{"id":89893,"date":"2023-06-02T09:06:40","date_gmt":"2023-06-02T07:06:40","guid":{"rendered":"https:\/\/ddgro.eu\/faq\/faut-il-toujours-utiliser-un-plot-de-terrasse-au-centre-de-la-dalle\/"},"modified":"2024-06-21T17:00:44","modified_gmt":"2024-06-21T15:00:44","slug":"plot-de-terrasse-au-centre-de-la-dalle","status":"publish","type":"faq","link":"https:\/\/ddgro.eu\/fr\/faq\/plot-de-terrasse-au-centre-de-la-dalle\/","title":{"rendered":"Faut-il toujours utiliser un plot de terrasse au centre de la dalle ?"},"content":{"rendered":"\n

Tout d'abord, il est essentiel de se r\u00e9f\u00e9rer aux recommandations du fabricant des dalles concernant leur pose sur les plots de terrasse. Une installation non conforme aux instructions du fabricant peut entra\u00eener la perte de la garantie.<\/p>\n\n\n\n

Nous ne connaissons pas d'\u00e9tudes ou de recherches scientifiques confirmant sans ambigu\u00eft\u00e9 la n\u00e9cessit\u00e9 d'ajouter un cinqui\u00e8me plot au centre sous la dalle comme mesure suppl\u00e9mentaire de protection contre les fissures. Selon nos analyses et notre exp\u00e9rience, l'ajout d'un plot doit \u00eatre envisag\u00e9 au cas par cas, en fonction du type de dalle, du substrat sous la terrasse et de l'utilisation pr\u00e9vue de la terrasse. Les recommandations peuvent varier, il est important de consid\u00e9rer plusieurs points avant de prendre une d\u00e9cision :<\/p>\n\n\n\n

R\u00e9sistance de la dalle et du mat\u00e9riau dont elle est faite<\/strong><\/p>\n\n\n\n

Les dalles utilis\u00e9es sur des plots peuvent \u00eatre fabriqu\u00e9es \u00e0 partir de divers mat\u00e9riaux tels que la c\u00e9ramique, la pierre, le b\u00e9ton (press\u00e9, vibr\u00e9, arm\u00e9). Chacun de ces mat\u00e9riaux a des propri\u00e9t\u00e9s diff\u00e9rentes, et les fabricants utilisent diff\u00e9rentes technologies de production. Pour la pose de dalles sur des plots, nous recommandons d'utiliser uniquement des dalles de la plus haute qualit\u00e9 provenant de fabricants r\u00e9put\u00e9s qui pr\u00e9voient un support ponctuel.<\/p>\n\n\n\n

Duret\u00e9 du substrat<\/strong><\/p>\n\n\n\n

Les terrasses ventil\u00e9es sur plots peuvent \u00eatre install\u00e9es sur diff\u00e9rents types de substrats. Cela peut \u00eatre des substrats durs, tels que des dalles de b\u00e9ton, des plaques de b\u00e9ton, etc., et des substrats mous, tels que des plaques de polystyr\u00e8ne extrud\u00e9, des plaques de toiture PIR, etc. Il est important de rappeler que la duret\u00e9 appropri\u00e9e du substrat, recommand\u00e9e \u00e0 un niveau de 300 kPa\/m\u00b2, et le minimum acceptable \u00e0 200 kPa\/m\u00b2, influence la capacit\u00e9 de la terrasse \u00e0 fl\u00e9chir pendant l'utilisation. Un plot suppl\u00e9mentaire peut aider \u00e0 r\u00e9partir la charge de la terrasse sur une plus grande surface.<\/p>\n\n\n\n

Charge de la terrasse<\/strong><\/p>\n\n\n\n

Lors de la d\u00e9termination du nombre de plots n\u00e9cessaires sous une dalle de terrasse, il est n\u00e9cessaire d'analyser les charges pr\u00e9vues sur la terrasse et de calculer la charge totale par m\u00e8tre carr\u00e9 de la terrasse. Sur la base des calculs effectu\u00e9s, il peut \u00eatre d\u00e9termin\u00e9 si l'utilisation d'un plot suppl\u00e9mentaire au centre de la dalle de terrasse est recommand\u00e9e. Voir la question - Quelle est la r\u00e9sistance des plots ?<\/p>\n\n\n\n

Si un plot suppl\u00e9mentaire est utilis\u00e9 au centre sous la dalle de terrasse, nous recommandons d'utiliser des plots avec une t\u00eate autonivelante pour assurer un support id\u00e9al de la dalle gr\u00e2ce \u00e0 toute la surface de la t\u00eate sup\u00e9rieure du plot.<\/p>\n\n\n\n

Pour plus d'informations, voir l'article- <\/span>5 r\u00e8gles importantes pour \u00e9viter la fissuration des plaques reposant sur des plots r\u00e9glable.<\/span><\/a><\/p>\n\n\n

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Besoin de plots de terrasse r\u00e9glables pour les dalles sur terrasses ventil\u00e9es<\/em><\/figcaption><\/figure><\/div>","protected":false},"featured_media":113413,"template":"","meta":{"_acf_changed":false},"faq_cat":[725],"acf":[],"yoast_head":"\nPlot de Terrasse au Centre de la Dalle | DD Group<\/title>\n<meta name=\"description\" content=\"D\u00e9couvrez comment installer un plot de terrasse au centre de la dalle pour une stabilit\u00e9 optimale. 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