{"id":1131,"date":"2013-08-05T22:43:03","date_gmt":"2013-08-05T21:43:03","guid":{"rendered":"http:\/\/mdemierre.speleologie.ch\/?p=1131"},"modified":"2013-08-06T23:56:29","modified_gmt":"2013-08-06T22:56:29","slug":"noeuds-pour-les-mains-courantes","status":"publish","type":"post","link":"https:\/\/www.techt.ch\/mdemierre\/?p=1131","title":{"rendered":"Vires et mains courantes"},"content":{"rendered":"<p>Lorsqu&rsquo;il y a un risque de chute en progression horizontale, une corde fixe, appel\u00e9e main courante (pour s&rsquo;assurer) ou vire (progression pendu sur la corde) permet de franchir l&rsquo;obstacle s\u00e9curit\u00e9 en utilisant ses longes. La corde doit \u00eatre install\u00e9e assez haut, entre les \u00e9paules et la taille, et doit \u00eatre bien tendue.<\/p>\n<p>Pour le confort de la progression sur une vire, les amarrages ne doivent pas \u00eatre trop espac\u00e9s et la corde si possible horizontale afin de la franchir facilement \u00e0 l&rsquo;aller et au retour.\u00a0Il faut aussi profiter des margelles et autres prises pour les pieds afin de faciliter le passage des amarrages interm\u00e9diaires. Une vire bien pos\u00e9e se passe ais\u00e9ment. Ouf !<\/p>\n<p>Les extr\u00e9mit\u00e9s de ses cordes fixes doivent \u00eatre amarr\u00e9es avec les n\u0153uds usuels, comme . Ces amarrages doivent absolument \u00eatre doubl\u00e9s <span style=\"text-decoration: underline;\"><span style=\"color: #3366ff;\"><a title=\"N\u0153ud en huit\" href=\"http:\/\/mdemierre.speleologie.ch\/?p=821\"><span style=\"color: #3366ff; text-decoration: underline;\">le n\u0153ud en huit double et le Mickey<\/span><\/a><\/span><\/span> (amarrage irr\u00e9prochable), comme pour <span style=\"text-decoration: underline; color: #3366ff;\"><a title=\"Equipement d\u2019un puits\" href=\"http:\/\/mdemierre.speleologie.ch\/?p=233\"><span style=\"color: #3366ff; text-decoration: underline;\">l&rsquo;\u00e9quipement d&rsquo;un puits<\/span><\/a><\/span>.<\/p>\n<p>Pour les n\u0153uds interm\u00e9diaires, il faut choisir le <span style=\"text-decoration: underline; color: #3366ff;\"><a title=\"n\u0153ud et demi-n\u0153ud d\u2019amarre\" href=\"http:\/\/mdemierre.speleologie.ch\/?p=779\" target=\"_blank\"><span style=\"color: #3366ff; text-decoration: underline;\">n\u0153ud d&rsquo;amarre (cabestan)<\/span><\/a><\/span> si la corde doit \u00eatre bien tendue. Une main courante ou une vire mal tendue et difficile \u00e0 franchir et de plus s&rsquo;av\u00e8re dangereuse (!).\u00a0Dans les autres cas, le <span style=\"text-decoration: underline;\"><span style=\"color: #3366ff;\"><a title=\"N\u0153ud en huit\" href=\"http:\/\/mdemierre.speleologie.ch\/?p=821\"><span style=\"color: #3366ff; text-decoration: underline;\">le n\u0153ud en huit double<\/span><\/a><\/span><\/span> ou pour les puristes le <span style=\"text-decoration: underline;\"><span style=\"color: #3366ff;\"><a title=\"noeud papillon\" href=\"http:\/\/mdemierre.speleologie.ch\/?p=928\" target=\"_blank\"><span style=\"color: #3366ff; text-decoration: underline;\">noeud papillon<\/span><\/a><\/span><\/span> sont a utiliser.<\/p>\n<p>Pour l&rsquo;\u00e9quipement, il faut en g\u00e9n\u00e9ral s&rsquo;assurer en utilisant son bloqueur de poing au bout de la grande longe, avec obligatoirement le mousqueton de longe dans la corde. L&rsquo;utilisation du descendeur est aussi possible, en particulier si le passage \u00e0 \u00e9quiper est descendant.<\/p>\n<p>Trucs et astuces :<\/p>\n<ul>\n<li>Pour \u00e9viter que le contact avec le rocher ne puisse ouvrir le mousqueton de longe, il faut diriger le doigt du mousqueton vers soi, c&rsquo;est-\u00e0-dire avec le corps du mousqueton qui touche le rocher.<\/li>\n<li>Dans les passages acrobatiques et sans prise pour les pieds, l&rsquo;utilisation de la p\u00e9dale permet le franchissement des amarrages interm\u00e9diaires. La p\u00e9dale se fixe simplement dans l&rsquo;amarrage.<\/li>\n<li>Il est inutile de se longer dans les amarrages. Il suffit de se longer dans le segment suivant de la main courante ou de la vire.<\/li>\n<li>Attention, il ne faut en aucun cas utiliser uniquement un bloqueur pour s&rsquo;assurer sur une main courante ou une vire. Il faut aussi faire passer aussi le mousqueton de longe dans la corde <span style=\"text-decoration: underline;\"><span style=\"color: #3366ff;\"><a title=\"Remont\u00e9es obliques avec des bloqueurs\" href=\"http:\/\/mdemierre.speleologie.ch\/?p=240\"><span style=\"color: #3366ff; text-decoration: underline;\">comme pour une remont\u00e9e oblique<\/span><\/a><\/span><\/span>.<\/li>\n<li>Il peut s&rsquo;av\u00e9rer plus facile de franchir une vire avec deux longes de m\u00eame longueur. En faisant pass\u00e9 la longe longue dans le bloqueur ventral, il est possible de r\u00e9gler sa longueur.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Lorsqu&rsquo;il y a un risque de chute en progression horizontale, une corde fixe, appel\u00e9e main courante (pour s&rsquo;assurer) ou vire [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1185,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ngg_post_thumbnail":0,"footnotes":""},"categories":[2,4],"tags":[19,44],"class_list":["post-1131","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technique","category-technique-verticale-debutant","tag-speleologie-2","tag-technique-verticale"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.8 - aioseo.com -->\n\t<meta name=\"description\" content=\"Lorsqu&#039;il y a un risque de chute en progression horizontale, une corde fixe, appel\u00e9e main courante (pour s&#039;assurer) ou vire (progression pendu sur la corde) permet de franchir l&#039;obstacle s\u00e9curit\u00e9 en utilisant ses longes. 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