{"id":847,"date":"2020-01-02T17:00:00","date_gmt":"2020-01-02T17:00:00","guid":{"rendered":"https:\/\/www.tecnologiaedidattica.com\/blog\/?p=847"},"modified":"2022-12-07T08:12:52","modified_gmt":"2022-12-07T08:12:52","slug":"costruiamo-il-cartoncino-ondulato","status":"publish","type":"post","link":"https:\/\/www.tecnologiaedidattica.com\/blog\/costruiamo-il-cartoncino-ondulato\/","title":{"rendered":"Strutture resistenti per forma"},"content":{"rendered":"<p>Ciao,<\/p>\n<p>in questo post proveremo <strong>a realizzare con un foglio di carta una struttura<\/strong> dotata della cosiddetta &#8220;resistenza per forma&#8221;, vale a dire la capacit\u00e0 di resistere meglio alle sollecitazioni (compressione, trazione e flessione) <strong>cambiando solo la forma del foglio e piegandolo<\/strong> nel modo in cui vedremo.<\/p>\n<p>Per cominciare, <a href=\"https:\/\/www.tecnologiaedidattica.com\/blog\/download\/foglio_greca.pdf\">scarica il foglio<\/a> con le righe e stampalo; \u00e8 sufficiente un foglio solo per costruire un elemento, ma se ne stampi due ne avrai uno di riserva in caso di errore \ud83d\ude42<\/p>\n<p>Poi avrai bisogno\u00a0di:<\/p>\n<ul>\n<li>un paio di forbici con la punta arrotondata<\/li>\n<li>colla stick<\/li>\n<\/ul>\n<p>Inizia tagliando a met\u00e0 il foglio lungo la linea tratteggiata.<\/p>\n<p><a href=\"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_10_35_Pro.jpg\" rel=\"attachment wp-att-858\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-858 size-large\" src=\"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_10_35_Pro-1024x576.jpg\" alt=\"WP_20160307_08_10_35_Pro\" width=\"1024\" height=\"576\" srcset=\"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_10_35_Pro-1024x576.jpg 1024w, https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_10_35_Pro-300x169.jpg 300w, https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_10_35_Pro-768x432.jpg 768w, https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_10_35_Pro.jpg 1600w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p>Aiutandoti con una squadretta o un righello, piega la striscia di carta lungo le linee.<\/p>\n<p><a href=\"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_10_57_Pro.jpg\" rel=\"attachment wp-att-859\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-859 size-large\" src=\"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_10_57_Pro-1024x576.jpg\" alt=\"WP_20160307_08_10_57_Pro\" width=\"1024\" height=\"576\" srcset=\"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_10_57_Pro-1024x576.jpg 1024w, https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_10_57_Pro-300x169.jpg 300w, https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_10_57_Pro-768x432.jpg 768w, https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_10_57_Pro.jpg 1600w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p><a href=\"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_11_48_Pro.jpg\" rel=\"attachment wp-att-860\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-860 size-large\" src=\"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_11_48_Pro-1024x576.jpg\" alt=\"WP_20160307_08_11_48_Pro\" width=\"1024\" height=\"576\" srcset=\"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_11_48_Pro-1024x576.jpg 1024w, https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_11_48_Pro-300x169.jpg 300w, https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_11_48_Pro-768x432.jpg 768w, https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_11_48_Pro.jpg 1600w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p>Piega poi il foglio con il profilo che vedi nelle foto seguenti.<\/p>\n<p><a href=\"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_12_12_Pro.jpg\" rel=\"attachment wp-att-862\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-862 size-large\" src=\"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_12_12_Pro-1024x576.jpg\" alt=\"WP_20160307_08_12_12_Pro\" width=\"1024\" height=\"576\" srcset=\"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_12_12_Pro-1024x576.jpg 1024w, https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_12_12_Pro-300x169.jpg 300w, https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_12_12_Pro-768x432.jpg 768w, https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_12_12_Pro.jpg 1600w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p><a href=\"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_13_34_Pro.jpg\" rel=\"attachment wp-att-863\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-863 size-large\" src=\"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_13_34_Pro-1024x576.jpg\" alt=\"WP_20160307_08_13_34_Pro\" width=\"1024\" height=\"576\" srcset=\"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_13_34_Pro-1024x576.jpg 1024w, https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_13_34_Pro-300x169.jpg 300w, https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_13_34_Pro-768x432.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p>Metti la colla sull&#8217;altra striscia di carta.<\/p>\n<p><a href=\"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_14_56_Pro.jpg\" rel=\"attachment wp-att-864\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-864 size-large\" src=\"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_14_56_Pro-1024x576.jpg\" alt=\"WP_20160307_08_14_56_Pro\" width=\"1024\" height=\"576\" srcset=\"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_14_56_Pro-1024x576.jpg 1024w, https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_14_56_Pro-300x169.jpg 300w, https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_14_56_Pro-768x432.jpg 768w, https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_14_56_Pro.jpg 1600w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p><a href=\"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_15_17_Pro.jpg\" rel=\"attachment wp-att-866\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-866 size-large\" src=\"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_15_17_Pro-1024x576.jpg\" alt=\"WP_20160307_08_15_17_Pro\" width=\"1024\" height=\"576\" srcset=\"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_15_17_Pro-1024x576.jpg 1024w, https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_15_17_Pro-300x169.jpg 300w, https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_15_17_Pro-768x432.jpg 768w, https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_15_17_Pro.jpg 1600w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p><a href=\"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_16_14_Pro.jpg\" rel=\"attachment wp-att-867\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-867 size-large\" src=\"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_16_14_Pro-1024x576.jpg\" alt=\"WP_20160307_08_16_14_Pro\" width=\"1024\" height=\"576\" srcset=\"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_16_14_Pro-1024x576.jpg 1024w, https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_16_14_Pro-300x169.jpg 300w, https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_16_14_Pro-768x432.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p><a href=\"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_16_41_Pro.jpg\" rel=\"attachment wp-att-868\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-868 size-large\" src=\"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_16_41_Pro-1024x576.jpg\" alt=\"WP_20160307_08_16_41_Pro\" width=\"1024\" height=\"576\" srcset=\"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_16_41_Pro-1024x576.jpg 1024w, https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_16_41_Pro-300x169.jpg 300w, https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_16_41_Pro-768x432.jpg 768w, https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_16_41_Pro.jpg 1600w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p><a href=\"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_16_58_Pro.jpg\" rel=\"attachment wp-att-869\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-869 size-large\" src=\"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_16_58_Pro-1024x576.jpg\" alt=\"WP_20160307_08_16_58_Pro\" width=\"1024\" height=\"576\" srcset=\"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_16_58_Pro-1024x576.jpg 1024w, https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_16_58_Pro-300x169.jpg 300w, https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_16_58_Pro-768x432.jpg 768w, https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_16_58_Pro.jpg 1600w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p><a href=\"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_17_19_Pro.jpg\" rel=\"attachment wp-att-870\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-870 size-large\" src=\"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_17_19_Pro-1024x576.jpg\" alt=\"WP_20160307_08_17_19_Pro\" width=\"1024\" height=\"576\" srcset=\"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_17_19_Pro-1024x576.jpg 1024w, https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_17_19_Pro-300x169.jpg 300w, https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_17_19_Pro-768x432.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p><a href=\"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_17_33_Pro.jpg\" rel=\"attachment wp-att-871\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-871 size-large\" src=\"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_17_33_Pro-1024x576.jpg\" alt=\"WP_20160307_08_17_33_Pro\" width=\"1024\" height=\"576\" srcset=\"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_17_33_Pro-1024x576.jpg 1024w, https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_17_33_Pro-300x169.jpg 300w, https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_17_33_Pro-768x432.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p><a href=\"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_18_52_Pro.jpg\" rel=\"attachment wp-att-873\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-873 size-large\" src=\"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_18_52_Pro-1024x576.jpg\" alt=\"WP_20160307_08_18_52_Pro\" width=\"1024\" height=\"576\" srcset=\"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_18_52_Pro-1024x576.jpg 1024w, https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_18_52_Pro-300x169.jpg 300w, https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/WP_20160307_08_18_52_Pro-768x432.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p>Ecco la nostra piccola struttura, capace di sostenere il peso degli strumenti che abbiamo usato per realizzarlo&#8230;il foglio di carta da cui lo abbiamo ricavato non \u00e8 in grado di farlo, ma basta ripiegarlo e le nervature gli danno resistenza.<\/p>\n<p>Nella realt\u00e0, questo principio viene utilizzato per realizzare le<strong> lamiere grecate<\/strong>, lamiere di acciaio piegate &#8220;a greca&#8221; che, stese tra due travi, possono sostenere il peso di un tetto o di un solaio.<\/p>\n<figure id=\"attachment_2227\" aria-describedby=\"caption-attachment-2227\" style=\"width: 2400px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/steel_rooftop.png\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-2227 size-full\" src=\"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/steel_rooftop.png\" alt=\"\" width=\"2400\" height=\"1354\" srcset=\"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/steel_rooftop.png 2400w, https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/steel_rooftop-300x169.png 300w, https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/steel_rooftop-1024x578.png 1024w, https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/steel_rooftop-768x433.png 768w, https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/steel_rooftop-1536x867.png 1536w, https:\/\/www.tecnologiaedidattica.com\/blog\/wp-content\/uploads\/2016\/03\/steel_rooftop-2048x1155.png 2048w\" sizes=\"auto, (max-width: 2400px) 100vw, 2400px\" \/><\/a><figcaption id=\"caption-attachment-2227\" class=\"wp-caption-text\"><strong>Un solaio in acciaio<\/strong>: si notano le travi e i travetti e la lamiera grecata in acciaio appoggiata su di essi.<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Ciao, in questo post proveremo a realizzare con un foglio di carta una struttura dotata della cosiddetta &#8220;resistenza per forma&#8221;, vale a dire la capacit\u00e0 di resistere meglio alle sollecitazioni (compressione, trazione e flessione) cambiando solo la forma del foglio e piegandolo nel modo in cui vedremo. Per cominciare, scarica il foglio con le righe [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[59],"tags":[],"class_list":["post-847","post","type-post","status-publish","format-standard","hentry","category-settori-classi-ii"],"_links":{"self":[{"href":"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-json\/wp\/v2\/posts\/847","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-json\/wp\/v2\/comments?post=847"}],"version-history":[{"count":16,"href":"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-json\/wp\/v2\/posts\/847\/revisions"}],"predecessor-version":[{"id":2416,"href":"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-json\/wp\/v2\/posts\/847\/revisions\/2416"}],"wp:attachment":[{"href":"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-json\/wp\/v2\/media?parent=847"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-json\/wp\/v2\/categories?post=847"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.tecnologiaedidattica.com\/blog\/wp-json\/wp\/v2\/tags?post=847"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}