{"id":2075,"date":"2026-04-27T11:54:36","date_gmt":"2026-04-27T11:54:36","guid":{"rendered":"https:\/\/protasoftware.com\/fr\/wiki\/materiau\/"},"modified":"2026-04-27T11:54:36","modified_gmt":"2026-04-27T11:54:36","slug":"materiau","status":"publish","type":"wiki","link":"https:\/\/protasoftware.com\/fr\/support\/manuels-techniques\/materiau\/","title":{"rendered":"Mat\u00e9riau"},"content":{"rendered":"<h2 style=\"margin: 0.83em 0px;padding: 0px\" class=\"toc_anchors\" id=\"Pre-Analysis_Tab\">Onglet Pr\u00e9-analyse<\/h2>\n<div><span class=\"colour\">Les classes de b\u00e9ton et d&rsquo;acier sont affect\u00e9es \u00e0 chaque type d&rsquo;\u00e9l\u00e9ment depuis l&rsquo;onglet&nbsp;<span>\u201c<\/span><\/span> <i><span class=\"colour\">Pr\u00e9-analyse<\/span><\/i> <span class=\"colour\"><span>\u201d<\/span>&nbsp;du formulaire&nbsp;<span>\u201c<\/span><\/span> <i><span class=\"colour\">Analyse du&nbsp;b\u00e2timent<\/span><\/i> <span class=\"colour\"><span>\u201d<\/span>.<\/span> <\/div>\n<div> <img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-5047b2c5bb355fcc29231b4e0f8f070e.png\" style=\"padding: 0px;max-width: 100%\" data-zdeskdocid=\"img_07439458923944664\" class=\"docsimage\" data-zdeskdocselectedclass=\"original\" \/><\/div>\n<div><\/div>\n<div>\n<div><span><span class=\"colour\"><b><u>Poids volumique de l&rsquo;\u00e9l\u00e9ment<\/u><\/b><\/span><\/span> <b><u><br \/><\/u><\/b><\/div>\n<div><span class=\"colour\">Le poids volumique du b\u00e9ton saisi dans ce champ sert \u00e0 calculer le poids propre des poteaux, voiles, poutres, dalles et fondations.<\/span> <\/div>\n<div><\/div>\n<div><span><span class=\"colour\"><b><u>Poids volumique des hourdis<\/u><\/b><\/span><\/span> <b><u><br \/><\/u><\/b><\/div>\n<div><span class=\"colour\">Le poids volumique des hourdis sert \u00e0 calculer le poids propre des hourdis de remplissage des dalles nervur\u00e9es.&nbsp;<\/span><\/div>\n<\/div>\n<div><\/div>\n<div><span class=\"colour\">Depuis cet onglet, appuyez sur le bouton&nbsp;<span>\u201c<\/span><\/span> <i><span class=\"colour\">Modifier les mat\u00e9riaux<\/span><\/i> <span class=\"colour\"><span>\u201d<\/span>&nbsp;du champ&nbsp;<span>\u201c<\/span><\/span> <i><span class=\"colour\">Mat\u00e9riau<\/span><\/i> <span class=\"colour\"><span>\u201d<\/span>.<\/span> <\/div>\n<div><span class=\"colour\"><\/span><img decoding=\"async\" data-zdeskdocselectedclass=\"original\" class=\"docsimage\" data-zdeskdocid=\"img_9357884550500877\" style=\"padding: 0px;max-width: 100%;width: 687px;height: auto\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-66c26c1c207b466aa0ca4c0cc80b18f4.png\" \/> <\/div>\n<div><\/div>\n<div><span class=\"colour\">Les classes de mat\u00e9riaux de ProtaStructure proviennent des normes. Vous d\u00e9finissez facilement une nouvelle classe avec le bouton&nbsp;<span>\u201c<\/span><\/span> <i><span class=\"colour\">Ajouter<\/span><\/i> <span class=\"colour\"><span>\u201d<\/span>&nbsp;ou<\/span> <i><span class=\"colour\">&nbsp;<span>&quot;+&quot;<\/span><\/span><\/i> <span class=\"colour\"><span>&nbsp;<\/span>.&nbsp;<\/span><\/div>\n<div><\/div>\n<div><span class=\"colour\">Deux jeux de mat\u00e9riaux sont pr\u00e9d\u00e9finis par d\u00e9faut :<\/span> <\/div>\n<ol>\n<li style=\"margin: 0px;padding: 0px;list-style-type: disc\" class=\"sty__8wi5g6__cls\"><span class=\"colour\"><span><b>Mat\u00e9riaux par d\u00e9faut<\/b><\/span><b>&nbsp;\u2013<\/b> utilis\u00e9s pour tous les \u00e9l\u00e9ments des \u00e9tages de superstructure (\u00c9tage 1 et au-dessus)<\/span><\/li>\n<li style=\"margin: 0px;padding: 0px;list-style-type: disc\" class=\"sty__1oq1kl__cls\"><span class=\"colour\"><span><b>Plancher de fondation<\/b><\/span><b>&nbsp;\u2013<\/b> utilis\u00e9 pour les \u00e9l\u00e9ments de fondation mod\u00e9lis\u00e9s \u00e0 l&rsquo;\u00c9tage&nbsp;0<\/span><\/li>\n<\/ol>\n<div><\/div>\n<div><span class=\"colour\">L&rsquo;option&nbsp;<span><i><b>\u201c\u00c9tage \u00e0 mat\u00e9riau diff\u00e9rent\u201d<\/b>&nbsp;<\/i><\/span>permet de donner des mat\u00e9riaux diff\u00e9rents aux \u00e9l\u00e9ments d&rsquo;un \u00e9tage pr\u00e9cis.<\/span> <\/div>\n<div><span class=\"colour\"><img decoding=\"async\" style=\"border: 0px none;padding: 0px;max-width: 100%;width: 263px;height: auto;cursor: pointer\" data-zdeskdocselectedclass=\"original\" data-zdeskdocid=\"img_8187798631159002\" class=\"docsimage sty__bzm517__cls\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/09\/hc-23435305547a.png\" \/><\/span> <\/div>\n<div>\n<div><span style=\"margin: 10px 0px;position: relative;padding: 10px 10px 10px 40px\" class=\"KB_New_Editor_Highlights sty__q5kiyy__cls\"><img decoding=\"async\" alt=\"\" style=\"border: 0px none;position: absolute;left: 12px;top: 14px;width: 15px;max-width: 100%;height: auto;cursor: pointer\" class=\"sty__sytyyp__cls\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-70fcd3f50999204eaff9c3314b7a81fb.png\" data-type=\"non-resize\" data-image=\"contentStyle\" \/><span class=\"colour\">Le mat\u00e9riau peut aussi \u00eatre d\u00e9fini pour chaque \u00e9l\u00e9ment s\u00e9par\u00e9ment. S\u00e9lectionnez un \u00e9l\u00e9ment &gt; clic droit &gt;&nbsp;<span><b>\u201c<\/b><\/span><\/span><i><span class=\"colour\"><b>Modifier la section\/le mat\u00e9riau<\/b><\/span><\/i><span class=\"colour\"><span><b>\u201d<\/b><\/span><b>.<\/b><\/span><\/span><\/div>\n<\/div>\n<h3 style=\"padding: 0px;margin: 1em 0px\" class=\"toc_anchors\" id=\"Concrete_Grade\"><span class=\"colour\">Classe de b\u00e9ton<\/span><\/h3>\n<div><span class=\"colour\">ProtaStructure permet de choisir des classes de b\u00e9ton diff\u00e9rentes selon le type d&rsquo;\u00e9l\u00e9ment. Vous d\u00e9finissez s\u00e9par\u00e9ment les classes de b\u00e9ton des poteaux, poutres, dalles, dalles nervur\u00e9es et fondations.<\/span> <\/div>\n<div><\/div>\n<div><span class=\"colour\">Pour choisir la classe de b\u00e9ton d&rsquo;un type d&rsquo;\u00e9l\u00e9ment, appuyez sur le bouton \u00e0 c\u00f4t\u00e9 de son libell\u00e9. La liste des classes de b\u00e9ton s&rsquo;affiche. Apr\u00e8s avoir choisi une classe, cochez l&rsquo;option<span><i>&nbsp;<b>\u201cAppliquer \u00e0 tous les types d&rsquo;\u00e9l\u00e9ments\u201d<\/b>&nbsp;<\/i><\/span>pour utiliser la m\u00eame classe partout.<\/span> <\/div>\n<div><img decoding=\"async\" data-zdeskdocselectedclass=\"original\" class=\"docsimage\" data-zdeskdocid=\"img_3867498037282915\" style=\"padding: 0px;max-width: 100%;width: 730px;height: auto\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-9d6c1657710c0b17ddadbbcf19745648.png\" \/> <\/div>\n<div><\/div>\n<div><span class=\"colour\">Pour d\u00e9finir une nouvelle classe de b\u00e9ton, appuyez sur le bouton&nbsp;<\/span> <i><span class=\"colour\">\u201cAjouter\u201d<\/span><\/i> <span class=\"colour\">&nbsp;ou&nbsp;<\/span> <i><span class=\"colour\">&quot;+&quot;<\/span><\/i> <span class=\"colour\">.<span>&nbsp;<\/span>Pour supprimer une classe existante, s\u00e9lectionnez-la dans le tableau et appuyez sur le bouton&nbsp;<span><i>\u201cSupprimer\u201d&nbsp;<\/i><\/span>ou&nbsp;<span>&quot;<\/span><\/span> <i><span class=\"colour\">X<\/span><\/i> <span class=\"colour\"><span>&quot;<\/span>.<\/span><\/div>\n<div>\n<div><span style=\"margin: 10px 0px;position: relative;padding: 10px 10px 10px 40px\" class=\"KB_New_Editor_Highlights sty__dh2bzb__cls\"><img decoding=\"async\" alt=\"\" style=\"border: 0px none;position: absolute;left: 12px;top: 14px;width: 15px;max-width: 100%;height: auto;cursor: pointer\" class=\"sty__h2ujnm__cls\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-9354cb614911df42869678620d809163.png\" data-type=\"non-resize\" data-image=\"contentStyle\" \/> <\/p>\n<div>Les champs de la liste des classes de b\u00e9ton sont modifiables. S\u00e9lectionnez une cellule pour saisir une nouvelle valeur.<\/div>\n<p><\/span><\/div>\n<\/div>\n<div><span class=\"colour\"><\/p>\n<div><span style=\"margin: 10px 0px;position: relative;padding: 10px 10px 10px 40px\" class=\"KB_New_Editor_Highlights sty__g5kiba__cls\"><img decoding=\"async\" alt=\"\" style=\"border: 0px none;position: absolute;left: 12px;top: 14px;width: 15px;max-width: 100%;height: auto;cursor: pointer\" class=\"sty__jjf7e4__cls\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-d71979fef7305bb3e348aeba0e377d85.png\" data-type=\"non-resize\" data-image=\"contentStyle\" \/> <\/p>\n<div>Dans la liste des classes de b\u00e9ton, la r\u00e9sistance caract\u00e9ristique correspond \u00e0 : <\/div>\n<ol>\n<li style=\"margin: 0px;padding: 0px;list-style-type: disc\" class=\"sty__f1ljzg__cls\"><b>La r\u00e9sistance sur cube<\/b> du b\u00e9ton pour le mod\u00e8le de norme britannique<\/li>\n<li style=\"margin: 0px;padding: 0px;list-style-type: disc\" class=\"sty__ve151r__cls\"><b>La r\u00e9sistance sur cylindre<\/b> du b\u00e9ton pour les mod\u00e8les Eurocode et ACI.<\/li>\n<\/ol>\n<p><\/span><\/div>\n<p><\/span><\/div>\n<div><span class=\"colour\">Pour l&rsquo;analyse et le calcul des \u00e9l\u00e9ments, la r\u00e9sistance de calcul d&rsquo;un mat\u00e9riau est la r\u00e9sistance caract\u00e9ristique divis\u00e9e par le&nbsp;<span>\u201c<\/span><\/span> <i><span class=\"colour\">Coefficient de mat\u00e9riau<\/span><\/i> <span class=\"colour\"><span>\u201d<\/span>. Ce coefficient est d\u00e9fini dans le champ&nbsp;<span>\u201c<\/span><\/span> <i><span class=\"colour\">Coeff. mat\u00e9riau<\/span><\/i> <span class=\"colour\"><span>\u201d<\/span>.<\/span> <\/div>\n<div>\n<div><span style=\"margin: 10px 0px;position: relative;padding: 10px 10px 10px 40px\" class=\"KB_New_Editor_Highlights sty__olgy98__cls\"><img decoding=\"async\" alt=\"\" style=\"border: 0px none;position: absolute;left: 12px;top: 14px;width: 15px;max-width: 100%;height: auto;cursor: pointer\" class=\"sty__4ph8s7__cls\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-70fcd3f50999204eaff9c3314b7a81fb.png\" data-type=\"non-resize\" data-image=\"contentStyle\" \/><span class=\"colour\">Le module d&rsquo;\u00e9lasticit\u00e9 des classes de b\u00e9ton est calcul\u00e9 avec la formule&nbsp;<\/span><span class=\"colour\"><span class=\"colour\"><span class=\"size\"><span style=\"font-size: 16px\" class=\"size\">Ec = Ko + 0.2 fcu.<\/span><\/span><\/span><\/span><\/span><\/div>\n<\/div>\n<div><span class=\"colour\">Apr\u00e8s avoir choisi une classe de b\u00e9ton, fermez le formulaire en cliquant sur le bouton<span><i>&nbsp;\u201cOK\u201d&nbsp;<\/i><\/span>.<\/span> <\/div>\n<div><\/div>\n<h3 style=\"padding: 0px;margin: 1em 0px\" class=\"toc_anchors\" id=\"Reinforcement_Bar_Grade\"><span class=\"colour\">Classe des armatures<\/span><\/h3>\n<div><span class=\"colour\">ProtaStructure permet de choisir des classes d&rsquo;acier diff\u00e9rentes selon le type d&rsquo;\u00e9l\u00e9ment. Vous d\u00e9finissez s\u00e9par\u00e9ment les classes d&rsquo;acier des poteaux, poutres, dalles, dalles nervur\u00e9es, fondations et cadres.<\/span><\/div>\n<div>\n<div><span style=\"margin: 10px 0px;position: relative;padding: 10px 10px 10px 40px\" class=\"KB_New_Editor_Highlights sty__hmobsl__cls\"><img decoding=\"async\" alt=\"\" style=\"border: 0px none;position: absolute;left: 12px;top: 14px;width: 15px;max-width: 100%;height: auto;cursor: pointer\" class=\"sty__81ijg7__cls\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-84684afec9d7dff860307ba694b300ec.png\" data-type=\"non-resize\" data-image=\"contentStyle\" \/> <\/p>\n<div><span class=\"colour\">Vous pouvez choisir&nbsp;<\/span> <i><span class=\"colour\">\u201cClasse 460-Type2\u201d<\/span><\/i> <span class=\"colour\">&nbsp;pour calculer tous les \u00e9l\u00e9ments, mais&nbsp;<\/span> <i><span class=\"colour\">Classe 485-Fabric<\/span><\/i> <span class=\"colour\">&nbsp;pour les dalles.<\/span><\/div>\n<p><\/span><\/div>\n<\/div>\n<div><span class=\"colour\">Pour s\u00e9lectionner une nuance d&rsquo;armature pour un type d&rsquo;\u00e9l\u00e9ment, appuyez sur le bouton \u00e0 c\u00f4t\u00e9 de l&rsquo;\u00e9tiquette du type d&rsquo;\u00e9l\u00e9ment. La Liste des nuances d&rsquo;acier s&rsquo;affiche. Cochez l&rsquo;option&nbsp;<\/span> <i><span class=\"colour\">\u201cAppliquer \u00e0 tous les \u00e9l\u00e9ments de cette classe de mat\u00e9riau dans cet \u00e9tage\u201d<\/span><\/i> <span class=\"colour\">&nbsp;pour utiliser la m\u00eame nuance pour tous les types d&rsquo;\u00e9l\u00e9ments d&rsquo;un \u00e9tage. Cette option convient si vous voulez calculer tous les \u00e9l\u00e9ments de l&rsquo;\u00e9tage avec les m\u00eames armatures.<\/span> <span class=\"colour\"><br \/><\/span><\/div>\n<div><span class=\"colour\"><br \/><\/span><\/div>\n<div><span class=\"colour\">Pour d\u00e9finir une nouvelle nuance d&rsquo;acier, appuyez sur le bouton&nbsp;<\/span> <i><span class=\"colour\">\u201cAjouter\u201d<\/span><\/i> <span class=\"colour\">&nbsp;.&nbsp;<\/span> <span><span class=\"colour\">Vous pouvez choisir le syst\u00e8me imp\u00e9rial ou le syst\u00e8me SI pour les nouvelles armatures.<\/span><\/span><\/div>\n<div><\/div>\n<div><img decoding=\"async\" data-zdeskdocselectedclass=\"\" class=\"docsimage\" data-zdeskdocid=\"img_47363770542670136\" style=\"padding: 0px;max-width: 100%;width: 864px;height: auto\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-3e4c7cda5e1372831ae30a092748bbca.png\" \/> <\/div>\n<div><span class=\"colour\">Les champs de la Liste des nuances d&rsquo;acier sont modifiables. S\u00e9lectionnez une cellule pour saisir une nouvelle valeur.<\/span><\/div>\n<div><span class=\"colour\"><\/p>\n<div><span style=\"margin: 10px 0px;position: relative;padding: 10px 10px 10px 40px\" class=\"KB_New_Editor_Highlights\"><img decoding=\"async\" alt=\"\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-9354cb614911df42869678620d809163.png\" data-type=\"non-resize\" style=\"position: absolute;left: 12px;top: 14px;width: 15px;max-width: 100%\" data-image=\"contentStyle\" \/> <\/p>\n<div>La Liste des nuances d&rsquo;acier indique les limites d&rsquo;\u00e9lasticit\u00e9 caract\u00e9ristiques des nuances. Pour l&rsquo;analyse et le calcul des \u00e9l\u00e9ments, la r\u00e9sistance de calcul d&rsquo;un mat\u00e9riau d\u00e9coule de la r\u00e9sistance caract\u00e9ristique divis\u00e9e par le&nbsp; <i>\u201cCoefficient de mat\u00e9riau\u201d<\/i>. Ce coefficient est d\u00e9fini dans le champ&nbsp; <i>\u201cCoeff. mat\u00e9riau\u201d<\/i>&nbsp;.<\/div>\n<p><\/span><\/div>\n<p><\/span><\/div>\n<div><span class=\"colour\">Apr\u00e8s avoir s\u00e9lectionn\u00e9 une nuance d&rsquo;acier, vous pouvez fermer l&rsquo;onglet en cliquant sur le bouton&nbsp;<\/span> <i><span class=\"colour\">\u201cOK\u201d<\/span><\/i> <span class=\"colour\">&nbsp;.<\/span><\/div>\n<div><span style=\"margin: 10px 0px;position: relative;padding: 10px 10px 10px 40px\" class=\"KB_New_Editor_Highlights\"><img decoding=\"async\" alt=\"\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-70fcd3f50999204eaff9c3314b7a81fb.png\" data-type=\"non-resize\" style=\"position: absolute;left: 12px;top: 14px;width: 15px;max-width: 100%\" data-image=\"contentStyle\" \/> <\/p>\n<div><span class=\"colour\">Si le&nbsp;<\/span> <i><span class=\"colour\">\u201cType de nervure\u201d<\/span><\/i> <span class=\"colour\">&nbsp;d&rsquo;une nuance d&rsquo;acier est&nbsp;<i>&quot;Type 0&quot;<\/i>, les barres re\u00e7oivent automatiquement des crochets \u00e0 leurs extr\u00e9mit\u00e9s. Pour obtenir des barres droites, d\u00e9cochez la colonne&nbsp;<i>\u201cCrochet\u201d<\/i>&nbsp;.<\/span> <\/div>\n<p style=\"margin: 0.5em 0px;padding: 0px;line-height: 20px\" class=\"sty__xunerz__cls\"><span class=\"colour\"><span style=\"line-height: normal\" class=\"font\"><span style=\"font-size: 14px\" class=\"size\"><\/span><\/span><\/span><img decoding=\"async\" data-zdeskdocselectedclass=\"\" data-zdeskdocid=\"img_0876585371068408\" style=\"border: 0px none;padding: 0px;max-width: 100%;cursor: pointer;width: 305px;height: auto\" class=\"sty__t3nh43__cls docsimage\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/09\/hc-a532af8cc382.png\" \/><\/p>\n<p><\/span><\/div>\n<div>\n<h3 style=\"padding: 0px;margin: 1em 0px\" class=\"toc_anchors\" id=\"Determining_Bars_Sizes_to_be_used\"><span class=\"colour\">D\u00e9termination des diam\u00e8tres de barres \u00e0 utiliser<\/span><\/h3>\n<div><span class=\"colour\">Le tableau des armatures s&rsquo;ouvre en cliquant sur le bouton <b><i>\u201cModifier\u2026\u201d<\/i><\/b> de la bo\u00eete de dialogue <b>Propri\u00e9t\u00e9s du mat\u00e9riau d&rsquo;armature.<\/b><\/span><\/div>\n<\/div>\n<div><img decoding=\"async\" data-zdeskdocselectedclass=\"\" class=\"docsimage\" data-zdeskdocid=\"img_9948730313620844\" style=\"padding: 0px;max-width: 100%;width: 1186px;height: auto\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-c32bf7288aed789bb0bb799b72bc663a.png\" \/> <\/div>\n<div><\/div>\n<div>Dans ce tableau des armatures, vous choisissez les diam\u00e8tres d&rsquo;armature utilis\u00e9s pour calculer les \u00e9l\u00e9ments avec le mat\u00e9riau d&rsquo;armature concern\u00e9.<\/div>\n<div><\/div>\n<div><img decoding=\"async\" data-zdeskdocselectedclass=\"\" class=\"docsimage\" data-zdeskdocid=\"img_0014175027757785674\" style=\"padding: 0px;max-width: 100%;width: 1098px;height: auto\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-d408972229d9cc36c8d49fb46276b127.png\" \/> <\/div>\n<div><b><u><span class=\"colour\">Panneau de filtre<\/span><\/u><\/b> <\/div>\n<div><span class=\"colour\">Vous pouvez s\u00e9lectionner ici certains \u00e9l\u00e9ments pour afficher les diam\u00e8tres d&rsquo;armature retenus pour ces \u00e9l\u00e9ments. Si vous filtrez sur les poteaux, seuls les diam\u00e8tres retenus pour calculer les poteaux apparaissent dans l&rsquo;onglet \u00c9l\u00e9ments.<\/span> <\/div>\n<div><\/div>\n<div><b><u>Diam\u00e8tre d&rsquo;armature et section d&rsquo;armature<\/u><\/b> <\/div>\n<div>Ces champs de saisie re\u00e7oivent le diam\u00e8tre et la section de l&rsquo;armature. La valeur saisie ici sera utilis\u00e9e dans le calcul,<\/div>\n<div><\/div>\n<div><b><u><span class=\"colour\">Onglet \u00c9l\u00e9ments<\/span><\/u><\/b> <\/div>\n<div>Dans l&rsquo;onglet \u00c9l\u00e9ments, les symboles des colonnes repr\u00e9sentent les \u00e9l\u00e9ments (voiles, dalles, poutres, etc.). Les diam\u00e8tres d&rsquo;armature figurent en lignes. Le tableau ci-dessous indique les \u00e9l\u00e9ments repr\u00e9sent\u00e9s par chaque symbole : <\/div>\n<div>\n<div><\/div>\n<table style=\"font-size: 12px;text-align: initial;border: 1px solid;height: 704px;max-width: 100%\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td style=\"border-bottom: 1px solid;width: 175px;height: 25px\">\n<div style=\"text-align: center\" class=\" align-center\"><span style=\"font-size: 16px\" class=\"size\"><b>Poteau<\/b><\/span><\/div>\n<\/td>\n<td style=\"border-bottom: 1px solid;border-left: 1px solid;width: 43px;height: 25px\">\n<div style=\"text-align: center\" class=\" align-center\"><img decoding=\"async\" alt=\"\" data-zdeskdocselectedclass=\"\" class=\"docsimage\" data-zdeskdocid=\"img_3374835151441524\" style=\"padding: 0px;max-width: 100%;width: 39px;height: auto\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-1300d4510bdd225ba4c4b9bfaccac4b5.png\" \/> <span style=\"font-size: 16px\" class=\"size\"><br \/><\/span><\/div>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"border-bottom: 1px solid;width: 175px;height: 25px\">\n<div style=\"text-align: center\" class=\" align-center\"><span style=\"font-size: 16px\" class=\"size\"><span style=\"font-size: 16px\" class=\"size\"><b>Voile&nbsp;<\/b><\/span><\/span><\/div>\n<\/td>\n<td style=\"border-bottom: 1px solid;border-left: 1px solid;width: 43px;height: 25px\">\n<div style=\"text-align: center\" class=\" align-center\"><img decoding=\"async\" style=\"text-align: center;padding: 0px;max-width: 100%;width: 33.5781px;height: auto\" data-zdeskdocselectedclass=\"\" class=\"docsimage\" data-zdeskdocid=\"img_7207999829368377\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-7ddffb01d51549e0bb4ccb65ee37a8de.png\" \/><\/div>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"border-bottom: 1px solid;width: 175px;height: 25px\">\n<div style=\"text-align: center\" class=\" align-center\"><span style=\"font-size: 16px\" class=\"size\"><b>Poutre<\/b><\/span><\/div>\n<\/td>\n<td style=\"border-bottom: 1px solid;border-left: 1px solid;width: 43px;height: 25px\">\n<div style=\"text-align: center\" class=\" align-center\"><span style=\"font-size: 16px\" class=\"size\">&nbsp;<\/span> <img decoding=\"async\" data-zdeskdocselectedclass=\"\" class=\"docsimage\" data-zdeskdocid=\"img_9916668395231718\" style=\"padding: 0px;max-width: 100%;width: 38.3906px;height: auto\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-5a96655925e9edd3a313c9383e7f0e70.png\" \/><\/div>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"border-bottom: 1px solid;width: 175px;height: 25px\">\n<div style=\"text-align: center\" class=\" align-center\"><span style=\"font-size: 16px\" class=\"size\"><b>Dalle<\/b><\/span><\/div>\n<\/td>\n<td style=\"border-bottom: 1px solid;border-left: 1px solid;width: 43px;height: 25px\">\n<div style=\"text-align: center\" class=\" align-center\"><span style=\"font-size: 16px\" class=\"size\"><img decoding=\"async\" data-zdeskdocselectedclass=\"\" class=\"docsimage\" data-zdeskdocid=\"img_5127404199050243\" style=\"padding: 0px;max-width: 100%;width: 33.9844px;height: auto\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-bf0fcc5d6ef38e4c321f34aa19f220ef.png\" \/><br \/><\/span><\/div>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"border-bottom: 1px solid;width: 175px;height: 25px;text-align: center;padding: 4px\">\n<div style=\"text-align: center\" class=\" align-center\"><span style=\"font-size: 16px\" class=\"size\"><b>Dalle nervur\u00e9e<\/b><\/span><\/div>\n<\/td>\n<td style=\"border-bottom: 1px solid;border-left: 1px solid;width: 43px;height: 25px\">\n<div style=\"text-align: center\" class=\" align-center\"><span style=\"font-size: 16px\" class=\"size\"><img decoding=\"async\" data-zdeskdocselectedclass=\"\" class=\"docsimage\" data-zdeskdocid=\"img_23884960493976126\" style=\"padding: 0px;max-width: 100%;width: 35.2656px;height: auto\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-7193a366cc9a8cf7c3c6c4d25c1d64c8.png\" \/><br \/><\/span><\/div>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"border-bottom: 1px solid;height: 25px;width: 175px\">\n<div style=\"text-align: center\" class=\" align-center\"><span style=\"font-size: 16px\" class=\"size\"><b>Semelle<\/b><\/span><\/div>\n<\/td>\n<td style=\"border-bottom: 1px solid;border-left: 1px solid;height: 25px;width: 43px\">\n<div style=\"text-align: center\" class=\" align-center\"><span style=\"font-size: 16px\" class=\"size\"><img decoding=\"async\" data-zdeskdocselectedclass=\"\" class=\"docsimage\" data-zdeskdocid=\"img_6529007207999864\" style=\"padding: 0px;max-width: 100%;width: 34.3438px;height: auto\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-9b86810e88bea789a714ab3b3a69511d.png\" \/><br \/><\/span><\/div>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"border-bottom: 1px solid;width: 175px;height: 25px\">\n<div style=\"text-align: center\" class=\" align-center\"><span style=\"font-size: 16px\" class=\"size\"><b>Cadres<\/b><\/span><\/div>\n<\/td>\n<td style=\"border-bottom: 1px solid;border-left: 1px solid;width: 43px;height: 25px\">\n<div style=\"text-align: center\" class=\" align-center\"><span style=\"font-size: 16px\" class=\"size\"><img decoding=\"async\" data-zdeskdocselectedclass=\"\" class=\"docsimage\" data-zdeskdocid=\"img_28526394508689434\" style=\"padding: 0px;max-width: 100%;width: 30.4219px;height: auto\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-d3dc0ea06cd53a093c630e2f299d5485.png\" \/><br \/><\/span><\/div>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"border-bottom: 1px solid;width: 175px;height: 25px\">\n<div style=\"text-align: center\" class=\" align-center\"><span style=\"font-size: 16px\" class=\"size\"><b>Armatures longitudinales d&rsquo;\u00e2me<\/b><\/span><\/div>\n<\/td>\n<td style=\"border-bottom: 1px solid;border-left: 1px solid;width: 43px;height: 25px\">\n<div style=\"text-align: center\" class=\" align-center\"><span style=\"font-size: 16px\" class=\"size\"><img decoding=\"async\" data-zdeskdocselectedclass=\"\" class=\"docsimage\" data-zdeskdocid=\"img_13880566789913007\" style=\"padding: 0px;max-width: 100%;width: 34.7656px;height: auto\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-5c45fdd3bc4cf44ab6d256c562c8115f.png\" \/><br \/><\/span><\/div>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"border-bottom: 1px solid;width: 175px;height: 25px\">\n<div style=\"text-align: center\" class=\" align-center\"><span style=\"font-size: 16px\" class=\"size\"><b>Armatures horizontales d&rsquo;\u00e2me<\/b><\/span><\/div>\n<\/td>\n<td style=\"border-bottom: 1px solid;border-left: 1px solid;width: 43px;height: 25px\">\n<div style=\"text-align: center\" class=\" align-center\"><span style=\"font-size: 16px\" class=\"size\"><img decoding=\"async\" data-zdeskdocselectedclass=\"\" class=\"docsimage\" data-zdeskdocid=\"img_8990875499325399\" style=\"padding: 0px;max-width: 100%;width: 33.2969px;height: auto\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-3f478b78132de25d9cda25ce439a30f3.png\" \/><br \/><\/span><\/div>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 175px;height: 25px\">\n<div style=\"text-align: center\" class=\" align-center\"><span style=\"font-size: 16px\" class=\"size\"><b>G\u00e9n\u00e9rique<\/b><\/span><\/div>\n<\/td>\n<td style=\"border-left: 1px solid;width: 43px;height: 25px\">\n<div style=\"text-align: center\" class=\" align-center\"><img decoding=\"async\" data-zdeskdocselectedclass=\"\" class=\"docsimage\" data-zdeskdocid=\"img_09478492087029666\" style=\"padding: 0px;max-width: 100%;width: 38.3438px;height: auto\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-6a90ff1f1af43a99cc94d05871809c2e.png\" \/> <\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div>\n<div><span style=\"margin: 10px 0px;position: relative;padding: 10px 10px 10px 40px\" class=\"KB_New_Editor_Highlights\"><img decoding=\"async\" alt=\"\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-9354cb614911df42869678620d809163.png\" data-type=\"non-resize\" style=\"position: absolute;left: 12px;top: 14px;width: 15px\" data-image=\"contentStyle\" \/><\/p>\n<div>Le type \u00ab G\u00e9n\u00e9rique \u00bb sert aux armatures libres de ProtaDetails, lorsque l&rsquo;\u00e9l\u00e9ment structurel correspondant n&rsquo;est pas d\u00e9fini.<\/div>\n<p><\/span><\/div>\n<\/div>\n<div>Le symbole &quot;\u2714&quot; dans la case indique que le diam\u00e8tre d&rsquo;armature est s\u00e9lectionn\u00e9 pour cet \u00e9l\u00e9ment. Pour calculer les poteaux avec des armatures de 8 mm, cochez la case situ\u00e9e \u00e0 l&rsquo;intersection du poteau et du diam\u00e8tre d&rsquo;armature.&nbsp; <\/div>\n<div><img decoding=\"async\" data-zdeskdocselectedclass=\"\" class=\"docsimage\" data-zdeskdocid=\"img_9062118497421974\" style=\"padding: 0px;max-width: 100%;width: 1045px;height: auto\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-7593b3c9faebc806b0b7133f4e9e9fca.png\" \/> <\/div>\n<div><\/div>\n<div><\/div>\n<div><span style=\"margin: 10px 0px;position: relative;padding: 10px 10px 10px 40px\" class=\"KB_New_Editor_Highlights\"><img decoding=\"async\" alt=\"\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-84684afec9d7dff860307ba694b300ec.png\" data-type=\"non-resize\" style=\"position: absolute;left: 12px;top: 14px;width: 15px;max-width: 100%\" data-image=\"contentStyle\" \/> <\/p>\n<div><b>Les diam\u00e8tres d&rsquo;armature s\u00e9lectionn\u00e9s servent au calcul des \u00e9l\u00e9ments uniquement avec le mat\u00e9riau d&rsquo;armature concern\u00e9.&nbsp;<\/b> L&rsquo;exemple ci-dessous pr\u00e9sente deux mat\u00e9riaux d&rsquo;armature avec des diam\u00e8tres s\u00e9lectionn\u00e9s diff\u00e9rents : <\/div>\n<ol>\n<li style=\"list-style-type: disc\">Grade 500 (Type 2) : les diam\u00e8tres de 8 mm et 10 mm sont s\u00e9lectionn\u00e9s pour calculer les poteaux <\/li>\n<li style=\"list-style-type: disc\">Grade 460 (Type 2) : le diam\u00e8tre de 10 mm est s\u00e9lectionn\u00e9 pour calculer les poteaux.<\/li>\n<\/ol>\n<div>Si Grade 500 (Type 2) est le mat\u00e9riau d&rsquo;armature des poteaux, ceux-ci sont calcul\u00e9s avec des armatures de 8 mm et 10 mm. Si vous passez \u00e0 Grade 460 (Type 2), les poteaux ne sont plus calcul\u00e9s avec du 10 mm. Seul le diam\u00e8tre de 8 mm est s\u00e9lectionn\u00e9 pour Grade 460 (Type 2).<\/div>\n<p><\/span><\/div>\n<\/div>\n<h3 style=\"padding: 0px;margin: 1em 0px\" class=\"toc_anchors\" id=\"Steel_Grade\"><span class=\"colour\">Nuance d&rsquo;acier<\/span><br \/><\/h3>\n<div>ProtaStructure permet de s\u00e9lectionner diff\u00e9rentes nuances d&rsquo;acier pour les treillis, les pannes, les lisses et les contreventements.&nbsp; <span>Pour choisir une nuance d&rsquo;acier pour un type d&rsquo;\u00e9l\u00e9ment, cliquez sur le mat\u00e9riau acier afin d&rsquo;afficher la Liste des nuances d&rsquo;acier.<\/span><\/div>\n<div><img decoding=\"async\" style=\"padding: 0px;max-width: 100%\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-88e34fa346d9eac2f28d94a2ecbd565f.png\" \/> <\/div>\n<div><\/div>\n<div><span class=\"colour\">Pour d\u00e9finir une nouvelle nuance d&rsquo;acier, appuyez sur le bouton&nbsp;\u201cAjouter\u201d&nbsp;ou&nbsp;&quot;+&quot;.&nbsp;Les champs de la Liste des nuances d&rsquo;acier sont modifiables. S\u00e9lectionnez une cellule pour saisir une nouvelle valeur.<\/span><\/div>\n<div>\n<div><span style=\"margin: 10px 0px;position: relative;padding: 10px 10px 10px 40px\" class=\"KB_New_Editor_Highlights\"><img decoding=\"async\" alt=\"\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-9354cb614911df42869678620d809163.png\" data-type=\"non-resize\" style=\"position: absolute;left: 12px;top: 14px;width: 15px;max-width: 100%\" data-image=\"contentStyle\" \/> <\/p>\n<div><span class=\"colour\">Dans la Liste des nuances d&rsquo;acier, la r\u00e9sistance de calcul d&rsquo;un mat\u00e9riau est \u00e9gale \u00e0 la r\u00e9sistance caract\u00e9ristique divis\u00e9e par le&nbsp;\u201cCoefficient de mat\u00e9riau\u201d. Ce coefficient (coefficient de s\u00e9curit\u00e9) est d\u00e9fini dans le champ&nbsp;\u201cCoeff. mat\u00e9riau\u201d.<\/span><\/div>\n<p><\/span><\/div>\n<\/div>\n<div><span class=\"colour\">Apr\u00e8s avoir s\u00e9lectionn\u00e9 une nuance d&rsquo;acier, fermez la fen\u00eatre en cliquant sur le bouton&nbsp;\u201cOK\u201d.<\/span><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Onglet Pr\u00e9-analyse Les classes de b\u00e9ton et d&rsquo;acier sont affect\u00e9es \u00e0 chaque type d&rsquo;\u00e9l\u00e9ment depuis l&rsquo;onglet&nbsp;\u201c Pr\u00e9-analyse \u201d&nbsp;du formulaire&nbsp;\u201c Analyse du&nbsp;b\u00e2timent \u201d. Poids volumique de&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"template":"","meta":{"_whitepaper_youtube_videos":"","_whitepaper_youtube_url":"","_whitepaper_youtube_thumbnail":"","footnotes":""},"categories":[35],"whitepaper_topic":[],"whitepaper_product":[],"whitepaper_type":[],"class_list":["post-2075","wiki","type-wiki","status-publish","hentry","category-pre-analysis"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.9 (Yoast SEO v27.9) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Mat\u00e9riau - Prota Software<\/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:\/\/protasoftware.com\/fr\/support\/manuels-techniques\/materiau\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Prota Software\" \/>\n<meta property=\"og:description\" content=\"Onglet Pr\u00e9-analyse Les classes de b\u00e9ton et d&rsquo;acier sont affect\u00e9es \u00e0 chaque type d&rsquo;\u00e9l\u00e9ment depuis l&rsquo;onglet&nbsp;\u201c Pr\u00e9-analyse \u201d&nbsp;du formulaire&nbsp;\u201c Analyse du&nbsp;b\u00e2timent \u201d. 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