{"id":18085,"date":"2026-06-22T11:10:20","date_gmt":"2026-06-22T10:10:20","guid":{"rendered":"https:\/\/buildzair.com\/?p=18085"},"modified":"2026-06-22T11:17:09","modified_gmt":"2026-06-22T10:17:09","slug":"guide-rpa2024","status":"publish","type":"post","link":"https:\/\/buildzair.com\/fr\/guide-rpa2024\/","title":{"rendered":"RPA 2024 en pratique \u2014 Tout ce que l&#8217;ing\u00e9nieur doit savoir"},"content":{"rendered":"<meta charset=\"UTF-8\">\n<meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n<title>Guide Pratique RPA 2024 \u2014 DTR BC 2.48<\/title>\n<style>\n@import url('https:\/\/fonts.googleapis.com\/css2?family=Inter:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&family=IBM+Plex+Mono:wght@400;500;600&display=swap');\n\n:root {\n  --green: #09a35c;\n  --green-dark: #077a44;\n  --green-light: #f0faf5;\n  --green-glow: rgba(9,163,92,0.11);\n  --page-bg: #f8f9fb;\n  --card-bg: #ffffff;\n  --card-bg2: #f3f6f9;\n  --border: #e5e7eb;\n  --border-hover: 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class=\"hero-badge\"><span><\/span>DTR BC 2.48 \u00b7 Approuv\u00e9 24 Juin 2024<\/div>\n    <h1>Guide Pratique<br>d&#8217;Application du <em>RPA 2024<\/em><\/h1>\n    <p class=\"hero-desc\">R\u00e8gles Parasismiques Alg\u00e9riennes \u2014 Synth\u00e8se op\u00e9rationnelle \u00e0 l&#8217;usage des ing\u00e9nieurs et bureaux d&#8217;\u00e9tudes techniques.<\/p>\n    <div class=\"hero-meta\">\n      \n      <span class=\"hero-chip\">BuilDzair.com<\/span>\n      <span class=\"hero-chip\">CGS \u00b7 Minist\u00e8re Habitat<\/span>\n    <\/div>\n  <\/div>\n<\/div>\n\n<!-- NAV -->\n<nav class=\"toc-bar\">\n  <a href=\"#sec1\">\u2460 G\u00e9n\u00e9ralit\u00e9s<\/a>\n  <a href=\"#sec2\">\u2461 Zonage sismique<\/a>\n  <a href=\"#sec3\">\u2462 Classification des sites<\/a>\n  <a href=\"#sec4\">\u2463 B\u00e2timents &amp; Importance<\/a>\n  <a href=\"#sec5\">\u2464 Force sismique (MSE)<\/a>\n  <a href=\"#sec6\">\u2465 B\u00e9ton arm\u00e9<\/a>\n  <a href=\"#sec7\">\u2466 Fondations<\/a>\n  <a href=\"#sec8\">\u2467 Recommandations<\/a>\n<\/nav>\n\n<div class=\"container content\">\n\n<!-- \u2460 G\u00c9N\u00c9RALIT\u00c9S -->\n<section class=\"section\" id=\"sec1\">\n  <div class=\"sec-head\">\n    <div class=\"sec-num\">01<\/div>\n    <div>\n      <h2>G\u00e9n\u00e9ralit\u00e9s \u2014 Objectifs &amp; Champ d&#8217;application<\/h2>\n      <small>Chapitre I \u00b7 Art. 1.1 \u00e0 1.4<\/small>\n    <\/div>\n  <\/div>\n\n  <div class=\"grid-2\">\n    <div class=\"card\">\n      <h3>\ud83c\udfaf Deux niveaux de performance<\/h3>\n      <p>Le RPA 2024 fixe les r\u00e8gles de conception et de calcul des constructions en zones sismiques selon :<\/p>\n      <ul style=\"margin-top:10px;padding-left:18px;font-size:14px;color:var(--text-secondary)\">\n        <li style=\"margin-bottom:7px\"><strong style=\"color:var(--text-primary)\">Non-effondrement<\/strong> \u2014 S\u00e9isme de p\u00e9riode de retour <strong>Tr = 475 ans<\/strong>, probabilit\u00e9 de d\u00e9passement Pr = 10% sur 50 ans.<\/li>\n        <li><strong style=\"color:var(--text-primary)\">Limitation des dommages<\/strong> \u2014 S\u00e9isme de p\u00e9riode de retour <strong>Tr = 95 ans<\/strong>, coefficient r\u00e9ducteur \u03bdA \u2248 0.5.<\/li>\n      <\/ul>\n    <\/div>\n    <div class=\"card\">\n      <h3>\u26a0\ufe0f Champ d&#8217;application<\/h3>\n      <p><strong>Applicable \u00e0 :<\/strong> toutes constructions courantes (habitations, services, production) en zones sismiques I \u00e0 VI.<\/p>\n      <p style=\"margin-top:10px\"><strong>Exclu :<\/strong> Centrales nucl\u00e9aires, ouvrages d&#8217;art (barrages, ponts, tunnels), r\u00e9seaux souterrains, b\u00e2timents &gt; 200 m sans longrines, Zone 0.<\/p>\n    <\/div>\n  <\/div>\n\n  <div class=\"alert alert-green\">\n    <span class=\"alert-icon\">\ud83d\udccb<\/span>\n    <span>Le RPA 2024 abroge et remplace le <strong>RPA 99\/version 2003<\/strong>. Il s&#8217;applique \u00e0 toute nouvelle \u00e9tude de projet d\u00e9pos\u00e9e <strong>4 mois apr\u00e8s la date de publication au Journal Officiel<\/strong> (arr\u00eat\u00e9 du 24 juin 2024). Tous les intervenants dans l&#8217;acte de b\u00e2tir sont tenus de l&#8217;appliquer.<\/span>\n  <\/div>\n<\/section>\n\n<!-- \u2461 ZONAGE SISMIQUE -->\n<section class=\"section\" id=\"sec2\">\n  <div class=\"sec-head\">\n    <div class=\"sec-num\">02<\/div>\n    <div>\n      <h2>Zonage sismique de l&#8217;Alg\u00e9rie<\/h2>\n      <small>Chapitre III \u00b7 \u00a7 3.1 et Annexe A<\/small>\n    <\/div>\n  <\/div>\n\n <!-- CARTE INT\u00c9GR\u00c9E -->\n<div class=\"map-block\">\n  <img decoding=\"async\" src=\"https:\/\/buildzair.com\/wp-content\/uploads\/2026\/06\/carte-zonage-algerie.png\"\n       alt=\"Classification sismique des wilayas d'Alg\u00e9rie \u2014 RPA 2024\"\n       loading=\"lazy\">\n  <div class=\"map-caption\">\n      \ud83d\uddfa\ufe0f <strong>Carte officielle RPA 2024<\/strong> \u2014 Classification sismique des wilayas d&#8217;Alg\u00e9rie (zones 0 \u00e0 VI). Source : DTR BC 2.48, CGS 2024.\n    <\/div>\n  <\/div>\n\n  <div class=\"alert alert-warn\">\n    <span class=\"alert-icon\">\u26a0\ufe0f<\/span>\n    <span><strong>Nouveaut\u00e9 RPA 2024 :<\/strong> La carte de zonage a \u00e9t\u00e9 r\u00e9vis\u00e9e. Plusieurs communes ont \u00e9t\u00e9 reclass\u00e9es dans des zones plus sismiques. <strong>Toujours v\u00e9rifier la zone exacte de votre commune dans l&#8217;Annexe A du DTR<\/strong> avant de commencer toute \u00e9tude.<\/span>\n  <\/div>\n\n  <div class=\"card\" style=\"padding:0;overflow:hidden\">\n    <table class=\"zone-table\">\n      <thead>\n        <tr>\n          <th>Zone<\/th>\n          <th>Niveau de sismicit\u00e9<\/th>\n          <th>Acc\u00e9l\u00e9ration Ak<\/th>\n          <th>Exemples de wilayas<\/th>\n        <\/tr>\n      <\/thead>\n      <tbody>\n        <tr><td><span class=\"zbadge z0\">Zone 0<\/span><\/td><td>Tr\u00e8s faible \u2014 RPA non applicable<\/td><td>&lt; 0.04 g<\/td><td>Tamanrasset, Adrar, Tindouf<\/td><\/tr>\n        <tr><td><span class=\"zbadge z1\">Zone I<\/span><\/td><td>Faible<\/td><td>0.07 g<\/td><td>Ouargla, Gharda\u00efa, B\u00e9char<\/td><\/tr>\n        <tr><td><span class=\"zbadge z2\">Zone II<\/span><\/td><td>Faible \u00e0 moyenne<\/td><td>0.10 g<\/td><td>S\u00e9tif, Tlemcen, M\u00e9d\u00e9a<\/td><\/tr>\n        <tr><td><span class=\"zbadge z3\">Zone III<\/span><\/td><td>Moyenne<\/td><td>0.15 g<\/td><td>Constantine, Oran, Tiaret<\/td><\/tr>\n        <tr><td><span class=\"zbadge z4\">Zone IV<\/span><\/td><td>Moyenne \u00e0 \u00e9lev\u00e9e<\/td><td>0.20 g<\/td><td>Alger nord, Blida, Boumerd\u00e8s<\/td><\/tr>\n        <tr><td><span class=\"zbadge z56\">Zone V<\/span><\/td><td>\u00c9lev\u00e9e<\/td><td>0.25 g<\/td><td>B\u00e9ja\u00efa, Jijel, Skikda, Annaba<\/td><\/tr>\n        <tr><td><span class=\"zbadge z56\">Zone VI<\/span><\/td><td>Tr\u00e8s \u00e9lev\u00e9e<\/td><td>0.30 g<\/td><td>Certaines communes du littoral est<\/td><\/tr>\n      <\/tbody>\n    <\/table>\n  <\/div>\n<\/section>\n\n<!-- \u2462 CLASSIFICATION DES SITES -->\n<section class=\"section\" id=\"sec3\">\n  <div class=\"sec-head\">\n    <div class=\"sec-num\">03<\/div>\n    <div>\n      <h2>Classification des sites (Sols)<\/h2>\n      <small>Chapitre III \u00b7 \u00a7 3.2 \u00b7 Tableau 3.2<\/small>\n    <\/div>\n  <\/div>\n\n  <p style=\"font-size:14px;color:var(--text-secondary);margin-bottom:16px\">Le RPA 2024 d\u00e9finit <strong>5 cat\u00e9gories de site<\/strong> bas\u00e9es sur les propri\u00e9t\u00e9s m\u00e9caniques des 30 premiers m\u00e8tres du sol. Le param\u00e8tre principal est la vitesse des ondes de cisaillement <strong>Vs30<\/strong>.<\/p>\n\n  <div class=\"card\" style=\"padding:0;overflow:hidden\">\n    <table class=\"site-table\">\n      <thead>\n        <tr><th>Classe<\/th><th>Description<\/th><th>Vs30 (m\/s)<\/th><th>qc30 (MPa)<\/th><th>N30 (SPT)<\/th><\/tr>\n      <\/thead>\n      <tbody>\n        <tr><td><strong>S1<\/strong> \u2014 Rocheux<\/td><td>Rocher ou formation g\u00e9ologique rigide, couche superficielle &lt; 5 m<\/td><td>&gt; 800<\/td><td>&gt; 10<\/td><td>\u2014<\/td><\/tr>\n        <tr><td><strong>S2<\/strong> \u2014 Ferme<\/td><td>Sable\/gravier tr\u00e8s dense, argile surconsolid\u00e9e, plusieurs dizaines de m\u00e8tres<\/td><td>360 \u2013 800<\/td><td>&gt; 15<\/td><td>&gt; 50<\/td><\/tr>\n        <tr><td><strong>S3<\/strong> \u2014 Meuble<\/td><td>Sable moyennement dense, argile moyennement raide<\/td><td>180 \u2013 360<\/td><td>1.5 \u2013 15<\/td><td>15 \u2013 50<\/td><\/tr>\n        <tr><td><strong>S4<\/strong> \u2014 Tr\u00e8s meuble<\/td><td>Sable l\u00e2che, argile molle ou \u2265 3 m d&#8217;argile molle<\/td><td>&lt; 180<\/td><td>&lt; 1.5<\/td><td>&lt; 15<\/td><\/tr>\n        <tr><td><strong>S5<\/strong> \u2014 Sp\u00e9cial<\/td><td>Investigations approfondies obligatoires (liqu\u00e9faction, pentes, sols organiques\u2026)<\/td><td colspan=\"3\" style=\"text-align:center;font-style:italic;color:var(--danger)\">\u00c9tudes sp\u00e9cifiques requises<\/td><\/tr>\n      <\/tbody>\n    <\/table>\n  <\/div>\n\n  <div class=\"alert alert-danger\">\n    <span class=\"alert-icon\">\ud83d\udea8<\/span>\n    <span><strong>R\u00e8gle de prudence :<\/strong> En cas de doute sur la classe du site, classer dans la <strong>cat\u00e9gorie la plus d\u00e9favorable adjacente<\/strong>. Les sols S4 et S5 peuvent amplifier consid\u00e9rablement les acc\u00e9l\u00e9rations sismiques et r\u00e9duire la capacit\u00e9 portante.<\/span>\n  <\/div>\n<\/section>\n\n<!-- \u2463 IMPORTANCE & CONTREVENTEMENT -->\n<section class=\"section\" id=\"sec4\">\n  <div class=\"sec-head\">\n    <div class=\"sec-num\">04<\/div>\n    <div>\n      <h2>B\u00e2timents \u2014 Importance &amp; Syst\u00e8mes de contreventement<\/h2>\n      <small>Chapitre III \u00b7 \u00a7 3.4 \u00e0 3.6<\/small>\n    <\/div>\n  <\/div>\n\n  <div class=\"grid-2\">\n    <div class=\"card\">\n      <h3>\ud83d\udccb Coefficient d&#8217;importance (I)<\/h3>\n      <table class=\"coeff-table\">\n        <thead><tr><th>Groupe<\/th><th>I<\/th><th>Description<\/th><\/tr><\/thead>\n        <tbody>\n          <tr><td><strong>1A<\/strong><\/td><td class=\"rval\">1.40<\/td><td style=\"text-align:left;font-size:12px\">H\u00f4pitaux, s\u00e9curit\u00e9 civile, structures vitales<\/td><\/tr>\n          <tr><td><strong>1B<\/strong><\/td><td class=\"rval\">1.20<\/td><td style=\"text-align:left;font-size:12px\">Grandes \u00e9coles, eau potable, t\u00e9l\u00e9coms<\/td><\/tr>\n          <tr><td><strong>2<\/strong><\/td><td class=\"rval\">1.00<\/td><td style=\"text-align:left;font-size:12px\">B\u00e2timents courants (cat\u00e9gorie par d\u00e9faut)<\/td><\/tr>\n          <tr><td><strong>3<\/strong><\/td><td class=\"rval\">0.80<\/td><td style=\"text-align:left;font-size:12px\">Constructions l\u00e9g\u00e8res, faible occupation<\/td><\/tr>\n        <\/tbody>\n      <\/table>\n    <\/div>\n    <div class=\"card\">\n      <h3>\ud83c\udfdb\ufe0f Coefficient de comportement R \u2014 B\u00e9ton arm\u00e9<\/h3>\n      <table class=\"coeff-table\">\n        <thead><tr><th>Syst\u00e8me<\/th><th>R<\/th><\/tr><\/thead>\n        <tbody>\n          <tr><td style=\"text-align:left;font-size:12px\">1 \u00b7 Ossature seule (&gt; 65% Vbase)<\/td><td class=\"rval\">5.5<\/td><\/tr>\n          <tr><td style=\"text-align:left;font-size:12px\">2 \u00b7 Mixte \u00e9quivalent ossature<\/td><td class=\"rval\">5.5<\/td><\/tr>\n          <tr><td style=\"text-align:left;font-size:12px\">3 \u00b7 Ossature + ma\u00e7onnerie rigide<\/td><td class=\"rval\">3.5<\/td><\/tr>\n          <tr><td style=\"text-align:left;font-size:12px\">4 \u00b7 Mixte \u00e9quivalent voiles<\/td><td class=\"rval\">4.5<\/td><\/tr>\n          <tr><td style=\"text-align:left;font-size:12px\">5 \u00b7 Voiles seuls (&gt; 65% Vbase)<\/td><td class=\"rval\">4.5<\/td><\/tr>\n          <tr><td style=\"text-align:left;font-size:12px\">8 \u00b7 Pendule invers\u00e9<\/td><td class=\"rval\">2.0<\/td><\/tr>\n          <tr><td style=\"text-align:left;font-size:12px\">9 \u00b7 Voiles grandes dim. peu arm\u00e9s<\/td><td class=\"rval\">1.5<\/td><\/tr>\n        <\/tbody>\n      <\/table>\n    <\/div>\n  <\/div>\n\n  <div class=\"alert alert-info\">\n    <span class=\"alert-icon\">\u2139\ufe0f<\/span>\n    <span><strong>Facteur de qualit\u00e9 Q :<\/strong> Le coefficient R est corrig\u00e9 par le facteur de qualit\u00e9 QF qui d\u00e9pend de la r\u00e9gularit\u00e9 et de la redondance de la structure. En pratique Q varie de <strong>1.0<\/strong> (excellente qualit\u00e9) \u00e0 <strong>1.25<\/strong>. Soigner la conception architecturale permet d&#8217;\u00e9viter la majoration.<\/span>\n  <\/div>\n<\/section>\n\n<!-- \u2464 FORCE SISMIQUE MSE -->\n<section class=\"section\" id=\"sec5\">\n  <div class=\"sec-head\">\n    <div class=\"sec-num\">05<\/div>\n    <div>\n      <h2>Calcul de la Force Sismique \u2014 M\u00e9thode Statique \u00c9quivalente<\/h2>\n      <small>Chapitre IV \u00b7 \u00a7 4.2<\/small>\n    <\/div>\n  <\/div>\n\n  <div class=\"alert alert-info\">\n    <span class=\"alert-icon\">\u2139\ufe0f<\/span>\n    <span>La MSE est applicable aux b\u00e2timents r\u00e9guliers en plan et en \u00e9l\u00e9vation, de hauteur limit\u00e9e selon la zone et le syst\u00e8me. Pour les structures irr\u00e9guli\u00e8res ou de grande hauteur, l&#8217;<strong>Analyse Modale Spectrale (\u00a7 4.3)<\/strong> est obligatoire.<\/span>\n  <\/div>\n\n  <div class=\"formula\">\n    <div style=\"font-size:11px;color:rgba(255,255,255,0.4);margin-bottom:10px;letter-spacing:0.1em;text-transform:uppercase\">Force sismique totale \u00e0 la base<\/div>\n    <div class=\"eq\">V = (A \u00b7 D \u00b7 Q \/ R) \u00b7 W<\/div>\n    <div class=\"legend\">\n      A &nbsp;= Coefficient d&#8217;acc\u00e9l\u00e9ration de zone (zone \u00d7 groupe d&#8217;importance I)<br>\n      D &nbsp;= Facteur d&#8217;amplification dynamique moyen (classe de site + p\u00e9riode T)<br>\n      Q &nbsp;= Facteur de qualit\u00e9 de la structure (1.0 \u00e0 1.25)<br>\n      R &nbsp;= Coefficient de comportement global de la structure<br>\n      W = Poids sismique total du b\u00e2timent (G + fraction \u03c8 \u00d7 Q)\n    <\/div>\n  <\/div>\n\n  <div class=\"grid-2\">\n    <div class=\"card\">\n      <h3>\u23f1\ufe0f P\u00e9riode fondamentale T (estimation empirique)<\/h3>\n      <div class=\"formula\" style=\"margin:10px 0;padding:12px 16px;font-size:12px\">\n        T = C\u0442 \u00d7 h\u2099^(3\/4)<br><br>\n        <span style=\"color:rgba(255,255,255,0.45)\">\n          C\u0442 = 0.075 \u00b7 Portique BA (sans remplissage)<br>\n          C\u0442 = 0.050 \u00b7 Portique BA (avec ma\u00e7onnerie)<br>\n          C\u0442 = 0.050 \u00b7 Ossature m\u00e9tallique<br>\n          C\u0442 = 0.035 \u00b7 Voiles BA ou ma\u00e7onnerie chain\u00e9e<br>\n          h\u2099 = Hauteur totale du b\u00e2timent (m)\n        <\/span>\n      <\/div>\n    <\/div>\n    <div class=\"card\">\n      <h3>\ud83d\udcca Distribution des forces par niveau<\/h3>\n      <div class=\"formula\" style=\"margin:10px 0;padding:12px 16px;font-size:12px\">\n        Si T &gt; 0.7s : F\u2099 = 0.07 \u00d7 T \u00d7 V<br>\n        V\u209c = V \u2212 F\u2099<br><br>\n        F\u1d62 = V\u209c \u00d7 (W\u1d62 \u00d7 h\u1d62) \/ \u03a3(W\u2c7c \u00d7 h\u2c7c)<br><br>\n        <span style=\"color:rgba(255,255,255,0.45)\">\n          h\u1d62 = hauteur du niveau i (depuis la base)<br>\n          W\u1d62 = poids sismique du niveau i\n        <\/span>\n      <\/div>\n    <\/div>\n  <\/div>\n\n  <div class=\"alert alert-warn\">\n    <span class=\"alert-icon\">\u26a0\ufe0f<\/span>\n    <span><strong>V\u00e9rification obligatoire \u2014 D\u00e9placements inter-\u00e9tages (\u00a7 5.10) :<\/strong><br>\n    \u0394r \/ h \u2264 <strong>1.0%<\/strong> pour structures avec remplissage en ma\u00e7onnerie fragile<br>\n    \u0394r \/ h \u2264 <strong>1.5%<\/strong> pour les autres types de structures<\/span>\n  <\/div>\n<\/section>\n\n<!-- \u2465 B\u00c9TON ARM\u00c9 -->\n<section class=\"section\" id=\"sec6\">\n  <div class=\"sec-head\">\n    <div class=\"sec-num\">06<\/div>\n    <div>\n      <h2>Dispositions constructives \u2014 B\u00e9ton Arm\u00e9<\/h2>\n      <small>Chapitre VII \u00b7 \u00a7 7.4 \u00e0 7.9<\/small>\n    <\/div>\n  <\/div>\n\n  <div class=\"grid-2\">\n    <div>\n      <div class=\"card\">\n        <h3>\ud83c\udfdb\ufe0f Poteaux \u2014 Dimensions minimales<\/h3>\n        <table class=\"site-table\" style=\"font-size:13px\">\n          <thead><tr><th>Zone sismique<\/th><th>Dim. min.<\/th><\/tr><\/thead>\n          <tbody>\n            <tr><td>I, II, III<\/td><td>25 \u00d7 25 cm<\/td><\/tr>\n            <tr><td>IV, V, VI<\/td><td>30 \u00d7 30 cm<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n        <p style=\"margin-top:12px;font-size:13px\"><strong>Effort normal r\u00e9duit \u03bd \u2264 0.35<\/strong> sous combinaison sismique :<\/p>\n        <div class=\"formula\" style=\"padding:10px 14px;margin:8px 0;font-size:12px\">\n          \u03bd = Nu \/ (Bc \u00d7 fc28) \u2264 0.35\n        <\/div>\n        <p style=\"font-size:13px;color:var(--text-secondary)\">\u00c9lan. g\u00e9om. Ag \u2264 5 (zones IV-VI). Crochets \u00e0 <strong>135\u00b0<\/strong> obligatoires, longueur \u2265 10\u03d5\u2097.<\/p>\n      <\/div>\n      <div class=\"card\">\n        <h3>\ud83d\udd29 Cadres &amp; \u00e9triers poteaux (zone nodale)<\/h3>\n        <div class=\"formula\" style=\"padding:10px 14px;margin:8px 0;font-size:12px\">\n          At\/(b\u00b7t) \u2265 Vu \/ (0.8 \u00b7 h \u00b7 fe)<br><br>\n          <span style=\"color:rgba(255,255,255,0.45)\">\n          Zones I,II,III : t \u2264 min(10\u03d5\u2097 ; 12.5 cm)<br>\n          Zones IV,V,VI : t \u2264 min(b\u2080\/3 ; 10 cm ; 6\u03d5\u2097)<br>\n          Zone courante : t&#8217; \u2264 15\u03d5\u2097 (I-III) | min(b\/2;h\/2;10\u03d5\u2097) (IV-VI)\n          <\/span>\n        <\/div>\n      <\/div>\n    <\/div>\n    <div>\n      <div class=\"card\">\n        <h3>\ud83d\udcd0 Poutres \u2014 Dimensions minimales<\/h3>\n        <table class=\"site-table\" style=\"font-size:13px\">\n          <thead><tr><th>Param\u00e8tre<\/th><th>Zone I-III<\/th><th>Zone IV-VI<\/th><\/tr><\/thead>\n          <tbody>\n            <tr><td>Largeur b min.<\/td><td>20 cm<\/td><td>25 cm<\/td><\/tr>\n            <tr><td>Hauteur h min.<\/td><td colspan=\"2\">30 cm (20 cm si voiles)<\/td><\/tr>\n            <tr><td>\u00c9lancement h\/b<\/td><td colspan=\"2\">\u2264 4.0<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n      <div class=\"card\">\n        <h3>\ud83d\udd29 Ferraillage poutres (zone critique = 1.5h)<\/h3>\n        <ul style=\"font-size:13px;color:var(--text-secondary);padding-left:16px;margin:8px 0\">\n          <li>Taux long. min <strong>0.5%<\/strong> \u2014 max <strong>4%<\/strong> (courante) \/ <strong>6%<\/strong> (recouvrement)<\/li>\n          <li style=\"margin-top:5px\">\u2265 2 barres HA \u03d512 min. en face sup. et inf. sur toute la longueur<\/li>\n          <li style=\"margin-top:5px\">Recouvrement : <strong>50\u03d5\u2097<\/strong> (zones I-III) \/ <strong>60\u03d5\u2097<\/strong> (zones IV-VI)<\/li>\n        <\/ul>\n        <div class=\"formula\" style=\"padding:10px 14px;margin:8px 0;font-size:12px\">\n          s \u2264 min(h\/4 ; 24\u03d5\u209c ; 17.5 cm ; 6\u03d5\u2097)  \u2190 zone critique\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/div>\n\n  <!-- N\u0152UDS + VOILES -->\n  <div class=\"card\">\n    <h3>\ud83d\udd17 N\u0153uds poteaux-poutres \u2014 Condition capacitaire (\u00a7 7.6.2)<\/h3>\n    <div class=\"formula\" style=\"font-size:13px;padding:14px 18px\">\n      \u03a3MRc \u2265 Q \u00b7 \u03a3MRb<br><br>\n      <span class=\"legend\">\n        Q = 1.1 \u00b7 Zones sismiques I, II et III<br>\n        Q = 1.3 \u00b7 Zones sismiques IV, V et VI<br>\n        MRc = \u03a3 moments r\u00e9sistants des poteaux au n\u0153ud<br>\n        MRb = \u03a3 moments r\u00e9sistants des poutres au n\u0153ud<br>\n        \u2192 Esp. max entre cadres dans le n\u0153ud : 10 cm | min. 3 cadres par n\u0153ud\n      <\/span>\n    <\/div>\n  <\/div>\n\n  <div class=\"card\">\n    <h3>\ud83e\uddf1 Voiles de contreventement (\u00a7 7.7)<\/h3>\n    <div class=\"grid-2\" style=\"margin-top:12px;gap:14px\">\n      <div>\n        <p style=\"font-size:13px;font-weight:700;color:var(--text-primary);margin-bottom:6px\">Coffrage<\/p>\n        <ul style=\"font-size:13px;color:var(--text-secondary);padding-left:16px\">\n          <li>\u00c9paisseur min. : 15 cm (zones I-III) \/ 20 cm (zones IV-VI)<\/li>\n          <li style=\"margin-top:4px\">Longueur min. : 4 \u00d7 \u00e9paisseur<\/li>\n          <li style=\"margin-top:4px\">2 nappes d&#8217;armatures d\u00e8s e \u2265 20 cm<\/li>\n        <\/ul>\n      <\/div>\n      <div>\n        <p style=\"font-size:13px;font-weight:700;color:var(--text-primary);margin-bottom:6px\">Taux d&#8217;armatures<\/p>\n        <ul style=\"font-size:13px;color:var(--text-secondary);padding-left:16px\">\n          <li>Vert. et horiz. min : <strong>0.15%<\/strong> (zones I-III)<\/li>\n          <li style=\"margin-top:4px\">Vert. et horiz. min : <strong>0.20%<\/strong> (zones IV-VI)<\/li>\n          <li style=\"margin-top:4px\">Zones critiques : renforcement aux extr\u00e9mit\u00e9s<\/li>\n        <\/ul>\n      <\/div>\n    <\/div>\n  <\/div>\n<\/section>\n\n<!-- \u2466 FONDATIONS -->\n<section class=\"section\" id=\"sec7\">\n  <div class=\"sec-head\">\n    <div class=\"sec-num\">07<\/div>\n    <div>\n      <h2>Fondations &amp; Sols<\/h2>\n      <small>Chapitre X \u00b7 \u00a7 10.1 \u00e0 10.4<\/small>\n    <\/div>\n  <\/div>\n\n  <div class=\"grid-3\">\n    <div class=\"card\">\n      <h3>\ud83d\udd17 Solidarisation des appuis<\/h3>\n      <p>Tous les points d&#8217;appui doivent \u00eatre solidaris\u00e9s par des <strong>longrines de rigidit\u00e9<\/strong> ou un dallage rigide dans les deux directions, d\u00e8s la zone II.<\/p>\n    <\/div>\n    <div class=\"card\">\n      <h3>\ud83e\uddf1 Voile p\u00e9riph\u00e9rique<\/h3>\n      <p>Un voile p\u00e9riph\u00e9rique en BA en sous-sol est obligatoire en zones <strong>IV, V et VI<\/strong>. Il am\u00e9liore le comportement d&#8217;ensemble des fondations sous action sismique.<\/p>\n    <\/div>\n    <div class=\"card\">\n      <h3>\u26a1 Risque de liqu\u00e9faction<\/h3>\n      <p>V\u00e9rification obligatoire pour les sites S3 et S4 en zones III \u00e0 VI. Si risque confirm\u00e9 : renforcement du sol requis (colonnes ballast\u00e9es, injections, etc.).<\/p>\n    <\/div>\n  <\/div>\n\n  <div class=\"alert alert-green\">\n    <span class=\"alert-icon\">\u2705<\/span>\n    <span><strong>Capacit\u00e9 portante (\u00a7 5.7) :<\/strong> Sous combinaison sismique, la capacit\u00e9 portante nette des fondations doit \u00eatre v\u00e9rifi\u00e9e. Une majoration de <strong>30%<\/strong> est admise sur la contrainte admissible du sol sous charge sismique.<\/span>\n  <\/div>\n<\/section>\n\n<!-- \u2467 RECOMMANDATIONS -->\n<section class=\"section\" id=\"sec8\">\n  <div class=\"sec-head\">\n    <div class=\"sec-num\">08<\/div>\n    <div>\n      <h2>Recommandations Pratiques<\/h2>\n      <small>Retours d&#8217;exp\u00e9rience terrain &amp; bonnes pratiques BET<\/small>\n    <\/div>\n  <\/div>\n\n  <div class=\"reco-grid\">\n    <div class=\"reco-card g\">\n      <h4>\ud83d\uddfa\ufe0f Avant de commencer l&#8217;\u00e9tude<\/h4>\n      <ul>\n        <li>V\u00e9rifier la zone sismique exacte dans l&#8217;Annexe A (niveau commune)<\/li>\n        <li>Exiger une \u00e9tude g\u00e9otechnique \u2192 classer le site S1 \u00e0 S5<\/li>\n        <li>D\u00e9finir le groupe d&#8217;importance du b\u00e2timent (1A, 1B, 2, 3)<\/li>\n        <li>Identifier le syst\u00e8me de contreventement \u2192 d\u00e9duire R<\/li>\n      <\/ul>\n    <\/div>\n    <div class=\"reco-card i\">\n      <h4>\ud83d\udcbb Int\u00e9gration dans les logiciels<\/h4>\n      <ul>\n        <li>G\u00e9n\u00e9rer le spectre RPA 2024 et l&#8217;importer en CSV dans ETABS\/SAP2000<\/li>\n        <li>Utiliser un plug-in d\u00e9di\u00e9 (ex. RPA24 Integrator pour Robot)<\/li>\n        <li>V\u00e9rifier la concordance des unit\u00e9s (kN, m) lors de l&#8217;import<\/li>\n        <li>Contr\u00f4ler Vdyn \u2265 0.8 \u00d7 Vstatique (crit\u00e8re obligatoire)<\/li>\n      <\/ul>\n    <\/div>\n    <div class=\"reco-card w\">\n      <h4>\ud83c\udfd7\ufe0f Conception parasismique<\/h4>\n      <ul>\n        <li>Privil\u00e9gier les syst\u00e8mes \u00e0 voiles (R = 4.5) pour zones IV \u00e0 VI<\/li>\n        <li>\u00c9viter les irr\u00e9gularit\u00e9s en plan et en \u00e9l\u00e9vation (facteur Q)<\/li>\n        <li>Pr\u00e9voir des joints sismiques entre b\u00e2timents contigus<\/li>\n        <li>D\u00e9solidariser les cloisons ma\u00e7onnerie des ossatures flexibles<\/li>\n      <\/ul>\n    <\/div>\n    <div class=\"reco-card d\">\n      <h4>\ud83d\udea8 Erreurs fr\u00e9quentes \u00e0 \u00e9viter<\/h4>\n      <ul>\n        <li>Ne pas utiliser la carte de zonage RPA 99 \u2014 elle a chang\u00e9<\/li>\n        <li>Crochets \u00e0 135\u00b0 obligatoires (non 90\u00b0) sur cadres et \u00e9triers<\/li>\n        <li>V\u00e9rifier \u03bd \u2264 0.35 pour chaque poteau sous combinaison sismique<\/li>\n        <li>Poteaux courts (Ag &lt; 5) : confinement renforc\u00e9 obligatoire<\/li>\n      <\/ul>\n    <\/div>\n  <\/div>\n\n  <!-- PROC\u00c9DURE PAS \u00c0 PAS -->\n  <div class=\"card\" style=\"margin-top:24px\">\n    <h3 style=\"margin-bottom:20px\">\ud83d\udccb Proc\u00e9dure d&#8217;\u00e9tude parasismique \u2014 7 \u00e9tapes cl\u00e9s<\/h3>\n    <ol class=\"steps\">\n      <li>\n        <strong>Localisation &amp; Zonage sismique<\/strong>\n        <p>Identifier la commune dans l&#8217;Annexe A \u2192 zone sismique (0 \u00e0 VI) \u2192 coefficient d&#8217;acc\u00e9l\u00e9ration A. V\u00e9rifier si la commune est partag\u00e9e entre plusieurs zones.<\/p>\n      <\/li>\n      <li>\n        <strong>\u00c9tude g\u00e9otechnique &amp; Classification du site<\/strong>\n        <p>Obtenir le rapport de sol (Vs30 pr\u00e9f\u00e9rable, ou SPT\/CPT) \u2192 classer S1 \u00e0 S5 \u2192 d\u00e9duire le facteur d&#8217;amplification de site S et les p\u00e9riodes TA, TB.<\/p>\n      <\/li>\n      <li>\n        <strong>D\u00e9finir les param\u00e8tres sismiques<\/strong>\n        <p>Groupe d&#8217;importance \u2192 I. Syst\u00e8me de contreventement \u2192 R. Facteur de qualit\u00e9 \u2192 Q. Poids sismique total \u2192 W. Hauteur \u2192 T.<\/p>\n      <\/li>\n      <li>\n        <strong>Choisir la m\u00e9thode de calcul<\/strong>\n        <p>MSE si b\u00e2timent r\u00e9gulier et conditions \u00a7 4.1.2 satisfaites. Sinon : Analyse Modale Spectrale (\u00a7 4.3) obligatoire \u2014 g\u00e9n\u00e9rer et importer le spectre RPA 2024.<\/p>\n      <\/li>\n      <li>\n        <strong>Calcul &amp; v\u00e9rifications de s\u00e9curit\u00e9<\/strong>\n        <p>Calculer V, distribuer par niveau, dimensionner poteaux\/poutres\/voiles. V\u00e9rifier d\u00e9placements inter-\u00e9tages, effets P-\u0394, stabilit\u00e9 au renversement (\u00a7 5.9).<\/p>\n      <\/li>\n      <li>\n        <strong>Dispositions constructives<\/strong>\n        <p>Appliquer le Chapitre VII (BA) ou VIII (Acier) : confinement, crochets 135\u00b0, espacements, taux d&#8217;armatures, longueurs d&#8217;ancrage selon la zone sismique.<\/p>\n      <\/li>\n      <li>\n        <strong>Fondations &amp; dossier CTC<\/strong>\n        <p>V\u00e9rifier la capacit\u00e9 portante sous combinaison sismique (+30% admis). V\u00e9rifier le risque de liqu\u00e9faction si S3\/S4. R\u00e9diger la note de calcul conforme RPA 2024 pour visa CTC.<\/p>\n      <\/li>\n    <\/ol>\n  <\/div>\n\n  <div class=\"alert alert-green\" style=\"margin-top:20px\">\n    <span class=\"alert-icon\">\ud83d\udca1<\/span>\n    <span><strong>CTC &amp; Permis de construire :<\/strong> Le r\u00f4le du CTC est \u00e9largi en 2024 \u00e0 toutes constructions y compris individuelles. La note de calcul doit mentionner explicitement : zone sismique, classe de site, groupe d&#8217;importance, syst\u00e8me de contreventement et m\u00e9thode d&#8217;analyse. Le visa CTC conforme au RPA 2024 est obligatoire pour l&#8217;obtention du permis de construire.<\/span>\n  <\/div>\n<\/section>\n\n<\/div><!-- \/container -->\n\n<div class=\"footer\">\n  <strong>Guide Pratique RPA 2024 \u2014 DTR BC 2.48<\/strong><br>\n  R\u00e9dig\u00e9 par <strong>BuilDzair.com<\/strong><br>\n  Document \u00e0 titre indicatif. Se r\u00e9f\u00e9rer au texte officiel approuv\u00e9 par arr\u00eat\u00e9 du 24 juin 2024.<br>\n  Centre National de Recherche Appliqu\u00e9e en G\u00e9nie Parasismique (CGS) \u00b7 Minist\u00e8re de l&#8217;Habitat, de l&#8217;Urbanisme et de la Ville.\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>","protected":false},"excerpt":{"rendered":"<p>Guide Pratique RPA 2024 \u2014 DTR BC 2.48 DTR BC 2.48 \u00b7 Approuv\u00e9 24 Juin 2024 Guide Pratiqued&#8217;Application du RPA 2024 R\u00e8gles Parasismiques Alg\u00e9riennes \u2014 Synth\u00e8se op\u00e9rationnelle \u00e0 l&#8217;usage des ing\u00e9nieurs et bureaux d&#8217;\u00e9tudes techniques. BuilDzair.com CGS \u00b7 Minist\u00e8re Habitat \u2460 G\u00e9n\u00e9ralit\u00e9s \u2461 Zonage sismique \u2462 Classification des sites \u2463 B\u00e2timents&#8230;<\/p>","protected":false},"author":60,"featured_media":18081,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[252,355,261],"tags":[],"class_list":["post-18085","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dtr-et-normes","category-rpa2024","category-261"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>RPA 2024 en pratique \u2014 Tout ce que l&#039;ing\u00e9nieur doit savoir - BuilDzair<\/title>\n<meta name=\"description\" content=\"Besoin d&#039;un ing\u00e9nieur ma\u00eetrisant le RPA 2024 ? 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