{"id":29504,"date":"2019-10-17T11:28:14","date_gmt":"2019-10-17T09:28:14","guid":{"rendered":"https:\/\/mcrtecresa.com\/?p=29504"},"modified":"2025-10-22T12:52:15","modified_gmt":"2025-10-22T10:52:15","slug":"sectorisation-approprie-aux-passages-des-installations-grillages-intumecentes","status":"publish","type":"post","link":"https:\/\/mcrtecresa.com\/fr\/blog\/sectorisation-approprie-aux-passages-des-installations-grillages-intumecentes","title":{"rendered":"Sectorisation appropri\u00e9 aux passages des installations &#8211; Grillages intumescentes pour la ventilation naturelle"},"content":{"rendered":"<p style=\"text-align: justify;\">Dans ce post, nous parlerons d&rsquo;un probl\u00e8me fr\u00e9quent. Dans de nombreux endroits, nous sommes confront\u00e9s \u00e0 des espaces prot\u00e9g\u00e9s qui exigent une sectorisation et, au m\u00eame moment, une ventilation naturelle (et non une ventilation forc\u00e9e, dont nous parlions dans un autre article) ; comme le CTE l&rsquo;a d\u00e9j\u00e0 mentionn\u00e9 dans la section DB-SI, deux alternatives sont envisageables :<\/p>\n<ul style=\"text-align: justify;\">\n<li><em>Disposer d&rsquo;un \u00e9l\u00e9ment qui, en cas d&rsquo;incendie, va automatiquement emp\u00eacher le passage de la section transversale et garantir ainsi en ce point une r\u00e9sistance au feu au moins \u00e9gale \u00e0 celle de l&rsquo;\u00e9l\u00e9ment travers\u00e9. Par exemple, un clapet coupe-feu automatique EI t (i &lt;-&gt; o) o\u00f9 t est le temps de r\u00e9sistance au feu requis pour l&rsquo;\u00e9l\u00e9ment de compartimentage crois\u00e9, ou un dispositif d&rsquo;\u00e9tanch\u00e9it\u00e9 intumescent.<\/em><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><em>\u00a0<\/em><\/p>\n<ul style=\"text-align: justify;\">\n<li><em>\u00c9l\u00e9ments traversants dont la r\u00e9sistance au feu est au moins \u00e9gale \u00e0 celle de l&rsquo;\u00e9l\u00e9ment travers\u00e9, par exemple les gaines de ventilation EI t (i &lt;-&gt; o) o\u00f9 t est le temps requis de r\u00e9sistance au feu de l&rsquo;\u00e9l\u00e9ment compartiment\u00e9.<\/em><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><em>\u00a0<\/em><\/p>\n<p style=\"text-align: justify;\">Il est \u00e9galement sp\u00e9cifi\u00e9 les <strong>grillages intumescentes<\/strong> DB-SI dans son \u00e9dition annot\u00e9e pour la ventilation des d\u00e9barras vers le garage, quand chaque d\u00e9barras est s\u00e9par\u00e9 individuellement comme un endroit \u00e0 risque particulier.<\/p>\n<p style=\"text-align: justify;\">Aujourd&rsquo;hui, nous parlons de la premi\u00e8re option, et plus pr\u00e9cis\u00e9ment des dispositifs \u00e0 obturation intumescents, plus connus sous le nom de grilles intumescentes. Ceux-ci sont la solution id\u00e9ale lorsqu&rsquo;il s&rsquo;agit de donner une ventilation naturelle \u00e0 un endroit qui en n\u00e9cessite, par exemple, une salle de transformateurs qui g\u00e9n\u00e8re de la chaleur ou tout appareil qui n\u00e9cessite une ventilation naturelle, comme un petit renouvellement d&rsquo;air. Pour ce faire, un clapet coupe-feu pourrait \u00e9galement \u00eatre plac\u00e9 avec un fusible qui se d\u00e9clenche en cas d&rsquo;incendie, mais le co\u00fbt \u00e9conomique sera plus \u00e9lev\u00e9 que pour une grille intumescente, qui a la m\u00eame fonction.<\/p>\n<p style=\"text-align: justify;\">Chez <strong>mcr tecresa\u00ae<\/strong>, nous avons d\u00e9velopp\u00e9 la <a href=\"https:\/\/mcrtecresa.com\/fr\/systemes-d-etancheite-tecsel\/grillage-tecsel\">grille Tecsel\u00ae<\/a> pour permettre la ventilation naturelle de ce type d`endroit, en plus d`en assurer la sectorisation dans ce cavit\u00e9. Notre grille Tecsel est compos\u00e9e d&rsquo;un produit appel\u00e9 Palusol (silicate de calcium hydrat\u00e9 + mati\u00e8re organique + fibre de verre) qui est renforc\u00e9 avec une r\u00e9sine \u00e9poxy pour le prot\u00e9ger des intemp\u00e9ries et une enveloppante PVC. Ce mat\u00e9riau commence \u00e0 r\u00e9agir au-dessus de 100 \u00baC en augmentant son volume de mani\u00e8re \u00e0 ce que le trou soit compl\u00e8tement ferm\u00e9.<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: justify;\"><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/mcrtecresa.com\/wp-content\/uploads\/2019\/10\/RejillasTecsel.jpg\" alt=\"\" width=\"1226\" height=\"590\" \/><\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: justify;\">Ces <strong>grillages Tecsel<\/strong> \u00ae sont fabriqu\u00e9es en diff\u00e9rentes dimensions en fonction des besoins de ventilation de chaque espace. La dimension maximale test\u00e9e est de 600 x 600 mm. Si le besoin de ventilation est sup\u00e9rieur, il est possible de les placer en pile, \u00e0 condition d&rsquo;avoir une distance d&rsquo;au moins 10 cm entre eux avec un mat\u00e9riau qui nous donne la m\u00eame r\u00e9sistance au feu que celle n\u00e9cessaire pour le mitoyen. Pour fixer la grille au mur, il faut que les \u00e9l\u00e9ments de montage aient la m\u00eame r\u00e9sistance au feu que la grille. S&rsquo;il y a des espaces entre la grille et le parement, il faut les sceller avec le <a href=\"https:\/\/mcrtecresa.com\/fr\/systemes-d-etancheite-tecsel\/mastic-intumescent-tecsel\">Mastic Tecsel<\/a> \u00ae.<\/p>\n<p style=\"text-align: justify;\">Des <strong>grillages circulaires Tecsel\u00ae<\/strong> sont \u00e9galement tr\u00e8s efficaces lorsqu&rsquo;il s&rsquo;agit de faire des conduits de ventilation naturelle ronds et de les sectoriser.<\/p>\n<p style=\"text-align: justify;\"><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/mcrtecresa.com\/wp-content\/uploads\/2018\/03\/Foto-Rejilla-circular-Tecsel.jpg\" alt=\"\" width=\"500\" height=\"491\" \/><\/p>\n<p style=\"text-align: justify;\">Pour d\u00e9terminer la dimension de la grille en fonction de la surface de ventilation requise, nous tiendrons toujours compte que l&rsquo;ossature de la grille fait de Palusol suppose un obstacle au passage de l&rsquo;air (environ 40%).<\/p>\n<p style=\"text-align: justify;\">Il est important de pr\u00e9ciser que ces grilles intumescentes ne sont pas valides lorsque nous avons une ventilation forc\u00e9e. La raison en est que le produit intumescent, une fois qu&rsquo;il a augment\u00e9 son volume, se d\u00e9forme excessivement avec l&rsquo;aspiration ou la pression d&rsquo;air, et peut ne pas atteindre son objectif comme \u00e9l\u00e9ment sectorisant. Pour cette situation, des clapets coupe-feu ou des gaines r\u00e9sistantes au feu sont indiqu\u00e9s.<\/p>\n<p style=\"text-align: justify;\">N\u2019h\u00e9sitez pas de\u00a0<strong><a href=\"https:\/\/mcrtecresa.com\/fr?page_id=18855\">contacter<\/a>\u00a0<\/strong>notre \u00e9quipe pour de renseignements compl\u00e9mentaires.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dans ce post, nous parlerons d&rsquo;un probl\u00e8me fr\u00e9quent. Dans de nombreux endroits, nous sommes confront\u00e9s \u00e0 des espaces prot\u00e9g\u00e9s qui exigent une sectorisation et, au m\u00eame moment, une ventilation naturelle&#8230;<\/p>\n","protected":false},"author":2,"featured_media":29508,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[85],"tags":[],"class_list":["post-29504","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mcr-tecresa"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Sectorisation appropri\u00e9 aux passages des installations - Grillages<\/title>\n<meta name=\"description\" content=\"Dans ce post, nous parlerons d\u2019un probl\u00e8me fr\u00e9quent. 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