{"id":5138,"date":"2020-06-05T15:13:53","date_gmt":"2020-06-05T13:13:53","guid":{"rendered":"https:\/\/www.ecoshape.org\/en\/projects\/sand-nourishment-hondsbossche-dunes-nl\/construction\/"},"modified":"2020-10-19T16:33:16","modified_gmt":"2020-10-19T14:33:16","slug":"construction","status":"publish","type":"project","link":"https:\/\/www.ecoshape.org\/en\/cases\/sand-nourishment-hondsbossche-dunes-nl\/construction\/","title":{"rendered":"Construction"},"content":{"rendered":"\n<p>The construction works started with foreshore nourishment using medium size Trailing Suction Hopper Dredgers (TSHD), followed by beach and dune nourishment with jumbo size hoppers.&nbsp;Sand was taken from several offshore borrow areas with varying water depth between 20-28 m and sailing distance between 6 and 11 nautical miles to the project site. By April 2015 all the sand was in place, and the coastal section was officially declared \u2018Up to safety standard\u2019 by the Dutch minister of Public Works.<\/p>\n\n\n\n<figure class=\"wp-block-image is-style-default\"><img decoding=\"async\" src=\"https:\/\/www.ecoshape.org\/app\/uploads\/sites\/2\/2020\/05\/foreshore-nourishment.png\" alt=\"\" \/><figcaption>Foreshore nourishment<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image is-style-default\"><img decoding=\"async\" src=\"https:\/\/www.ecoshape.org\/app\/uploads\/sites\/2\/2020\/05\/beach-nourishment.png\" alt=\"\" \/><figcaption>Beach nourishment  (image start of 2015)<\/figcaption><\/figure>\n\n\n\n<p>The Weak Links project consists of the design, construction and 20 years maintenance of the new coastal protection between Camperduin and Petten. The area has a total coastal length of ~11km. The main objective of the construction was the installation of ~35 million m<sup>3<\/sup>&nbsp;of sand. Most of this volume was needed to create a new dune and beach system that fulfils modern safety standards. Approximately 30% was needed to compensate for settlements,hydraulic and aeolian sand losses and a smooth connection to the adjacent shorelines. Additionally, the dune area was partially planted with marram grass, and amongst others a bicycle path, walking path and other recreational objects were constructed.&nbsp;The nourishment works started on March 3, 2014.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image is-style-default\"><img decoding=\"async\" src=\"https:\/\/www.ecoshape.org\/app\/uploads\/sites\/2\/2020\/05\/image2018-12-20-16464.png\" alt=\"\" \/><figcaption>Foreshore nourishment was placed by means of \u2018rainbowing\u2019\u00a0by medium TSHD<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image is-style-default\"><img decoding=\"async\" src=\"https:\/\/www.ecoshape.org\/app\/uploads\/sites\/2\/2020\/05\/image2018-12-20-16469.png\" alt=\"\" \/><figcaption>The sand for beaches and dunes were discharged to site with a sinker-line<em>\u00a0<\/em><\/figcaption><\/figure>\n\n\n\n<p>The Hondsbossche Dunes were constructed from Camperduin (south) to Petten (north), following the dominant northern sediment transport direction. The picture below shows the location of the bulldozers and shovels, the hydrodynamic excavator and the dredging ships (hoppers) during the construction works.<\/p>\n\n\n\n<figure class=\"wp-block-image is-style-default\"><img decoding=\"async\" src=\"https:\/\/www.ecoshape.org\/app\/uploads\/sites\/2\/2020\/05\/construction.png\" alt=\"Top view and cross section during construction of the Hondsbossche Dunes\" title=\"Top view and cross section during construction of the Hondsbossche Dunes\" \/><figcaption>Top view and cross section during construction of the Hondsbossche Dunes<\/figcaption><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p><em>In English: foreshore (vooroever), pour front (stortfront), beach and dune (strand en duin), existing HPZ (bestaande HPZ)<\/em><\/p>\n\n\n\n<p><em>bestaande situatie (existing situation), pour set (stortset), hydraulic excavator (hydr. graafmachine), trailing suction hopper dredger (sleephopperzuiger)<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The construction works started with foreshore nourishment using medium size Trailing Suction Hopper Dredgers (TSHD), followed by beach and dune nourishment with jumbo size hoppers.&nbsp;Sand was taken from several offshore borrow areas with varying water depth between 20-28 m and sailing distance between 6 and 11 nautical miles to the project site. By April 2015 [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":3422,"menu_order":30,"template":"","landscape":[],"technology-readiness_-level":[],"class_list":["post-5138","project","type-project","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.4 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Construction - EcoShape<\/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:\/\/www.ecoshape.org\/en\/cases\/sand-nourishment-hondsbossche-dunes-nl\/construction\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Construction\" \/>\n<meta property=\"og:description\" content=\"The construction works started with foreshore nourishment using medium size Trailing Suction Hopper Dredgers (TSHD), followed by beach and dune nourishment with jumbo size hoppers.&nbsp;Sand was taken from several offshore borrow areas with varying water depth between 20-28 m and sailing distance between 6 and 11 nautical miles to the project site. 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