{"id":4287,"date":"2023-03-16T15:17:16","date_gmt":"2023-03-16T14:17:16","guid":{"rendered":"https:\/\/dbvib-ingenierie.com\/?p=4287"},"modified":"2023-09-11T09:10:06","modified_gmt":"2023-09-11T07:10:06","slug":"realisation-dun-salle-anechoique-et-dune-salle-calme-pour-linrs","status":"publish","type":"post","link":"https:\/\/dbvib-ingenierie.com\/realisation-dun-salle-anechoique-et-dune-salle-calme-pour-linrs\/","title":{"rendered":"Salle an\u00e9cho\u00efque &amp; salle calme pour l&#8217;INRS"},"content":{"rendered":"<p>L&#8217;Institut National de Recherche et S\u00e9curit\u00e9 de Vand\u0153uvre-l\u00e8s-Nancy, lors de la r\u00e9novation de son b\u00e2timent accueillant les activit\u00e9s de recherche du d\u00e9partement ing\u00e9nierie des \u00e9quipements de travail a confi\u00e9 \u00e0 dB Vib la r\u00e9alisation d&#8217;une <a href=\"https:\/\/dbvib-ingenierie.com\/produit\/chambre-anechoique-semi-anechoique\/\">salle an\u00e9cho\u00efque<\/a> et d&#8217;une salle calme.<\/p>\n<h2>Salle an\u00e9cho\u00efque<\/h2>\n<p>Dimensions : 6,2m longueur &#8211; largeur 5m &#8211; hauteur 3m<\/p>\n<p>Caract\u00e9ristiques\u00a0: Chambre acoustique de classe 1 (laboratoire) suivant la norme ISO 3745. Fr\u00e9quence de coupure 175Hz pour des mesures en moyennes et hautes fr\u00e9quences 250Hz \u00e0 8KHz avec un bruit de fond &lt;15dBA.<\/p>\n<p>Destination de la salle :<\/p>\n<ul>\n<li>Calibration de certains instruments de mesures (sources sonores omnidirectionnelles, antennes, sources US)<\/li>\n<li>Mesures de r\u00e9ponse impulsionnelle, de directivit\u00e9, de sources sonores<\/li>\n<li>Hall d\u2019essais pour les cas test de validation de logiciels de calculs, de configurations d\u2019essais\u2026<\/li>\n<\/ul>\n<h3>Conception et r\u00e9alisation de dB Vib<\/h3>\n<h4>Structure de la salle<\/h4>\n<p>dB Vib a con\u00e7u une structure primaire autoportante en profil\u00e9 acier, galvanis\u00e9e \u00e0 chaud, dimensionn\u00e9e pour reprendre les charges statiques du reste de l\u2019installation et fix\u00e9e au sol b\u00e9ton avec une plaque de r\u00e9siliant phonique pour assurer le d\u00e9couplage vibratoire.<\/p>\n<p>Pour assurer l\u2019isolation phonique de la salle, cette structure primaire a \u00e9t\u00e9 doubl\u00e9e d\u2019un parement sur les murs et le plafond :<\/p>\n<p>&#8211; Plaques de pl\u00e2tre tr\u00e8s haute performance acoustique pour une \u00e9paisseur totale de 50mm.<\/p>\n<p>&#8211; Panneaux de laine min\u00e9rale \u00e9paisseur 100mm.<\/p>\n<p>&nbsp;<\/p>\n<h4>Choix des di\u00e8dres<\/h4>\n<p>Apr\u00e8s une multitude de tests r\u00e9alis\u00e9s par dB Vib ing\u00e9nierie (performances acoustiques, tenue\u2026) et, accompagn\u00e9 des experts acousticiens dB Vib consulting pour r\u00e9pondre aux enjeux environnementaux, nous avons choisi des di\u00e8dres en laine de polyester blanche : une fibre 100% polyester issue du recyclage de bouteilles plastique. Ce mat\u00e9riau fibreux pr\u00e9sente une forte t\u00e9nacit\u00e9. Il est hydrophobe et imputrescible. En plus de ces performances acoustiques et de durabilit\u00e9, c\u2019est un produit sain, non irritant et non toxique. Cette derni\u00e8re qualit\u00e9 n\u2019est pas n\u00e9gligeable pour les monteurs de dB Vib.<\/p>\n<p>&nbsp;<\/p>\n<p><img decoding=\"async\" class=\" wp-image-4289 aligncenter\" src=\"https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/Capture-decran-2022-10-05-100046.png\" alt=\"Salle an\u00e9cho\u00efque\" width=\"466\" height=\"270\" srcset=\"https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/Capture-decran-2022-10-05-100046.png 414w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/Capture-decran-2022-10-05-100046-300x174.png 300w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/Capture-decran-2022-10-05-100046-200x116.png 200w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/Capture-decran-2022-10-05-100046-315x183.png 315w\" sizes=\"(max-width: 466px) 100vw, 466px\" \/><\/p>\n<h4>Le Plancher :<\/h4>\n<p>Pour le plancher, dB Vib a r\u00e9alis\u00e9 une structure de 6 solives IPE100 en acier galvanis\u00e9 fix\u00e9e sur les remont\u00e9es de la fosse b\u00e9ton. Des poteaux au centre de chaque solive renforcent la structure. Sur cette structure, dB Vib est venu fixer des dalles caillebotis en acier galvanis\u00e9 de 1m X 1m.<\/p>\n<p>Le dimensionnement de ce plancher a fait l\u2019objet de calculs par les ing\u00e9nieurs de dB Vib pour une charge d\u2019exploitation de 400 daN\/m\u00b2 repartie sur toute la surface.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-4291\" src=\"https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/graphique-pour-plancher.png\" alt=\"Mod\u00e9lisation plancher\" width=\"418\" height=\"265\" srcset=\"https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/graphique-pour-plancher.png 418w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/graphique-pour-plancher-300x190.png 300w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/graphique-pour-plancher-200x127.png 200w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/graphique-pour-plancher-315x200.png 315w\" sizes=\"(max-width: 418px) 100vw, 418px\" \/>\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 <img decoding=\"async\" class=\"alignnone wp-image-4293\" src=\"https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/decouplage-sous-poids-propre-du-plancher.png\" alt=\"D\u00e9couplage sous poids propre du plancher\" width=\"564\" height=\"271\" srcset=\"https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/decouplage-sous-poids-propre-du-plancher.png 863w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/decouplage-sous-poids-propre-du-plancher-300x144.png 300w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/decouplage-sous-poids-propre-du-plancher-768x369.png 768w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/decouplage-sous-poids-propre-du-plancher-440x212.png 440w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/decouplage-sous-poids-propre-du-plancher-200x96.png 200w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/decouplage-sous-poids-propre-du-plancher-315x151.png 315w\" sizes=\"(max-width: 564px) 100vw, 564px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>Le d\u00e9couplage vibratoire du plancher est assur\u00e9 par des plots de solymer.<\/p>\n<p>&nbsp;<\/p>\n<h4>Portes et acc\u00e8s<\/h4>\n<p>La porte d\u2019acc\u00e8s au local a \u00e9t\u00e9 remplac\u00e9e par une porte acoustique en acier avec une performance d\u2019isolation &gt;50dB.<\/p>\n<p>Pour acc\u00e9der \u00e0 la salle dB Vib a con\u00e7u un basket door \u00e0 2 vantaux in\u00e9gaux sur pivot pour \u00eatre manipulable par une seule personne.<\/p>\n<p><img decoding=\"async\" class=\" wp-image-4295 aligncenter\" src=\"https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/Capture-decran-2022-10-05-100233.png\" alt=\"Basket door \u00e0 2 vantaux in\u00e9gaux\" width=\"588\" height=\"556\" srcset=\"https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/Capture-decran-2022-10-05-100233.png 832w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/Capture-decran-2022-10-05-100233-300x284.png 300w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/Capture-decran-2022-10-05-100233-768x726.png 768w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/Capture-decran-2022-10-05-100233-440x416.png 440w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/Capture-decran-2022-10-05-100233-200x189.png 200w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/Capture-decran-2022-10-05-100233-315x298.png 315w\" sizes=\"(max-width: 588px) 100vw, 588px\" \/><\/p>\n<h4>Les servitudes<\/h4>\n<p>Pour chaque travers\u00e9e de parois, passage de c\u00e2bles, dB Vib a install\u00e9 des modules sp\u00e9cialement con\u00e7us pour leur \u00e9tanch\u00e9it\u00e9 acoustique.<\/p>\n<p><img decoding=\"async\" class=\"wp-image-4297 aligncenter\" src=\"https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/Capture-decran-2022-10-05-095749.png\" alt=\"Module \u00e9tanche acoustiquement \" width=\"222\" height=\"228\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>Pour assurer la ventilation et maintenir une tr\u00e8s bonne r\u00e9partition des flux d\u2019air et une vitesse d\u2019\u00e9coulement faible dB Vib a mis en place des blocs d\u2019angle de ventilation dans chaque angle de la salle et sur toute sa hauteur. Les avantages de ces blocs d\u2019angle de ventilation sont, leur modularit\u00e9 et le fait qu\u2019ils constituent un pi\u00e8ge \u00e0 sons sur toute la hauteur de la salle inhibant ainsi les bruits de circulation d\u2019air.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<h2>Salle calme<\/h2>\n<p>Dimensions\u00a0utiles: longueur 5.0m largeur 4.5m hauteur 2.3m<\/p>\n<p>Caract\u00e9ristiques\u00a0: Chambre acoustique de classe 2 (expertise) suivant la norme ISO 3744.<br \/>\nCoefficient d\u2019absorption \u03b1 s \u2265 0.95 \u00e0 partir de 250 Hz. Bruit de fond &lt;15dBA<\/p>\n<p>Destination\u00a0: salle calme pour l\u2019\u00e9coute au casque<\/p>\n<p>&nbsp;<\/p>\n<h3>Traitement du plafond<\/h3>\n<p>Le local existant comportait une ventilation qui a \u00e9t\u00e9 retir\u00e9e pour assurer l\u2019isolement acoustique. dB Vib a d\u00fb poser des bouchons acoustiques dans les ouvertures laiss\u00e9es par les gaines de ventilation.<\/p>\n<p>Ensuite le plafond a \u00e9t\u00e9 recouvert d\u2019une double couche de plaques de pl\u00e2tre tr\u00e8s haute performance acoustique puis de panneaux de laine polyester.<\/p>\n<p>&nbsp;<\/p>\n<h3>Traitement des murs<\/h3>\n<p>Les murs ont \u00e9t\u00e9 par\u00e9s de panneaux polyester issus du recyclage de bouteilles plastiques pr\u00e9sentant eux aussi une forte t\u00e9nacit\u00e9. Ils sont hydrophobes, imputrescibles, non irritants, non toxiques et sans allerg\u00e8nes.<\/p>\n<p>Une nouvelle r\u00e9alisation qui s\u2019ajoute aux nombreuses r\u00e9f\u00e9rences de dB Vib dans le domaine de l\u2019ing\u00e9nierie.<\/p>\n<p>&nbsp;<\/p>\n<h3>Les servitudes<\/h3>\n<p>Pour les travers\u00e9es de parois, dB Vib a utilis\u00e9 les m\u00eames syst\u00e8mes que pour la salle an\u00e9cho\u00efque.<\/p>\n<p>&nbsp;<\/p>\n<h2>Montage<\/h2>\n<p>L\u2019\u00e9quipe de monteurs dB Vib a d\u00fb faire preuve d\u2019une grande rigueur et minutie pour l\u2019installation des di\u00e8dres de laine polyester afin d\u2019en assurer l\u2019ajustement le plus pr\u00e9cis possible pour assurer l\u2019harmonie esth\u00e9tique de l\u2019ensemble sans alt\u00e9rer les performances acoustiques. Di\u00e8dres et panneaux de laine polyester blancs leur ont \u00e9galement demand\u00e9 une grande rigueur de propret\u00e9.<\/p>\n<p>&nbsp;<\/p>\n<h2>Mesures de r\u00e9ception des salles<\/h2>\n<p>Les mesures de r\u00e9ception des deux salles ont \u00e9t\u00e9 confi\u00e9es aux experts acoustiques de <a href=\"https:\/\/dbvib-consulting.com\/mesures-de-reception-acoustiques\/\">dB Vib Consulting<\/a>.<\/p>\n<p>Les experts acousticiens s\u2019appuient sur la norme ISO3745 pour effectuer et analyser les mesures. Les deux salles respectaient les performances attendues.<\/p>\n<p>Salle an\u00e9cho\u00efque :<\/p>\n<p><img decoding=\"async\" class=\" wp-image-4299 aligncenter\" src=\"https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/IMG_3663-1024x768.jpg\" alt=\"Salle an\u00e9cho\u00efque\" width=\"804\" height=\"603\" srcset=\"https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/IMG_3663-1024x768.jpg 1024w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/IMG_3663-300x225.jpg 300w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/IMG_3663-768x576.jpg 768w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/IMG_3663-1536x1152.jpg 1536w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/IMG_3663-2048x1536.jpg 2048w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/IMG_3663-1920x1440.jpg 1920w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/IMG_3663-900x675.jpg 900w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/IMG_3663-440x330.jpg 440w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/IMG_3663-200x150.jpg 200w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/IMG_3663-315x236.jpg 315w\" sizes=\"(max-width: 804px) 100vw, 804px\" \/><\/p>\n<p>Salle calme :<\/p>\n<p><img decoding=\"async\" class=\"wp-image-4301 aligncenter\" src=\"https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/IMG_3677-1024x768.jpg\" alt=\"Salle calme\" width=\"807\" height=\"605\" srcset=\"https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/IMG_3677-1024x768.jpg 1024w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/IMG_3677-300x225.jpg 300w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/IMG_3677-768x576.jpg 768w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/IMG_3677-1536x1152.jpg 1536w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/IMG_3677-2048x1536.jpg 2048w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/IMG_3677-1920x1440.jpg 1920w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/IMG_3677-900x675.jpg 900w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/IMG_3677-440x330.jpg 440w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/IMG_3677-200x150.jpg 200w, https:\/\/dbvib-ingenierie.com\/uploads\/sites\/2\/2023\/03\/IMG_3677-315x236.jpg 315w\" sizes=\"(max-width: 807px) 100vw, 807px\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>L&#8217;Institut National de Recherche et S\u00e9curit\u00e9 de Vand\u0153uvre-l\u00e8s-Nancy, lors de la r\u00e9novation de son b\u00e2timent accueillant les activit\u00e9s de recherche du d\u00e9partement ing\u00e9nierie des \u00e9quipements de travail a confi\u00e9 \u00e0 dB Vib la r\u00e9alisation d&#8217;une salle an\u00e9cho\u00efque et d&#8217;une salle calme. Salle an\u00e9cho\u00efque Dimensions : 6,2m longueur &#8211; largeur 5m &#8211; hauteur 3m Caract\u00e9ristiques\u00a0: Chambre [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":4299,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[3],"tags":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Salle an\u00e9cho\u00efque &amp; salle calme pour l&#039;INRS - dB Vib Ing\u00e9nierie<\/title>\n<meta name=\"description\" content=\"L&#039;INRS a confi\u00e9 \u00e0 dB Vib le projet de cr\u00e9er une salle an\u00e9cho\u00efque et une salle calme lors de la r\u00e9novation de leur b\u00e2timent.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/dbvib-ingenierie.com\/realisation-dun-salle-anechoique-et-dune-salle-calme-pour-linrs\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Salle an\u00e9cho\u00efque &amp; 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