{"id":3463,"date":"2023-01-04T17:31:46","date_gmt":"2023-01-04T16:31:46","guid":{"rendered":"https:\/\/www.gt-engineering.it\/normative-tecniche\/%tipologia_normativa%\/guard-rails-en-14122-eng\/"},"modified":"2023-07-26T08:59:25","modified_gmt":"2023-07-26T07:59:25","slug":"guard-rails-en-14122-eng","status":"publish","type":"normativa_tecnica","link":"https:\/\/www.gt-engineering.it\/en\/technical-standards\/en-iso-standards\/en-iso-14122-3-eng\/guard-rails-en-14122-eng\/","title":{"rendered":"CAP 7-8: Guard-rails"},"content":{"rendered":"\n\n    \n        <section\n            data-name=\"Contenuto testuale con immagine\"\n            class=\"bow-gte-testo-media u-spacer-base\"\n            id=\"\"\n        >\n            \n<div class=\"o-text-media px-side-spacer sm:px-side-spacer-sm lg:px-side-spacer-tablet 2xl:px-side-spacer-desktop flex flex-wrap items-start md:block\">\n\n    \n        \n                    <div\n                class=\"h-auto mb-6 md:mb-4 lg:mb-8 xl:mb-9 float-left mr-6 md:mr-4 lg:mr-8 xl:mr-9  overflow-hidden shadow-content-image w-full md:w-1\/3\"\n            >\n                \r\n\r\n    \r\n        \r\n            \r\n                \r\n                    <picture\r\n                        class=\"\"\r\n                                            >\r\n                                                                                                        <source\r\n                                media=\"(max-width: 150px)\"\r\n                                width=\"150\"\r\n                                height=\"150\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/CAP-7-8-Guard-rails-150x150.jpg\"\r\n                                type=\"image\/jpeg\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 225px)\"\r\n                                width=\"225\"\r\n                                height=\"300\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/CAP-7-8-Guard-rails-225x300.jpg\"\r\n                                type=\"image\/jpeg\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 768px)\"\r\n                                width=\"768\"\r\n                                height=\"1024\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/CAP-7-8-Guard-rails-768x1024.jpg\"\r\n                                type=\"image\/jpeg\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 768px)\"\r\n                                width=\"768\"\r\n                                height=\"1024\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/CAP-7-8-Guard-rails-768x1024.jpg\"\r\n                                type=\"image\/jpeg\"\r\n                            \/>\r\n                                                                            <img\r\n                            class=\"a-image transparent border-image h-auto  w-full\"\r\n                                                        srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/CAP-7-8-Guard-rails-scaled.jpg\"\r\n                                                        title=\"CAP 7-8 Guard-rails\"\r\n                                                        type=\"image\/jpeg\"\r\n                        \/>\r\n                    <\/picture>\r\n\r\n                \r\n\r\n                    \r\n    \r\n            <\/div>\n        \n                    <div class=\"relative w-full\">\n                \n<div class=\"a-text font-text text-base normal mt-8 first:mt-0 space-y-4\">\n    <p style=\"text-align: justify;\">The guard-rail is necessary and mandatory when fall risk from height higher than 500 mm is present, or if the distance between the walking platform and a neighbouring structure (machinery or wall) is greater than 180 mm. The standard specifies that the guard-rail minimum height shall be 1100 mm, with handrails lower than 1100 mm (parallel to the walking line). A baseboard or toe-plate shall be provided when the gap between the platform and neighbouring structure is greater than 20 mm.<\/p>\n<p style=\"text-align: justify;\">Fall risk shall be reduced using knee rail (maximum distance 500mm) or vertical uprights (maximum distance 180mm); in the case of interrupted guard-rail the clear space between the two stanchions must be between 50 and 120 mm (between 50 and 80 mm in the case of segments at rounded ends).<br \/>&nbsp;<\/p>\n<\/div>            <\/div>\n        \n        \n                <div class=\"clear-both\"><\/div>\n        \n\n    <\/div>\n        <\/section>\n\n    \n\n\n\n\n    \n        <section\n            data-name=\"Contenuto testuale con immagine\"\n            class=\"bow-gte-testo-media u-spacer-base\"\n            id=\"\"\n        >\n            \n<div class=\"o-text-media px-side-spacer sm:px-side-spacer-sm lg:px-side-spacer-tablet 2xl:px-side-spacer-desktop flex flex-wrap items-start md:block\">\n\n    \n                    <div class=\"mb-6 relative w-full md:mb-4 lg:mb-8 xl:mb-9\">\n                \n        <div                class=\"m-headings\"\n            >\n    \n    \n<h4 class=\"a-heading text-primary font-heading text-2xl lg:text-3xl xl:text-4xl normal mt-2 first:mt-0\">\n                    How to design guard-rails for stairs and step ladders    <\/h4>\n        <\/div>\n                <\/div>\n        \n                    <div\n                class=\"h-auto mb-6 md:mb-4 lg:mb-8 xl:mb-9 float-left mr-6 md:mr-4 lg:mr-8 xl:mr-9  overflow-hidden shadow-content-image w-full md:w-1\/2\"\n            >\n                \r\n\r\n    \r\n        \r\n            \r\n                \r\n                    <picture\r\n                        class=\"\"\r\n                                            >\r\n                                                                                                        <source\r\n                                media=\"(max-width: 150px)\"\r\n                                width=\"150\"\r\n                                height=\"150\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/parapetti-scale-a-castello1-150x150.png.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 300px)\"\r\n                                width=\"300\"\r\n                                height=\"161\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/parapetti-scale-a-castello1-300x161.png.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 508px)\"\r\n                                width=\"508\"\r\n                                height=\"273\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/parapetti-scale-a-castello1.png.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 508px)\"\r\n                                width=\"508\"\r\n                                height=\"273\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/parapetti-scale-a-castello1.png.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                            <img\r\n                            class=\"a-image transparent border-image h-auto  w-full\"\r\n                                                        srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/parapetti-scale-a-castello1.png.webp\"\r\n                                                        title=\"parapetti-scale-a-castello1\"\r\n                                                        type=\"image\/webp\"\r\n                        \/>\r\n                    <\/picture>\r\n\r\n                \r\n\r\n                    \r\n    \r\n            <\/div>\n        \n                    <div class=\"relative w-full\">\n                \n<div class=\"a-text font-text text-base normal mt-8 first:mt-0 space-y-4\">\n    <p style=\"text-align: justify;\">The standard also covers design of guard-rails for stairs and step ladders, mandatory for falling height greater than 500 mm or in presence of gaps between walking platform and a neighbouring structure (machinery or wall) wider than 120 mm. The guard rails must have a knee rail and a handrail on both sides, prioritizing non-interrupting rails. The handrail height shall be between 900 and 1000 mm, measured from the nose of the step; the handle shall be clear of obstacles within 75 mm, with a diameter between 25 and 50 mm.<\/p>\n<p style=\"text-align: justify;\">For step ladders, the guard-rail start shall not be higher than 1000 mm measured vertically from the bottom of the ladder, the &quot;X&quot; distance value between the handrail and the supporting structure varies according to the slope of the ladder.&nbsp;<br \/>&nbsp;<\/p>\n<\/div>            <\/div>\n        \n        \n                <div class=\"clear-both\"><\/div>\n        \n\n    <\/div>\n        <\/section>\n\n    \n\n\n\n\n    \n        <section\n            data-name=\"Contenuto testuale con immagine\"\n            class=\"bow-gte-testo-media u-spacer-base\"\n            id=\"\"\n        >\n            \n<div class=\"o-text-media px-side-spacer sm:px-side-spacer-sm lg:px-side-spacer-tablet 2xl:px-side-spacer-desktop flex flex-wrap items-start md:block\">\n\n    \n                    <div class=\"mb-6 relative w-full md:mb-4 lg:mb-8 xl:mb-9\">\n                \n        <div                class=\"m-headings\"\n            >\n    \n    \n<h4 class=\"a-heading text-primary font-heading text-2xl lg:text-3xl xl:text-4xl normal mt-2 first:mt-0\">\n                    Design of the access gate    <\/h4>\n        <\/div>\n                <\/div>\n        \n        \n                    <div class=\"relative w-full\">\n                \n<div class=\"a-text font-text text-base normal mt-8 first:mt-0 space-y-4\">\n    <p style=\"text-align: justify;\">Any access gate shall meet the requirements of the adjacent guard-rails, except for the toe plate which is not required. Self-closing gates shall be held in position without being locked, designed to open easily onto the platform or floor and close against a firm stop to prevent accidental falls.<br \/>&nbsp;<\/p>\n<\/div>            <\/div>\n        \n        \n                <div class=\"clear-both\"><\/div>\n        \n\n    <\/div>\n        <\/section>\n\n    \n\n\n\n\n    \n        <section\n            data-name=\"Contenuto testuale con immagine\"\n            class=\"bow-gte-testo-media u-spacer-base\"\n            id=\"\"\n        >\n            \n<div class=\"o-text-media px-side-spacer sm:px-side-spacer-sm lg:px-side-spacer-tablet 2xl:px-side-spacer-desktop flex flex-wrap items-start md:block\">\n\n    \n                    <div class=\"mb-6 relative w-full md:mb-4 lg:mb-8 xl:mb-9\">\n                \n        <div                class=\"m-headings\"\n            >\n    \n    \n<h4 class=\"a-heading text-primary font-heading text-2xl lg:text-3xl xl:text-4xl normal mt-2 first:mt-0\">\n                    Verification of safety requirements    <\/h4>\n        <\/div>\n                <\/div>\n        \n        \n                    <div class=\"relative w-full\">\n                \n<div class=\"a-text font-text text-base normal mt-8 first:mt-0 space-y-4\">\n    <p style=\"text-align: justify;\">In addition to the verification of steps failure resistance, the standard dictates a similar verification for the deformation &quot;f&quot; of the guard-rail. As shown in the below image, the test (which can be replaced by a theoretical calculation) shall be carried out at a guard-rail element with three stanchions, applying transverse load at central stanchions (Position 1) or between the central and the lateral stanchions (Position 2). The guard-rail is preloaded with a load Fp= 75N\/m *L (L is distance between the vertical stanchions) for one minute, after which the discharge takes place.<\/p>\n<p style=\"text-align: justify;\">During the test, a load Fu= 300 N\/m*L is applied, and the resulting deformation shall not be greater than 30 mm. Once the deformation is measured, the load is increased to Fs= Fu*&gamma; (&gamma; is coefficient of the material, equal to 1.75 for steel and aluminum alloys). Once the guard rail is discharged, the deformation must be&nbsp;<strong>[14122-3:2016 &#8211;&nbsp;&sect; 8.2.3]<\/strong>:<\/p>\n<blockquote>\n<p style=\"text-align: justify;\">1.&nbsp;&nbsp; &nbsp;&lt;3%*H for load applied at the central stanchion (Position 1).<br \/>2.&nbsp;&nbsp; &nbsp;&lt;3%*L for load applied between the central and the lateral stanchions (Position 2).<br \/>&nbsp;<\/p>\n<\/blockquote>\n<\/div>            <\/div>\n        \n        \n                <div class=\"clear-both\"><\/div>\n        \n\n    <\/div>\n        <\/section>\n\n    \n\n\n\n\n    \n        <section\n            data-name=\"Contenuto testuale con immagine\"\n            class=\"bow-gte-testo-media u-spacer-base\"\n            id=\"\"\n        >\n            \n<div class=\"o-text-media px-side-spacer sm:px-side-spacer-sm lg:px-side-spacer-tablet 2xl:px-side-spacer-desktop flex flex-wrap items-start md:block\">\n\n    \n        \n                    <div\n                class=\"h-auto mb-6 md:mb-4 lg:mb-8 xl:mb-9 float-left mr-6 md:mr-4 lg:mr-8 xl:mr-9  overflow-hidden shadow-content-image w-full md:w-1\/2\"\n            >\n                \r\n\r\n    \r\n        \r\n            \r\n                \r\n                    <picture\r\n                        class=\"\"\r\n                                            >\r\n                                                                                                        <source\r\n                                media=\"(max-width: 150px)\"\r\n                                width=\"150\"\r\n                                height=\"150\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/verifica-parapetti1-150x150.png.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 300px)\"\r\n                                width=\"300\"\r\n                                height=\"113\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/verifica-parapetti1-300x113.png.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 584px)\"\r\n                                width=\"584\"\r\n                                height=\"220\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/verifica-parapetti1.png.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 584px)\"\r\n                                width=\"584\"\r\n                                height=\"220\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/verifica-parapetti1.png.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                            <img\r\n                            class=\"a-image transparent border-image h-auto  w-full\"\r\n                                                        srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/verifica-parapetti1.png.webp\"\r\n                                                        title=\"verifica-parapetti1\"\r\n                                                        type=\"image\/webp\"\r\n                        \/>\r\n                    <\/picture>\r\n\r\n                \r\n\r\n                    \r\n    \r\n            <\/div>\n        \n        \n        \n                <div class=\"clear-both\"><\/div>\n        \n\n    <\/div>\n        <\/section>\n\n    \n","protected":false},"excerpt":{"rendered":"<p>The guard-rail is necessary and mandatory when fall risk from height higher than 500 mm is present, or if the distance between the walking platform and a neighb&#8230;<\/p>\n","protected":false},"author":1,"featured_media":40357,"parent":3239,"menu_order":2,"template":"","meta":{"_acf_changed":false,"footnotes":""},"normative-tecniche":[57,164],"class_list":["post-3463","normativa_tecnica","type-normativa_tecnica","status-publish","has-post-thumbnail","hentry","tipologia_normativa-en-iso-standards","tipologia_normativa-normes-en-iso"],"acf":{"sottotitolo":"Guard rails","allegati":null},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>standard for guard rails<\/title>\n<meta name=\"description\" content=\"The guard-rail is necessary and mandatory when 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