{"id":12912,"date":"2024-08-15T11:52:53","date_gmt":"2024-08-15T09:52:53","guid":{"rendered":"https:\/\/jansametal.com\/post-sobre-estructures-per-industria\/"},"modified":"2026-03-06T00:23:06","modified_gmt":"2026-03-05T23:23:06","slug":"post-sobre-estructures-per-industria","status":"publish","type":"post","link":"https:\/\/jansametal.com\/ca\/post-sobre-estructures-per-industria\/","title":{"rendered":"Acer vs. formig\u00f3: quin material genera menys CO\u2082 a la construcci\u00f3 d&#8217;una nau industrial?"},"content":{"rendered":"\n<p>Quan parlem de sostenibilitat en construcci\u00f3, el debat entre acer i formig\u00f3 continua sent clau. Per entendre-ho de forma objectiva, analitzem les dades de l&#8217; <em>Environmental Protection Agency (EPA)<\/em> sobre les emissions de CO\u2082 dels dos materials, i apliquem aquests valors a un cas real: una nau industrial de 600 m\u00b2 amb un transport mitj\u00e0 de 20 km fins a l&#8217;obra. <\/p>\n\n<p>\ud83d\udcca <strong>Dades base d&#8217;emissions per tona de material<\/strong><\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>Formig\u00f3:<\/strong> 265 kg CO\u2082 \/ tona<\/li>\n\n\n\n<li><strong>Acer:<\/strong> 694 kg CO\u2082 \/ tona<\/li>\n<\/ul>\n\n<p>A primera vista, l&#8217;acer sembla m\u00e9s contaminant. No obstant aix\u00f2, la comparaci\u00f3 canvia completament quan es t\u00e9 en compte <strong>la quantitat de material necessari<\/strong> i <strong>el transport fins a l&#8217;obra<\/strong> . <\/p>\n\n<div class=\"wp-block-uagb-image uagb-block-e98c9f0f wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-none\"><figure class=\"wp-block-uagb-image__figure\"><img decoding=\"async\" srcset=\"https:\/\/jansametal.com\/wp-content\/uploads\/2024\/08\/transport_vigas-1024x656.jpg ,https:\/\/jansametal.com\/wp-content\/uploads\/2024\/08\/transport_vigas-scaled.jpg 780w, https:\/\/jansametal.com\/wp-content\/uploads\/2024\/08\/transport_vigas-scaled.jpg 360w\" sizes=\"auto, (max-width: 480px) 150px\" src=\"https:\/\/jansametal.com\/wp-content\/uploads\/2024\/08\/transport_vigas-1024x656.jpg\" alt=\"\" class=\"uag-image-11215\" width=\"5280\" height=\"3384\" title=\"transport_bigues\" loading=\"lazy\" role=\"img\"><\/figure><\/div>\n\n<div class=\"wp-block-uagb-container uagb-block-c8780657 alignfull uagb-is-root-container\"><div class=\"uagb-container-inner-blocks-wrap\">\n<p class=\"has-medium-font-size\"><strong>Exemple pr\u00e0ctic: una biga duna nau industrial<\/strong><\/p>\n\n\n\n<h4 class=\"wp-block-heading has-medium-font-size\">Biga de formig\u00f3 (20 m de llargada)<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Volum: 4 m\u00b3<\/li>\n\n\n\n<li>Densitat: 2,3 t\/m\u00b3<\/li>\n\n\n\n<li>Pes total: 9,2 tones<\/li>\n\n\n\n<li>Emissions de CO\u2082: 9,2 t \u00d7 265 kg CO\u2082\/t = <strong>2.438 kg CO\u2082<\/strong><\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading has-medium-font-size\">Biga d&#8217;acer (21 m, perfil IPE)<\/h4>\n\n\n\n<p>Emissions de CO\u2082: 1,3 t \u00d7 694 kg CO\u2082\/t = <strong>902 kg CO\u2082<\/strong><\/p>\n\n\n\n<p>Pes: 1,3 tones<\/p>\n\n\n\n<p class=\"has-medium-font-size\"><strong>Transport de materials<\/strong><\/p>\n\n\n\n<p>Un cami\u00f3 emet aproximadament <strong>2,5 kg de CO\u2082 per litre de combustible<\/strong> i consumeix uns <strong>40 litres cada 100 km<\/strong> .<\/p>\n\n\n\n<p><strong>Acer:<\/strong><br\/> 1 cami\u00f3 \u00d7 20 km \u00d7 2,5 kg CO\u2082\/l \u00d7 (40 l \/ 100 km) = <strong>100 kg CO\u2082<\/strong><\/p>\n\n\n\n<p><strong>Formig\u00f3:<\/strong><br\/> 12 camions \u00d7 20 km \u00d7 2,5 kg CO\u2082\/l \u00d7 (40 l \/ 100 km) = <strong>1.200 kg CO\u2082<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading has-medium-font-size\"><strong>Emissions totals de CO\u2082 a la construcci\u00f3 de la nau<\/strong><\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Material<\/th><th>Emissions de fabricaci\u00f3<\/th><th>Emissions de transport<\/th><th>Total CO\u2082<\/th><\/tr><\/thead><tbody><tr><td>Formig\u00f3<\/td><td>2.438 kg<\/td><td>1.200 kg<\/td><td><strong>3.638 kg<\/strong><\/td><\/tr><tr><td>Acer<\/td><td>902 kg<\/td><td>100 kg<\/td><td><strong>1.002 kg<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div><\/div>\n\n<h3 class=\"wp-block-heading\" style=\"margin-top:40px\"><strong>Conclusi\u00f3<\/strong><\/h3>\n\n<p>Tot i que l&#8217;acer t\u00e9 <strong>m\u00e9s emissi\u00f3 per tona produ\u00efda<\/strong> , el <strong>pes estructural m\u00e9s baix<\/strong> i l&#8217; <strong>efici\u00e8ncia en el transport<\/strong> el converteixen en una opci\u00f3 <strong>m\u00e9s sostenible en el conjunt de l&#8217;obra<\/strong> .<\/p>\n\n<p>En el cas analitzat, <strong>una nau industrial met\u00e0l\u00b7lica genera un 72% menys de CO\u2082<\/strong> que el seu equivalent en formig\u00f3 (1.002 kg davant de 3.638 kg de CO\u2082).<\/p>\n\n<p>A m\u00e9s, l&#8217;acer ofereix altres avantatges ambientals:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>Es <strong>reutilitza i es recicla<\/strong> pr\u00e0cticament al 100%.<\/li>\n\n\n\n<li>Redueix els temps dobra i els residus generats.<\/li>\n\n\n\n<li>Permet dissenys m\u00e9s lleugers i eficients.<\/li>\n<\/ul>\n\n<h3 class=\"wp-block-heading\"><strong>En resum<\/strong><\/h3>\n\n<p>L&#8217;acer no sols aporta resist\u00e8ncia i precisi\u00f3 estructural, sin\u00f3 que tamb\u00e9 contribueix a una construcci\u00f3 <strong>m\u00e9s neta, r\u00e0pida i sostenible<\/strong> .<br\/> En projectes industrials, triar estructura met\u00e0l\u00b7lica no \u00e9s nom\u00e9s una decisi\u00f3 t\u00e8cnica, sin\u00f3 tamb\u00e9 <strong>una aposta per reduir la petjada de carboni real de l&#8217;edifici.<\/strong><\/p>\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Quan parlem de sostenibilitat en construcci\u00f3, el debat entre acer i formig\u00f3 continua sent clau. Per entendre-ho de forma objectiva, analitzem les dades de l&#8217; Environmental Protection Agency (EPA) sobre les emissions de CO\u2082 dels dos materials, i apliquem aquests valors a un cas real: una nau industrial de 600 m\u00b2 amb un transport mitj\u00e0 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":11224,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","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 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parlem de sostenibilitat en construcci\u00f3, el debat entre acer i formig\u00f3 continua sent clau. Per entendre-ho de forma objectiva, analitzem les dades de l&#8217; Environmental Protection Agency (EPA) sobre les emissions de CO\u2082 dels dos materials, i apliquem aquests valors a un cas real: una nau industrial de 600 m\u00b2 amb un transport mitj\u00e0&hellip;","_links":{"self":[{"href":"https:\/\/jansametal.com\/ca\/wp-json\/wp\/v2\/posts\/12912","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jansametal.com\/ca\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jansametal.com\/ca\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jansametal.com\/ca\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jansametal.com\/ca\/wp-json\/wp\/v2\/comments?post=12912"}],"version-history":[{"count":1,"href":"https:\/\/jansametal.com\/ca\/wp-json\/wp\/v2\/posts\/12912\/revisions"}],"predecessor-version":[{"id":12913,"href":"https:\/\/jansametal.com\/ca\/wp-json\/wp\/v2\/posts\/12912\/revisions\/12913"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/jansametal.com\/ca\/wp-json\/wp\/v2\/media\/11224"}],"wp:attachment":[{"href":"https:\/\/jansametal.com\/ca\/wp-json\/wp\/v2\/media?parent=12912"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jansametal.com\/ca\/wp-json\/wp\/v2\/categories?post=12912"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jansametal.com\/ca\/wp-json\/wp\/v2\/tags?post=12912"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}