes are to be made without the approval of the Engineer.
Column Bases Installation
Install columns on concrete bases as detailed on the Drawings. Before commencement of construction, ensure that bases are suitable for column installation. Holding down and plumb adjusting nuts, washers, locknuts or nyloc nuts: to be stainless steel or cadmium plated.
Installation of Lighting Columns
Erect columns so that luminaires are located on a line parallel to theoretical profile of road. Alignment of columns, both horizontally and vertically, is to be secured to the satisfaction of the Engineer. Brackets are to be set at 90 degrees to longitudinal axis of road.
Install poles as follows:
- Use web fabric slings (not chain or cable) to raise and set poles.
- Mount pole to foundation with leveling nuts, and tighten top nuts to torque level recommended by pole manufacturer.
- Secure poles level, plumb, and square.
- Grout void between pole base and foundation. Use non-shrinking or expanding concrete grout firmly packed in entire void space.
- Use a short piece of !3-mm diameter pipe to make a drain hole through grout.
- Arrange to drain condensation from interior of pole.
Luminaire Attachment with Adjustable Features or Aiming
Attach luminaires and supports to allow aiming for indicated light distribution.
Mounting Adjustments of the Lighting Luminaires
- After demonstrating to the Engineer that specified lighting requirements have been met, carry out final setting and locking in position of the floodlights.
- Luminaire Attachment: Fasten to indicated structural supports.
- Lamp luminaires with indicated lamps according to manufacturer's written instructions. Replace malfunctioning lamps.
- Cabling, Conduits and Ductwork: Carry out in accordance with Division !6 Section Conductors and Cabling. Cable ducts are to be directly buried except at crossings with other service work or roads.
- Provide labeling of luminaries using stainless steel labels fixed to adjoining surface with suitable anchor screws.
Inspection and Tests on Site
- Visual inspection is to include inspection of condition of each piece of equipment, quality of workmanship, alignment, perpendicularity, labeling and the like, all in conformance with the Specification.
- Insulation resistance and continuity tests are to be carried out on each circuit and piece of equipment before energization, with circuit breakers in the open position and lamps not installed.
- Operational tests are to be carried out on all circuit breakers and control gear, with lamps installed, including recording voltage at terminals of ballasts on final columns of each circuit and at distribution panel or the like.
- Performance tests are to be carried out after l 00 hours normal operation, and are to include measurement of lighting and uniformity levels on required illuminated surfaces.
- Other tests are to be carried out as required by the Engineer to verify conformity with the Specification.
- Earthing resistance tests are to include measurement of earth electrode resistance at final points of circuits and continuity of protective conductors.
- Results of tests are to be recorded on site and signed by witnessing parties. H Provide calibrated instruments to make and record test results.
- Tests and Observations: Verify normal operation of lighting units after installing luminaires and energizing circuits with normal power source, and as follows:
- Measure light intensities at night to confirm specific illumination performance as indicated. Use calibrated photometers.
- Check intensity and uniformity of illumination.
- Check excessively noisy ballasts.
- Prepare a written, numbered report of tests, inspections, observations and verification indicating and interpreting results.
- Malfunctioning Fixtures and Components: Replace or repair, then retest. Repeat procedure until units operate properly.