{"id":20055,"date":"2026-01-15T08:46:02","date_gmt":"2026-01-15T07:46:02","guid":{"rendered":"https:\/\/www.darda.de\/?page_id=20055"},"modified":"2026-06-09T17:59:08","modified_gmt":"2026-06-09T15:59:08","slug":"substructure","status":"publish","type":"page","link":"https:\/\/www.darda.de\/en\/knowledge\/substructure","title":{"rendered":"Substructure"},"content":{"rendered":"<div class=\"wissen-inhaltsbereich\">\n<p>The substructure is the load-bearing base of structural elements, traffic surfaces, and excavation pits. It connects soil, foundation, and structure into a functional system. In deconstruction, new developments, or refurbishment, the quality of the substructure determines load-bearing capacity, flatness, durability, and sensitivity to vibration. Anyone who removes, cuts, or splits selectively must understand the layering sequence, compaction, and moisture management of the substructure-particularly when low-vibration methods with concrete demolition shears or <a href=\"https:\/\/www.darda.de\/en\/product-overview\/hydraulic-rock-and-concrete-splitters\">stone and concrete splitters<\/a> are used, or when <a href=\"https:\/\/www.darda.de\/en\/product-overview\/hydraulic-power-units\">hydraulic power units<\/a> supply compact tools in confined conditions. Sound assessment and documentation of the substructure before work begins reduce rework, claims, and downtime.<\/p>\n<h2>Definition: What is meant by substructure?<\/h2>\n<p>In construction, substructure refers to the entirety of layers and components that lie beneath a structure and transfer its loads into the ground. Depending on the application, this includes the natural soil (<em>subgrade<\/em>), the prepared <strong>formation level<\/strong>, capillary-breaking and <strong>frost-resistant layers<\/strong>, <strong>base courses<\/strong>, <strong>blinding layers<\/strong>, as well as foundations or slabs. In road and path construction, the substructure primarily comprises the formation level, frost protection layers, and base courses; in building and civil engineering, it is foundations such as isolated footings or slabs; in tunneling, it is the invert with bedding and drainage. The aim is a permanently <strong>load-bearing<\/strong>, <em>low-deformation<\/em>, and drained base that safely transfers imposed and self-weight loads into the subsoil.<\/p>\n<ul>\n<li><strong>Traffic surfaces<\/strong>: formation level, frost protection, and unbound or bound base courses with defined compaction and drainage.<\/li>\n<li><strong>Building structures<\/strong>: footings or ground-bearing slabs on a level, compacted, and capillary-breaking build-up.<\/li>\n<li><strong>Tunneling<\/strong>: invert with bedding layers and reliable <strong>drainage<\/strong> to safeguard lining stability.<\/li>\n<\/ul>\n<h2>Structure and layers of the substructure<\/h2>\n<p>A load-bearing substructure consists of coordinated layers with clear functions. The starting point is the subgrade, which is transformed into a level formation by soil replacement or improvement (compaction, stabilization). This is followed by capillary-breaking and frost-inhibiting layers that keep water away and limit frost heave. Base courses of mineral mixtures distribute loads, even out irregularities, and serve as a bearing for foundations or slabs. A blinding layer separates ground and concrete and facilitates rebar installation. In structural engineering, foundations or ground-bearing slabs provide load transfer; in tunneling, the invert with bedding and drainage serves to convey water and ensure the sliding safety of lining elements. Crucial are well-graded aggregates, adequate compaction, and reliable drainage to avoid settlements and softening.<\/p>\n<ul>\n<li><strong>Functional separation<\/strong>: where soils of differing grain sizes meet, use separation layers or geotextiles to prevent fines migration.<\/li>\n<li><strong>Gradation and angularity<\/strong>: choose well-graded, crushed aggregates for stiffness and interlock; limit fines to maintain permeability.<\/li>\n<li><strong>Layer-wise placement<\/strong>: compact in thin lifts at near-optimum moisture to achieve target densities and stiffness uniformly.<\/li>\n<li><strong>Proof rolling<\/strong>: systematic proof rolling helps reveal soft spots and insufficient bonding between layers.<\/li>\n<\/ul>\n<h2>Geotechnical fundamentals: load-bearing capacity, compaction, and settlement<\/h2>\n<p>The performance of the substructure stands or falls with the interplay of soil type, density, water content, and compaction. Fine-grained soils react sensitively to moisture and frost; coarse-grained materials carry well but require proper integration with existing layers. In practice, degrees of compaction and stiffness are verified indirectly to control settlement risks. The goal is a substructure with sufficient stiffness that distributes load peaks and limits deformations without trapping water. In deconstruction projects, a well-assessed substructure stiffness minimizes vibrations during mechanical separation, for example when using concrete demolition shears near edges or splitting components on a soft ground bearing.<\/p>\n<ul>\n<li><strong>Laboratory control<\/strong>: compaction curves and moisture-density relationships guide target compaction windows.<\/li>\n<li><strong>Field density<\/strong>: sand replacement, nuclear density, or volumetric methods validate achieved compaction.<\/li>\n<li><strong>Stiffness checks<\/strong>: lightweight deflectometer or plate load testing provides moduli and settlement indications.<\/li>\n<li><strong>Settlement management<\/strong>: preloading, staged construction, and drainage prevent post-construction settlements.<\/li>\n<\/ul>\n<h2>Substructure in concrete demolition and specialized deconstruction<\/h2>\n<p>During deconstruction, the substructure acts as the support of the remaining structure and as a work platform. For selective separations with concrete demolition shears, understanding load transfer is essential: when a beam, slab, or foundation is opened, load paths change. A soft or unevenly bearing substructure can lead to uncontrolled cracking. Low-vibration methods such as <strong>splitting concrete<\/strong> or stone prove effective when adjacent components and the substructure are to be protected. The choice of hydraulic power packs also influences the approach: compact units enable work in confined areas and reduce repositioning times, which benefits the stability of temporary shoring. In specialized deconstruction, it is advisable to plan the sequence of cuts and splitting operations so that the substructure is not overloaded locally.<\/p>\n<ul>\n<li><strong>Reaction forces<\/strong>: pre-calculate tool reaction forces and verify contact pressures under outriggers and supports.<\/li>\n<li><strong>Temporary load paths<\/strong>: maintain redundant bearings and introduce shoring before severing key connections.<\/li>\n<li><strong>Load distribution<\/strong>: use high-strength mats or plates to limit local stress and avoid punching into soft layers.<\/li>\n<li><strong>Monitoring<\/strong>: track vibrations, crack widths, and settlements to adjust methods in real time.<\/li>\n<\/ul>\n<h2>Materials and functions at a glance<\/h2>\n<p>Substructure materials fulfill specific tasks. Mineral frost protection layers and base courses provide drainage and load distribution. Stabilized layers (for example, hydraulically bound base courses) increase stiffness but require controlled joints and water management. A blinding layer of lean concrete or mortar facilitates rebar setup and protects the underside of foundations from contamination. In tunneling, bedding materials with defined grading are used to support invert slabs uniformly. With natural-stone bearings, proper grading is crucial so that loads are transferred over an area and the stone does not rest in a tipping-prone manner.<\/p>\n<ul>\n<li><strong>Unbound granular layers<\/strong>: load distribution and permeability with robust tolerance to wetting-drying cycles.<\/li>\n<li><strong>Hydraulically bound layers<\/strong>: high stiffness and thin build-ups, but sensitive to shrinkage and water ingress if joints are not sealed.<\/li>\n<li><strong>Blinding layers<\/strong>: clean working surface, improved reinforcement placement, and reduced laitance mixing with soil.<\/li>\n<li><strong>Geosynthetics<\/strong>: separation, filtration, reinforcement, or drainage depending on product class and design intent.<\/li>\n<\/ul>\n<h2>Frost, water, and drainage<\/h2>\n<p>Water governs the behavior of the substructure. Capillary-breaking layers and functioning drainage protect the build-up from saturation, frost heave, and loss of bearing capacity. On slopes, protection against ponding is as important as safely conveying surface and seepage water. In excavation pits, effective dewatering reduces moisture in working and ground layers and stabilizes the platform for equipment. When separating with concrete demolition shears at foundation edges or splitting invert slabs near drainage lines, leaks must be avoided to prevent undermining.<\/p>\n<ul>\n<li><strong>Crossfall and falls<\/strong>: provide continuous falls toward outlets to avoid standing water.<\/li>\n<li><strong>Filter stability<\/strong>: observe established filter criteria between soil, drainage layer, and pipe backfill.<\/li>\n<li><strong>Continuity<\/strong>: ensure uninterrupted drainage paths and accessible inspection points for maintenance.<\/li>\n<li><strong>Edge sealing<\/strong>: seal joints and interfaces where water ingress could erode fines or cause frost lenses.<\/li>\n<\/ul>\n<h2>Tool selection and methods depending on the substructure<\/h2>\n<p>The characteristics of the substructure influence the choice of separation and demolition techniques. On soft or cohesive soils, low machine weights and low reaction forces are advantageous to limit sinkage and vibrations. <strong>Concrete demolition shears<\/strong> are suitable for gripping and separating reinforced concrete in a controlled manner without introducing oscillations into the substructure. <strong>Stone and concrete splitters<\/strong> enable calm separation by generating tensile stresses that open components along defined weaknesses. Combination shears and multi cutters help expose reinforcement and dismantle edge details. Hydraulic power packs provide the required pressures and flow rates and allow tools to be adapted flexibly. Where steel substructures exist within the substructure, the targeted use of <a href=\"https:\/\/www.darda.de\/en\/product-overview\/steel-shears\">steel shears<\/a> can detach metallic anchors or profiles without tearing up mineral layers.<\/p>\n<ul>\n<li><strong>Soft subgrades<\/strong>: prefer splitting and staged shearing, add load-spreading mats, and restrict machine slew ranges.<\/li>\n<li><strong>Stiff subgrades<\/strong>: higher-capacity shears and multi cutters can be operated efficiently with shorter cycle times.<\/li>\n<li><strong>Confined spaces<\/strong>: compact tools supplied by external power units reduce mass on the work platform.<\/li>\n<li><strong>Edge zones<\/strong>: pre-cut or pre-split to relieve stress before final separation near sensitive bearings.<\/li>\n<\/ul>\n<h2>Substructure in the application areas<\/h2>\n<h3>Concrete demolition and specialized deconstruction<\/h3>\n<p>Here the substructure is often simultaneously a bearing, a work platform, and a protected asset. The sequence and position of cuts are chosen to preserve residual load-bearing capacities. Concrete demolition shears separate components in stages, while stone and concrete splitters open components with low stress-advantageous on sensitive subgrades. Pre-weakening at defined planes reduces tool reaction and keeps vibration levels low.<\/p>\n<h3>Strip-out and cutting<\/h3>\n<p>For floor breakthroughs, slots, and foundation openings, the substructure\u00e2\u0080\u0099s reserve capacity must be considered. Wet cutting affects the moisture balance; targeted splitting and shear work reduce water demand and splash loss and protect adjacent substructure areas. Where wet processes are unavoidable, capture and discharge water to prevent saturation of bearing layers.<\/p>\n<h3>Rock demolition and tunneling<\/h3>\n<p>The tunnel invert serves as the substructure for lining and infrastructure. Controlled stress relief via splitting methods reduces vibrations and protects bedding and drainage. When repositioning blocks on the invert, calm, directed separations help avoid destabilizing the bearing. Attention to invert flatness and cleanliness shortens subsequent lining works.<\/p>\n<h3>Natural stone extraction<\/h3>\n<p>The substructure of a bedding bench influences fracture patterns and safety distances. Splitters create defined separation planes; the bearing surfaces remain intact so the next layer remains load-bearing. When sorting on the slab yard, a level, compacted base is important to avoid tipping moments. Separation and reinforcement layers reduce contamination of valuable stone by fines.<\/p>\n<h3>Special operations<\/h3>\n<p>In plant areas or existing basements with sensitive soils, low-vibration methods are in demand. Targeted separation of foundation fillets with concrete demolition shears or controlled splitting near service runs reduces risks of undermining and settlement. Temporary rerouting of loads and careful verification of service locations further mitigates damage potential.<\/p>\n<h2>Planning, sequence, and quality assurance<\/h2>\n<p>A structured approach increases safety and quality: first, determine ground data, layer sequence, and water management. Then define load assumptions and temporary shoring. Select tools to suit substructure stiffness and boundary conditions. Stage the removal so that bearings remain in place until the next step is secured. During execution, monitor moisture balance and the flatness of the working surface. Finally, clean substructure surfaces, check drainage points, and document the achieved compaction or stiffness indices.<\/p>\n<ol>\n<li><strong>Assessment<\/strong>: investigate subgrade, existing layers, groundwater, and drainage paths.<\/li>\n<li><strong>Design<\/strong>: specify layer functions, materials, target compaction, and verification methods.<\/li>\n<li><strong>Method statement<\/strong>: define sequence, tool selection, shoring, and hold points.<\/li>\n<li><strong>Protection<\/strong>: plan load distribution, access routes, and water management.<\/li>\n<li><strong>Execution control<\/strong>: check lift thickness, moisture, densities, and stiffness on an ongoing basis.<\/li>\n<li><strong>Monitoring<\/strong>: measure vibrations, settlements, and crack behavior during critical operations.<\/li>\n<li><strong>Handover<\/strong>: clean, verify drainage, and record as-built tests and inspections.<\/li>\n<\/ol>\n<h2>Occupational safety and protection of adjacent structures<\/h2>\n<p>Vibrations, settlements, and water ingress are key risks. Low-vibration methods such as splitting and shear work reduce effects on the substructure. Shoring, load distribution plates, and interlayers made of high-strength, slip-resistant materials prevent local overstress. For work on foundations, load redistributions must be planned to be predictable and transitions executed with low impact.<\/p>\n<ul>\n<li><strong>Exclusion zones<\/strong>: mark and enforce areas around temporary supports and edges.<\/li>\n<li><strong>Interface control<\/strong>: protect utilities and drainage lines against mechanical impact and washout.<\/li>\n<li><strong>Tool setup<\/strong>: verify hydraulic pressures and reaction paths before each operation step.<\/li>\n<li><strong>Documentation<\/strong>: maintain logs of measurements and adjust the method if thresholds are approached.<\/li>\n<\/ul>\n<h2>Sustainability and reuse<\/h2>\n<p>Carefully planned deconstruction preserves substructure layers that can be reused as a load-bearing work platform or, after testing, as construction material. Selective separations &#8211; such as exposing reinforcement with concrete demolition shears or opening massive components with low cracking by splitting &#8211; improve material purity. Drainage and frost-protection layers often remain functional and do not need to be completely replaced.<\/p>\n<ul>\n<li><strong>Selective processing<\/strong>: segregate materials at source to limit downcycling and disposal volumes.<\/li>\n<li><strong>Quality assurance<\/strong>: test grading, fines, and contaminants before reusing granular layers.<\/li>\n<li><strong>On-site reuse<\/strong>: screen and recompact suitable materials to reduce transport and emissions.<\/li>\n<li><strong>Lifecycle view<\/strong>: maintain drainage capacity and access for future inspection to extend service life.<\/li>\n<\/ul>\n<h2>Typical errors and how to avoid them<\/h2>\n<p>Frequent causes of damage include inadequate drainage, building over an unfit formation level, missing compaction at interfaces, and one-sided loads from asymmetric deconstruction. Equally critical are cuts or splitting operations without securing residual load-bearing capacity. Remedies include clear execution plans, moderate cut lengths, temporary load distribution, and choosing methods that minimize excitation of the substructure.<\/p>\n<ul>\n<li><strong>Ponding and softening<\/strong>: ensure continuous falls and filter-stable transitions.<\/li>\n<li><strong>Insufficient stiffness<\/strong>: compact in thin lifts at correct moisture and verify with field tests.<\/li>\n<li><strong>Local overstress<\/strong>: use mats or plates and reduce reaction forces through sequencing.<\/li>\n<li><strong>Uncontrolled load paths<\/strong>: keep temporary supports engaged until alternate bearings are proven.<\/li>\n<\/ul>\n<h2>Terminology and practical context<\/h2>\n<p>The substructure differs from the superstructure in that it primarily transfers loads into the ground and forms the base for structures. Foundations comprise the structural realization of load transfer with footings or slabs. In practice, these areas interlock: a cleanly placed blinding layer, a well-drained formation level, and a coordinated base course are the foundation for structures, traffic areas, and safe deconstruction work-especially when compact hydraulic power packs, concrete demolition shears, or stone and concrete splitters from Darda GmbH are used in sensitive environments. Clear terminology and consistent verification methods across disciplines streamline planning and execution.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>The substructure is the load-bearing base of structural elements, traffic surfaces, and excavation pits. It connects soil, foundation, and structure into a functional system. In deconstruction, new developments, or refurbishment, the quality of the substructure determines load-bearing capacity, flatness, durability, and sensitivity to vibration. Anyone who removes, cuts, or splits <a class=\"moretag\" href=\"https:\/\/www.darda.de\/en\/knowledge\/substructure\">read more&#8230;<\/a><\/p>\n","protected":false},"author":9,"featured_media":0,"parent":14846,"menu_order":0,"comment_status":"open","ping_status":"open","template":"tmpl\/template-wissen.php","meta":{"_acf_changed":false,"footnotes":"","_members_access_role":[],"_members_access_error":""},"class_list":["post-20055","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Substructure in Construction &amp; Civil Engineering<\/title>\n<meta name=\"description\" content=\"Understand construction substructure - layers, load transfer, compaction &amp; drainage for low vibration work \u2713 now.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.darda.de\/en\/knowledge\/substructure\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Substructure in Construction &amp; Civil Engineering\" \/>\n<meta property=\"og:description\" content=\"Understand construction substructure - layers, load transfer, compaction &amp; drainage for low vibration work \u2713 now.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.darda.de\/en\/knowledge\/substructure\" \/>\n<meta property=\"og:site_name\" content=\"Darda GmbH\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/DardaDemolition\" \/>\n<meta property=\"article:modified_time\" content=\"2026-06-09T15:59:08+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"11 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.darda.de\\\/en\\\/knowledge\\\/substructure\",\"url\":\"https:\\\/\\\/www.darda.de\\\/en\\\/knowledge\\\/substructure\",\"name\":\"Substructure in Construction & Civil Engineering\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.darda.de\\\/en#website\"},\"datePublished\":\"2026-01-15T07:46:02+00:00\",\"dateModified\":\"2026-06-09T15:59:08+00:00\",\"description\":\"Understand construction substructure - layers, load transfer, compaction & drainage for low vibration work \u2713 now.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.darda.de\\\/en\\\/knowledge\\\/substructure#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.darda.de\\\/en\\\/knowledge\\\/substructure\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.darda.de\\\/en\\\/knowledge\\\/substructure#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.darda.de\\\/en\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Knowledge\",\"item\":\"https:\\\/\\\/www.darda.de\\\/en\\\/knowledge\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Substructure\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.darda.de\\\/en#website\",\"url\":\"https:\\\/\\\/www.darda.de\\\/en\",\"name\":\"Darda GmbH\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.darda.de\\\/en#organization\"},\"alternateName\":\"Abbruchwerkzeuge\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.darda.de\\\/en?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.darda.de\\\/en#organization\",\"name\":\"Darda GmbH\",\"url\":\"https:\\\/\\\/www.darda.de\\\/en\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.darda.de\\\/en#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/www.darda.de\\\/wp-content\\\/uploads\\\/2017\\\/09\\\/android-icon-192x192-1.png\",\"contentUrl\":\"https:\\\/\\\/www.darda.de\\\/wp-content\\\/uploads\\\/2017\\\/09\\\/android-icon-192x192-1.png\",\"width\":192,\"height\":192,\"caption\":\"Darda GmbH\"},\"image\":{\"@id\":\"https:\\\/\\\/www.darda.de\\\/en#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/DardaDemolition\",\"https:\\\/\\\/www.instagram.com\\\/darda_demolition\",\"https:\\\/\\\/www.youtube.com\\\/user\\\/DardaGmbH\",\"https:\\\/\\\/www.xing.com\\\/pages\\\/darda-gmbh\",\"https:\\\/\\\/de.linkedin.com\\\/company\\\/darda-gmbh\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Substructure in Construction & Civil Engineering","description":"Understand construction substructure - layers, load transfer, compaction & drainage for low vibration work \u2713 now.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.darda.de\/en\/knowledge\/substructure","og_locale":"en_US","og_type":"article","og_title":"Substructure in Construction & Civil Engineering","og_description":"Understand construction substructure - layers, load transfer, compaction & drainage for low vibration work \u2713 now.","og_url":"https:\/\/www.darda.de\/en\/knowledge\/substructure","og_site_name":"Darda GmbH","article_publisher":"https:\/\/www.facebook.com\/DardaDemolition","article_modified_time":"2026-06-09T15:59:08+00:00","twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"11 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.darda.de\/en\/knowledge\/substructure","url":"https:\/\/www.darda.de\/en\/knowledge\/substructure","name":"Substructure in Construction & Civil Engineering","isPartOf":{"@id":"https:\/\/www.darda.de\/en#website"},"datePublished":"2026-01-15T07:46:02+00:00","dateModified":"2026-06-09T15:59:08+00:00","description":"Understand construction substructure - layers, load transfer, compaction & drainage for low vibration work \u2713 now.","breadcrumb":{"@id":"https:\/\/www.darda.de\/en\/knowledge\/substructure#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.darda.de\/en\/knowledge\/substructure"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.darda.de\/en\/knowledge\/substructure#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.darda.de\/en"},{"@type":"ListItem","position":2,"name":"Knowledge","item":"https:\/\/www.darda.de\/en\/knowledge"},{"@type":"ListItem","position":3,"name":"Substructure"}]},{"@type":"WebSite","@id":"https:\/\/www.darda.de\/en#website","url":"https:\/\/www.darda.de\/en","name":"Darda GmbH","description":"","publisher":{"@id":"https:\/\/www.darda.de\/en#organization"},"alternateName":"Abbruchwerkzeuge","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.darda.de\/en?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/www.darda.de\/en#organization","name":"Darda GmbH","url":"https:\/\/www.darda.de\/en","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.darda.de\/en#\/schema\/logo\/image\/","url":"https:\/\/www.darda.de\/wp-content\/uploads\/2017\/09\/android-icon-192x192-1.png","contentUrl":"https:\/\/www.darda.de\/wp-content\/uploads\/2017\/09\/android-icon-192x192-1.png","width":192,"height":192,"caption":"Darda GmbH"},"image":{"@id":"https:\/\/www.darda.de\/en#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/DardaDemolition","https:\/\/www.instagram.com\/darda_demolition","https:\/\/www.youtube.com\/user\/DardaGmbH","https:\/\/www.xing.com\/pages\/darda-gmbh","https:\/\/de.linkedin.com\/company\/darda-gmbh"]}]}},"_links":{"self":[{"href":"https:\/\/www.darda.de\/en\/wp-json\/wp\/v2\/pages\/20055","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.darda.de\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.darda.de\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.darda.de\/en\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/www.darda.de\/en\/wp-json\/wp\/v2\/comments?post=20055"}],"version-history":[{"count":2,"href":"https:\/\/www.darda.de\/en\/wp-json\/wp\/v2\/pages\/20055\/revisions"}],"predecessor-version":[{"id":28198,"href":"https:\/\/www.darda.de\/en\/wp-json\/wp\/v2\/pages\/20055\/revisions\/28198"}],"up":[{"embeddable":true,"href":"https:\/\/www.darda.de\/en\/wp-json\/wp\/v2\/pages\/14846"}],"wp:attachment":[{"href":"https:\/\/www.darda.de\/en\/wp-json\/wp\/v2\/media?parent=20055"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}