{"id":3308,"date":"2026-11-07T00:40:19","date_gmt":"2026-11-07T00:40:19","guid":{"rendered":"https:\/\/fenzemin.com\/?page_id=3308"},"modified":"2026-11-07T05:32:24","modified_gmt":"2026-11-07T05:32:24","slug":"quay-construction","status":"publish","type":"page","link":"https:\/\/fenzemin.com\/en\/services\/quay-construction\/","title":{"rendered":"Quay Construction"},"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\/services\/\">Services<\/a> \u00b7 Marine structures \u00b7 Quay construction<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Quay Construction and Marine Structures: Piled Quays, Ground Improvement and Foundations<\/h1>\n\n\n\n<p class=\"fz-lead wp-block-paragraph\">In quay construction the hardest part is the ground: soft seabed layers and water act directly on the foundations. That is why we build the foundations of quays and coastal structures with bored piles, jet grouting and ground improvement.<\/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-full fz-hero-img fz-hero-svg\"><img decoding=\"async\" data-no-lazy=\"1\" data-skip-lazy=\"1\" src=\"https:\/\/fenzemin.com\/wp-content\/plugins\/fenzemin-core\/assets\/img\/rihtim-kesit-en.svg?v=1\" alt=\"Quay construction section: quay deck on bored piles, soft seabed, firm ground, jet grouting under the fill and rock armour\"\/><figcaption class=\"wp-element-caption\">Piled quay, schematic drawing<\/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\">Foundation<\/p>\n\n\n\n<p class=\"fz-keyfact-value wp-block-paragraph\">Bored piles, secant where needed<\/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\">Ground<\/p>\n\n\n\n<p class=\"fz-keyfact-value wp-block-paragraph\">Improvement with jet grouting<\/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\">Drilling<\/p>\n\n\n\n<p class=\"fz-keyfact-value wp-block-paragraph\">Cased<\/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\">Scope<\/p>\n\n\n\n<p class=\"fz-keyfact-value wp-block-paragraph\">Investigation, design, construction<\/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\">Founder&#8217;s experience<\/p>\n\n\n\n<p class=\"fz-keyfact-value wp-block-paragraph\">AES Yachting, Kocaeli<\/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\">Region<\/p>\n\n\n\n<p class=\"fz-keyfact-value wp-block-paragraph\">T\u00fcrkiye and Central Asia<\/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\">On this page<\/p>\n\n\n\n<ul class=\"wp-block-list fz-toc-list\">\n<li><a href=\"#difficulty\">Why coastal ground is hard<\/a><\/li>\n\n\n\n<li><a href=\"#types\">Types of quay<\/a><\/li>\n\n\n\n<li><a href=\"#process\">Construction process<\/a><\/li>\n\n\n\n<li><a href=\"#experience\">Our experience<\/a><\/li>\n\n\n\n<li><a href=\"#price\">Price and quote<\/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 id=\"difficulty\" class=\"wp-block-heading\">Quay construction and the ground: why is coastal ground hard?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">On the coast, the ground often consists of soft marine deposits, fill and water. As a result, these layers cannot carry the load and they settle. Saturated sand can also liquefy during an earthquake.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">That is why quay construction combines piles that carry the load down to a firm layer with improvement methods that strengthen weak ground. However, the site investigation decides which solution to use.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Risks in quay construction<\/h3>\n\n\n\n<ul class=\"wp-block-list fz-checks\">\n<li>Excessive settlement on a soft seabed<\/li>\n\n\n\n<li>Liquefaction of saturated sand during an earthquake<\/li>\n\n\n\n<li>Bore collapse during drilling and concrete quality<\/li>\n\n\n\n<li>Corrosion in salt water<\/li>\n\n\n\n<li>Wave loads and berthing loads from ships<\/li>\n<\/ul>\n\n\n\n<h2 id=\"types\" class=\"wp-block-heading\">Types of quay and their foundations<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">There are three main types of quay. We focus on the foundation work for piled quays and on ground improvement under the fill.<\/p>\n\n\n\n<figure class=\"wp-block-table fz-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Type<\/th><th>How it works<\/th><th>Ground works<\/th><\/tr><\/thead><tbody><tr><td>Piled quay<\/td><td>The deck sits on piles that go down through the seabed<\/td><td>Bored piles, rock sockets<\/td><\/tr><tr><td>Gravity quay<\/td><td>Blocks or caissons stand by their own weight<\/td><td>Base improvement, foundation bed<\/td><\/tr><tr><td>Sheet or pile wall quay<\/td><td>A pile or sheet pile wall holds the fill<\/td><td>Wall and anchors<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">On a piled quay, for example, we drill the piles with casing and place the concrete by tremie. We also reduce settlement of the fill behind the quay with <a href=\"https:\/\/fenzemin.com\/en\/services\/jet-grouting\/\">jet grouting<\/a>.<\/p>\n\n\n\n<h2 id=\"process\" class=\"wp-block-heading\">How do we run quay construction?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">We run a quay job step by step, from the site investigation to handover. Our partners carry out the investigation and design, while our own crews do the construction.<\/p>\n\n\n\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;6aeef461213dc&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"6aeef461213dc\" 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\/rihtim-kesit-en.svg?v=1\" alt=\"Section of a piled quay: deck on bored piles socketed into firm ground, jet grouting under the fill, rock armour on the slope\"\/><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 quay. The piles pass the soft seabed and sit in firm ground.<\/figcaption><\/figure>\n\n\n\n<ol class=\"wp-block-list fz-svc-steps\">\n<li><strong>Site investigation:<\/strong> Land and marine boreholes identify the layers and the firm ground.<\/li>\n\n\n\n<li><strong>Design:<\/strong> With our design partner we design the pile layout and the ground improvement.<\/li>\n\n\n\n<li><strong>Working platform:<\/strong> We build a platform for the piling rig on fill or on a jetty.<\/li>\n\n\n\n<li><strong>Piling:<\/strong> We drill with casing and place the concrete by tremie.<\/li>\n\n\n\n<li><strong>Ground improvement and deck:<\/strong> We improve the ground under the fill and tie the pile heads into the deck.<\/li>\n<\/ol>\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>What we watch most closely on the coast:<\/strong> the effect of seawater on concrete and steel. So we check the concrete cover, concrete class and pouring method carefully against the design.<\/p>\n<\/div>\n\n\n\n<h2 id=\"experience\" class=\"wp-block-heading\">Our experience in quay construction<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">In an earlier role in 2021\u20132022, our founder, Abdullah \u00c7etinta\u015f, worked on the AES Yachting berthing jetty and shipyard project in the Kocaeli Free Zone. That role covered all the ground works, from the site investigation through bored piles and jet grouting to the quay and steel structure foundations. It also included managing the whole process from budget to handover.<\/p>\n\n\n\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;6aeef461220b6&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"6aeef461220b6\" class=\"wp-block-image size-large wp-lightbox-container\"><img decoding=\"async\" width=\"1024\" height=\"683\" 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\/uploads\/2026\/11\/aes-yatcilik-rihtim-fore-kazik-makinesi-2021-1024x683.jpg\" alt=\"AES Yachting, Kocaeli, 2021: bored piling rig on a breakwater during quay construction, from our founder's earlier roles\" class=\"wp-image-3133\" srcset=\"https:\/\/fenzemin.com\/wp-content\/uploads\/2026\/11\/aes-yatcilik-rihtim-fore-kazik-makinesi-2021-1024x683.jpg 1024w, https:\/\/fenzemin.com\/wp-content\/uploads\/2026\/11\/aes-yatcilik-rihtim-fore-kazik-makinesi-2021-300x200.jpg 300w, https:\/\/fenzemin.com\/wp-content\/uploads\/2026\/11\/aes-yatcilik-rihtim-fore-kazik-makinesi-2021-768x512.jpg 768w, https:\/\/fenzemin.com\/wp-content\/uploads\/2026\/11\/aes-yatcilik-rihtim-fore-kazik-makinesi-2021.jpg 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><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\">From our founder&#8217;s earlier roles: AES Yachting, Kocaeli, 2021\u20132022<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">As Fen Zemin, we also built secant bored piles and jet grouting on the Karak\u00f6y waterfront for a foundation below sea level. <a href=\"https:\/\/fenzemin.com\/en\/projects\/karakoy-eren-holding-office-building\/\">See the Karak\u00f6y project.<\/a><\/p>\n\n\n\n<h2 id=\"price\" class=\"wp-block-heading\">What does the price of quay construction depend on?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">In quay work, the ground and sea conditions set most of the cost. That is why we quote from the quantities after the investigation and design.<\/p>\n\n\n\n<ul class=\"wp-block-list fz-checks\">\n<li>Number, diameter and length of piles; rock sockets<\/li>\n\n\n\n<li>Casing and working over water<\/li>\n\n\n\n<li>Ground improvement quantities<\/li>\n\n\n\n<li>Working platform or jetty<\/li>\n\n\n\n<li>Concrete class, corrosion measures and testing<\/li>\n\n\n\n<li>Mobilisation and sea conditions<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">What to send for a quote<\/h3>\n\n\n\n<ul class=\"wp-block-list fz-checks\">\n<li>Any land and marine boreholes<\/li>\n\n\n\n<li>Quay and deck design, or a concept design<\/li>\n\n\n\n<li>Water depth and site plan<\/li>\n\n\n\n<li>Target programme<\/li>\n<\/ul>\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-dark\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/fenzemin.com\/en\/request-a-quote\/\">Upload your files and request a quote<\/a><\/div>\n<\/div>\n\n\n\n<h2 id=\"faq\" class=\"wp-block-heading\">Frequently asked questions about quay construction<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">We have grouped the questions we receive by who asks them. 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\">Clients and project managers<\/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>What work do you do in quay construction?<\/summary>\n<p class=\"wp-block-paragraph\">We build quay foundations with bored piles, jet grouting and ground improvement. We also run the investigation and design with our partners, and our own crews do the construction.<\/p>\n<\/details>\n\n\n\n<details class=\"wp-block-details fz-faq is-layout-flow wp-block-details-is-layout-flow\"><summary>Do you drill the piles from the water?<\/summary>\n<p class=\"wp-block-paragraph\">Usually we first build a working platform with fill or a jetty. Then we run the rig from that platform. However, the water depth and the design decide which option suits.<\/p>\n<\/details>\n\n\n\n<details class=\"wp-block-details fz-faq is-layout-flow wp-block-details-is-layout-flow\"><summary>How long does quay work take?<\/summary>\n<p class=\"wp-block-paragraph\">The number of piles, sea conditions and the platform set the duration. So after the investigation and design we give a programme based on the quantities.<\/p>\n<\/details>\n\n\n\n<details class=\"wp-block-details fz-faq is-layout-flow wp-block-details-is-layout-flow\"><summary>Have you worked on the coast before?<\/summary>\n<p class=\"wp-block-paragraph\">Yes. As Fen Zemin, for example, we built secant piles and jet grouting on the Karak\u00f6y waterfront. Our founder also worked on the AES Yachting quay and shipyard project.<\/p>\n<\/details>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading fz-faq-group\">Site engineers<\/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 does seawater affect drilling?<\/summary>\n<p class=\"wp-block-paragraph\">Water and loose seabed layers make the bore collapse. So we drill with casing and place the concrete from the base by tremie.<\/p>\n<\/details>\n\n\n\n<details class=\"wp-block-details fz-faq is-layout-flow wp-block-details-is-layout-flow\"><summary>Do tides and waves hold up the work?<\/summary>\n<p class=\"wp-block-paragraph\">Waves and weather affect work over water. That is why we build weather allowance into the programme and plan critical pours for calm days.<\/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 do you do against corrosion?<\/summary>\n<p class=\"wp-block-paragraph\">The design sets the concrete class, the cover and any extra protection. Following these values on site therefore has a direct effect on the life of the quay.<\/p>\n<\/details>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading fz-faq-group\">Designers<\/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>What sets the pile length?<\/summary>\n<p class=\"wp-block-paragraph\">Each pile must pass through the soft seabed and reach far enough into the firm layer. Horizontal ship loads and seismic effects also shape the pile design.<\/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 can you do against liquefaction?<\/summary>\n<p class=\"wp-block-paragraph\">In fill and sandy layers, for example, jet grouting or another improvement method reduces the liquefaction risk. However, the design must follow TBDY 2018.<\/p>\n<\/details>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading fz-faq-group\">Academics and students<\/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>What is the difference between a piled quay and a gravity quay?<\/summary>\n<p class=\"wp-block-paragraph\">In a piled quay, the deck sits on piles that reach firm ground. In a gravity quay, by contrast, large blocks or caissons stay in balance by their own weight. That is why we more often choose a piled solution on a soft seabed.<\/p>\n<\/details>\n\n\n\n<details class=\"wp-block-details fz-faq is-layout-flow wp-block-details-is-layout-flow\"><summary>Where do the horizontal loads on a quay come from?<\/summary>\n<p class=\"wp-block-paragraph\">Ship berthing, mooring line pull, waves and earthquakes all create horizontal loads. Consequently, piles, and sometimes raking piles, carry these loads.<\/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 &amp; \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 page 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\n\n\n<h2 id=\"sources\" class=\"wp-block-heading fz-sources-title\">Sources<\/h2>\n\n\n\n<ul class=\"wp-block-list fz-sources\">\n<li><a href=\"https:\/\/landingpage.bsigroup.com\/LandingPage\/Undated?UPI=000000000019981614\" target=\"_blank\" rel=\"noopener\">EN 1536: Execution of special geotechnical works, bored piles<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.afad.gov.tr\/turkiye-bina-deprem-yonetmeligi\" target=\"_blank\" rel=\"noopener\">AFAD: Turkish Building Earthquake Code (TBDY 2018)<\/a><\/li>\n<\/ul>\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 services<\/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\">Cased bored piles<\/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 fill<\/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\">Land and marine boreholes<\/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\/geotechnical-design\/\">Geotechnical Design<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pile and improvement design<\/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\/projects\/karakoy-eren-holding-office-building\/\">Karak\u00f6y project<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Secant piles on the waterfront<\/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\/projects\/#kurucu\">Our Projects<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Our founder&#8217;s earlier projects<\/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\">Request a quote for quay construction<\/h2>\n\n\n\n<p class=\"fz-intro wp-block-paragraph\">Send us any boreholes and your design. Let us plan the process from investigation to construction, and the quote, together.<\/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","protected":false},"excerpt":{"rendered":"<p>Services \u00b7 Marine structures \u00b7 Quay construction Quay Construction and Marine Structures: Piled Quays, Ground Improvement and Foundations In quay construction the hardest part is the ground: soft seabed layers and water act directly on the foundations. That is why we build the foundations of quays and coastal structures with bored piles, jet grouting and [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3372,"parent":2479,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"no-sidebar","site-content-layout":"page-builder","ast-site-content-layout":"full-width-container","site-content-style":"unboxed","site-sidebar-style":"unboxed","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":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"enabled","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-3308","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>Quay Construction and Marine Foundations | Fen Zemin<\/title>\n<meta name=\"description\" content=\"Quay construction: bored piles, jet grouting and foundations for quays on the coast. 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