{"id":1766,"date":"2025-05-10T19:24:03","date_gmt":"2025-05-10T17:24:03","guid":{"rendered":"https:\/\/alvid-consulting.com\/?p=1766"},"modified":"2026-03-26T15:59:29","modified_gmt":"2026-03-26T14:59:29","slug":"comprehensive-guide-to-constraints-in-primavera-p6-types-examples-and-best-practices","status":"publish","type":"post","link":"https:\/\/alvid-consulting.com\/ar\/planning-scheduling\/comprehensive-guide-to-constraints-in-primavera-p6-types-examples-and-best-practices\/","title":{"rendered":"\u0627\u0644\u062f\u0644\u064a\u0644 \u0627\u0644\u0643\u0627\u0645\u0644 \u0644\u0644\u0642\u064a\u0648\u062f \u0641\u064a Primavera P6: \u0627\u0644\u0623\u0646\u0648\u0627\u0639\u060c \u0627\u0644\u0623\u0645\u062b\u0644\u0629\u060c \u0648\u0623\u0641\u0636\u0644 \u0627\u0644\u0645\u0645\u0627\u0631\u0633\u0627\u062a"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"1766\" class=\"elementor elementor-1766\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e43b21f e-flex e-con-boxed e-con e-parent\" data-id=\"e43b21f\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0e20905 elementor-widget__width-initial elementor-widget elementor-widget-heading\" data-id=\"0e20905\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Guide complet des contraintes dans Primavera P6 : types, exemples et bonnes pratiques<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-437340c e-flex e-con-boxed e-con e-parent\" data-id=\"437340c\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-8d7d11c e-con-full e-flex e-con e-child\" data-id=\"8d7d11c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-084bbb8 elementor-widget__width-initial elementor-widget elementor-widget-heading\" data-id=\"084bbb8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Introduction :<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2de3675 elementor-widget elementor-widget-text-editor\" data-id=\"2de3675\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"flex flex-col text-sm pb-25\"><section class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [&amp;:has([data-writing-block])&gt;*]:pointer-events-auto scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:25c7f35b-6a6c-48a4-bb67-e706f3d26b11-10\" data-testid=\"conversation-turn-22\" data-scroll-anchor=\"true\" data-turn=\"assistant\"><div class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"><div class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"><div class=\"flex max-w-full flex-col gap-4 grow\"><div class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+&amp;]:mt-1\" dir=\"auto\" tabindex=\"0\" data-message-author-role=\"assistant\" data-message-id=\"31772c05-43c1-466d-b752-0ab6096f8586\" data-message-model-slug=\"gpt-5-3\" data-turn-start-message=\"true\"><div class=\"flex w-full flex-col gap-1 empty:hidden\"><div class=\"markdown prose dark:prose-invert w-full wrap-break-word dark markdown-new-styling\"><p data-start=\"0\" data-end=\"433\">Dans le management de projet, l\u2019ordonnancement est un processus complexe qui n\u00e9cessite de trouver un \u00e9quilibre entre une <strong data-start=\"121\" data-end=\"145\">logique r\u00e9seau (CPM)<\/strong> et des <strong data-start=\"153\" data-end=\"186\">contraintes r\u00e9elles du projet<\/strong>. Dans <strong data-start=\"193\" data-end=\"216\">Oracle Primavera P6<\/strong>, les contraintes sont utilis\u00e9es pour imposer des r\u00e8gles sp\u00e9cifiques sur les dates de d\u00e9but et de fin des activit\u00e9s, afin d\u2019aligner le planning avec les <strong data-start=\"369\" data-end=\"432\">exigences contractuelles, r\u00e9glementaires et op\u00e9rationnelles<\/strong>.<\/p><p data-start=\"435\" data-end=\"549\">Ce guide propose une <strong data-start=\"456\" data-end=\"503\">analyse d\u00e9taill\u00e9e et \u00e0 forte valeur ajout\u00e9e<\/strong> des contraintes dans Primavera P6, incluant :<\/p><ul data-start=\"551\" data-end=\"867\"><li data-section-id=\"1xz7yv6\" data-start=\"551\" data-end=\"594\">Les diff\u00e9rents <strong data-start=\"568\" data-end=\"592\">types de contraintes<\/strong><\/li><li data-section-id=\"150375t\" data-start=\"595\" data-end=\"640\">Leur <strong data-start=\"602\" data-end=\"638\">impact sur le calcul du planning<\/strong><\/li><li data-section-id=\"ybbs0t\" data-start=\"641\" data-end=\"735\">Les diff\u00e9rences cl\u00e9s entre <strong data-start=\"670\" data-end=\"699\">contraintes fortes (hard)<\/strong> et <strong data-start=\"703\" data-end=\"733\">contraintes souples (soft)<\/strong><\/li><li data-section-id=\"1r2h2kp\" data-start=\"736\" data-end=\"867\">Les <strong data-start=\"742\" data-end=\"762\">bonnes pratiques<\/strong> pour garantir que les contraintes renforcent \u2014 et non d\u00e9t\u00e9riorent \u2014 la qualit\u00e9 d\u2019un planning structur\u00e9<\/li><\/ul><p data-start=\"869\" data-end=\"990\" data-is-last-node=\"\" data-is-only-node=\"\">\u00a0<\/p><p data-start=\"869\" data-end=\"990\" data-is-last-node=\"\" data-is-only-node=\"\">\ud83d\udc49 Objectif : passer d\u2019un planning \u201cforc\u00e9\u201d \u00e0 un planning <strong data-start=\"926\" data-end=\"989\">robuste, d\u00e9fendable et exploitable en Delay &amp; Risk Strategy<\/strong>.<\/p><\/div><\/div><\/div><\/div><div class=\"z-0 flex min-h-[46px] justify-start\">\u00a0<\/div><div class=\"mt-3 w-full empty:hidden\"><div class=\"text-center\">\u00a0<\/div><\/div><\/div><\/div><\/section><\/div><div class=\"pointer-events-none h-px w-px absolute bottom-0\" aria-hidden=\"true\" data-edge=\"true\">\u00a0<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-03ee604 elementor-widget elementor-widget-image\" data-id=\"03ee604\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"293\" height=\"165\" src=\"https:\/\/alvid-consulting.com\/wp-content\/uploads\/2025\/05\/Constraint.jpg\" class=\"attachment-full size-full wp-image-1767\" alt=\"\" srcset=\"https:\/\/alvid-consulting.com\/wp-content\/uploads\/2025\/05\/Constraint.jpg 293w, https:\/\/alvid-consulting.com\/wp-content\/uploads\/2025\/05\/Constraint-18x10.jpg 18w\" sizes=\"(max-width: 293px) 100vw, 293px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a80efb0 e-con-full e-flex e-con e-child\" data-id=\"a80efb0\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a768f21 elementor-widget elementor-widget-text-editor\" data-id=\"a768f21\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"flex flex-col text-sm pb-25\"><section class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [&amp;:has([data-writing-block])&gt;*]:pointer-events-auto scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:25c7f35b-6a6c-48a4-bb67-e706f3d26b11-11\" data-testid=\"conversation-turn-24\" data-scroll-anchor=\"true\" data-turn=\"assistant\"><div class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"><div class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"><div class=\"flex max-w-full flex-col gap-4 grow\"><div class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+&amp;]:mt-1\" dir=\"auto\" tabindex=\"0\" data-message-author-role=\"assistant\" data-message-id=\"f4c3d369-c6bb-4f02-a796-3971ee560806\" data-message-model-slug=\"gpt-5-3\" data-turn-start-message=\"true\"><div class=\"flex w-full flex-col gap-1 empty:hidden\"><div class=\"markdown prose dark:prose-invert w-full wrap-break-word dark markdown-new-styling\"><h2 data-section-id=\"kfdu0u\" data-start=\"0\" data-end=\"51\"><span role=\"text\"><strong data-start=\"3\" data-end=\"51\">Que sont les contraintes dans Primavera P6 ?<\/strong><\/span><\/h2><p data-start=\"53\" data-end=\"273\">Les contraintes dans <strong data-start=\"74\" data-end=\"90\">Primavera P6<\/strong> sont des <strong data-start=\"100\" data-end=\"137\">restrictions bas\u00e9es sur des dates<\/strong>, appliqu\u00e9es aux activit\u00e9s pour <strong data-start=\"169\" data-end=\"210\">orienter ou forcer leur planification<\/strong>, en compl\u00e9ment (ou parfois au d\u00e9triment) de la logique r\u00e9seau.<\/p><p data-start=\"275\" data-end=\"443\">Au lieu de se reposer uniquement sur les relations entre activit\u00e9s (FS, SS, etc.), les contraintes permettent de <strong data-start=\"388\" data-end=\"442\">contr\u00f4ler directement les dates de d\u00e9but ou de fin<\/strong>.<\/p><h3 data-section-id=\"do3tir\" data-start=\"445\" data-end=\"475\"><span role=\"text\"><strong data-start=\"449\" data-end=\"475\">Cas d\u2019usage typiques :<\/strong><\/span><\/h3><ul data-start=\"476\" data-end=\"677\"><li data-section-id=\"9gu3j0\" data-start=\"476\" data-end=\"539\">Exigences r\u00e9glementaires (dates impos\u00e9es par les autorit\u00e9s)<\/li><li data-section-id=\"g01egp\" data-start=\"540\" data-end=\"590\">Obligations contractuelles (jalons, paiements)<\/li><li data-section-id=\"1iv98g5\" data-start=\"591\" data-end=\"623\">Disponibilit\u00e9 des ressources<\/li><li data-section-id=\"zafqsj\" data-start=\"624\" data-end=\"677\">D\u00e9pendances externes (approbations, fournisseurs)<\/li><\/ul><p data-start=\"679\" data-end=\"737\">\u00a0<\/p><p data-start=\"679\" data-end=\"737\">\u26a0\ufe0f <strong data-start=\"682\" data-end=\"697\">Attention :<\/strong> une mauvaise utilisation peut g\u00e9n\u00e9rer :<\/p><ul data-start=\"738\" data-end=\"819\"><li data-section-id=\"kb273e\" data-start=\"738\" data-end=\"763\">du <strong data-start=\"743\" data-end=\"761\">negative float<\/strong><\/li><li data-section-id=\"12ivp2g\" data-start=\"764\" data-end=\"790\">un planning irr\u00e9aliste<\/li><li data-section-id=\"1x8igss\" data-start=\"791\" data-end=\"819\">une perte de flexibilit\u00e9<\/li><\/ul><h2 data-section-id=\"waa1ee\" data-start=\"826\" data-end=\"871\">\u00a0<\/h2><h2 data-section-id=\"waa1ee\" data-start=\"826\" data-end=\"871\"><span role=\"text\"><strong data-start=\"829\" data-end=\"871\">Types de contraintes dans Primavera P6<\/strong><\/span><\/h2><p data-start=\"873\" data-end=\"1004\">Les contraintes sont class\u00e9es en deux cat\u00e9gories principales :<br data-start=\"935\" data-end=\"938\" \/>\ud83d\udc49 <strong data-start=\"941\" data-end=\"970\">Contraintes fortes (Hard)<\/strong> vs <strong data-start=\"974\" data-end=\"1004\">Contraintes souples (Soft)<\/strong><\/p><h2 data-section-id=\"dliop7\" data-start=\"1011\" data-end=\"1058\">\u00a0<\/h2><h2 data-section-id=\"dliop7\" data-start=\"1011\" data-end=\"1058\"><span role=\"text\"><strong data-start=\"1014\" data-end=\"1058\">1. Contraintes fortes (Hard Constraints)<\/strong><\/span><\/h2><p data-start=\"1060\" data-end=\"1150\">Les contraintes fortes imposent des dates fixes et <strong data-start=\"1111\" data-end=\"1149\">ignorent souvent la logique r\u00e9seau<\/strong>.<\/p><p data-start=\"1152\" data-end=\"1182\">\u26a0\ufe0f \u00c0 utiliser avec pr\u00e9caution.<\/p><h3 data-section-id=\"iuw7kv\" data-start=\"1189\" data-end=\"1227\">\u00a0<\/h3><h3 data-section-id=\"iuw7kv\" data-start=\"1189\" data-end=\"1227\"><span role=\"text\">\ud83d\udd34 <strong data-start=\"1196\" data-end=\"1225\">a. Start On (D\u00e9marrer le)<\/strong><\/span><\/h3><ul data-start=\"1228\" data-end=\"1298\"><li data-section-id=\"t1f0kj\" data-start=\"1228\" data-end=\"1269\">Force le d\u00e9marrage \u00e0 une date pr\u00e9cise<\/li><li data-section-id=\"18vd3ej\" data-start=\"1270\" data-end=\"1298\">Ignore les pr\u00e9d\u00e9cesseurs<\/li><\/ul><p data-start=\"1300\" data-end=\"1367\">\u00a0<\/p><p data-start=\"1300\" data-end=\"1367\"><em data-start=\"1303\" data-end=\"1314\">Exemple :<\/em><br data-start=\"1314\" data-end=\"1317\" \/>Autorisation d\u2019excavation \u00e0 partir du 15\/06\/2025<\/p><h3 data-section-id=\"fadigz\" data-start=\"1374\" data-end=\"1410\">\u00a0<\/h3><h3 data-section-id=\"fadigz\" data-start=\"1374\" data-end=\"1410\"><span role=\"text\">\ud83d\udd34 <strong data-start=\"1381\" data-end=\"1408\">b. Finish On (Finir le)<\/strong><\/span><\/h3><ul data-start=\"1411\" data-end=\"1478\"><li data-section-id=\"5er584\" data-start=\"1411\" data-end=\"1445\">Force la fin \u00e0 une date donn\u00e9e<\/li><li data-section-id=\"17y3q5t\" data-start=\"1446\" data-end=\"1478\">Peut cr\u00e9er du negative float<\/li><\/ul><p data-start=\"1480\" data-end=\"1541\">\u00a0<\/p><p data-start=\"1480\" data-end=\"1541\"><em data-start=\"1483\" data-end=\"1494\">Exemple :<\/em><br data-start=\"1494\" data-end=\"1497\" \/>Structure termin\u00e9e au 30\/08\/2025 (contrat)<\/p><h3 data-section-id=\"7amh8x\" data-start=\"1548\" data-end=\"1599\">\u00a0<\/h3><h3 data-section-id=\"7amh8x\" data-start=\"1548\" data-end=\"1599\"><span role=\"text\">\ud83d\udd34 <strong data-start=\"1555\" data-end=\"1597\">c. Mandatory Start (D\u00e9but obligatoire)<\/strong><\/span><\/h3><ul data-start=\"1600\" data-end=\"1653\"><li data-section-id=\"l1bei4\" data-start=\"1600\" data-end=\"1653\">D\u00e9marrage impos\u00e9, sans tenir compte de la logique<\/li><\/ul><p data-start=\"1655\" data-end=\"1706\">\u00a0<\/p><p data-start=\"1655\" data-end=\"1706\"><em data-start=\"1658\" data-end=\"1669\">Exemple :<\/em><br data-start=\"1669\" data-end=\"1672\" \/>Commissioning fix\u00e9 au 05\/01\/2026<\/p><h3 data-section-id=\"1cwv5ii\" data-start=\"1713\" data-end=\"1763\">\u00a0<\/h3><h3 data-section-id=\"1cwv5ii\" data-start=\"1713\" data-end=\"1763\"><span role=\"text\">\ud83d\udd34 <strong data-start=\"1720\" data-end=\"1761\">d. Mandatory Finish (Fin obligatoire)<\/strong><\/span><\/h3><ul data-start=\"1764\" data-end=\"1819\"><li data-section-id=\"nh46t7\" data-start=\"1764\" data-end=\"1819\">Fin impos\u00e9e, m\u00eame si la logique indique autre chose<\/li><\/ul><p data-start=\"1821\" data-end=\"1871\">\u00a0<\/p><p data-start=\"1821\" data-end=\"1871\"><em data-start=\"1824\" data-end=\"1835\">Exemple :<\/em><br data-start=\"1835\" data-end=\"1838\" \/>Livraison impos\u00e9e au 31\/12\/2026<\/p><h2 data-section-id=\"6x6k1v\" data-start=\"1878\" data-end=\"1926\">\u00a0<\/h2><h2 data-section-id=\"6x6k1v\" data-start=\"1878\" data-end=\"1926\"><span role=\"text\"><strong data-start=\"1881\" data-end=\"1926\">2. Contraintes souples (Soft Constraints)<\/strong><\/span><\/h2><p data-start=\"1928\" data-end=\"2003\">Les contraintes souples <strong data-start=\"1952\" data-end=\"2002\">guident le planning sans casser la logique CPM<\/strong>.<\/p><p data-start=\"2005\" data-end=\"2036\">\ud83d\udc49 <strong data-start=\"2008\" data-end=\"2036\">Recommand\u00e9es en pratique<\/strong><\/p><h3 data-section-id=\"1rm4okd\" data-start=\"2043\" data-end=\"2083\">\u00a0<\/h3><h3 data-section-id=\"1rm4okd\" data-start=\"2043\" data-end=\"2083\"><span role=\"text\">\ud83d\udfe2 <strong data-start=\"2050\" data-end=\"2081\">a. Start On or After (SOOA)<\/strong><\/span><\/h3><ul data-start=\"2084\" data-end=\"2124\"><li data-section-id=\"hbntog\" data-start=\"2084\" data-end=\"2124\">Ne peut pas commencer avant une date<\/li><\/ul><p data-start=\"2126\" data-end=\"2187\">\u00a0<\/p><p data-start=\"2126\" data-end=\"2187\"><em data-start=\"2129\" data-end=\"2140\">Exemple :<\/em><br data-start=\"2140\" data-end=\"2143\" \/>Montage acier apr\u00e8s livraison (10\/05\/2025)<\/p><h3 data-section-id=\"8mkmr4\" data-start=\"2194\" data-end=\"2228\">\u00a0<\/h3><h3 data-section-id=\"8mkmr4\" data-start=\"2194\" data-end=\"2228\"><span role=\"text\">\ud83d\udfe2 <strong data-start=\"2201\" data-end=\"2226\">b. Start On or Before<\/strong><\/span><\/h3><ul data-start=\"2229\" data-end=\"2268\"><li data-section-id=\"1dbr266\" data-start=\"2229\" data-end=\"2268\">Doit d\u00e9marrer avant une date limite<\/li><\/ul><p data-start=\"2270\" data-end=\"2322\">\u00a0<\/p><p data-start=\"2270\" data-end=\"2322\"><em data-start=\"2273\" data-end=\"2284\">Exemple :<\/em><br data-start=\"2284\" data-end=\"2287\" \/>Coulage b\u00e9ton avant le 01\/07\/2025<\/p><h3 data-section-id=\"1y9xh15\" data-start=\"2329\" data-end=\"2370\">\u00a0<\/h3><h3 data-section-id=\"1y9xh15\" data-start=\"2329\" data-end=\"2370\"><span role=\"text\">\ud83d\udfe2 <strong data-start=\"2336\" data-end=\"2368\">c. Finish On or After (FOOA)<\/strong><\/span><\/h3><ul data-start=\"2371\" data-end=\"2407\"><li data-section-id=\"dapljd\" data-start=\"2371\" data-end=\"2407\">Ne peut pas finir avant une date<\/li><\/ul><p data-start=\"2409\" data-end=\"2453\">\u00a0<\/p><p data-start=\"2409\" data-end=\"2453\"><em data-start=\"2412\" data-end=\"2423\">Exemple :<\/em><br data-start=\"2423\" data-end=\"2426\" \/>Tests jusqu\u2019au 15\/12\/2025<\/p><h3 data-section-id=\"1642srp\" data-start=\"2460\" data-end=\"2495\">\u00a0<\/h3><h3 data-section-id=\"1642srp\" data-start=\"2460\" data-end=\"2495\"><span role=\"text\">\ud83d\udfe2 <strong data-start=\"2467\" data-end=\"2493\">d. Finish On or Before<\/strong><\/span><\/h3><ul data-start=\"2496\" data-end=\"2525\"><li data-section-id=\"jpf0aq\" data-start=\"2496\" data-end=\"2525\">Doit finir avant une date<\/li><\/ul><p data-start=\"2527\" data-end=\"2578\">\u00a0<\/p><p data-start=\"2527\" data-end=\"2578\"><em data-start=\"2530\" data-end=\"2541\">Exemple :<\/em><br data-start=\"2541\" data-end=\"2544\" \/>Clos couvert avant le 01\/11\/2025<\/p><h2 data-section-id=\"13o4fc0\" data-start=\"2585\" data-end=\"2635\">\u00a0<\/h2><h2 data-section-id=\"13o4fc0\" data-start=\"2585\" data-end=\"2635\"><span role=\"text\"><strong data-start=\"2588\" data-end=\"2635\">Hard vs Soft Constraints : diff\u00e9rences cl\u00e9s<\/strong><\/span><\/h2><div class=\"TyagGW_tableContainer\"><div class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"><table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"2637\" data-end=\"2995\"><thead data-start=\"2637\" data-end=\"2691\"><tr data-start=\"2637\" data-end=\"2691\"><th class=\"\" data-start=\"2637\" data-end=\"2647\" data-col-size=\"sm\">Crit\u00e8re<\/th><th class=\"\" data-start=\"2647\" data-end=\"2668\" data-col-size=\"sm\">Contraintes fortes<\/th><th class=\"\" data-start=\"2668\" data-end=\"2691\" data-col-size=\"sm\">Contraintes souples<\/th><\/tr><\/thead><tbody data-start=\"2743\" data-end=\"2995\"><tr data-start=\"2743\" data-end=\"2780\"><td data-start=\"2743\" data-end=\"2757\" data-col-size=\"sm\">Logique CPM<\/td><td data-col-size=\"sm\" data-start=\"2757\" data-end=\"2767\">Ignor\u00e9e<\/td><td data-col-size=\"sm\" data-start=\"2767\" data-end=\"2780\">Respect\u00e9e<\/td><\/tr><tr data-start=\"2781\" data-end=\"2814\"><td data-start=\"2781\" data-end=\"2795\" data-col-size=\"sm\">Flexibilit\u00e9<\/td><td data-col-size=\"sm\" data-start=\"2795\" data-end=\"2804\">Faible<\/td><td data-col-size=\"sm\" data-start=\"2804\" data-end=\"2814\">\u00c9lev\u00e9e<\/td><\/tr><tr data-start=\"2815\" data-end=\"2859\"><td data-start=\"2815\" data-end=\"2824\" data-col-size=\"sm\">Risque<\/td><td data-col-size=\"sm\" data-start=\"2824\" data-end=\"2849\">\u00c9lev\u00e9 (negative float)<\/td><td data-col-size=\"sm\" data-start=\"2849\" data-end=\"2859\">Faible<\/td><\/tr><tr data-start=\"2860\" data-end=\"2934\"><td data-start=\"2860\" data-end=\"2868\" data-col-size=\"sm\">Usage<\/td><td data-col-size=\"sm\" data-start=\"2868\" data-end=\"2906\">Obligations contractuelles strictes<\/td><td data-col-size=\"sm\" data-start=\"2906\" data-end=\"2934\">Pilotage &amp; planification<\/td><\/tr><tr data-start=\"2935\" data-end=\"2995\"><td data-start=\"2935\" data-end=\"2946\" data-col-size=\"sm\">Exemples<\/td><td data-col-size=\"sm\" data-start=\"2946\" data-end=\"2981\">Mandatory Start\/Finish, Start On<\/td><td data-col-size=\"sm\" data-start=\"2981\" data-end=\"2995\">SOOA, FOOB<\/td><\/tr><\/tbody><\/table><\/div><\/div><h2 data-section-id=\"sy2oir\" data-start=\"3002\" data-end=\"3058\">\u00a0<\/h2><h2 data-section-id=\"sy2oir\" data-start=\"3002\" data-end=\"3058\"><span role=\"text\"><strong data-start=\"3005\" data-end=\"3058\">Exemple : Negative Float caus\u00e9 par une contrainte<\/strong><\/span><\/h2><h3 data-section-id=\"jkp0q7\" data-start=\"3060\" data-end=\"3081\"><span role=\"text\"><strong data-start=\"3067\" data-end=\"3081\">Sc\u00e9nario :<\/strong><\/span><\/h3><ul data-start=\"3082\" data-end=\"3202\"><li data-section-id=\"c8yc9h\" data-start=\"3082\" data-end=\"3112\">Activit\u00e9 : <em data-start=\"3095\" data-end=\"3110\">Final Testing<\/em><\/li><li data-section-id=\"nay5td\" data-start=\"3113\" data-end=\"3163\">Contrainte : <strong data-start=\"3128\" data-end=\"3161\">Mandatory Finish \u2013 30\/10\/2025<\/strong><\/li><li data-section-id=\"15rrqm7\" data-start=\"3164\" data-end=\"3202\">Calcul logique : fin au 05\/11\/2025<\/li><\/ul><h3 data-section-id=\"1ji58u3\" data-start=\"3204\" data-end=\"3224\">\u00a0<\/h3><h3 data-section-id=\"1ji58u3\" data-start=\"3204\" data-end=\"3224\"><span role=\"text\"><strong data-start=\"3210\" data-end=\"3224\">R\u00e9sultat :<\/strong><\/span><\/h3><ul data-start=\"3225\" data-end=\"3249\"><li data-section-id=\"1vnw4y4\" data-start=\"3225\" data-end=\"3249\">Float = <strong data-start=\"3235\" data-end=\"3247\">-5 jours<\/strong><\/li><\/ul><p data-start=\"3251\" data-end=\"3296\">\ud83d\udc49 Indique un conflit planning \/ contrainte<\/p><h2 data-section-id=\"iu2gth\" data-start=\"3303\" data-end=\"3366\">\u00a0<\/h2><h2 data-section-id=\"iu2gth\" data-start=\"3303\" data-end=\"3366\"><span role=\"text\"><strong data-start=\"3306\" data-end=\"3366\">Bonnes pratiques (niveau expert \u2013 Delay &amp; Risk Strategy)<\/strong><\/span><\/h2><h3 data-section-id=\"crdywn\" data-start=\"3368\" data-end=\"3421\"><span role=\"text\">\u2705 <strong data-start=\"3374\" data-end=\"3421\">1. Utiliser les contraintes avec parcimonie<\/strong><\/span><\/h3><p data-start=\"3422\" data-end=\"3465\">Trop de contraintes = planning artificiel<\/p><h3 data-section-id=\"1xtd2we\" data-start=\"3472\" data-end=\"3520\">\u00a0<\/h3><h3 data-section-id=\"1xtd2we\" data-start=\"3472\" data-end=\"3520\"><span role=\"text\">\u2705 <strong data-start=\"3478\" data-end=\"3520\">2. Privil\u00e9gier les contraintes souples<\/strong><\/span><\/h3><p data-start=\"3521\" data-end=\"3561\">Maintiennent l\u2019int\u00e9grit\u00e9 du mod\u00e8le CPM<\/p><h3 data-section-id=\"1hj1x31\" data-start=\"3568\" data-end=\"3609\">\u00a0<\/h3><h3 data-section-id=\"1hj1x31\" data-start=\"3568\" data-end=\"3609\"><span role=\"text\">\u2705 <strong data-start=\"3574\" data-end=\"3609\">3. Surveiller le negative float<\/strong><\/span><\/h3><p data-start=\"3610\" data-end=\"3644\">\ud83d\udc49 Indicateur critique de d\u00e9rive<\/p><h3 data-section-id=\"pcjsmg\" data-start=\"3651\" data-end=\"3691\">\u00a0<\/h3><h3 data-section-id=\"pcjsmg\" data-start=\"3651\" data-end=\"3691\"><span role=\"text\">\u2705 <strong data-start=\"3657\" data-end=\"3691\">4. Justifier chaque contrainte<\/strong><\/span><\/h3><ul data-start=\"3692\" data-end=\"3741\"><li data-section-id=\"7s351r\" data-start=\"3692\" data-end=\"3709\">Contractuelle<\/li><li data-section-id=\"gl02s0\" data-start=\"3710\" data-end=\"3727\">R\u00e9glementaire<\/li><li data-section-id=\"h0sluc\" data-start=\"3728\" data-end=\"3741\">Technique<\/li><\/ul><p data-start=\"3743\" data-end=\"3780\">\ud83d\udc49 Indispensable en contexte claims<\/p><h3 data-section-id=\"p1jx2a\" data-start=\"3787\" data-end=\"3835\">\u00a0<\/h3><h3 data-section-id=\"p1jx2a\" data-start=\"3787\" data-end=\"3835\"><span role=\"text\">\u2705 <strong data-start=\"3793\" data-end=\"3835\">5. Tester le planning sans contraintes<\/strong><\/span><\/h3><p data-start=\"3836\" data-end=\"3884\">\ud83d\udc49 V\u00e9rifier la robustesse de la logique r\u00e9seau<\/p><h2 data-section-id=\"9dt57q\" data-start=\"3891\" data-end=\"3908\">\u00a0<\/h2><h2 data-section-id=\"9dt57q\" data-start=\"3891\" data-end=\"3908\"><span role=\"text\"><strong data-start=\"3894\" data-end=\"3908\">Conclusion<\/strong><\/span><\/h2><p data-start=\"3910\" data-end=\"3983\">Les contraintes dans Primavera P6 sont des outils puissants de pilotage :<\/p><ul data-start=\"3985\" data-end=\"4104\"><li data-section-id=\"zaaf19\" data-start=\"3985\" data-end=\"4039\">Bien utilis\u00e9es \u2192 <strong data-start=\"4004\" data-end=\"4037\">planning r\u00e9aliste et ma\u00eetris\u00e9<\/strong><\/li><li data-section-id=\"q4r492\" data-start=\"4040\" data-end=\"4104\">Mal utilis\u00e9es \u2192 <strong data-start=\"4058\" data-end=\"4102\">planning biais\u00e9 et juridiquement fragile<\/strong><\/li><\/ul><p data-start=\"4106\" data-end=\"4206\">\u00a0<\/p><p data-start=\"4106\" data-end=\"4206\">\ud83d\udc49 R\u00e8gle d\u2019or :<br data-start=\"4121\" data-end=\"4124\" \/><strong data-start=\"4124\" data-end=\"4206\">La logique r\u00e9seau doit primer \u2014 les contraintes ne doivent jamais la remplacer<\/strong><\/p><p data-start=\"4213\" data-end=\"4358\" data-is-last-node=\"\" data-is-only-node=\"\">\u00a0<\/p><p data-start=\"4213\" data-end=\"4358\" data-is-last-node=\"\" data-is-only-node=\"\"><strong data-start=\"4216\" data-end=\"4358\" data-is-last-node=\"\">Dans vos projets, utilisez-vous plut\u00f4t des contraintes hard ou soft ?<br data-start=\"4287\" data-end=\"4290\" \/>Avez-vous d\u00e9j\u00e0 g\u00e9r\u00e9 un planning avec du negative float important ?<\/strong><\/p><\/div><\/div><\/div><\/div><div class=\"z-0 flex min-h-[46px] justify-start\">\u00a0<\/div><div class=\"mt-3 w-full empty:hidden\"><div 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complexe qui n\u00e9cessite de trouver un \u00e9quilibre entre une logique r\u00e9seau (CPM) et des contraintes r\u00e9elles du projet. 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