Download Lighting redesign for existing buildings by Craig DiLouie PDF
By Craig DiLouie
In Lighting redecorate for present Buildings, veteran journalist and educator Craig DiLouie identifies possibilities to either keep power and enhance lights functionality in latest structures. The e-book outlines the decision-making technique in the back of even if to retrofit or redecorate an current lighting fixtures procedure, describes easy lights layout ideas and the way to guage lights apparatus, information lights laws and effort codes, identifies complicated lighting fixtures innovations, and describes the position deliberate upkeep can play in saving power and making sure long term functionality. Readers will achieve in-depth perception into assessing and shooting their possibilities with greater lighting.
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Additional resources for Lighting redesign for existing buildings
In the Spotlight: Using a Light Meter efore taking any measurements from a system in which new fluoresB cent lamps have just been installed, allow 100 hours of operating time for the lamps to stabilize. To get a true reading, no outdoor light can be allowed to enter the area. Since most lighting management operations happen after normal work hours, this may not be a problem. A procedure for measuring the amount of light in a space is provided below for general educational purposes. For specific procedures, consult the light meter manufacturer.
Uniform distribution with high light levels and bright walls and ceilings can enhance the sense of spaciousness. Task luminance should be higher than its surround to focus attention but not so high that uniformity is lost and visual fatigue may result. As a guide, IES provides recommended luminance ratios for various applications. Generally, up to three times more light on a workplane task than its immediate surround will direct attention to the task but not cause visual fatigue. The Types of Glare Excessive luminances or luminance contrasts may also lead to a visual sensation called glare, which, even though it is also light, can impair or disable vision rather than enable it.
In many applications, the higher the CRI the better, with 80-100 being optimal for rendering colors more “naturally”—that is, how most people would expect them to appear, and >90 for color-important applications, such as retail applications where merchandise appearance and appraisal is critical. Many energy-efficient light sources, from T8 linear fluorescent to ceramic metal halide, offer good color quality. Note again that color rendering is also dependent on color temperature, so looking for the right combination for a specific project need is essential.