{"id":7365,"date":"2024-12-02T16:47:34","date_gmt":"2024-12-02T15:47:34","guid":{"rendered":"https:\/\/blog.structuralia.com\/como-cacular-huella-y-contrahuella-escalera"},"modified":"2026-04-07T10:18:04","modified_gmt":"2026-04-07T08:18:04","slug":"como-cacular-huella-y-contrahuella-escalera","status":"publish","type":"post","link":"https:\/\/blog.structuralia.com\/en\/como-cacular-huella-y-contrahuella-escalera\/","title":{"rendered":"The tread and riser: essential elements in staircase design"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_84 counter-hierarchy ez-toc-counter ez-toc-white ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\"><\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Contents\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/blog.structuralia.com\/en\/como-cacular-huella-y-contrahuella-escalera\/#Huella_y_contrahuella_como_calcularlas_para_construir_una_escalera\" >Tread and riser: How to Calculate Them When Building a Staircase<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/blog.structuralia.com\/en\/como-cacular-huella-y-contrahuella-escalera\/#Partes_de_una_escalera\" >Parts of a Staircase<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/blog.structuralia.com\/en\/como-cacular-huella-y-contrahuella-escalera\/#%C2%BFComo_calcular_el_diseno_de_una_escalera\" >How do you calculate the design of a staircase?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/blog.structuralia.com\/en\/como-cacular-huella-y-contrahuella-escalera\/#Calculo_de_la_huella_y_contrahuella\" >Calculation of the tread and riser<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/blog.structuralia.com\/en\/como-cacular-huella-y-contrahuella-escalera\/#Calculo_de_la_longitud\" >Calculating the length<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/blog.structuralia.com\/en\/como-cacular-huella-y-contrahuella-escalera\/#Formulas_complementarias\" >Complementary Formulas<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<div id=\"hs_cos_wrapper_post_body\">\n<div class=\"jkit-post-content\" style=\"text-align: center;\">\n<p class=\"jkit-post-intro\" style=\"text-align: justify;\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\">The<span style=\"font-weight: bold;\"> tread and riser<\/span> must be calculated precisely for the functional design of a staircase. The <span style=\"font-weight: bold;\">Blondel's Law<\/span><span style=\"font-weight: normal;\"> This is the formula that's commonly used. Find out about this and more in this blog post.\u00a0<\/span><\/span><\/p>\n<h2 style=\"font-size: 30px; font-weight: bold; text-align: justify;\"><span class=\"ez-toc-section\" id=\"Huella_y_contrahuella_como_calcularlas_para_construir_una_escalera\"><\/span><span style=\"color: #b22b3b; font-family: Tahoma, Arial, Helvetica, sans-serif;\"><strong>Tread and riser: How to Calculate Them When Building a Staircase<\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\">The <strong>tread and riser<\/strong>, as parts of a <strong>staircase<\/strong>, are designed to connect spaces on different levels within a building and to serve as circulation elements.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\">Stairs are designed to<span style=\"text-decoration: underline;\"><span style=\"color: #ff3b49;\"><a style=\"color: #ff3b49;\" href=\"https:\/\/riunet.upv.es\/bitstream\/handle\/10251\/143938\/%c3%81lvarez%20-%20DISE%c3%91O%20Y%20C%c3%81LCULO%20DE%20UNA%20ESCALERA.pdf?sequence=1&amp;isAllowed=y\"> to offer <strong>safety and comfort<\/strong><\/a> a <\/span><\/span>those who use them. They are used in most buildings, so it is essential for any architect or engineer to know the method for their <strong>design and calculation<\/strong>.<\/span><\/p>\n<h2 style=\"font-size: 30px; font-weight: bold; text-align: justify;\"><span class=\"ez-toc-section\" id=\"Partes_de_una_escalera\"><\/span><span style=\"color: #b22b3b; font-family: Tahoma, Arial, Helvetica, sans-serif;\"><strong>Parts of a Staircase<\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<\/div>\n<p style=\"text-align: justify;\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\">The most important element is the <strong>step<\/strong> <strong>or step<\/strong>, consisting of two parts: the horizontal part, which is called <strong>footprint,<\/strong> and another vertical dimension that determines the height of the step, called <strong>riser<\/strong>. In addition to:<\/span><\/p>\n<ul>\n<li aria-level=\"1\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\">Start.<\/span><\/li>\n<li aria-level=\"1\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\">Plateau.<\/span><\/li>\n<li aria-level=\"1\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\">Rest.<\/span><\/li>\n<li aria-level=\"1\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\">Cantilever.<\/span><\/li>\n<li aria-level=\"1\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\">Railing.<\/span><\/li>\n<li aria-level=\"1\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\">Handrails.<\/span><\/li>\n<\/ul>\n<h2 style=\"font-size: 30px; font-weight: bold; text-align: justify;\"><\/h2>\n<h2 style=\"font-size: 30px; font-weight: bold; text-align: justify;\"><span class=\"ez-toc-section\" id=\"%C2%BFComo_calcular_el_diseno_de_una_escalera\"><\/span><span style=\"color: #b22b3b; font-family: Tahoma, Arial, Helvetica, sans-serif;\"><strong>How do you calculate the design of a staircase?<\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\">The first piece of information you need to know is the<strong> height<\/strong> the height difference that the staircase must bridge. Then, the <strong>pending<\/strong> from the staircase and the<strong> distance<\/strong> (or <strong>length<\/strong>) that will be needed.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\">The following will apply: <strong>Blondel's Law,<\/strong> whose formula makes it possible to determine the <strong>tread and riser<\/strong> how to use a ladder efficiently.<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\"><a href=\"https:\/\/reformaenergeticamalaga.es\/images\/como-calcular-escalera-calculadora.jpg\" rel=\"noopener\"><img decoding=\"async\" style=\"width: 485px; margin-left: auto; margin-right: auto; display: block;\" src=\"https:\/\/blog.structuralia.com\/wp-content\/uploads\/2024\/12\/como-calcular-escalera-calculadora.jpg\" alt=\"como-calcular-escalera-calculadora\" width=\"485\" \/><\/a><span style=\"font-size: 10px;\"><span style=\"font-style: italic;\">How to Calculate a Staircase. Source: <\/span><a style=\"font-style: italic;\" href=\"https:\/\/reformaenergeticamalaga.es\/images\/como-calcular-escalera-calculadora.jpg\" rel=\"noopener\">energy-reform-malaga<\/a><\/span><\/span><\/p>\n<h3 style=\"font-size: 24px; font-weight: bold; text-align: justify; padding-left: 40px;\"><span class=\"ez-toc-section\" id=\"Calculo_de_la_huella_y_contrahuella\"><\/span><span style=\"color: #ff3b49; font-family: Tahoma, Arial, Helvetica, sans-serif;\"><strong>Calculation of the tread and riser<\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify; padding-left: 40px;\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\">This calculation is defined by the following equation:\u00a0<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\"><strong><em>2 risers + 1 tread = 64 cm<\/em><\/strong><em>.<\/em><\/span><\/p>\n<p style=\"text-align: justify; padding-left: 40px;\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\">For example, if you want to build a staircase to go up one level that is 2.50 m high:<\/span><\/p>\n<p style=\"text-align: justify; padding-left: 40px;\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\">A riser is defined as the distance between <strong>18 and 19 centimeters<\/strong>, which is a recognized standard for comfort and safety. In this case, 18 cm will be used.<\/span><\/p>\n<p style=\"text-align: justify; padding-left: 40px;\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\">The <strong>number of steps<\/strong>:\u00a0<\/span><\/p>\n<p style=\"text-align: center; padding-left: 40px;\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\"><em>height (cm) \/ riser<\/em><em><br \/>\n<\/em><\/span><\/p>\n<p style=\"text-align: justify; padding-left: 40px;\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\">In this case:\u00a0<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\"><em>250 \/ 18 = 13.88\u00a0<\/em><\/span><\/p>\n<p style=\"padding-left: 40px;\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\">The decimal is rounded, so the staircase will have 14 steps.<\/span><\/p>\n<p style=\"text-align: justify; padding-left: 40px;\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\">It is <strong>Calculate the riser height<\/strong>:\u00a0<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\"><em>Height of the staircase in cm \/ Number of steps.<\/em><em><br \/>\n<\/em><\/span><\/p>\n<p style=\"text-align: justify; padding-left: 40px;\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\">In this example, it will be:<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\"><em>250 \/ 14 = 17.85 cm.<\/em><\/span><\/p>\n<p style=\"text-align: justify; padding-left: 40px;\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\">Now apply the formula:\u00a0<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\"><strong><em>tread width<\/em><\/strong><em> = 64 cm \u2013 (2 \u00d7 17.85)<\/em><\/span><\/p>\n<p style=\"text-align: justify; padding-left: 40px;\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\">Therefore, the tread width will be 28.30 cm.<\/span><\/p>\n<p style=\"text-align: justify; padding-left: 40px;\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\">As a result, you will have a staircase that has:<\/span><\/p>\n<h3 style=\"font-size: 24px; font-weight: bold; text-align: justify; padding-left: 40px;\"><span class=\"ez-toc-section\" id=\"Calculo_de_la_longitud\"><\/span><span style=\"color: #ff3b49; font-family: Tahoma, Arial, Helvetica, sans-serif;\"><strong>Calculating the length<\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify; padding-left: 40px;\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\">Now, it's time to calculate the length of the ladder and its slope:<\/span><\/p>\n<p style=\"text-align: justify; padding-left: 40px;\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\">For the <strong>length<\/strong>, the following formula is used:<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\"><strong><em>(Number of steps \u2013 1) \u00d7 (tread width \/ 100).<\/em><\/strong><\/span><\/p>\n<p style=\"text-align: justify; padding-left: 40px;\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\">When you substitute the values from the example, the calculation looks like this:<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\"><em>(14 \u2013 1) \u00d7 (28.30 \/ 100) = 3.68 meters.<\/em><\/span><\/p>\n<p style=\"text-align: justify; padding-left: 40px;\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\">To calculate the <strong>angle<\/strong>, the following function will be applied:<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\"><strong><em>Tangent arc = height of the staircase \/ length of the staircase<\/em><\/strong><\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\"><em>2.50 \/ 3.68 = 0.679<\/em><\/span><\/p>\n<p style=\"text-align: justify; padding-left: 40px;\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\">Then convert to degrees using a scientific calculator. In this example, the result is 34.19\u00b0.<\/span><\/p>\n<h3 style=\"font-size: 24px; font-weight: bold; text-align: justify; padding-left: 40px;\"><span class=\"ez-toc-section\" id=\"Formulas_complementarias\"><\/span><span style=\"color: #ff3b49; font-family: Tahoma, Arial, Helvetica, sans-serif;\"><strong>Complementary Formulas<\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify; padding-left: 40px;\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\">This formula works very well for optimal sequences. However, in the case of <strong>steep stairs<\/strong> and for low-traffic areas, we recommend using:\u00a0<\/span><\/p>\n<p style=\"text-align: center; padding-left: 40px;\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\"><em>2 risers + 1 tread = 63 cm.<\/em><\/span><\/p>\n<p style=\"text-align: justify; padding-left: 40px;\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\">In places that can accommodate <strong>wide stairs<\/strong>, mainly outdoors, the function changes to:\u00a0<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\"><em>2 risers + 1 tread = 65 cm.<\/em><\/span><\/p>\n<p style=\"text-align: justify; padding-left: 40px;\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\">In the graduate programs at <strong>Structuralia<\/strong> It is possible to explore the topic in greater depth and perform precise calculations to design and build all types of staircases, including those made of<span style=\"text-decoration: underline;\"><span style=\"color: #ff3b49;\"><a style=\"color: #ff3b49;\" href=\"https:\/\/blog.structuralia.com\/en\/escaleras-helicoidales-y-escaleras-de-caracol\/\"> <strong>spiral and helical<\/strong><\/a>.<\/span><\/span><\/span><\/p>\n<p style=\"padding-left: 40px; text-align: center;\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\"><img decoding=\"async\" style=\"width: 438px; margin-left: auto; margin-right: auto; display: block;\" src=\"https:\/\/blog.structuralia.com\/wp-content\/uploads\/2024\/12\/tulip-stair-2021-08-26-17-19-49-utc.jpg\" alt=\"tulip-stair-2021-08-26-17-19-49-utc\" width=\"438\" \/><span style=\"font-size: 10px;\"><em>Source: Envato<\/em><\/span>\u00a0<\/span><\/p>\n<hr \/>\n<p style=\"text-align: justify;\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\">The<a href=\"https:\/\/academy.structuralia.com\/masters\/master-bim-diseno-avanzado-arquitectura-interiores\"> <strong><span style=\"color: #0563c1; text-decoration: underline;\">\u00a0<\/span><\/strong><span style=\"text-decoration: underline;\"><span style=\"color: #ff3b49;\"><strong>Master's Degree in BIM for Advanced Interior Architecture Design<\/strong><\/span><\/span><\/a>, for example, trains professionals who can effectively handle the conceptualization, management, and development of any project.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\">In summary, staircases must meet a series of standards in order to function properly. The <strong>calculation of the total length<\/strong> and the <strong>step length<\/strong> It will depend on the total height and the number of steps. In the <strong>Blondel's Law<\/strong> There are variations to adapt it to the requirements of each location.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: Tahoma, Arial, Helvetica, sans-serif;\">On Structuralia <strong>We train professionals<\/strong> Experts in architecture and engineering who can tackle any building challenge, including the design, calculation of treads and risers, and construction of staircases for residential or industrial use.<\/span><\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>La huella y contrahuella deben calcularse con precisi\u00f3n para el dise\u00f1o funcional de una escalera. La Ley de Blondel es la f\u00f3rmula com\u00fanmente utilizada. Ent\u00e9rate de esto y m\u00e1s en este BlogPost.\u00a0 Huella y contrahuella, c\u00f3mo calcularlas para construir una escalera La huella y contrahuella, como partes de una escalera, est\u00e1n destinadas a unir espacios [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":5020,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_ayudawp_aiss_exclude":false,"_ayudawp_aiss_summary":"","_ayudawp_aiss_summary_provider":"","_ayudawp_aiss_summary_hash":"","footnotes":""},"categories":[267],"tags":[],"class_list":["post-7365","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-educacion-stem-ingenieria"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Huella y contrahuella, basicos para dise\u00f1o de una escalera<\/title>\n<meta name=\"description\" content=\"La huella y contrahuella deben calcularse con precisi\u00f3n para el dise\u00f1o funcional de una escalera. 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