A Guidebook for Nighttime Construction: Impacts on Safety, Quality, and Productivity (2012) / Chapter Skim
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Pages 15-28
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15 The importance of proper lighting arrangements in nighttime work zones is obvious. Construction work-zone lighting and glare specifications should require appropriate levels of lighting based on work tasks.
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16 A Guidebook for Nighttime Construction: Impacts on Safety, Quality, and Productivity illuminance depends on the task detail level, but grid point spacing should generally range from 1 to 3 ft. Key Take-Aways Illuminance is the amount of light that falls on a surface.
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Illumination 17 the jobsite, Emin. The following equation shows the above-described calculation of the uniformity ratio (El-Rayes and Hyari 2005a)
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18 A Guidebook for Nighttime Construction: Impacts on Safety, Quality, and Productivity experienced by drivers at these positions or locations using the luminance meter as explained in the previous sections. Tip Glare can be decreased by increasing pavement luminance (by increasing background lighting)
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Illumination 19 The above-described factors have been used to determine illumination standards in a number of industries. Table 3.2 presents the levels of illumination necessary for major construction activities.
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20 A Guidebook for Nighttime Construction: Impacts on Safety, Quality, and Productivity IDOT Standard Specifications, Section 701.13 "Flaggers:" For nighttime flagging, flaggers shall be illuminated by an overhead light source providing a minimum vertical illuminance of 10 fc (108 lux) measured 1 ft (300 mm)
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Illumination 21 two studies IDOT commissioned: Nighttime Construction -- Evaluation of Lighting for Highway Construction Operations in Illinois (Report No.
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22 A Guidebook for Nighttime Construction: Impacts on Safety, Quality, and Productivity Work Description Minimum Level (ft candles) Minimum Lighting Area Embankment Excavation Landscaping (seeding and sodding)
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Illumination 23 NEW YORK STATE DEPARTMENT OF TRANSPORTATION STANDARD SPECIFICATIONS as of May 1, 2008 619-3.19 Nighttime Operations.
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24 A Guidebook for Nighttime Construction: Impacts on Safety, Quality, and Productivity d. Equipment Mounting.
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Illumination 25 Balloon Lighting Balloon lights are intended for use as equipment-mounted lights or in stationary locations such as flagger stations (Figure 3.10)
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26 A Guidebook for Nighttime Construction: Impacts on Safety, Quality, and Productivity The luminaire was powered by a 120-volt AC source that could produce up to 42,000 lumens, which could provide lighting for an area of 1,395 sq m (El-Rayes et al.
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Illumination 27 Figure 3.11. Nite Lite lighting equipment (El-Rayes et al.
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28 A Guidebook for Nighttime Construction: Impacts on Safety, Quality, and Productivity Key Take-Aways • Light towers are the most common type of construction lighting equipment. Light towers are suitable for lighting large stationary areas.
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