{"id":217,"date":"2014-08-29T14:26:27","date_gmt":"2014-08-29T18:26:27","guid":{"rendered":"https:\/\/designinglight.com\/?p=217"},"modified":"2014-08-29T14:26:27","modified_gmt":"2014-08-29T18:26:27","slug":"ies-releases-rp-31-14-recommended-practice-for-the-economic-analysis-of-lighting","status":"publish","type":"post","link":"https:\/\/designinglight.com\/?p=217","title":{"rendered":"IES Releases RP-31-14 Recommended Practice for the Economic Analysis of Lighting"},"content":{"rendered":"

The Illuminating Engineering Society<\/a> has released a new Recommended Practice. \u00a0RP-31-14 Recommended Practice for the Economic Analysis of Lighting<\/em> is now available as a PDF download or soft back from the IES Online Store<\/a>. \u00a0From the IES:<\/p>\n

Good lighting should be responsive to the needs of the user. Among those needs are the aesthetic and the visual, as admitted in the oft-quoted “lighting is both a science and an art.” But the user also has economic needs. In fact, it is the economic needs that often drive the decision making process when lighting systems are designed and purchased.\u00a0<\/span>

This recommended practice is written from the point of view that “economic analysis” is not the same as “how to beat the budget.” Rather than considering economic analysis as the antithesis of engineering or artistic analysis, is should be thought of as subsuming these other needs. When a competent lighting professional takes care of economic needs, in conjunction with the artistic, engineering, and other needs, it increases the likelihood a project will have success and longevity. Financial considerations ad demonstrated through an accurate lighting financial analysis are important, but other elements such as aesthetics, human visual performance resulting from a lighting system appropriate to a given task, and other considerations involved in lighting for the human and natural environment are of equal importance.<\/span><\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"

The Illuminating Engineering Society has released a new Recommended Practice. \u00a0RP-31-14 Recommended Practice for the Economic Analysis of Lighting is now available as a PDF download or soft back from the IES Online Store. \u00a0From the IES: Good lighting should be responsive to the needs of the user. Among those needs are the aesthetic and … Continue reading IES Releases RP-31-14 Recommended Practice for the Economic Analysis of Lighting<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[18,19,4],"tags":[57,58],"class_list":["post-217","post","type-post","status-publish","format-standard","hentry","category-design","category-lighting-profession","category-sustainability","tag-fixture-costs","tag-lighting-economics"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p4gZSw-3v","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"jetpack-related-posts":[{"id":1436,"url":"https:\/\/designinglight.com\/?p=1436","url_meta":{"origin":217,"position":0},"title":"IES RP-16 is Now IES LS-1","author":"Jason Livingston","date":"December 9, 2020","format":false,"excerpt":"The Illuminating Engineering Society's Recommended Practice 16 Nomenclature and Definitions for Illuminating Engineering (aka RP-16) has long been one of the two reference sources for the definition of lighting related words and phrases - the other being the CIE International Lighting Vocabulary (ILV). As part of the IES converting all\u2026","rel":"","context":"In "Documentation"","block_context":{"text":"Documentation","link":"https:\/\/designinglight.com\/?cat=7"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":743,"url":"https:\/\/designinglight.com\/?p=743","url_meta":{"origin":217,"position":1},"title":"IES Lighting Terms and Definitions Now Online","author":"Jason Livingston","date":"July 17, 2017","format":false,"excerpt":"ANSI\/IES RP-16\u00a0Nomenclature and Definitions for Illuminating Engineering\u00a0has long been one of the two major documents defining terms related to lighting design (the other is CIE ILV: International Lighting Vocabulary). \u00a0RP-16-10 (the 2010 version of the Recommended Practice) is now available online as a searchable database. \u00a0From the first page you\u2026","rel":"","context":"In "Lighting Profession"","block_context":{"text":"Lighting Profession","link":"https:\/\/designinglight.com\/?cat=19"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":869,"url":"https:\/\/designinglight.com\/?p=869","url_meta":{"origin":217,"position":2},"title":"IES Releases Ready Reference App","author":"Jason Livingston","date":"September 4, 2018","format":false,"excerpt":"For many years the IES Ready Reference was on the desk of every lighting designer, and we were all baffled when they stopped publishing it. \u00a0Great news, it's back! \u00a0This time as an app for your phone or tablet that's available in the Apple App Store and Google Play. \u00a0According\u2026","rel":"","context":"In "Education"","block_context":{"text":"Education","link":"https:\/\/designinglight.com\/?cat=21"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":5264,"url":"https:\/\/designinglight.com\/?p=5264","url_meta":{"origin":217,"position":3},"title":"TM-30 Users Guide Now Available","author":"Jason Livingston","date":"February 19, 2026","format":false,"excerpt":"I'm delighted to announce that ANSI\/IES LP-30 Lighting Practice: A Comprehensive Guide to Specifying Color Rendition \u2014 Concepts, Criteria, and Implementation is now available in the IES Online Lighting Library and the IES Store. For more than three years, a half dozen IES Color Committee members worked to create a\u2026","rel":"","context":"In "Color"","block_context":{"text":"Color","link":"https:\/\/designinglight.com\/?cat=12"},"img":{"alt_text":"IES LP-30","src":"https:\/\/i0.wp.com\/designinglight.com\/wp-content\/uploads\/2026\/02\/LP-30-26_cover-510x660-1-232x300.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":5394,"url":"https:\/\/designinglight.com\/?p=5394","url_meta":{"origin":217,"position":4},"title":"A Brief History of TM-30","author":"Jason Livingston","date":"April 9, 2026","format":false,"excerpt":"Next Wednesday I\u2019ll be giving a presentation on LP-30 at LEDucation (hope to see you there!), and in preparing for it I\u2019ve been reflecting on how far we\u2019ve come in our understanding and evaluation of color rendering. \u00a0 The Color Rendering Index (CRI) was published by the International Commission on\u2026","rel":"","context":"In "Color"","block_context":{"text":"Color","link":"https:\/\/designinglight.com\/?cat=12"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":5135,"url":"https:\/\/designinglight.com\/?p=5135","url_meta":{"origin":217,"position":5},"title":"TM-30 and LP-30 at Lightovation","author":"Jason Livingston","date":"December 3, 2025","format":false,"excerpt":"The IES is about to publish ANSI\/IES LP-30 Lighting Practice:\u00a0 A Comprehensive Guide to Specifying Color Rendition \u2013\u00a0 Concepts, Criteria, and Implementation, which is essentially a user's guide to TM-30. \u00a0The IES Color Committee worked on it for over two years to create an easy to read, comprehensive, phase-by-phase guide\u2026","rel":"","context":"In "Color"","block_context":{"text":"Color","link":"https:\/\/designinglight.com\/?cat=12"},"img":{"alt_text":"Lightovations 2026 Logo","src":"https:\/\/i0.wp.com\/designinglight.com\/wp-content\/uploads\/2025\/12\/image002.png?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/designinglight.com\/wp-content\/uploads\/2025\/12\/image002.png?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/designinglight.com\/wp-content\/uploads\/2025\/12\/image002.png?resize=525%2C300&ssl=1 1.5x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/designinglight.com\/index.php?rest_route=\/wp\/v2\/posts\/217","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/designinglight.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/designinglight.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/designinglight.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/designinglight.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=217"}],"version-history":[{"count":1,"href":"https:\/\/designinglight.com\/index.php?rest_route=\/wp\/v2\/posts\/217\/revisions"}],"predecessor-version":[{"id":218,"href":"https:\/\/designinglight.com\/index.php?rest_route=\/wp\/v2\/posts\/217\/revisions\/218"}],"wp:attachment":[{"href":"https:\/\/designinglight.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=217"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/designinglight.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=217"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/designinglight.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=217"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}