{"id":6311,"date":"2023-07-19T12:10:28","date_gmt":"2023-07-19T11:10:28","guid":{"rendered":"https:\/\/www.devon.gov.uk\/workingfordevon\/?post_type=dcc_docs_document&#038;p=6311"},"modified":"2023-08-07T13:28:16","modified_gmt":"2023-08-07T12:28:16","slug":"scheme-name-b3227-black-cat-retaining-wall-engineering-projects","status":"publish","type":"dcc_docs_document","link":"https:\/\/www.devon.gov.uk\/workingfordevon\/document\/scheme-name-b3227-black-cat-retaining-wall-engineering-projects\/","title":{"rendered":"Scheme name: B3227 Black Cat Retaining Wall &#8211; Engineering Projects"},"content":{"rendered":"\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:25%\">\n<div class=\"wp-block-rank-math-toc-block\"><h2>Contents<\/h2><nav><ul><\/ul><\/nav><\/div>\n\n\n\t<div class=\"dcc-documents-cpt-fixed dccdocs-sticky dccdocs-hidden\">\r\n    <div class=\"grid-container\">\r\n        <div class=\"grid-x grid-margin-x\">\r\n            <div class=\"cell medium-12\">\r\n                <a class=\"back-to-top hide-for-print\" href=\"#content\"><svg class=\"app-c-back-to-top__icon\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"13\" height=\"17\" viewBox=\"0 0 13 17\"><path fill=\"currentColor\" d=\"M6.5 0L0 6.5 1.4 8l4-4v12.7h2V4l4.3 4L13 6.4z\"><\/path><\/svg> Contents<\/a>\r\n            <\/div>\r\n        <\/div>\r\n    <\/div>\r\n\t<\/div>\r\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:75%\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:41.333%\"><div class=\"document-meta-acf-block clearfix \" id=\"block_ad91682880d0913c3ca6ac69e4d07cfd\"><div class=\" dcc-documents-meta\"><div class=\"dcc-documents-widget dcc-documents-widget-block\"><div class=\"dcc-documents-widget-box2\"><p class=\"dcc-documents-published\"><span>Published<\/span> <time datetime=\"2023-07-19T12:10:28+00:00\">19\/07\/2023 12:10pm<\/time><\/p><p class=\"dcc-documents-updated\"><span>Last Updated<\/span> <time datetime=\"2023-08-07T13:28:16+00:00\">07\/08\/2023 1:28pm<\/time><\/p><\/div><\/div><\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:58.666%\"><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<h2 class=\"wp-block-heading\" id=\"background\">Background<\/h2>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"http:\/\/www.devon.gov.uk\/workingfordevon\/wp-content\/uploads\/sites\/130\/2023\/07\/Black-Cat-Engineering-photo-300x219.jpg\" alt=\"Image showing a new stretch of road with re-designed safety barrier.\" class=\"wp-image-6346\"\/><\/figure>\n\n\n\n<p>Design\/ Check: DCC Engineering Design Group (EDG)<\/p>\n\n\n\n<p>Contract: NEC 3 Option B<\/p>\n\n\n\n<p>Project Management\/ Supervision: EDG<\/p>\n\n\n\n<p>Works Duration: 8 months (2 phases of 4 months)<\/p>\n\n\n\n<p>Year completed: 2015<\/p>\n\n\n\n<p>Works value: \u00a3670,000<\/p>\n\n\n\n<p>Location: B3227 Black Cat, Bampton<\/p>\n\n\n\n<p>A 360m long section of the B3227 is cut into a very steep hillside, the existing road was supported on a combination of<br>steep ground, drystone walls and gabion retaining walls. The road support was experiencing landslips and failing old<br>structures, with sections of the road suffering from collapse.<br>A new retaining wall scheme was required to address the stability issues and provide a new and compliant road safety<br>barrier to protect the steep drop to the A396 below.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"what-were-the-options\">What were the options?<\/h2>\n\n\n\n<p>Various forms of retaining walls including reinforced concrete cantilever walls, mass concrete walls and anchored piled<br>walls were considered. However, due to the considerable length of works a solution that was relatively quick to construct<br>and cost effective was required.<\/p>\n\n\n\n<p>A mass concrete retaining wall formed from bespoke precast units and insitu concrete was adopted. The precast units<br>were designed to be stacked and infilled, these were cast offsite. The use of precast units removed the need for complex<br>edge shuttering and support, the precast units were designed to allow scaffolding to be supported directly from them,<br>negating support from the steep hillside.<\/p>\n\n\n\n<p>The retaining wall varied from 3.0 to 4.0m in height and due to the shape of the precast units the curved nature of the road<br>could be easily accommodated.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"who-was-involved\">Who was involved?<\/h2>\n\n\n\n<p>An Engineer and a Technician from one of DCC\u2019s EDG bridges and structures design teams undertook the project<br>management, design, detailing, procurement and site supervision.<\/p>\n<\/div><\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Background Design\/ Check: DCC Engineering Design Group (EDG) Contract: NEC 3 Option B Project Management\/ Supervision: EDG Works Duration: 8 months (2 phases of 4 months) Year completed: 2015 Works value: \u00a3670,000 Location: B3227 Black Cat, Bampton A 360m long section of the B3227 is cut into a very steep hillside, the existing road was [&hellip;]<\/p>\n","protected":false},"author":2483,"template":"","meta":{"_acf_changed":false,"_links_to":"","_links_to_target":""},"documents_category":[],"class_list":["post-6311","dcc_docs_document","type-dcc_docs_document","status-publish","hentry"],"acf":{"updated":"","dccdocs_documents":null,"section-guidance":"","sections":null},"publishpress_future_workflow_manual_trigger":{"enabledWorkflows":[]},"_links":{"self":[{"href":"https:\/\/www.devon.gov.uk\/workingfordevon\/wp-json\/wp\/v2\/documents\/6311","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.devon.gov.uk\/workingfordevon\/wp-json\/wp\/v2\/documents"}],"about":[{"href":"https:\/\/www.devon.gov.uk\/workingfordevon\/wp-json\/wp\/v2\/types\/dcc_docs_document"}],"author":[{"embeddable":true,"href":"https:\/\/www.devon.gov.uk\/workingfordevon\/wp-json\/wp\/v2\/users\/2483"}],"version-history":[{"count":5,"href":"https:\/\/www.devon.gov.uk\/workingfordevon\/wp-json\/wp\/v2\/documents\/6311\/revisions"}],"predecessor-version":[{"id":6561,"href":"https:\/\/www.devon.gov.uk\/workingfordevon\/wp-json\/wp\/v2\/documents\/6311\/revisions\/6561"}],"wp:attachment":[{"href":"https:\/\/www.devon.gov.uk\/workingfordevon\/wp-json\/wp\/v2\/media?parent=6311"}],"wp:term":[{"taxonomy":"dcc_docs_category","embeddable":true,"href":"https:\/\/www.devon.gov.uk\/workingfordevon\/wp-json\/wp\/v2\/documents_category?post=6311"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}