{"id":3417,"date":"2020-08-06T09:58:51","date_gmt":"2020-08-06T09:58:51","guid":{"rendered":"http:\/\/proserveltd.co.uk\/?post_type=resource&p=3417"},"modified":"2020-08-06T10:00:12","modified_gmt":"2020-08-06T10:00:12","slug":"berth-scour-protection-for-single-and-twin-propellers","status":"publish","type":"resource","link":"https:\/\/proserveltd.co.uk\/resource\/berth-scour-protection-for-single-and-twin-propellers\/","title":{"rendered":"Berth Scour Protection for Single and Twin Propellers"},"content":{"rendered":"

Quay structures can be reduced by design using thinner scour protection. The performance of thinner protections as \u2018Sealed\u2019 or \u2018Open\u2019 to flow entry is described.<\/p>\n

Established design methods for insitu concrete mattress and rock protections under single propeller action are reviewed. These methods are extended to twin propeller action based upon scale model testing undertaken. Comparison is made to current guidance by PIANC (2015) and PIANC (1997).<\/p>\n

Vessels with twin propellers are outlined along with design implications for berths.<\/p>\n","protected":false},"featured_media":2814,"template":"","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"","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":"","theme-transparent-header-meta":"default","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":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","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-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-gradient":""}},"ast-content-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-gradient":""},"tablet":{"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-gradient":""},"mobile":{"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-gradient":""}}},"ressource_categories":[80,104,82],"resource_sub_categories":[86],"acf":[],"yoast_head":"\nBerth Scour Protection for Single and Twin Propellers - Proserve<\/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:\/\/proserveltd.co.uk\/resource\/berth-scour-protection-for-single-and-twin-propellers\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Berth Scour Protection for Single and Twin Propellers - Proserve\" \/>\n<meta property=\"og:description\" content=\"Quay structures can be reduced by design using thinner scour protection. The performance of thinner protections as \u2018Sealed\u2019 or \u2018Open\u2019 to flow entry is described. Established design methods for insitu concrete mattress and rock protections under single propeller action are reviewed. These methods are extended to twin propeller action based upon scale model testing undertaken. 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