{"id":1056,"date":"2025-10-22T01:06:59","date_gmt":"2025-10-22T01:06:59","guid":{"rendered":"https:\/\/www.lichtgitter.cz\/en\/?post_type=produkty&#038;p=1056"},"modified":"2026-03-17T13:42:59","modified_gmt":"2026-03-17T13:42:59","slug":"sp-stair-treads","status":"publish","type":"produkty","link":"https:\/\/www.lichtgitter.cz\/en\/blog\/produkty\/resistance-welded-gratings-sp\/sp-stair-treads\/","title":{"rendered":"SP Stair Treads"},"content":{"rendered":"\n<div class=\"wp-block-uagb-container uagb-block-6b0857d5 alignfull uagb-is-root-container\"><div class=\"uagb-container-inner-blocks-wrap\">\n<div class=\"wp-block-uagb-advanced-heading uagb-block-f5756313\"><h2 class=\"uagb-heading-text\"><strong>Stair treads made of forge-welded SP gratings<\/strong><\/h2><\/div>\n\n\n\n<p><strong>SP stair treads<\/strong>&nbsp;are manufactured&nbsp;<strong>in accordance with DIN 24531-1<\/strong>. For standardized stair treads, load-bearing&nbsp;<strong>bars with dimensions 30 x 2 mm, 30 x 3 mm and 40 x 3 mm<\/strong>&nbsp;are used. A perforated anti-slip nosing is welded to the front edge of the treads, which not only reduces the risk of slipping but also increases the static load capacity of the tread and visually highlights its front edge. The treads are equipped with side plates with a thickness of 3 mm and bolt holes. Standard tread dimensions are also supplied with an alternative side plate design \u2013 see image (more information in the attachment below). The tread dimensions and the hole spacing in the side plate are listed in the following table.<\/p>\n\n\n\n<div class=\"wp-block-uagb-image uagb-block-9e18734e 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:\/\/www.lichtgitter.cz\/en\/wp-content\/uploads\/sites\/4\/2025\/10\/Schod_SP_s_alternativ_bocnici.jpg ,https:\/\/www.lichtgitter.cz\/en\/wp-content\/uploads\/sites\/4\/2025\/10\/Schod_SP_s_alternativ_bocnici.jpg 780w, https:\/\/www.lichtgitter.cz\/en\/wp-content\/uploads\/sites\/4\/2025\/10\/Schod_SP_s_alternativ_bocnici.jpg 360w\" sizes=\"auto, (max-width: 480px) 150px\" src=\"https:\/\/www.lichtgitter.cz\/en\/wp-content\/uploads\/sites\/4\/2025\/10\/Schod_SP_s_alternativ_bocnici.jpg\" alt=\"Obr. Schodi\u0161\u0165ov\u00fd stupe\u0148, vlevo s alternativn\u00edm proveden\u00ed bo\u010dn\u00ed desky\" class=\"uag-image-1057\" width=\"702\" height=\"496\" title=\"Schod_SP_s_alternativ_bocnici\" loading=\"lazy\" role=\"img\"\/><figcaption class=\"uagb-image-caption\">Fig. Stair tread, left with alternative side plate design<\/figcaption><\/figure><\/div>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-74852435\"><h2 class=\"uagb-heading-text\">Standard dimensions of stair treads<\/h2><\/div>\n\n\n\n<figure class=\"wp-block-table responsive-table\"><table class=\"has-fixed-layout\"><tbody><tr><td rowspan=\"2\">\n<div><strong>length <br><\/strong><\/div>\n<strong> L<\/strong><\/td><td><strong>+0 <br><\/strong><\/td><td rowspan=\"2\"><strong>&nbsp; [mm]<br><\/strong><\/td><td rowspan=\"2\">\n<div style=\"text-align: center;\"><strong>width<br>B<\/strong><\/div>\n<\/td><td><strong>+5<\/strong><\/td><td rowspan=\"2\"><strong>[mm]<\/strong><\/td><td rowspan=\"2\">\n<div style=\"text-align: center;\"><strong>bearing bar<br>[mm]<\/strong><\/div>\n<\/td><td rowspan=\"2\"><strong>b<br>[mm]<\/strong><\/td><td rowspan=\"2\"><strong>c<br>[mm]<\/strong><\/td><td rowspan=\"2\"><strong>d<br>[mm]<\/strong><\/td><td rowspan=\"2\"><strong>e<br>[mm]<\/strong><\/td><td rowspan=\"2\"><strong>Permissible<br>load<br>[kN]<\/strong><\/td><td rowspan=\"2\"><strong>weight<br>[kg\/piece]<\/strong><\/td><\/tr><tr><td><strong>-3<\/strong><\/td><td><strong>-5<\/strong><\/td><\/tr><tr><td colspan=\"3\" rowspan=\"3\">600<\/td><td colspan=\"3\">240<\/td><td rowspan=\"6\">30&#215;2<\/td><td>55<\/td><td>70<\/td><td>120<\/td><td>85<\/td><td rowspan=\"18\">1.5<\/td><td>4.2<\/td><\/tr><tr><td colspan=\"3\">270<\/td><td>55<\/td><td>70<\/td><td>150<\/td><td>85<\/td><td>4.6<\/td><\/tr><tr><td colspan=\"3\">305<\/td><td>55<\/td><td>70<\/td><td>180<\/td><td>90<\/td><td>5.1<\/td><\/tr><tr><td colspan=\"3\" rowspan=\"3\">800<\/td><td colspan=\"3\">240<\/td><td>55<\/td><td>70<\/td><td>120<\/td><td>85<\/td><td>5.3<\/td><\/tr><tr><td colspan=\"3\">270<\/td><td>55<\/td><td>70<\/td><td>150<\/td><td>85<\/td><td>5.9<\/td><\/tr><tr><td colspan=\"3\">305<\/td><td>55<\/td><td>70<\/td><td>180<\/td><td>90<\/td><td>6.5<\/td><\/tr><tr><td colspan=\"3\" rowspan=\"3\">600<\/td><td colspan=\"3\">240<\/td><td rowspan=\"9\">30&#215;3<br>&nbsp;<\/td><td>55<\/td><td>70<\/td><td>120<\/td><td>85<\/td><td>5.2<\/td><\/tr><tr><td colspan=\"3\">270<\/td><td>55<\/td><td>70<\/td><td>150<\/td><td>85<\/td><td>5.8<\/td><\/tr><tr><td colspan=\"3\">305<\/td><td>55<\/td><td>70<\/td><td>180<\/td><td>90<\/td><td>6.5<\/td><\/tr><tr><td colspan=\"3\" rowspan=\"3\">800<\/td><td colspan=\"3\">240<\/td><td>55<\/td><td>70<\/td><td>120<\/td><td>85<\/td><td>6.6<\/td><\/tr><tr><td colspan=\"3\">270<\/td><td>55<\/td><td>70<\/td><td>150<\/td><td>85<\/td><td>7.5<\/td><\/tr><tr><td colspan=\"3\">305<\/td><td>55<\/td><td>70<\/td><td>180<\/td><td>90<\/td><td>8.3<\/td><\/tr><tr><td colspan=\"3\" rowspan=\"3\">1000<\/td><td colspan=\"3\">240<\/td><td>55<\/td><td>70<\/td><td>120<\/td><td>85<\/td><td>8.2<\/td><\/tr><tr><td colspan=\"3\">270<\/td><td>55<\/td><td>70<\/td><td>150<\/td><td>85<\/td><td>9.1<\/td><\/tr><tr><td colspan=\"3\">305<\/td><td>55<\/td><td>70<\/td><td>180<\/td><td>90<\/td><td>10.2<\/td><\/tr><tr><td colspan=\"3\" rowspan=\"3\">1200<\/td><td colspan=\"3\">240<\/td><td rowspan=\"3\">40&#215;3<\/td><td>55<\/td><td>70<\/td><td>120<\/td><td>85<\/td><td>11.7<\/td><\/tr><tr><td colspan=\"3\">270<\/td><td>55<\/td><td>70<\/td><td>150<\/td><td>85<\/td><td>13.2<\/td><\/tr><tr><td colspan=\"3\">305<\/td><td>55<\/td><td>70<\/td><td>180<\/td><td>90<\/td><td>14.7<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>Other dimensions available upon request.<\/strong><\/p>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-ff597f3f\"><h2 class=\"uagb-heading-text\">For fastening stair treads we supply:<\/h2><\/div>\n\n\n\n<figure class=\"wp-block-table custom-table --narrow\"><table class=\"has-fixed-layout\"><tbody><tr><td>&nbsp;Hexagon head bolts<\/td><td>M 12 x 35<\/td><td>ISO 4017 (DIN 933)<\/td><\/tr><tr><td>&nbsp;Hexagon nuts<\/td><td>M 12<\/td><td>ISO 4032 (DIN 934)<\/td><\/tr><tr><td>&nbsp;Washers (2 pcs)<\/td><td>M12<\/td><td>ISO 7089 (DIN 125A)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-9574cd50\"><h2 class=\"uagb-heading-text\">Installation of stair treads<\/h2><\/div>\n\n\n\n<p>During installation, it is necessary to check whether there is excessive clearance between the side plate of the stair tread and the stringer due to tolerances of these structures. If so, this clearance must be eliminated using spacer washers before bolting the stair treads to the stringers. This prevents damage to the welds of the stair treads.<\/p>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-8d309973\"><h2 class=\"uagb-heading-text\">Attachments<\/h2><\/div>\n\n\n\n<div class=\"wp-block-file\"><a id=\"wp-block-file--media-7f659075-f878-4adb-a1b8-0d5367a5544d\" href=\"https:\/\/www.lichtgitter.cz\/en\/wp-content\/uploads\/sites\/4\/2025\/10\/Schodistove-stupne-standardni-s-tabulkou-rozmeru-2.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">\n     Standard stair treads with dimension table&nbsp;<strong>(*.pdf)<\/strong>\n  <\/a><\/div>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Stair treads made of forge-welded SP gratings SP stair treads&nbsp;are manufactured&nbsp;in accordance with DIN 24531-1. For standardized stair treads, load-bearing&nbsp;bars with dimensions 30 x 2 mm, 30 x 3 mm and 40 x 3 mm&nbsp;are used. A perforated anti-slip nosing is welded to the front edge of the treads, which not only reduces the risk [&hellip;]<\/p>\n","protected":false},"featured_media":1558,"parent":164,"menu_order":2,"template":"","categories":[],"tags":[60],"class_list":["post-1056","produkty","type-produkty","status-publish","has-post-thumbnail","hentry","tag-odporove-svarovane-rosty-sp"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>SP Stair Treads - EN | lichtgitter.cz<\/title>\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.lichtgitter.cz\/en\/blog\/produkty\/resistance-welded-gratings-sp\/sp-stair-treads\/\" \/>\n<meta property=\"og:locale\" content=\"cs_CZ\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"SP Stair Treads - EN | lichtgitter.cz\" \/>\n<meta property=\"og:description\" content=\"Stair treads made of forge-welded SP gratings SP stair treads&nbsp;are manufactured&nbsp;in accordance with DIN 24531-1. For standardized stair treads, load-bearing&nbsp;bars with dimensions 30 x 2 mm, 30 x 3 mm and 40 x 3 mm&nbsp;are used. 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treads made of forge-welded SP gratings SP stair treads&nbsp;are manufactured&nbsp;in accordance with DIN 24531-1. For standardized stair treads, load-bearing&nbsp;bars with dimensions 30 x 2 mm, 30 x 3 mm and 40 x 3 mm&nbsp;are used. A perforated anti-slip nosing is welded to the front edge of the treads, which not only reduces the risk&hellip;","_links":{"self":[{"href":"https:\/\/www.lichtgitter.cz\/en\/wp-json\/wp\/v2\/produkty\/1056","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lichtgitter.cz\/en\/wp-json\/wp\/v2\/produkty"}],"about":[{"href":"https:\/\/www.lichtgitter.cz\/en\/wp-json\/wp\/v2\/types\/produkty"}],"up":[{"embeddable":true,"href":"https:\/\/www.lichtgitter.cz\/en\/wp-json\/wp\/v2\/produkty\/164"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.lichtgitter.cz\/en\/wp-json\/wp\/v2\/media\/1558"}],"wp:attachment":[{"href":"https:\/\/www.lichtgitter.cz\/en\/wp-json\/wp\/v2\/media?parent=1056"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lichtgitter.cz\/en\/wp-json\/wp\/v2\/categories?post=1056"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lichtgitter.cz\/en\/wp-json\/wp\/v2\/tags?post=1056"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}