{"id":2211,"date":"2026-02-05T13:08:49","date_gmt":"2026-02-05T13:08:49","guid":{"rendered":"https:\/\/profound.nl\/?p=2211"},"modified":"2026-03-14T13:20:17","modified_gmt":"2026-03-14T13:20:17","slug":"pda-dlt-pile-testing-explained-astm-d4945-dynamic-load-testing","status":"publish","type":"post","link":"https:\/\/profound.nl\/de\/pda-dlt-pile-testing-explained-astm-d4945-dynamic-load-testing\/","title":{"rendered":"PDA &amp; DLT Pile Testing Explained | ASTM D4945 Dynamic Load Testing"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"2211\" class=\"elementor elementor-2211\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-221ff94 e-flex e-con-boxed e-con e-parent\" data-id=\"221ff94\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a19d88a elementor-widget elementor-widget-html\" data-id=\"a19d88a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<style>\r\n  :root {\r\n    --pf-blue-900: #083a54;\r\n    --pf-blue-800: #0b4f73;\r\n    --pf-blue-700: #0f6e9c;\r\n    --pf-blue-600: #1586b7;\r\n    --pf-sky-500: #27a7d8;\r\n    --pf-text: #0f2230;\r\n    --pf-muted: #5c6b76;\r\n    --pf-border: #e6edf2;\r\n    --pf-card: #ffffff;\r\n    --pf-bg: #f6f9fc;\r\n    --pf-radius: 22px;\r\n  }\r\n\r\n  .pf-wrap {\r\n    font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, \"Helvetica Neue\", sans-serif;\r\n    color: var(--pf-text);\r\n    line-height: 1.55;\r\n  }\r\n\r\n  .pf-container {\r\n    width: min(1140px, 92vw);\r\n    margin: 0 auto;\r\n  }\r\n\r\n  \/* HERO *\/\r\n  .pf-hero {\r\n    background: linear-gradient(180deg, var(--pf-blue-900) 0%, var(--pf-blue-700) 70%, var(--pf-sky-500) 100%);\r\n    border-radius: 28px;\r\n    overflow: hidden;\r\n    box-shadow: 0 18px 40px rgba(8, 58, 84, .22);\r\n    margin-bottom: 40px;\r\n  }\r\n\r\n  .pf-hero-inner {\r\n    padding: clamp(26px, 4vw, 54px);\r\n    display: grid;\r\n    grid-template-columns: 1.15fr .85fr;\r\n    gap: clamp(18px, 3vw, 42px);\r\n    align-items: center;\r\n  }\r\n\r\n  .pf-hero h1 {\r\n    color: #fff;\r\n    font-size: clamp(30px, 3.4vw, 46px);\r\n    line-height: 1.08;\r\n    margin: 0 0 10px 0;\r\n    letter-spacing: .2px;\r\n  }\r\n\r\n  .pf-hero .pf-hero-subtitle {\r\n    color: rgba(255, 255, 255, .92);\r\n    font-weight: 800;\r\n    letter-spacing: .2px;\r\n    margin: 0 0 14px 0;\r\n    font-size: 16px;\r\n  }\r\n\r\n  .pf-hero p {\r\n    color: rgba(255, 255, 255, .88);\r\n    font-size: 16.5px;\r\n    margin: 0 0 18px 0;\r\n    max-width: 70ch;\r\n  }\r\n\r\n  .pf-badges {\r\n    display: flex;\r\n    flex-wrap: wrap;\r\n    gap: 10px;\r\n    margin: 10px 0 24px 0;\r\n  }\r\n\r\n  .pf-badge {\r\n    display: inline-flex;\r\n    align-items: center;\r\n    gap: 8px;\r\n    padding: 8px 12px;\r\n    border-radius: 999px;\r\n    font-size: 13px;\r\n    color: #fff;\r\n    background: rgba(255, 255, 255, .12);\r\n    border: 1px solid rgba(255, 255, 255, .18);\r\n  }\r\n\r\n  \/* BUTTONS *\/\r\n  .pf-actions {\r\n    display: flex;\r\n    flex-wrap: wrap;\r\n    gap: 12px;\r\n    margin-top: 8px;\r\n  }\r\n\r\n  .pf-btn {\r\n    display: inline-flex;\r\n    align-items: center;\r\n    justify-content: center;\r\n    padding: 12px 20px;\r\n    border-radius: 999px;\r\n    font-weight: 700;\r\n    text-decoration: none;\r\n    font-size: 14px;\r\n    letter-spacing: .2px;\r\n    transition: transform .08s ease, box-shadow .12s ease, opacity .12s ease;\r\n    user-select: none;\r\n    cursor: pointer;\r\n\r\n    \/* RESPONSIVE SAFETY: prevent overflow on long labels *\/\r\n    max-width: 100%;\r\n    white-space: normal;\r\n    text-align: center;\r\n    line-height: 1.25;\r\n    overflow-wrap: anywhere;\r\n    word-break: break-word;\r\n  }\r\n\r\n  .pf-btn:hover { transform: translateY(-1px); 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}\r\n\r\n  @media (max-width: 900px) {\r\n    .pf-hero-inner { grid-template-columns: 1fr; }\r\n    .pf-card { grid-column: span 12; }\r\n    .pf-split { grid-template-columns: 1fr; }\r\n    .pf-download { grid-column: span 12; }\r\n    .pf-hero-tag { position: static; text-align: left; margin-top: 10px; }\r\n    .pf-cta { flex-direction: column; align-items: flex-start; }\r\n  }\r\n\r\n  \/* EXTRA MOBILE POLISH: buttons go full width, no overflow *\/\r\n  @media (max-width: 560px) {\r\n    .pf-actions {\r\n      flex-direction: column;\r\n      align-items: stretch;\r\n    }\r\n    .pf-btn {\r\n      width: 100%;\r\n      padding: 12px 16px;\r\n    }\r\n  }\r\n<\/style>\r\n\r\n<div class=\"pf-wrap\">\r\n  <div class=\"pf-container\">\r\n\r\n    <!-- HERO -->\r\n    <section class=\"pf-hero\" aria-label=\"PDA & DLT hero\">\r\n      <div class=\"pf-hero-inner\">\r\n        <div>\r\n          <h1>PDA &amp; DLT Pile Testing in Accordance with ASTM D4945<\/h1>\r\n          <p class=\"pf-hero-subtitle\">From Accurate Measurements to Reliable Static Bearing Capacity<\/p>\r\n          <p>\r\n            Dynamic pile testing, including Pile Driving Analysis (PDA) and Dynamic Load Testing (DLT), is widely used to assess pile behaviour and bearing capacity during and after installation.\r\n            When performed correctly, these methods provide a reliable and efficient alternative or complement to static load testing.\r\n          <\/p>\r\n          <p>\r\n            The quality of PDA and DLT results, however, does not depend on a single measurement. It is determined by the combined effect of correct installation, norm compliance,\r\n            signal processing, and professional interpretation. This article explains how a high-quality PDA\/DLT test is performed in accordance with ASTM D4945, from field measurement to final reporting.\r\n          <\/p>\r\n\r\n          <div class=\"pf-actions\">\r\n            <a class=\"pf-btn pf-btn-hero-primary\" href=\"https:\/\/profound.nl\/de\/pda-dynamic-load-testing\/\">The Profound PDA\/DLT-system<\/a>\r\n            <a class=\"pf-btn pf-btn-hero-ghost\" href=\"#downloads\">Herunterladen<\/a>\r\n          <\/div>\r\n        <\/div>\r\n\r\n        <div class=\"pf-hero-media\">\r\n          <div class=\"pf-device\">\r\n            <img decoding=\"async\"\r\n              src=\"https:\/\/profound.nl\/wp-content\/uploads\/2025\/04\/USBcar001-e1725024461579-768x505.jpg\"\r\n              alt=\"The Profound PDA\/DLT-system\"\r\n              loading=\"lazy\"\r\n              onerror=\"this.src='https:\/\/profound.nl\/wp-content\/uploads\/2025\/04\/Profound-017groot-scaled-1-300x192.jpg'\"\r\n            \/>\r\n          <\/div>\r\n          <div class=\"pf-hero-tag\">\r\n            <div class=\"pf-model\">PDA \/ DLT<\/div>\r\n            <div class=\"pf-sub\">ASTM D4945<\/div>\r\n          <\/div>\r\n        <\/div>\r\n      <\/div>\r\n    <\/section>\r\n\r\n    <!-- 1 -->\r\n    <section class=\"pf-section\" id=\"normative-framework\">\r\n      <div class=\"pf-surface\">\r\n        <p class=\"pf-kicker\">1. Normative Framework<\/p>\r\n        <h2 class=\"pf-h2\">ASTM D4945 as the International Standard<\/h2>\r\n        <p class=\"pf-lead\">\r\n          The globally recognized standard for high-strain dynamic pile testing is:\r\n          <a class=\"pf-inline-link\" href=\"https:\/\/www.astm.org\/d4945\" target=\"_blank\" rel=\"noopener\">\r\n            ASTM D4945 \u2013 Standard Test Method for High-Strain Dynamic Testing of Deep Foundations\r\n          <\/a>.\r\n          This standard defines requirements for:\r\n        <\/p>\r\n\r\n        <ul class=\"pf-list\">\r\n          <li>sensor positioning and installation<\/li>\r\n          <li>minimum distances from the pile head<\/li>\r\n          <li>acquisition and processing of force and velocity signals<\/li>\r\n          <li>interpretation methods such as the Case Method and signal matching<\/li>\r\n          <li>conditions under which dynamic results may be used to estimate static bearing capacity<\/li>\r\n        <\/ul>\r\n\r\n        <div class=\"pf-callout\">\r\n          <p style=\"margin:0; color: var(--pf-muted); font-size: 14.8px;\">\r\n            ASTM D4945 therefore forms the technical and contractual foundation for PDA and DLT testing worldwide.\r\n          <\/p>\r\n        <\/div>\r\n      <\/div>\r\n    <\/section>\r\n\r\n    <!-- 2 -->\r\n    <section class=\"pf-section\" id=\"sensor-installation\">\r\n      <div class=\"pf-surface\">\r\n        <p class=\"pf-kicker\">2. Correct Installation of PDA Sensors<\/p>\r\n        <h2 class=\"pf-h2\">Key to Reliable Results<\/h2>\r\n\r\n        <div class=\"pf-split\">\r\n          <div class=\"pf-box\">\r\n            <h3>Sensor location according to ASTM<\/h3>\r\n            <p>\r\n              ASTM D4945 specifies that sensors must be installed at a minimum distance of <strong>1.5 times the pile diameter<\/strong> below the pile head.\r\n              In practice, a distance of <strong>2 times the pile diameter<\/strong> is often applied to ensure uniform stress distribution and clean wave propagation.\r\n            <\/p>\r\n          <\/div>\r\n          <div class=\"pf-box\">\r\n            <h3>What goes wrong if placement is incorrect<\/h3>\r\n            <p>Incorrect sensor positioning can result in:<\/p>\r\n            <ul class=\"pf-list\">\r\n              <li>distorted stress waves<\/li>\r\n              <li>inaccurate force and velocity calculations<\/li>\r\n              <li>unreliable bearing capacity estimates<\/li>\r\n            <\/ul>\r\n          <\/div>\r\n        <\/div>\r\n\r\n        <div class=\"pf-callout\">\r\n          <p style=\"margin:0 0 10px 0; color: var(--pf-muted); font-size: 14.8px;\">\r\n            Recommended mounting positions and installation procedures are described in the Profound PDA- Installation on concrete and steel piles\r\n          <\/p>\r\n          <p style=\"margin:0 0 10px 0; color: var(--pf-muted); font-size: 14.8px;\">\r\n            <strong>Concrete piles:<\/strong> sensors mounted on a flat, perpendicular surface using mechanical anchors\r\n          <\/p>\r\n          <p style=\"margin:0 0 10px 0; color: var(--pf-muted); font-size: 14.8px;\">\r\n            <strong>Steel piles:<\/strong> sensors installed using threaded holes or welded mounting blocks\r\n          <\/p>\r\n          <p style=\"margin:0; color: var(--pf-muted); font-size: 14.8px;\">\r\n            After installation, zero offsets and pre-stress are checked in the PDA software to confirm that sensors are mounted stress-free.\r\n          <\/p>\r\n        <\/div>\r\n\r\n        <div class=\"pf-actions\" style=\"margin-top:16px;\">\r\n          <a class=\"pf-btn pf-btn-primary\" href=\"https:\/\/profound.nl\/wp-content\/uploads\/2026\/02\/manual_Profound_PDA-USB_III_mounting_sensors_jb_2.20_EN.pdf\" target=\"_blank\" rel=\"noopener\">\r\n            PDA\/DLT sensor mounting manual (Download)\r\n          <\/a>\r\n        <\/div>\r\n      <\/div>\r\n    <\/section>\r\n\r\n    <!-- 3 -->\r\n    <section class=\"pf-section\" id=\"pda-during-driving\">\r\n      <div class=\"pf-surface\">\r\n        <p class=\"pf-kicker\">3. PDA Measurements During Driving<\/p>\r\n        <h2 class=\"pf-h2\">Monitoring Pile Integrity and Installation Stresses<\/h2>\r\n\r\n        <p class=\"pf-lead\">During pile driving, PDA measurements provide real-time insight into:<\/p>\r\n        <ul class=\"pf-list\">\r\n          <li>acceleration and strain<\/li>\r\n          <li>derived force and velocity<\/li>\r\n          <li>compressive and tensile stresses in the pile<\/li>\r\n          <li>hammer efficiency and transferred energy<\/li>\r\n        <\/ul>\r\n\r\n        <p class=\"pf-lead\" style=\"margin-top:14px;\">These measurements are essential for:<\/p>\r\n        <ul class=\"pf-list\">\r\n          <li>verifying structural safety during driving<\/li>\r\n          <li>preventing pile damage<\/li>\r\n          <li>documenting installation quality for quality assurance<\/li>\r\n        <\/ul>\r\n\r\n        <div class=\"pf-callout\">\r\n          <p style=\"margin:0; color: var(--pf-muted); font-size: 14.8px;\">\r\n            The complete procedure for performing PDA measurements with the PDA-USB system is described in:\r\n            <strong>Manual Part II \u2013 Working with the PDA\/DLT system<\/strong>.\r\n          <\/p>\r\n        <\/div>\r\n\r\n        <div class=\"pf-actions\" style=\"margin-top:16px;\">\r\n          <a class=\"pf-btn pf-btn-primary\" href=\"https:\/\/profound.nl\/wp-content\/uploads\/2026\/02\/manual_Profound_PDA-USB_II_operation_2.20_EN.pdf\" target=\"_blank\" rel=\"noopener\">\r\n            Manual Part II \u2013 Working with the PDA\/DLT system (Download)\r\n          <\/a>\r\n        <\/div>\r\n      <\/div>\r\n    <\/section>\r\n\r\n    <!-- 4 -->\r\n    <section class=\"pf-section\" id=\"dlt-after-setup\">\r\n      <div class=\"pf-surface\">\r\n        <p class=\"pf-kicker\">4. Dynamic Load Testing After Setup<\/p>\r\n        <h2 class=\"pf-h2\">Why Waiting Matters<\/h2>\r\n\r\n        <p class=\"pf-lead\">ASTM D4945 clearly distinguishes between:<\/p>\r\n        <ul class=\"pf-list\">\r\n          <li>dynamic resistance measured during driving<\/li>\r\n          <li>static bearing capacity after soil setup<\/li>\r\n        <\/ul>\r\n\r\n        <p class=\"pf-lead\" style=\"margin-top:14px;\">\r\n          After installation, soil reconsolidation and stress redistribution may significantly influence pile resistance. Therefore, ASTM recommends performing a Dynamic Load Test after a setup period, typically ranging from several days to a week.\r\n        <\/p>\r\n\r\n        <p class=\"pf-lead\" style=\"margin-top:14px;\">Practical experience shows that:<\/p>\r\n        <ul class=\"pf-list\">\r\n          <li>dynamic resistance during driving often exceeds static bearing capacity<\/li>\r\n          <li>PDA results alone are insufficient for final acceptance<\/li>\r\n        <\/ul>\r\n\r\n        <div class=\"pf-callout\">\r\n          <p style=\"margin:0; color: var(--pf-muted); font-size: 14.8px;\">\r\n            In a documented case, for example: dynamic resistance \u2248 5.7 MN<br \/>\r\n            mobilized static resistance after setup \u2248 3.7 MN<br \/>\r\n            as determined by DLT and signal matching\r\n          <\/p>\r\n        <\/div>\r\n      <\/div>\r\n    <\/section>\r\n\r\n    <!-- 5 -->\r\n    <section class=\"pf-section\" id=\"signal-matching\">\r\n      <div class=\"pf-surface\">\r\n        <p class=\"pf-kicker\">5. Signal Matching with DLTWAVE<\/p>\r\n        <h2 class=\"pf-h2\">Converting Dynamic Data into Static Capacity<\/h2>\r\n\r\n        <h3 style=\"margin:0 0 8px 0; color: var(--pf-blue-900); font-size: 17px;\">What is signal matching?<\/h3>\r\n        <p class=\"pf-lead\">\r\n          Signal matching is an iterative process in which: measured force and velocity signals are compared with calculated signals derived from a pile\u2013soil model.\r\n          The objective is to achieve a close match between measured and calculated waveforms in the time domain.\r\n        <\/p>\r\n\r\n        <div class=\"pf-callout\">\r\n          <h3 style=\"margin:0 0 8px 0; color: var(--pf-blue-900); font-size: 17px;\">DLTWAVE and soil modeling<\/h3>\r\n          <p style=\"margin:0; color: var(--pf-muted); font-size: 14.8px;\">DLTWAVE applies:<\/p>\r\n          <ul class=\"pf-list\">\r\n            <li>Smith-type soil models<\/li>\r\n            <li>separate modeling of shaft and toe resistance<\/li>\r\n            <li>input from CPT data and stratified soil profiles<\/li>\r\n          <\/ul>\r\n\r\n          <p style=\"margin:10px 0 0 0; color: var(--pf-muted); font-size: 14.8px;\">The results provide:<\/p>\r\n          <ul class=\"pf-list\">\r\n            <li>total mobilized static bearing capacity<\/li>\r\n            <li>distribution of resistance along the pile<\/li>\r\n            <li>clear separation between shaft and toe contributions<\/li>\r\n            <li>The methodology is detailed in the Guideline Signal Matching with DLTWAVE and supported by practical DLTWAVE analyses<\/li>\r\n          <\/ul>\r\n\r\n          <p style=\"margin:10px 0 0 0; color: var(--pf-muted); font-size: 14.8px;\">\r\n            ASTM D4945 explicitly recognizes signal matching as a valid method for static capacity evaluation when applied correctly.\r\n          <\/p>\r\n        <\/div>\r\n\r\n        <div class=\"pf-actions\" style=\"margin-top:16px;\">\r\n          <a class=\"pf-btn pf-btn-primary\" href=\"https:\/\/profound.nl\/wp-content\/uploads\/2026\/02\/guideline_Profound_DLTWAVE_I_signalmatching_0.99_EN.pdf\" target=\"_blank\" rel=\"noopener\">\r\n            Guideline Signal Matching with DLTWAVE (Download)\r\n          <\/a>\r\n        <\/div>\r\n      <\/div>\r\n    <\/section>\r\n\r\n    <!-- 6 -->\r\n    <section class=\"pf-section\" id=\"reporting\">\r\n      <div class=\"pf-surface\">\r\n        <p class=\"pf-kicker\">6. Reporting<\/p>\r\n        <h2 class=\"pf-h2\">Transparent, Traceable, and Verifiable<\/h2>\r\n\r\n        <p class=\"pf-lead\">A professional PDA\/DLT report typically includes:<\/p>\r\n        <ul class=\"pf-list\">\r\n          <li>project and soil information<\/li>\r\n          <li>hammer, pile, and installation details<\/li>\r\n          <li>sensor configuration and calibration data<\/li>\r\n          <li>graphical PDA and DLT results<\/li>\r\n          <li>signal matching output<\/li>\r\n          <li>a clear distinction between dynamic and static resistance<\/li>\r\n          <li>An example of such a comprehensive report structure is shown in a PDA\/DLT project report<\/li>\r\n        <\/ul>\r\n\r\n        <div class=\"pf-actions\" style=\"margin-top:16px;\">\r\n          <a class=\"pf-btn pf-btn-primary\" href=\"https:\/\/profound.nl\/wp-content\/uploads\/2026\/02\/PDADLT-report.pdf\" target=\"_blank\" rel=\"noopener\">\r\n            Example PDADLT report (Download)\r\n          <\/a>\r\n        <\/div>\r\n      <\/div>\r\n    <\/section>\r\n\r\n    <!-- 7 -->\r\n    <section class=\"pf-section\" id=\"calibration\">\r\n      <div class=\"pf-surface\">\r\n        <p class=\"pf-kicker\">7. Calibration and Traceability<\/p>\r\n        <h2 class=\"pf-h2\">Not a Formality<\/h2>\r\n\r\n        <p class=\"pf-lead\">ASTM D4945 requires that:<\/p>\r\n        <ul class=\"pf-list\">\r\n          <li>all sensors are calibrated<\/li>\r\n          <li>calibration is traceable to national standards<\/li>\r\n          <li>serial numbers and sensitivities are documented<\/li>\r\n        <\/ul>\r\n\r\n        <div class=\"pf-callout\">\r\n          <p style=\"margin:0; color: var(--pf-muted); font-size: 14.8px;\">\r\n            Without traceable calibration, bearing capacity results lack technical credibility. For this reason, full calibration certificates for strain and acceleration sensors are always included in professional PDA\/DLT reports\r\n          <\/p>\r\n        <\/div>\r\n      <\/div>\r\n    <\/section>\r\n\r\n    <!-- CONCLUSION -->\r\n    <section class=\"pf-section\" id=\"conclusion\">\r\n      <div class=\"pf-surface\">\r\n        <p class=\"pf-kicker\">Schlussfolgerung<\/p>\r\n        <h2 class=\"pf-h2\">Schlussfolgerung<\/h2>\r\n\r\n        <p class=\"pf-lead\">\r\n          Dynamic pile testing is a powerful and efficient tool for foundation assessment \u2014 when performed in accordance with the standard. By ensuring:\r\n        <\/p>\r\n\r\n        <ul class=\"pf-list\">\r\n          <li>correct sensor installation per ASTM D4945<\/li>\r\n          <li>accurate PDA measurements during driving<\/li>\r\n          <li>DLT measurements after setup<\/li>\r\n          <li>transparent signal matching<\/li>\r\n          <li>complete and traceable reporting<\/li>\r\n        <\/ul>\r\n\r\n        <p class=\"pf-lead\" style=\"margin-top:14px;\">\r\n          engineers obtain a reliable representation of true pile behavior and static bearing capacity.\r\n        <\/p>\r\n\r\n        <div class=\"pf-callout\">\r\n          <p style=\"margin:0 0 10px 0; color: var(--pf-muted); font-size: 14.8px;\"><strong>Standards &amp; References<\/strong><\/p>\r\n          <p style=\"margin:0 0 6px 0; color: var(--pf-muted); font-size: 14.8px;\">\r\n            ASTM D4945 \u2013 High-Strain Dynamic Testing of Deep Foundations\r\n            <a class=\"pf-inline-link\" href=\"https:\/\/www.astm.org\/d4945\" target=\"_blank\" rel=\"noopener\">https:\/\/www.astm.org\/d4945<\/a>\r\n          <\/p>\r\n          <p style=\"margin:0 0 6px 0; color: var(--pf-muted); font-size: 14.8px;\">Profound PDA-USB Manuals (Installation, Operation, Sensor Mounting)<\/p>\r\n          <p style=\"margin:0; color: var(--pf-muted); font-size: 14.8px;\">Guideline Signal Matching with DLTWAVE<\/p>\r\n        <\/div>\r\n      <\/div>\r\n    <\/section>\r\n\r\n    <!-- DOWNLOADS (kept) -->\r\n    <section class=\"pf-section\" id=\"downloads\">\r\n      <div class=\"pf-surface\">\r\n        <p class=\"pf-kicker\">Herunterladen<\/p>\r\n        <h2 class=\"pf-h2\">Manuals, guideline, and example report<\/h2>\r\n        <p class=\"pf-lead\">\r\n          Use these PDFs as supporting documentation for mounting, operation, signal matching, and reporting structure.\r\n        <\/p>\r\n\r\n        <div class=\"pf-downloads\">\r\n          <div class=\"pf-download\">\r\n            <div class=\"pf-meta\">\r\n              <p style=\"margin:0 0 4px 0; font-weight:800; color: var(--pf-blue-900); font-size: 15px;\">PDA\/DLT Example Project Report (PDF)<\/p>\r\n              <p style=\"margin:0; color: var(--pf-muted); font-size: 13.8px;\">Example structure with results sections and appendices.<\/p>\r\n            <\/div>\r\n            <a class=\"pf-btn pf-btn-primary\" href=\"https:\/\/profound.nl\/wp-content\/uploads\/2026\/02\/PDADLT-report.pdf\" target=\"_blank\" rel=\"noopener\">Download<\/a>\r\n          <\/div>\r\n\r\n          <div class=\"pf-download\">\r\n            <div class=\"pf-meta\">\r\n              <p style=\"margin:0 0 4px 0; font-weight:800; color: var(--pf-blue-900); font-size: 15px;\">Guideline Signal Matching with DLTWAVE (PDF)<\/p>\r\n              <p style=\"margin:0; color: var(--pf-muted); font-size: 13.8px;\">Workflow from export to matching and results.<\/p>\r\n            <\/div>\r\n            <a class=\"pf-btn pf-btn-primary\" href=\"https:\/\/profound.nl\/wp-content\/uploads\/2026\/02\/guideline_Profound_DLTWAVE_I_signalmatching_0.99_EN.pdf\" target=\"_blank\" rel=\"noopener\">Download<\/a>\r\n          <\/div>\r\n\r\n          <div class=\"pf-download\">\r\n            <div class=\"pf-meta\">\r\n              <p style=\"margin:0 0 4px 0; font-weight:800; color: var(--pf-blue-900); font-size: 15px;\">Manual Part III: Mounting Sensors &amp; Junction Box (PDF)<\/p>\r\n              <p style=\"margin:0; color: var(--pf-muted); font-size: 13.8px;\">Mounting distances and installation checks.<\/p>\r\n            <\/div>\r\n            <a class=\"pf-btn pf-btn-primary\" href=\"https:\/\/profound.nl\/wp-content\/uploads\/2026\/02\/manual_Profound_PDA-USB_III_mounting_sensors_jb_2.20_EN.pdf\" target=\"_blank\" rel=\"noopener\">Download<\/a>\r\n          <\/div>\r\n\r\n          <div class=\"pf-download\">\r\n            <div class=\"pf-meta\">\r\n              <p style=\"margin:0 0 4px 0; font-weight:800; color: var(--pf-blue-900); font-size: 15px;\">Manual Part II: Working with the PDA\/DLT System (PDF)<\/p>\r\n              <p style=\"margin:0; color: var(--pf-muted); font-size: 13.8px;\">Operation workflow, settings, and measurement steps.<\/p>\r\n            <\/div>\r\n            <a class=\"pf-btn pf-btn-primary\" href=\"https:\/\/profound.nl\/wp-content\/uploads\/2026\/02\/manual_Profound_PDA-USB_II_operation_2.20_EN.pdf\" target=\"_blank\" rel=\"noopener\">Download<\/a>\r\n          <\/div>\r\n        <\/div>\r\n      <\/div>\r\n    <\/section>\r\n\r\n    <!-- CTA (kept) -->\r\n    <section class=\"pf-section\" id=\"contact\">\r\n      <div class=\"pf-cta\">\r\n        <div>\r\n          <h3>Want to run PDA and DLT with defensible results?<\/h3>\r\n          <p>\r\n            We support projects with correct mounting, clean signals, ASTM-aligned execution, DLTWAVE signal matching, and complete reporting.\r\n            Explore the system and options on the Profound PDA\/DLT page.\r\n          <\/p>\r\n        <\/div>\r\n\r\n        <div class=\"pf-actions\">\r\n          <a class=\"pf-btn pf-btn-primary\" href=\"https:\/\/profound.nl\/de\/pda-dynamic-load-testing\/\">Explore the PDA\/DLT system<\/a>\r\n          <a class=\"pf-btn pf-btn-secondary\" href=\"\/de\/contact\/\">Contact us<\/a>\r\n        <\/div>\r\n      <\/div>\r\n    <\/section>\r\n\r\n  <\/div>\r\n<\/div>\r\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>PDA &amp; DLT Pile Testing in Accordance with ASTM D4945 From Accurate Measurements to Reliable Static Bearing Capacity Dynamic pile testing, including Pile Driving Analysis (PDA) and Dynamic Load Testing (DLT), is widely used to assess pile behaviour and bearing capacity during and after installation. When performed correctly, these methods provide a reliable and efficient [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":97,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"page_builder":"","footnotes":""},"categories":[19],"tags":[],"class_list":["post-2211","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/profound.nl\/de\/wp-json\/wp\/v2\/posts\/2211","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/profound.nl\/de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/profound.nl\/de\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/profound.nl\/de\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/profound.nl\/de\/wp-json\/wp\/v2\/comments?post=2211"}],"version-history":[{"count":10,"href":"https:\/\/profound.nl\/de\/wp-json\/wp\/v2\/posts\/2211\/revisions"}],"predecessor-version":[{"id":2226,"href":"https:\/\/profound.nl\/de\/wp-json\/wp\/v2\/posts\/2211\/revisions\/2226"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/profound.nl\/de\/wp-json\/wp\/v2\/media\/97"}],"wp:attachment":[{"href":"https:\/\/profound.nl\/de\/wp-json\/wp\/v2\/media?parent=2211"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/profound.nl\/de\/wp-json\/wp\/v2\/categories?post=2211"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/profound.nl\/de\/wp-json\/wp\/v2\/tags?post=2211"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}