{"id":921445,"date":"2026-09-24T10:00:00","date_gmt":"2026-09-24T08:00:00","guid":{"rendered":"https:\/\/djya2ldob4.wpdns.site\/?page_id=921445"},"modified":"2026-10-27T09:16:16","modified_gmt":"2026-10-27T08:16:16","slug":"og5","status":"publish","type":"page","link":"https:\/\/www.cqop.com\/en\/list-of-soa-categories\/general-works\/og5\/","title":{"rendered":"SOA Category OG5"},"content":{"rendered":"\n\n<div class=\"cqop-v6 cqop-v6-soa-categoria-og5\" data-v6-page=\"Categoria-OG1\">\n\n<div id=\"contenuto\" class=\"cqop-v6-pannello-829311a\">\n    \n\n<div aria-hidden=\"true\" class=\"cqop-v6-pannello-fd08351 gb-text\"><\/div>\n\n\n\n    \n\n<div aria-hidden=\"true\" class=\"cqop-v6-pannello-d3705ba gb-text\"><\/div>\n\n\n\n    \n\n<div class=\"cqop-v6-contenuto-06a0e85\">\n      <nav style=\"--separator: &quot;\/&quot;\" class=\"cqop-breadcrumbs wp-block-breadcrumbs\" aria-label=\"Breadcrumbs\"><ol><li><a href=\"https:\/\/www.cqop.com\/en\/\">Home<\/a><\/li><li><a href=\"https:\/\/www.cqop.com\/en\/list-of-soa-categories\/\">List of SOA categories<\/a><\/li><li><a href=\"https:\/\/www.cqop.com\/en\/list-of-soa-categories\/general-works\/\">SOA general works categories<\/a><\/li><li><span aria-current=\"page\">SOA Category OG5<\/span><\/li><\/ol><\/nav>\n\n      \n\n<div class=\"cqop-v6-pannello-f3875ab\">\n        \n\n<span class=\"cqop-v6-pannello-4855609 gb-text\">OG5<\/span>\n\n\n\n        \n\n<span class=\"cqop-v6-pannello-ea96d22 gb-text\">General works categories<\/span>\n\n\n\n      <\/div>\n\n\n\n      \n\n<h1 class=\"cqop-v6-titolo-b35a3b5 gb-text\">SOA Category <span class=\"cqop-v6-pannello-8a3115e\">OG5<span aria-hidden=\"true\" class=\"cqop-v6-pannello-f4fc0bb\"><\/span><\/span><\/h1>\n\n\n\n      \n\n<p class=\"cqop-v6-testo-7496375 gb-text\">Working on dams with SOA qualification<\/p>\n\n\n\n\n\n    <\/div>\n\n\n\n  <\/div>\n\n\n\n\n  \n\n<div class=\"cqop-v6-pannello-13e79de\">\n    \n\n<div class=\"cqop-v6-griglia-642d0e4\">\n      \n\n<div>\n        \n        \n\n<p class=\"cqop-v6-testo-f811e2c gb-text\">The OG5 category within the SOA certification system covers the construction, maintenance, and rehabilitation of dams and major hydraulic barriers\u2014critical infrastructures for water-resource management, hydroelectric power generation, and territorial safety. OG5 includes all types of dams: concrete dams, earthfill dams, rockfill dams, gravity dams, and structures built for civil, agricultural, industrial, or hydraulic-regulation purposes. In essence, OG5 represents major hydraulic barrier works, a hallmark of Italian hydraulic engineering and a key instrument for sustainable water management.<\/p>\n\n\n\n\n<img class=\"gb-media-cqogillusog51 cqop-v6-pannello-e34122a cqop-og-illustration\" src=\"https:\/\/www.cqop.com\/wp-content\/uploads\/2026\/10\/og5-illustrazione-1-hero-blu-bordeaux.webp\" alt=\"Dams and water infrastructure \u2014 OG5 illustration\" width=\"840\" height=\"360\" loading=\"lazy\" decoding=\"async\" style=\"display:block;width:100%;max-width:700px;height:auto;margin:28px auto;object-fit:contain;\"\/>\n\n\n\n\n<\/div>\n\n\n\n      \n\n<div class=\"cqop-v6-pannello-136555f\">\n        \n<img role=\"presentation\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.cqop.com\/wp-content\/uploads\/2026\/10\/OG5-bianco-bordeaux-chiaro.webp\" alt=\"\" aria-hidden=\"true\" width=\"201\" height=\"201\" class=\"cqop-og-original-icon\" style=\"display:block;width:120px;height:120px;max-width:100%;object-fit:contain;margin:0 0 28px;\" \/>\n\n        \n\n<div class=\"cqop-v6-pannello-96ce454 gb-text\">Simulate the cost of SOA certification<\/div>\n\n\n\n        \n\n<a href=\"https:\/\/www.cqop.com\/en\/online-services\/fee-and-requirements-calculation\/\" class=\"cqop-v6-pulsante-5eba899 cqop-v6-state-6d47db8 gb-text\">Calculate fees and requirements<\/a>\n\n\n\n      <\/div>\n\n\n\n    <\/div>\n\n\n\n  <\/div>\n\n\n\n\n  \n\n<div class=\"cqop-v6-pannello-1d12dfc\">\n    \n\n<div class=\"cqop-v6-griglia-74a4c6d\">\n      \n\n<div class=\"cqop-v6-titolo-sticky-1c8b9f9\">\n        \n        \n\n<h2 class=\"cqop-v6-titolo-ecc189a gb-text\">Dams, energy, and safety: examples of works covered by OG5<\/h2>\n\n\n\n      <\/div>\n\n\n\n      \n\n<div>\n\n\n<img class=\"gb-media-cqogillusog52 cqop-v6-pannello-e34122a cqop-og-illustration\" src=\"https:\/\/www.cqop.com\/wp-content\/uploads\/2026\/10\/og5-illustrazione-2-derivazione-blu-bordeaux.webp\" alt=\"Dams and water infrastructure \u2014 OG5 illustration\" width=\"840\" height=\"448\" loading=\"lazy\" decoding=\"async\" style=\"display:block;width:100%;max-width:700px;height:auto;margin:28px auto;object-fit:contain;\"\/>\n\n\n\n\n<p class=\"cqop-v6-testo-7febc91 gb-text\">The OG5 category applies to complex hydraulic structures essential for water management, energy production, and territorial protection:<\/p>\n\n\n\n\n\n<ul class=\"cqop-v6-pannello-f72340a\">\n\n<li class=\"cqop-v6-griglia-eaa3518 gb-text\">\n              <span aria-hidden=\"true\" class=\"cqop-v6-pannello-17317d0\">01<\/span>\n              Potable-and irrigation-use dams: creation of artificial reservoirs for drinking water and agriculture, including diversion tunnels, gates, and monitoring systems.<\/li>\n\n\n\n            \n\n<li class=\"cqop-v6-griglia-eaa3518 gb-text\">\n              <span aria-hidden=\"true\" class=\"cqop-v6-pannello-17317d0\">02<\/span>\n              Hydroelectric dams: construction of hydraulic barriers for power plants, including foundations, spillways, conduits, and reservoir structures. Mechanical and electrical generation equipment (turbines, alternators) is covered under OG9.<\/li>\n\n\n\n            \n\n<li class=\"cqop-v6-griglia-eaa3518 gb-text\">\n              <span aria-hidden=\"true\" class=\"cqop-v6-pannello-17317d0\">03<\/span>\n              River barrages and navigation weirs: construction of fixed or movable barriers on rivers with hydraulic works and navigation locks.<\/li>\n\n\n\n            \n\n<li class=\"cqop-v6-griglia-eaa3518 gb-text\">\n              <span aria-hidden=\"true\" class=\"cqop-v6-pannello-17317d0\">04<\/span>\n              Flood-control basins and retention reservoirs: temporary structures designed to retain floodwaters and prevent inundation, distinct from the smaller works of OG8.<\/li>\n\n\n\n            \n\n<li class=\"cqop-v6-griglia-eaa3518 gb-text\">\n              <span aria-hidden=\"true\" class=\"cqop-v6-pannello-17317d0\">05<\/span>\n              Maintenance and upgrading of existing dams: structural, seismic, and plant-related interventions to enhance safety, performance, and overall functionality.<\/li>\n\n\n\n            <\/ul>\n\n\n\n\n\n<img class=\"gb-media-cqogillusog53 cqop-v6-pannello-e34122a cqop-og-illustration\" src=\"https:\/\/www.cqop.com\/wp-content\/uploads\/2026\/10\/og5-illustrazione-3-monitoraggio-blu-bordeaux.webp\" alt=\"Dams and water infrastructure \u2014 OG5 illustration\" width=\"840\" height=\"448\" loading=\"lazy\" decoding=\"async\" style=\"display:block;width:100%;max-width:700px;height:auto;margin:28px auto;object-fit:contain;\"\/>\n\n\n<\/div>\n\n\n\n    <\/div>\n\n\n\n  <\/div>\n\n\n\n\n  \n\n<div class=\"cqop-v6-pannello-13e79de\">\n    \n\n<div class=\"cqop-v6-contenuto-c7714c8\">\n      \n      \n\n<h2 class=\"cqop-v6-titolo-e915111 gb-text\">Categories that integrate with OG5<\/h2>\n\n\n\n      \n\n<div class=\"cqop-v6-griglia-9e34a50\">\n\n<div class=\"cqop-v6-pannello-12843ab\">\n            \n\n<div class=\"cqop-v6-pannello-947e167 gb-text\">OG8:<\/div>\n\n\n\n            \n\n<p class=\"cqop-v6-testo-8d82677 gb-text\">River and hydraulic protection works: OG8 covers embankments, channels, minor weirs, and broader river-regulation works. OG5 covers the primary barrier (the dam), while OG8 concerns downstream or ancillary structures such as resectioning, canalization, and energy-dissipation basins.<\/p>\n\n\n\n          <\/div>\n\n\n\n          \n\n<div class=\"cqop-v6-pannello-12843ab\">\n            \n\n<div class=\"cqop-v6-pannello-947e167 gb-text\">OG6:<\/div>\n\n\n\n            \n\n<p class=\"cqop-v6-testo-8d82677 gb-text\">Aqueducts and irrigation works: OG6 concerns water-distribution and supply networks, whereas OG5 builds the main storage structure. An OG5 dam often connects to an OG6 system of irrigation channels, pipelines, or pumping stations.<\/p>\n\n\n\n          <\/div>\n\n\n\n          \n\n<div class=\"cqop-v6-pannello-12843ab\">\n            \n\n<div class=\"cqop-v6-pannello-947e167 gb-text\">OG9<\/div>\n\n\n\n            \n\n<p class=\"cqop-v6-testo-8d82677 gb-text\">Hydroelectric power plants: OG9 focuses on the power-generation plant and related systems, while OG5 covers the civil works creating the reservoir and discharge structures. In hydroelectric projects, OG5 is structural, OG9 is electromechanical\u2014two interconnected but distinct scopes.<\/p>\n\n\n\n          <\/div>\n\n\n\n          \n\n<div class=\"cqop-v6-pannello-12843ab\">\n            \n\n<div class=\"cqop-v6-pannello-947e167 gb-text\">OG13:<\/div>\n\n\n\n            \n\n<p class=\"cqop-v6-testo-8d82677 gb-text\">Environmental and natural-engineering works: OG13 includes environmental mitigation activities such as slope revegetation, creation of wetlands, and compensatory habitats\u2014all supporting the integration of OG5 dams into the landscape and stabilizing reservoir slopes.<\/p>\n\n\n\n          <\/div>\n\n\n\n          \n\n<div class=\"cqop-v6-pannello-12843ab\">\n            \n\n            \n\n<p class=\"cqop-v6-testo-8d82677 gb-text\">Specialist OS categories: OS21 (special foundations and ground consolidation), OS18-A (steel components such as gates and conduits), and OS30 (electrical and control systems) frequently appear in OG5 projects.<\/p>\n\n\n\n          <\/div>\n\n\n\n          <\/div>\n\n\n\n\n<div class=\"cqop-v6-griglia-ac0de1b\">\n        \n\n        \n\n      <\/div>\n\n\n\n    <\/div>\n\n\n\n  <\/div>\n\n\n\n\n  \n\n\n\n<div id=\"faq\" class=\"cqop-v6-pannello-481eee7\">\n    \n\n<div class=\"cqop-v6-griglia-28a732f\">\n      \n\n<div>\n        \n\n<h2 class=\"cqop-v6-titolo-2c72ce6 gb-text\">FAQ SOA Category OG5<\/h2>\n\n\n\n\n\n<div class=\"cqop-category-download cqop-category-download-minimal cqop-category-download-faq\">\n\n\n<a class=\"gb-text cqop-category-download-button\" href=\"https:\/\/www.cqop.com\/wp-content\/uploads\/2026\/10\/Modulistica-UK.pdf\" target=\"_blank\" rel=\"noopener noreferrer\" aria-label=\"Download PDF technical data sheets \u2014 opens in a new tab\">\n<svg role=\"presentation\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"22\" height=\"22\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M12 3v12m-5-5 5 5 5-5M4 16v5h16v-5\"\/><\/svg>\n\n\n<span class=\"gb-text\">Download PDF technical data sheets<\/span>\n<\/a>\n\n<\/div>\n\n\n\n      <\/div>\n\n\n\n      \n\n<div>\n        \n<div class=\"wp-block-essential-blocks-accordion cqop-faq-accordion root-cqop-faq-94003-0\"><div class=\"eb-parent-wrapper eb-parent-cqop-faq-94003-0 \"><div class=\"eb-accordion-container cqop-faq-94003-0\" data-accordion-type=\"accordion\" data-tab-icon=\"\" data-expanded-icon=\"\" data-transition-duration=\"500\"><div class=\"eb-accordion-inner\">\n<div class=\"wp-block-essential-blocks-accordion-item cqop-faq-94003-0-1 eb-accordion-wrapper\" data-clickable=\"false\"><div class=\"eb-accordion-title-wrapper eb-accordion-title-wrapper-cqop-faq-94003-0\" tabindex=\"0\"><div class=\"eb-accordion-title-content-wrap title-content-cqop-faq-94003-0\"><h2 class=\"eb-accordion-title\">What is the official \u201cdeclaratory\u201d of OG5?<\/h2><\/div><\/div><div class=\"eb-accordion-content-wrapper eb-accordion-content-wrapper-cqop-faq-94003-0\"><div class=\"eb-accordion-content\">\n<div class=\"gb-text cqop-faq-answer\"><p>OG5 covers the construction, maintenance, and refurbishment of point-based works required for water collection, located on waterways or internal basins, complete with all auxiliary systems necessary for their operation. It includes dams \u2013 of any material or type \u2013 intended to form artificial reservoirs for water supply, irrigation, or energy production.<\/p>\n<p><strong>Official Declaratory:<\/strong> OG5 concerns the construction, maintenance, or refurbishment of point-based works required for the collection of water for any purpose, located on rivers or internal basins, complete with all electromechanical, mechanical, electrical, telephone, and electronic systems required for efficiency and functionality, as well as all network works serving these structures. It includes dams built with any type of material.<\/p>\n<\/div>\n<\/div><\/div><\/div>\n\n\n<div class=\"wp-block-essential-blocks-accordion-item cqop-faq-94003-0-2 eb-accordion-wrapper\" data-clickable=\"false\"><div class=\"eb-accordion-title-wrapper eb-accordion-title-wrapper-cqop-faq-94003-0\" tabindex=\"0\"><div class=\"eb-accordion-title-content-wrap title-content-cqop-faq-94003-0\"><h2 class=\"eb-accordion-title\">What types of works fall under OG5?<\/h2><\/div><\/div><div class=\"eb-accordion-content-wrapper eb-accordion-content-wrapper-cqop-faq-94003-0\"><div class=\"eb-accordion-content\">\n<div class=\"gb-text cqop-faq-answer\"><p>All works related to major dams and hydraulic barriers: construction of new concrete or earthfill dams, maintenance and upgrading of existing dams, construction of river weirs and flood\u2011retention basins, and associated auxiliary works such as diversion tunnels, gates, and bottom outlets. Any intervention that creates or modifies a hydraulic barrier falls under OG5.<\/p>\n<\/div>\n<\/div><\/div><\/div>\n\n\n<div class=\"wp-block-essential-blocks-accordion-item cqop-faq-94003-0-3 eb-accordion-wrapper\" data-clickable=\"false\"><div class=\"eb-accordion-title-wrapper eb-accordion-title-wrapper-cqop-faq-94003-0\" tabindex=\"0\"><div class=\"eb-accordion-title-content-wrap title-content-cqop-faq-94003-0\"><h2 class=\"eb-accordion-title\">How does OG5 differ from related categories?<\/h2><\/div><\/div><div class=\"eb-accordion-content-wrapper eb-accordion-content-wrapper-cqop-faq-94003-0\"><div class=\"eb-accordion-content\">\n<div class=\"gb-text cqop-faq-answer\"><ul>\n<li>OG6: covers water\u2011supply and distribution networks (aqueducts, sewers), not the barrier itself.<\/li>\n<li>OG8: covers broader hydraulic\u2011protection works (embankments, channels, minor weirs).<\/li>\n<li>OG13: includes environmental mitigation and landscape\u2011integration works, complementary but not structural.<\/li>\n<\/ul>\n<\/div>\n<\/div><\/div><\/div>\n\n\n<div class=\"wp-block-essential-blocks-accordion-item cqop-faq-94003-0-4 eb-accordion-wrapper\" data-clickable=\"false\"><div class=\"eb-accordion-title-wrapper eb-accordion-title-wrapper-cqop-faq-94003-0\" tabindex=\"0\"><div class=\"eb-accordion-title-content-wrap title-content-cqop-faq-94003-0\"><h2 class=\"eb-accordion-title\">Can OG5 works be awarded under concessions or PPPs?<\/h2><\/div><\/div><div class=\"eb-accordion-content-wrapper eb-accordion-content-wrapper-cqop-faq-94003-0\"><div class=\"eb-accordion-content\">\n<div class=\"gb-text cqop-faq-answer\"><p>Yes. Some dams \u2013 especially those used for hydroelectric or irrigation purposes \u2013 can be developed or operated under concession or public \u2013 private partnership (PPP) models, combining public and private capital. In these cases, the concessionaire must still contract OG5\u2011qualified construction firms, ensuring technical and safety standards equivalent to public\u2011procurement requirements.<\/p>\n<\/div>\n<\/div><\/div><\/div>\n<\/div><\/div><\/div><\/div>\n\n<\/div>\n\n\n\n    <\/div>\n\n\n\n  <\/div>\n\n\n\n\n  \n\n\n  \n\n<div class=\"cqop-v6-pannello-5e842af\">\n    \n<svg focusable=\"false\" role=\"presentation\" aria-hidden=\"true\" class=\"cqop-v6-icona-71ff866\">\n      <defs>\n        <pattern id=\"mattoniOG1\" width=\"72\" height=\"36\" patternUnits=\"userSpaceOnUse\">\n          <rect x=\"0\" y=\"2\" width=\"32\" height=\"14\" fill=\"rgba(255,255,255,0.022)\"><\/rect>\n          <rect x=\"36\" y=\"2\" width=\"32\" height=\"14\" fill=\"rgba(255,255,255,0.022)\"><\/rect>\n          <rect x=\"18\" y=\"20\" width=\"32\" height=\"14\" fill=\"rgba(255,255,255,0.022)\"><\/rect>\n          <rect x=\"-18\" y=\"20\" width=\"32\" height=\"14\" fill=\"rgba(255,255,255,0.022)\"><\/rect>\n          <rect x=\"54\" y=\"20\" width=\"32\" height=\"14\" fill=\"rgba(255,255,255,0.022)\"><\/rect>\n        <\/pattern>\n      <\/defs>\n      <rect width=\"100%\" height=\"100%\" fill=\"url(#mattoniOG1)\"><\/rect>\n    <\/svg>\n\n    \n\n<div class=\"cqop-v6-griglia-7a21026\">\n      \n\n<div class=\"cqop-original-cta-copy\">\n\n<p class=\"cqop-v6-testo-3c2b5d5 gb-text\">OG5 is a strategic category for the future of Italy\u2019s water infrastructure. It represents a sector of high technical, economic, and environmental value, where expertise and qualification make a decisive difference.<\/p>\n\n\n\n\n\n<p class=\"cqop-v6-testo-3c2b5d5 gb-text\">Investing in SOA OG5 certification allows companies to access major public tenders for dam construction, upgrading, and maintenance \u2013 contributing to national water security, energy resilience, and territorial protection.<\/p>\n\n\n\n\n\n<p class=\"cqop-v6-testo-3c2b5d5 gb-text\">For companies, obtaining OG5 is not merely a technical formality \u2013 it is a mark of reliability, engineering strength, and operational capability in a complex and strategically vital sector.<\/p>\n\n\n\n\n\n<p class=\"cqop-category-conclusion-accent cqop-v6-testo-23dd753 gb-text\">Contact SOA CQOP to strengthen your position in major hydraulic civil works<\/p>\n\n\n\n<\/div>\n\n\n\n      \n\n<div class=\"cqop-v6-pannello-4cdb9ad\">\n        \n\n<a href=\"https:\/\/www.cqop.com\/en\/contacts\/\" class=\"cqop-v6-pulsante-5eba899 cqop-v6-state-f859560 gb-text\">Contact us<\/a>\n\n\n\n        \n\n      <\/div>\n\n\n\n    <\/div>\n\n\n\n  <\/div>\n\n\n\n\n  <\/div>\n\n\n\n\n","protected":false},"excerpt":{"rendered":"<p>OG5 General works categories SOA Category OG5 Working on dams with SOA qualification The OG5 category within the SOA certification system covers the construction, maintenance, and rehabilitation of dams and major hydraulic barriers\u2014critical infrastructures for water-resource management, hydroelectric power generation, and territorial safety. OG5 includes all types of dams: concrete dams, earthfill dams, rockfill dams, &#8230; <a title=\"SOA Category OG5\" class=\"read-more\" href=\"https:\/\/www.cqop.com\/en\/list-of-soa-categories\/general-works\/og5\/\" aria-label=\"Read more about SOA Category OG5\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":921039,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_eb_attr":"","_eb_data_table":"","footnotes":""},"class_list":["post-921445","page","type-page","status-publish"],"acf":{"h1_seo":""},"publishpress_future_workflow_manual_trigger":{"enabledWorkflows":[]},"_links":{"self":[{"href":"https:\/\/www.cqop.com\/en\/wp-json\/wp\/v2\/pages\/921445","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.cqop.com\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.cqop.com\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.cqop.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.cqop.com\/en\/wp-json\/wp\/v2\/comments?post=921445"}],"version-history":[{"count":6,"href":"https:\/\/www.cqop.com\/en\/wp-json\/wp\/v2\/pages\/921445\/revisions"}],"predecessor-version":[{"id":922189,"href":"https:\/\/www.cqop.com\/en\/wp-json\/wp\/v2\/pages\/921445\/revisions\/922189"}],"up":[{"embeddable":true,"href":"https:\/\/www.cqop.com\/en\/wp-json\/wp\/v2\/pages\/921039"}],"wp:attachment":[{"href":"https:\/\/www.cqop.com\/en\/wp-json\/wp\/v2\/media?parent=921445"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}