{"id":3482,"date":"2016-09-29T15:42:42","date_gmt":"2016-09-29T02:42:42","guid":{"rendered":"https:\/\/builderscrack.co.nz\/blog\/?p=3482"},"modified":"2021-01-21T23:11:22","modified_gmt":"2021-01-21T10:11:22","slug":"retaining-walls-homeowners","status":"publish","type":"post","link":"https:\/\/builderscrack.co.nz\/blog\/project-advice\/advice-gardening\/retaining-walls-homeowners.html","title":{"rendered":"Retaining Walls 101 for Busy Homeowners and Future Developers"},"content":{"rendered":"<div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 fusion-flex-container nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:1148.16px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:0px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-1\"><p><a href=\"https:\/\/builderscrack.co.nz\/blog\/wp-content\/uploads\/2016\/09\/shutterstock_279343586.jpg\"><img decoding=\"async\" class=\"alignnone size-full wp-image-6371\" src=\"https:\/\/builderscrack.co.nz\/blog\/wp-content\/uploads\/2016\/09\/shutterstock_683547277_Resized-1200x600.jpg\" alt=\"\" width=\"1200\" height=\"600\" \/><\/a><\/p>\n<p><strong>Retaining walls can be both functional and decorative features in a garden.\u00a0 As structural engineering plays a part in their construction, they are best left to expert tradespeople. We\u00a0take a look at what you need to know about retaining walls&#8230;<\/strong><\/p>\n<p><!--more--><\/p>\n<h2>What are retaining\u00a0walls?<\/h2>\n<p>The main purpose of a retaining wall is to hold back a load of soil or earth. This happens when there is a change in the grade of the ground. Each wall must support the weight of the soil behind it, as well as on it.<\/p>\n<p>Retaining walls need to let the water from behind drain freely.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-6372\" src=\"https:\/\/builderscrack.co.nz\/blog\/wp-content\/uploads\/2016\/09\/shutterstock_747919129.jpg\" alt=\"\" width=\"1200\" height=\"801\" srcset=\"https:\/\/builderscrack.co.nz\/blog\/wp-content\/uploads\/2016\/09\/shutterstock_747919129-200x134.jpg 200w, https:\/\/builderscrack.co.nz\/blog\/wp-content\/uploads\/2016\/09\/shutterstock_747919129-400x267.jpg 400w, https:\/\/builderscrack.co.nz\/blog\/wp-content\/uploads\/2016\/09\/shutterstock_747919129-500x334.jpg 500w, https:\/\/builderscrack.co.nz\/blog\/wp-content\/uploads\/2016\/09\/shutterstock_747919129-600x401.jpg 600w, https:\/\/builderscrack.co.nz\/blog\/wp-content\/uploads\/2016\/09\/shutterstock_747919129-768x513.jpg 768w, https:\/\/builderscrack.co.nz\/blog\/wp-content\/uploads\/2016\/09\/shutterstock_747919129-800x534.jpg 800w, https:\/\/builderscrack.co.nz\/blog\/wp-content\/uploads\/2016\/09\/shutterstock_747919129-1000x668.jpg 1000w, https:\/\/builderscrack.co.nz\/blog\/wp-content\/uploads\/2016\/09\/shutterstock_747919129.jpg 1200w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/p>\n<h3>Do I need a building consent?<\/h3>\n<p>A building consent is not needed for construction if the wall is less than 1.5m high and does not support anything other than the ground. If the wall needs to support additional load, such as a car or building and\/or it is over 1.5m in height, building consent is required.<\/p>\n<p>Depending on the type of soil and the weight of the load it is required to support, there are three main types of walls you can have built.<\/p>\n<ul>\n<li><strong>Gravity retaining wall<\/strong> \u2013 relies on the mass of the wall to hold back the soil. This includes concrete walls and crib walls.<\/li>\n<li><strong>Cantilever retaining wall<\/strong> \u2013 uses a T or an L shaped footing or vertical poles deeply embedded in the ground to hold back the weight of the soil.<\/li>\n<li><strong>Anchored retaining wall<\/strong> \u2013 anchors are tied into the rock or soil behind the retaining wall. More structurally secure in earthquakes, as the wall and soil move and stop together.<\/li>\n<\/ul>\n<p>Traditionally retaining walls have been built with two types of materials: timber and masonry. Once again, the type of soil, the size of the wall and the load it is required to support can determine the materials to be used.<\/p>\n<p>Cantilever walls requiring a T or L footing are usually made with concrete solid bricks or blocks, as well as timber. Gravity walls as either solid concrete or in the case of crib walls, hollow masonry blocks or pre-cut timber. Anchored walls often use a mixture of concrete, steel and timber.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-6373\" src=\"https:\/\/builderscrack.co.nz\/blog\/wp-content\/uploads\/2016\/09\/shutterstock_620460800_Revised-1200x800.jpg\" alt=\"\" width=\"1200\" height=\"800\" \/><\/p>\n<h3>Do you need a retaining wall?<\/h3>\n<p>If your land is sloped or rests near the edge of a slope, you may need to have a retaining wall built. This includes situations such as:<\/p>\n<ul>\n<li>Excavating for a swimming pool, where a wall is needed to hold soil back after excavation<\/li>\n<li>Areas you would like to utilise, such as space for an outdoor kitchen or built in garden<\/li>\n<li>Carports, garages or other buildings which rest at the top of a slope<\/li>\n<li>Ground which has slipped away due to earthquakes or weather conditions<\/li>\n<li>Areas of poor drainage and water pooling<\/li>\n<\/ul>\n<p><a href=\"https:\/\/builderscrack.co.nz\/blog\/wp-content\/uploads\/2016\/09\/95373-facebook.jpg\"><img decoding=\"async\" class=\"aligncenter wp-image-3489 size-full\" title=\"retaining walls\" src=\"https:\/\/builderscrack.co.nz\/blog\/wp-content\/uploads\/2016\/09\/95373-facebook.jpg\" alt=\"retaining walls\" width=\"1024\" height=\"1024\" srcset=\"https:\/\/builderscrack.co.nz\/blog\/wp-content\/uploads\/2016\/09\/95373-facebook-66x66.jpg 66w, https:\/\/builderscrack.co.nz\/blog\/wp-content\/uploads\/2016\/09\/95373-facebook-150x150.jpg 150w, https:\/\/builderscrack.co.nz\/blog\/wp-content\/uploads\/2016\/09\/95373-facebook-200x200.jpg 200w, https:\/\/builderscrack.co.nz\/blog\/wp-content\/uploads\/2016\/09\/95373-facebook-400x400.jpg 400w, https:\/\/builderscrack.co.nz\/blog\/wp-content\/uploads\/2016\/09\/95373-facebook-500x500.jpg 500w, https:\/\/builderscrack.co.nz\/blog\/wp-content\/uploads\/2016\/09\/95373-facebook-600x600.jpg 600w, https:\/\/builderscrack.co.nz\/blog\/wp-content\/uploads\/2016\/09\/95373-facebook-768x768.jpg 768w, https:\/\/builderscrack.co.nz\/blog\/wp-content\/uploads\/2016\/09\/95373-facebook-800x800.jpg 800w, https:\/\/builderscrack.co.nz\/blog\/wp-content\/uploads\/2016\/09\/95373-facebook-1000x1000.jpg 1000w, https:\/\/builderscrack.co.nz\/blog\/wp-content\/uploads\/2016\/09\/95373-facebook.jpg 1024w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a>As retaining walls are structural features, <a href=\"https:\/\/builderscrack.co.nz\/post-job\">hiring a professional builder or landscaper<\/a> to install one is essential. If you need a wall but don\u2019t know what type or if it needs building consent, our expert team of retaining wall specialists can help you out. Simply <a href=\"https:\/\/builderscrack.co.nz\/post-job\">post your job<\/a> here today and our local tradespeople will get in touch to give you a quote.<\/p>\n<p><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer;\">Save<\/span><\/p>\n<p><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer; top: 124px; left: 321px;\">Save<\/span><\/p>\n<p><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer;\">Save<\/span><\/p>\n<p><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer;\">Save<\/span><\/p>\n<\/div><\/div><\/div><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Retaining walls can be both functional and decorative  &#8230;<\/p>\n","protected":false},"author":2,"featured_media":6371,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[987],"tags":[904,924,1024],"class_list":["post-3482","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-advice-gardening","tag-904","tag-924","tag-planning-consent"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.3 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Retaining Walls 101 for Busy Homeowners and Future Developers<\/title>\n<meta name=\"description\" content=\"Wondering if your property needs retaining walls, which materials to use and if you need building consent? 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