{"id":11298,"date":"2018-04-01T09:18:06","date_gmt":"2018-04-01T07:18:06","guid":{"rendered":"https:\/\/mercorlv.es?p=11298"},"modified":"2018-12-02T22:10:22","modified_gmt":"2018-12-02T20:10:22","slug":"smoke-evacuation-in-malls-ii-2","status":"publish","type":"post","link":"https:\/\/mercorlv.es\/en\/blog\/smoke-evacuation-in-malls-ii-2","title":{"rendered":"Smoke Evacuation in Malls (II)"},"content":{"rendered":"

Malls are public facilities places and, in addition to the special configuration of most of\u00a0the current Shopping Centers, similar to american malls with several floors connected with an Atrium<\/strong>, we should take a special care in the proper Smoke Evacuation Systems installed in these spaces in order to allow the correct evacuation in case of fire, such as it is described in the DB-SI Section 3 chapter 8:\u00a0“In the following cases, a fire smoke control system capable of guaranteeing such control during the evacuation of the occupants must be installed, so that it can be carried out safely:<\/em><\/p>\n

a) Parking areas that are not considered an open parking.<\/em><\/p>\n

b) Establishments for commercial use or public facilities whose occupation exceeds 1000 people.<\/em><\/p>\n

c) Atriums when their occupancy in all areas and plants in the same fire sector exceeds 500 persons or when it is intended to be used for the evacuation of more than 500 persons.<\/em><\/p>\n

In addition:\u00a0“In a shopping center, requirements for a smoke control system (SI 3-8) and fire protection facilities (SI 4-1) are applicable to the whole shopping center , therefore, to all the establishments integrated in the same having different commercial uses.\u201d<\/em><\/p>\n

Regarding the required evacuation surface of smoke AvCv, it will be made according to the standard UNE 23.585, having as a main hypothesis of calculation allowing people evacuation, and serving also as a system to control the temperature of the fumes layer and avoiding the collapse of the structure, as well as to avoid the “Flash Over” or the generalized sudden combustion. On the other hand, its use facilitates the rapid intervention of fire extinguishing services by creating a smoke-free space in which to be able to visualize the fire’s focus and to stifle it more quickly.<\/p>\n

This standard indicates that the minimum clear height (without smoke) above the evacuation routes must be 3 m. Also we have to take into account that the smoke deposits can not have a surface bigger than 2,000 m2 in natural evacuation, nor exceed 60 m. in its axis of greater dimension. This is to prevent the fumes from cooling down and lowering making the system unusable.<\/p>\n

\"\"With these calculation hypotheses and considering that the fire is going to occur in the most unfavorable place, we can calculate the amount of smoke that is generated that will depend on the heating power of the combustible materials. Also we take into account that the smoke column collect large amount of outside air while changing direction or ascending, while it barely collects air when going horizontally. We can calculate the smoke deposits and the surface with a series of formulas collected from the standard, we can calculate the smoke deposits and the smoke evacuation per deposit necessary for the system to work and to avoid that the smoke temperature was not so enough high to collapse the structure, nor so low that the fumes didn\u2019t rise and again obstruct the escape routes.
\n\"\"<\/p>\n

It is also convenient to see certain geometric aspects that will help that the smoke layer does not flood possible escape routes as shown in the attached chart<\/p>\n

On the other hand, if the spill of the plume as shown in the chart below is very large and we are not interested in it for calculation purposes, so if it is too cool the layer of fumes we can place channeling screens to reduce this distance and it will have much less clean air intake.<\/p>\n

In the Technical Department of MercorTecresa, we carry out these calculations, according to regulations, dimensioning the different smoke tanks to achieve an\u00a0optimal Smoke Evacuation System in case of fire,<\/strong><\/a>\u00a0as we have been doing for almost 20 years. Of course, also from our works department we make its correct installation and the subsequent system maintenance.<\/p>\n

\"\"<\/p>\n","protected":false},"excerpt":{"rendered":"

Malls are public facilities places and, in addition to the special configuration of most of\u00a0the current Shopping Centers, similar to american malls with several floors connected with an Atrium, we…<\/p>\n","protected":false},"author":2,"featured_media":7671,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-11298","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry"],"yoast_head":"\nSmoke Evacuation in Malls (II) - Mercor Light & Vent<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/mercorlv.es\/en\/blog\/smoke-evacuation-in-malls-ii-2\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Smoke Evacuation in Malls (II) - Mercor Light & Vent\" \/>\n<meta property=\"og:description\" content=\"Malls are public facilities places and, in addition to the special configuration of most of\u00a0the current Shopping Centers, similar to american malls with several floors connected with an Atrium, we...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/mercorlv.es\/en\/blog\/smoke-evacuation-in-malls-ii-2\" \/>\n<meta property=\"og:site_name\" content=\"Mercor Light & Vent\" \/>\n<meta property=\"article:published_time\" content=\"2018-04-01T07:18:06+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2018-12-02T20:10:22+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/mercorlv.es\/wp-content\/uploads\/2018\/03\/post_931_img.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"300\" \/>\n\t<meta property=\"og:image:height\" content=\"202\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Roberto Perez Salillas\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Roberto Perez Salillas\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/mercorlv.es\/en\/blog\/smoke-evacuation-in-malls-ii-2#article\",\"isPartOf\":{\"@id\":\"https:\/\/mercorlv.es\/en\/blog\/smoke-evacuation-in-malls-ii-2\"},\"author\":{\"name\":\"Roberto Perez Salillas\",\"@id\":\"https:\/\/mercorlv.es\/en#\/schema\/person\/abd79e7627def62f436dfac99cfa10fe\"},\"headline\":\"Smoke Evacuation in Malls (II)\",\"datePublished\":\"2018-04-01T07:18:06+00:00\",\"dateModified\":\"2018-12-02T20:10:22+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/mercorlv.es\/en\/blog\/smoke-evacuation-in-malls-ii-2\"},\"wordCount\":631,\"publisher\":{\"@id\":\"https:\/\/mercorlv.es\/en#organization\"},\"image\":{\"@id\":\"https:\/\/mercorlv.es\/en\/blog\/smoke-evacuation-in-malls-ii-2#primaryimage\"},\"thumbnailUrl\":\"https:\/\/mercorlv.es\/wp-content\/uploads\/2018\/03\/post_931_img.jpg\",\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/mercorlv.es\/en\/blog\/smoke-evacuation-in-malls-ii-2\",\"url\":\"https:\/\/mercorlv.es\/en\/blog\/smoke-evacuation-in-malls-ii-2\",\"name\":\"Smoke Evacuation in Malls (II) - 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