{"id":2251,"date":"2020-09-22T09:00:17","date_gmt":"2020-09-22T09:00:17","guid":{"rendered":"https:\/\/acusticsambient.com\/cultura-del-silenci-construccio-en-fusta\/"},"modified":"2021-03-22T09:47:28","modified_gmt":"2021-03-22T09:47:28","slug":"cultura-del-silenci-construccio-en-fusta","status":"publish","type":"post","link":"https:\/\/acusticsambient.com\/ca\/cultura-del-silenci-construccio-en-fusta\/","title":{"rendered":"Cultura del silenci, construcci\u00f3 en fusta"},"content":{"rendered":"

CONSTRUCCI\u00d3 EN FUSTA . CONFORT AC\u00daSTIC . BAIXA FREQ\u00dc\u00c8NCIA. VIBRACIONS.<\/strong><\/h3>\n

La construcci\u00f3 industrialitzada mitjan\u00e7ant fusta est\u00e0 agafant cada vegada m\u00e9s for\u00e7a en el mercat immobiliari. La fusta \u00e9s un material natural i renovable. Gr\u00e0cies a les metodologies de laminat, encolat i uni\u00f3 actuals les possibilitats que aporta la fusta s\u00f3n infinites.<\/p>\n

La tend\u00e8ncia ecol\u00f2gica, la cerca per materials i sistemes sostenibles de construcci\u00f3 s\u00f3n cada vegada m\u00e9s una prioritat en el disseny arquitect\u00f2nic. El sistema constructiu industrialitzat que ens aporta la construcci\u00f3 amb fusta laminada accelera el proc\u00e9s d\u2019aixecament d\u2019edificis simplificant enormement la seva execuci\u00f3 en obra.<\/p>\n

Els edificis de fusta ens permeten la industrialitzaci\u00f3 i d\u2019aquesta forma evitar part dels errors d\u2019execuci\u00f3 mes habituals generant-se fuites o ponts ac\u00fastics.<\/p>\n

Disposem d\u2019infinitat de solucions constructives per justificar l\u2019a\u00efllament ac\u00fastic establert pel permissiu i ja caduc CODIGO T\u00c9CNICO DE LA EDIFICACI\u00d3N. HR PROTECCI\u00d3N A RUIDO ara b\u00e9, el compliment de normativa no ens assegura el confort ac\u00fastic desitjat.<\/p>\n

Els valors entre els que es mesura l\u2019a\u00efllament d\u2019acord el CTE estan compresos entre les bandes de vuitena entre 100 Hz i 5kHz per tant no podem comparar els nivells mesurats entre els 50 Hz i els 3,5kHz d\u2019altres normatives molt mes exigents.<\/p>\n

\u00c9s evident que no podem comparar un DnT,w+C50-3150 <\/sub>amb valors DnT,w+C100-5000<\/sub>, considerem doncs necessari una harmonitzaci\u00f3 de criteris per poder preveure amb exactitud els nivells d\u2019a\u00efllament d\u2019una soluci\u00f3 constructiva certificada en d\u2019altres pa\u00efsos.<\/p>\n

De fet pa\u00efsos com ara Su\u00e8cia ja estudia com millorar l\u2019a\u00efllament de impacte i l\u2019efecte de pandeig dels forjats doncs \u00e9s conegut el fet que un caminar normal excita per sota ja d\u2019aquests 50 Hz.<\/p>\n

Els panells de CLT son ortotr\u00f2pics, per tant es comporten amb rigidesa diferents en cada una de les seves direccions, no es comporten ac\u00fasticament com d\u2019altres materials homogenis. Cada vegada coneixem millor el seu comportament i les seves possibilitats.<\/p>\n

La lleugeresa de les estructures de CLT suposa un important repte per aconseguir el confort ac\u00fastic sol\u00b7licitat per la societat. Esta ja prou documentat el fet que suposa que assolir els valors establerts per normativa no aporta aquests grau de confort.<\/p>\n

 <\/p>\n

\"\"

Taula1. Dades subjectives de la percepci\u00f3 a\u00efllament a impacte de usuaris d\u2019acord el The CLT Handbook . Swedish Wood.<\/p><\/div>\n

Doncs amb un a\u00efllament assolit de Lnt=65 dBA evident es perceben les passes al caminar, el caure objectes . En pa\u00efsos amb normatives molt m\u00e9s exigents i avan\u00e7ada tradici\u00f3 en edificaci\u00f3 en fusta s\u00f3n necessaris valors d\u2019a\u00efllament entorn a Lnt= 50 dBA per no escoltar un caminar r\u00e0pid o de Lnt= 40 dBA per evitar certs cops o caigudes d\u2019objectes.<\/p>\n

Ara b\u00e9, s\u00f3n suficients aquests par\u00e0metres passius d\u2019a\u00efllament?\u00a0 O \u00e9s necessari un an\u00e0lisi estructural amb detall per garantir una a\u00efllament i deflexi\u00f3 acceptables?<\/p>\n

Destaquem la iniciativa portada a terme per l\u2019 Institut Municipal de l\u2019Habitatge i Rehabilitaci\u00f3 de Barcelona on s\u2019incentiva mitjan\u00e7ant:<\/p>\n

La ponderaci\u00f3 de la puntuaci\u00f3 del millor confort ac\u00fastic per damunt de l\u2019establert en el CTE -HR:<\/p>\n

    \n
  • Increment de 2 dBA de l\u2019a\u00efllament ac\u00fastic de la fa\u00e7ana \u2026 2,5 punts.<\/li>\n
  • Increment de 5 dBA de l\u2019a\u00efllament ac\u00fastic a soroll aeri en els elements verticals i horitzontals de separaci\u00f3 entre habitatges i habitatges i altres usos \u2026 2,5 punts.<\/li>\n
  • Increment de 10 dBA de l\u2019a\u00efllament ac\u00fastic a soroll d\u2019impacte en elements horitzontals entre habitatges i habitatges i altres usos \u2026 2,5 punts.<\/li>\n<\/ul>\n

    Aquests nivells millorats estan comprovats en diferents promocions que son assolibles, ara b\u00e9 amb importants condicionants en la construcci\u00f3 en fusta:<\/p>\n

      \n
    • Cada vegada m\u00e9s ens hem d\u2019 oblidar dels grans finestrals amb tancaments lliscants, de fet en determinats empla\u00e7aments ser\u00e0 necessari la doble finestra.<\/li>\n
    • Les divis\u00f2ries entre diferents usuaris requereixen de solucions constructives desvinculades estructuralment, sistemes multicapa amb gruixos determinats.<\/li>\n
    • L\u2019a\u00efllament a impacte en construcci\u00f3 en fusta requereix de :<\/li>\n<\/ul>\n

      An\u00e0lisi de desvinculaci\u00f3 per flancs.<\/p>\n

      Aportaci\u00f3 d\u2019in\u00e8rcia a solucions constructives.<\/p>\n

      Determinats gruixos de CLT de partida i possiblement oblidar el poder deixar el CLT vist per la part inferior.<\/p>\n

       <\/p>\n

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

      CONSTRUCCI\u00d3 EN FUSTA . CONFORT AC\u00daSTIC . BAIXA FREQ\u00dc\u00c8NCIA. VIBRACIONS. La construcci\u00f3 industrialitzada mitjan\u00e7ant fusta est\u00e0 agafant cada vegada m\u00e9s for\u00e7a en el mercat immobiliari. La fusta \u00e9s un material natural i renovable. Gr\u00e0cies a les metodologies de laminat, encolat i uni\u00f3 actuals les possibilitats…<\/p>\n","protected":false},"author":2,"featured_media":1194,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[24],"tags":[42,43],"class_list":["post-2251","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualitat","tag-acondicionamiento-ca","tag-insonorizacion-ca"],"yoast_head":"\nCultura del silenci, construcci\u00f3 en fusta | Acustics Ambient<\/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:\/\/acusticsambient.com\/ca\/cultura-del-silenci-construccio-en-fusta\/\" \/>\n<meta property=\"og:locale\" content=\"ca_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Cultura del silenci, construcci\u00f3 en fusta | Acustics Ambient\" \/>\n<meta property=\"og:description\" content=\"CONSTRUCCI\u00d3 EN FUSTA . 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