{"id":159204,"date":"2023-09-14T12:07:51","date_gmt":"2023-09-14T06:37:51","guid":{"rendered":"https:\/\/www.gkseries.com\/blog\/?p=159204"},"modified":"2023-09-14T12:07:54","modified_gmt":"2023-09-14T06:37:54","slug":"the-indoor-illumination-requirement-for-a-building-is-350-lux-if-the-daylight-factor-is-2-7","status":"publish","type":"post","link":"https:\/\/www.gkseries.com\/blog\/the-indoor-illumination-requirement-for-a-building-is-350-lux-if-the-daylight-factor-is-2-7\/","title":{"rendered":"The indoor illumination requirement for a building is 350 Lux. If the daylight factor is 2.7"},"content":{"rendered":"\n<p>Q. The indoor illumination requirement for a building is 350 Lux. If the daylight factor is 2.7 and the design sky illuminance is 9000 Lux, then the required supplementary artificial lighting is________Lux.<\/p>\n\n\n\n<p>Ans: 107 to 107<\/p>\n\n\n\n<p>Sol:<\/p>\n\n\n\n<p>The three components contributing to daylight factor are: (a) sky component (SC), (b) externally reflected component (ERC), and (c) internally reflected component (IRC).<br>Thus, DF = SC + ERC + IRC<br>Daylight factor is also defined as the ratio of indoor illumination to the corresponding outdoor illumination can be taken as constant.<br>This constant ratio, expressed in percentage, is the daylight factor (DF), given by :<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"100\" height=\"47\" src=\"https:\/\/www.gkseries.com\/blog\/wp-content\/uploads\/2023\/09\/image-48.png\" alt=\"\" class=\"wp-image-159205\"\/><\/figure>\n\n\n\n<p>where, E<sub>i<\/sub>\u00a0= indoor illumination at the point of consideration &amp; E<sub>o<\/sub>\u00a0= outdoor illumination from unobstructed sky.<br>Here, DF = 2.7, Eo = 9000 Lux.<br>Assume the existing indoor illumination (E<sub>i<\/sub>) = \u2018P&#8217; Lux.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Q. The indoor illumination requirement for a building is 350 Lux. If the daylight factor is 2.7 and the design sky illuminance is 9000 Lux, then the required supplementary artificial lighting is________Lux. Ans: 107 to 107 Sol: The three components contributing to daylight factor are: (a) sky component (SC), (b) externally reflected component (ERC), and [&hellip;]<\/p>\n","protected":false},"author":419,"featured_media":159206,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[5141],"tags":[5140],"class_list":["post-159204","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-gate","tag-gate-questions"],"_links":{"self":[{"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/posts\/159204","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/users\/419"}],"replies":[{"embeddable":true,"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/comments?post=159204"}],"version-history":[{"count":1,"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/posts\/159204\/revisions"}],"predecessor-version":[{"id":159207,"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/posts\/159204\/revisions\/159207"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/media\/159206"}],"wp:attachment":[{"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/media?parent=159204"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/categories?post=159204"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.gkseries.com\/blog\/wp-json\/wp\/v2\/tags?post=159204"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}