{"id":3457,"date":"2026-11-07T20:37:08","date_gmt":"2026-11-07T20:37:08","guid":{"rendered":"https:\/\/fenzemin.com\/?page_id=3457"},"modified":"2026-11-08T04:44:52","modified_gmt":"2026-11-08T04:44:52","slug":"raft-or-piled-foundation","status":"publish","type":"page","link":"https:\/\/fenzemin.com\/en\/knowledge-centre\/raft-or-piled-foundation\/","title":{"rendered":"Raft or Piled Foundation?"},"content":{"rendered":"\n<div class=\"wp-block-group alignfull fz-home fz-svc is-layout-flow wp-block-group-is-layout-flow\">\n<section class=\"wp-block-group fz-page-hero fz-svc-hero is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group fz-wrap fz-svc-hero-grid is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group fz-svc-hero-text is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"fz-eyebrow wp-block-paragraph\"><a href=\"https:\/\/fenzemin.com\/en\/knowledge-centre\/\">Knowledge Centre<\/a> \u00b7 Guide \u00b7 Raft or piled foundation<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Raft or Piled Foundation? Which One Do You Need, and When?<\/h1>\n\n\n\n<p class=\"fz-lead wp-block-paragraph\">The answer to raft or piled foundation comes from the ground, not the building. In this guide we explain how each foundation works, when each one is enough and what options sit in between.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button fz-btn-primary\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/fenzemin.com\/en\/request-a-quote\/\">Request a Quote<\/a><\/div>\n\n\n\n<div class=\"wp-block-button fz-btn-ghost\"><a class=\"wp-block-button__link wp-element-button\" href=\"tel:+905369327494\">+90 536 932 74 94<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n<figure class=\"wp-block-image size-large fz-hero-img\"><img decoding=\"async\" width=\"768\" height=\"1024\" data-no-lazy=\"1\" data-skip-lazy=\"1\" src=\"https:\/\/fenzemin.com\/wp-content\/uploads\/2026\/11\/karakoy-temel-donatisi-2024-768x1024.jpg\" alt=\"Raft or piled foundation: placing foundation reinforcement in Karak\u00f6y, 2024\" class=\"wp-image-3078\" srcset=\"https:\/\/fenzemin.com\/wp-content\/uploads\/2026\/11\/karakoy-temel-donatisi-2024-768x1024.jpg 768w, https:\/\/fenzemin.com\/wp-content\/uploads\/2026\/11\/karakoy-temel-donatisi-2024-225x300.jpg 225w, https:\/\/fenzemin.com\/wp-content\/uploads\/2026\/11\/karakoy-temel-donatisi-2024-1152x1536.jpg 1152w, https:\/\/fenzemin.com\/wp-content\/uploads\/2026\/11\/karakoy-temel-donatisi-2024.jpg 1200w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><figcaption class=\"wp-element-caption\">Karak\u00f6y, 2024 \u00b7 foundation reinforcement<\/figcaption><\/figure>\n<\/div>\n<\/section>\n\n\n\n<section class=\"wp-block-group fz-svc-facts is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group fz-wrap is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group fz-keyfacts is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group fz-keyfact is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"fz-keyfact-label wp-block-paragraph\">Topic<\/p>\n\n\n\n<p class=\"fz-keyfact-value wp-block-paragraph\">Choosing a foundation<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-group fz-keyfact is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"fz-keyfact-label wp-block-paragraph\">Reading time<\/p>\n\n\n\n<p class=\"fz-keyfact-value wp-block-paragraph\">About 7 minutes<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-group fz-keyfact is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"fz-keyfact-label wp-block-paragraph\">Written by<\/p>\n\n\n\n<p class=\"fz-keyfact-value wp-block-paragraph\">Abdullah \u00c7etinta\u015f, Geological Engineer<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-group fz-keyfact is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"fz-keyfact-label wp-block-paragraph\">Updated<\/p>\n\n\n\n<p class=\"fz-keyfact-value wp-block-paragraph\">November 2026<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-group fz-keyfact is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"fz-keyfact-label wp-block-paragraph\">Related services<\/p>\n\n\n\n<p class=\"fz-keyfact-value wp-block-paragraph\">Bored piles, jet grouting, site investigation<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-group fz-keyfact is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"fz-keyfact-label wp-block-paragraph\">Who decides<\/p>\n\n\n\n<p class=\"fz-keyfact-value wp-block-paragraph\">Site investigation and structural design<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n\n\n\n<section class=\"wp-block-group fz-sec fz-svc-main is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group fz-wrap fz-svc-layout is-layout-flow wp-block-group-is-layout-flow\">\n<nav class=\"wp-block-group fz-svc-toc is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"fz-toc-title wp-block-paragraph\">In this guide<\/p>\n\n\n\n<ul class=\"wp-block-list fz-toc-list\">\n<li><a href=\"#difference\">The two types<\/a><\/li>\n\n\n\n<li><a href=\"#raft-enough\">When is a raft enough?<\/a><\/li>\n\n\n\n<li><a href=\"#piles-needed\">When are piles needed?<\/a><\/li>\n\n\n\n<li><a href=\"#in-between\">Piled raft and improvement<\/a><\/li>\n\n\n\n<li><a href=\"#decision\">How to decide<\/a><\/li>\n\n\n\n<li><a href=\"#faq\">FAQ<\/a><\/li>\n<\/ul>\n<\/nav>\n\n\n\n<div class=\"wp-block-group fz-svc-content is-layout-flow wp-block-group-is-layout-flow\">\n<h2 class=\"wp-block-heading\" id=\"difference\">Raft or piled foundation? First, the difference<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A raft covers the whole footprint of the building with a single reinforced concrete slab and spreads the load over a wide area. If the ground can carry that load and settlement stays within limits, a raft is usually the most economical solution.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In a piled foundation, by contrast, piles take the load and carry it down to a firm layer. As a result, the weak upper layers drop out of the picture. However, piling adds cost and time.<\/p>\n\n\n\n<figure class=\"wp-block-table fz-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Topic<\/th><th>Raft<\/th><th>Piled foundation<\/th><\/tr><\/thead><tbody><tr><td>How it carries load<\/td><td>Spreads it over a wide area<\/td><td>Takes it down to a firm layer<\/td><\/tr><tr><td>Suitable ground<\/td><td>Medium to firm ground<\/td><td>Soft clay, fill, high groundwater<\/td><\/tr><tr><td>Settlement<\/td><td>Depends on the ground; risk of differential settlement<\/td><td>Usually less<\/td><\/tr><tr><td>Cost and time<\/td><td>Usually lower<\/td><td>Piling adds to both<\/td><\/tr><tr><td>Liquefaction risk<\/td><td>Not enough on its own<\/td><td>Safer with ground improvement<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"raft-enough\">When is a raft enough?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">If the site investigation shows enough bearing capacity and acceptable settlement, a raft is often enough. Also, in deep basements the excavation sometimes reaches a firm layer already, so the raft sits directly on it.<\/p>\n\n\n\n<ul class=\"wp-block-list fz-checks\">\n<li>A bearing layer such as stiff clay, dense sand or rock<\/li>\n\n\n\n<li>Sites where the groundwater stays below the foundation<\/li>\n\n\n\n<li>Moderate loads with an even distribution<\/li>\n\n\n\n<li>Ground with no liquefaction risk<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"piles-needed\">When do you need a piled foundation?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">You need piles when the upper layers cannot carry the load or when settlement would be too large. For example, this is common in coastal fills and in loose ground along stream beds.<\/p>\n\n\n\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;6af0a5ba1d821&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"6af0a5ba1d821\" class=\"wp-block-image size-full fz-figure wp-lightbox-container\"><img decoding=\"async\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on--pointerdown=\"actions.preloadImage\" data-wp-on--pointerenter=\"actions.preloadImageWithDelay\" data-wp-on--pointerleave=\"actions.cancelPreload\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/fenzemin.com\/wp-content\/plugins\/fenzemin-core\/assets\/img\/fore-kazik-kesit-en.svg?v=1\" alt=\"How a piled foundation carries load: pile cap, shaft friction, end bearing and rock socket\"\/><button\n\t\t\tclass=\"lightbox-trigger\"\n\t\t\ttype=\"button\"\n\t\t\taria-haspopup=\"dialog\"\n\t\t\tdata-wp-bind--aria-label=\"state.thisImage.triggerButtonAriaLabel\"\n\t\t\tdata-wp-init=\"callbacks.initTriggerButton\"\n\t\t\tdata-wp-on--click=\"actions.showLightbox\"\n\t\t\tdata-wp-style--right=\"state.thisImage.buttonRight\"\n\t\t\tdata-wp-style--top=\"state.thisImage.buttonTop\"\n\t\t>\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewBox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\" \/>\n\t\t\t<\/svg>\n\t\t<\/button><figcaption class=\"wp-element-caption\">A piled foundation carries load to a firm layer through shaft friction and end bearing.<\/figcaption><\/figure>\n\n\n\n<ul class=\"wp-block-list fz-checks\">\n<li>Soft clay, organic soil or thick fill<\/li>\n\n\n\n<li>Heavy loads such as tall buildings and industrial structures<\/li>\n\n\n\n<li>A risk that one part of the building settles more than another<\/li>\n\n\n\n<li>Tension piles needed against uplift from groundwater<\/li>\n\n\n\n<li>Sites at risk of liquefaction, together with ground improvement<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">We also cover this topic in short videos on our YouTube channel. However, the footage may be sample material for educational purposes.<\/p>\n\n\n\n<div class=\"wp-block-group fz-videos fz-videos--svc is-layout-flow wp-block-group-is-layout-flow\"><figure class=\"fz-yt-wrap\"><a class=\"fz-yt\" href=\"https:\/\/www.youtube.com\/watch?v=hROx2yKq_WA\" data-id=\"hROx2yKq_WA\" data-title=\"Bored piles or a raft foundation?\" aria-label=\"Play video: Bored piles or a raft foundation?\" target=\"_blank\" rel=\"noopener\"><img src=\"https:\/\/i.ytimg.com\/vi\/hROx2yKq_WA\/hqdefault.jpg\" alt=\"\" width=\"480\" height=\"360\" loading=\"lazy\" decoding=\"async\"><span class=\"fz-yt-play\" aria-hidden=\"true\"><\/span><\/a><figcaption>Bored piles or a raft foundation?<small>In Turkish; may include sample footage for educational purposes<\/small><\/figcaption><\/figure>\n\n\n<figure class=\"fz-yt-wrap\"><a class=\"fz-yt\" href=\"https:\/\/www.youtube.com\/watch?v=q6Owv3zBb1E\" data-id=\"q6Owv3zBb1E\" data-title=\"Which foundation is safer on liquefiable ground?\" aria-label=\"Play video: Which foundation is safer on liquefiable ground?\" target=\"_blank\" rel=\"noopener\"><img src=\"https:\/\/i.ytimg.com\/vi\/q6Owv3zBb1E\/hqdefault.jpg\" alt=\"\" width=\"480\" height=\"360\" loading=\"lazy\" decoding=\"async\"><span class=\"fz-yt-play\" aria-hidden=\"true\"><\/span><\/a><figcaption>Which foundation is safer on liquefiable ground?<small>In Turkish; may include sample footage for educational purposes<\/small><\/figcaption><\/figure>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">You can find all our videos on our <a href=\"https:\/\/www.youtube.com\/@fenzemin\" target=\"_blank\" rel=\"noopener\">YouTube<\/a> and <a href=\"https:\/\/www.instagram.com\/fenzemin\/\" target=\"_blank\" rel=\"noopener\">Instagram<\/a> accounts.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"in-between\">Two options in between: piled raft and ground improvement<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Not every project has to sit at one of these two extremes. In a piled raft, for example, the raft carries part of the load while the piles reduce settlement; as a result, the number of piles can fall.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Another option is to improve the ground and place the raft on the improved soil. Jet grouting or deep soil mixing can do this. In Karak\u00f6y, for instance, we improved the ground under the foundation with jet grouting; when the excavation opened, the base about 4 m below sea level stayed dry.<\/p>\n\n\n\n<div class=\"wp-block-group fz-svc-note is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Important:<\/strong> the site investigation and the structural design decide which option is right. As the contractor, we review the options with the designer; the final decision, however, belongs to the designer.<\/p>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"decision\">Raft or piled foundation? How to reach a decision<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The decision starts with a sound site investigation. That is because bearing capacity, settlement and liquefaction calculations rely on borehole and laboratory data.<\/p>\n\n\n\n<ol class=\"wp-block-list fz-svc-steps\">\n<li><strong>Site investigation:<\/strong> the layers, the groundwater and the depth of firm ground.<\/li>\n\n\n\n<li><strong>Loads:<\/strong> the number of storeys, basements and the load distribution.<\/li>\n\n\n\n<li><strong>Earthquake:<\/strong> the ground class and liquefaction assessment under the Turkish Building Earthquake Code (TBDY 2018).<\/li>\n\n\n\n<li><strong>Options:<\/strong> raft, piled raft, piled foundation or ground improvement.<\/li>\n\n\n\n<li><strong>Cost and time:<\/strong> among options with the same safety, the more economical one.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">If you do not have a site investigation yet, we can arrange one <a href=\"https:\/\/fenzemin.com\/en\/services\/site-investigation\/\">together with our drilling partner<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"faq\">Raft or piled foundation: frequently asked questions<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">We have collected the questions about choosing a foundation that we hear most often. However, if yours is not here, call us or write through the quote form.<\/p>\n\n\n\n<h3 class=\"wp-block-heading fz-faq-group\">Choosing a foundation<\/h3>\n\n\n\n<div class=\"wp-block-group fz-faq-list fz-faq-list--svc is-layout-flow wp-block-group-is-layout-flow\">\n<details class=\"wp-block-details fz-faq is-layout-flow wp-block-details-is-layout-flow\"><summary>How much more does a piled foundation cost than a raft?<\/summary>\n<p class=\"wp-block-paragraph\">There is no fixed ratio, because the number of piles, their length and the ground change on every project. Still, saving on piles where the ground is poor usually means paying more later to repair settlement.<\/p>\n<\/details>\n\n\n\n<details class=\"wp-block-details fz-faq is-layout-flow wp-block-details-is-layout-flow\"><summary>Is a raft foundation safe in an earthquake?<\/summary>\n<p class=\"wp-block-paragraph\">Yes, if the ground is suitable and the design follows TBDY 2018. However, a raft alone is not enough on ground at risk of liquefaction; ground improvement or piles may be necessary.<\/p>\n<\/details>\n\n\n\n<details class=\"wp-block-details fz-faq is-layout-flow wp-block-details-is-layout-flow\"><summary>Which comes up more in urban regeneration projects?<\/summary>\n<p class=\"wp-block-paragraph\">The ground on the plot decides. For example, plots on fill and soft clay tend to need piles or improvement, while plots on firm ground usually take a raft.<\/p>\n<\/details>\n\n\n\n<details class=\"wp-block-details fz-faq is-layout-flow wp-block-details-is-layout-flow\"><summary>What is a piled raft?<\/summary>\n<p class=\"wp-block-paragraph\">In a piled raft, the raft and the piles share the load. In other words, the piles reduce settlement while the raft passes part of the load straight into the ground.<\/p>\n<\/details>\n\n\n\n<details class=\"wp-block-details fz-faq is-layout-flow wp-block-details-is-layout-flow\"><summary>Does the number of basement storeys affect the decision?<\/summary>\n<p class=\"wp-block-paragraph\">Yes. A deep basement excavation may reach a firm layer, so the raft can sit directly on it. If there is groundwater, however, you also need to allow for uplift.<\/p>\n<\/details>\n<\/div>\n\n\n\n<div class=\"wp-block-group fz-author is-layout-flow wp-block-group-is-layout-flow\">\n<figure class=\"wp-block-image size-medium fz-author-img\"><img decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/fenzemin.com\/wp-content\/uploads\/2026\/11\/abdullah-cetintas-jeoloji-muhendisi-300x300.jpg\" alt=\"Abdullah \u00c7etinta\u015f, Geological Engineer, founder of Fen Zemin &#038; \u0130n\u015faat\" class=\"wp-image-3026\" srcset=\"https:\/\/fenzemin.com\/wp-content\/uploads\/2026\/11\/abdullah-cetintas-jeoloji-muhendisi-300x300.jpg 300w, https:\/\/fenzemin.com\/wp-content\/uploads\/2026\/11\/abdullah-cetintas-jeoloji-muhendisi-150x150.jpg 150w, https:\/\/fenzemin.com\/wp-content\/uploads\/2026\/11\/abdullah-cetintas-jeoloji-muhendisi.jpg 640w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/figure>\n\n\n\n<div class=\"wp-block-group fz-author-body is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"fz-author-name wp-block-paragraph\"><strong>Abdullah \u00c7etinta\u015f<\/strong><\/p>\n\n\n\n<p class=\"fz-author-role wp-block-paragraph\">Geological Engineer \u00b7 Founder, Fen Zemin &amp; \u0130n\u015faat<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In ground engineering and foundations since 2006. This guide draws on the site experience of Abdullah and our team.<\/p>\n\n\n\n<p class=\"fz-author-meta wp-block-paragraph\"><a href=\"https:\/\/www.linkedin.com\/in\/abdullahcetintas\/\" target=\"_blank\" rel=\"noopener\">LinkedIn profile<\/a> \u00b7 Last updated: November 2026<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n\n\n\n<section class=\"wp-block-group fz-sec fz-sec--soft fz-svc-related is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group fz-wrap is-layout-flow wp-block-group-is-layout-flow\">\n<h2 class=\"wp-block-heading\">Related pages<\/h2>\n\n\n\n<div class=\"wp-block-group fz-related-grid is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group fz-related-card is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"fz-related-title wp-block-paragraph\"><a href=\"https:\/\/fenzemin.com\/en\/services\/bored-piles\/\">Bored Piles<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Piled foundations<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-group fz-related-card is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"fz-related-title wp-block-paragraph\"><a href=\"https:\/\/fenzemin.com\/en\/services\/jet-grouting\/\">Jet Grouting<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ground improvement under foundations<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-group fz-related-card is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"fz-related-title wp-block-paragraph\"><a href=\"https:\/\/fenzemin.com\/en\/services\/site-investigation\/\">Site Investigation<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Where the decision starts<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-group fz-related-card is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"fz-related-title wp-block-paragraph\"><a href=\"https:\/\/fenzemin.com\/en\/knowledge-centre\/bored-piles-jet-grouting-or-micropiles\/\">Bored piles or jet grouting?<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Choosing a method<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-group fz-related-card is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"fz-related-title wp-block-paragraph\"><a href=\"https:\/\/fenzemin.com\/en\/services\/urban-regeneration\/\">Urban Regeneration<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Foundations for rebuilding<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-group fz-related-card is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"fz-related-title wp-block-paragraph\"><a href=\"https:\/\/fenzemin.com\/en\/knowledge-centre\/\">Knowledge Centre<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">All guides<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n\n\n\n<section class=\"wp-block-group fz-sec fz-cta is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group fz-wrap fz-center is-layout-flow wp-block-group-is-layout-flow\">\n<h2 class=\"wp-block-heading\">Let us review your foundation system together<\/h2>\n\n\n\n<p class=\"fz-intro wp-block-paragraph\">Send us your site investigation and design. Then let us discuss the raft, piled raft and piled foundation options with your designer.<\/p>\n\n\n\n<div class=\"wp-block-buttons fz-center-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button fz-btn-primary\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/fenzemin.com\/en\/request-a-quote\/\">Request a Quote<\/a><\/div>\n\n\n\n<div class=\"wp-block-button fz-btn-dark\"><a class=\"wp-block-button__link wp-element-button\" href=\"tel:+905369327494\">+90 536 932 74 94<\/a><\/div>\n<\/div>\n<\/div>\n<\/section>\n<\/div>\n\n","protected":false},"excerpt":{"rendered":"<p>Knowledge Centre \u00b7 Guide \u00b7 Raft or piled foundation Raft or Piled Foundation? Which One Do You Need, and When? The answer to raft or piled foundation comes from the ground, not the building. In this guide we explain how each foundation works, when each one is enough and what options sit in between. Topic [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3079,"parent":3452,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"page-builder","ast-site-content-layout":"full-width-container","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":"disabled","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":"set","ast-page-background-enabled":"default","ast-page-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":"","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-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":"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":""},"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-opacity":"","overlay-gradient":""}},"_joinchat":[],"footnotes":""},"class_list":["post-3457","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Raft or Piled Foundation? 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