diff --git a/main.cpp b/main.cpp
index 3933816..6e3d76d 100644
--- a/main.cpp
+++ b/main.cpp
@@ -6,7 +6,7 @@ int main(int argc, char* argv[]) {
         Chose::initialSeed = (unsigned int) atoi(argv[1]);
 
 	std::cout << "Initial seed = " << Chose::initialSeed << std::endl;
-	float size = 500 * 100;
+	float size = 200 * 100;
 	Vertex ne(size, size, 0);
 	Vertex se(size, 0, 0);
 	Vertex sw(0, 0, 0);
diff --git a/rules/architecture/batiment.cpp b/rules/architecture/batiment.cpp
index 35adc2c..2e19c96 100644
--- a/rules/architecture/batiment.cpp
+++ b/rules/architecture/batiment.cpp
@@ -20,11 +20,17 @@ bool BatimentQuad_::split() {
 			addChild(new BatimentQuad_(Quad(q[SE], s, n, q[NE]), true, QuadBool(qb[E],qb[S],false,qb[N])));
 			addChild(new BatimentQuad_(Quad(q[NW], n, s, q[SW]), true, QuadBool(qb[W],qb[N],false,qb[S])));
 		} else {
-			Quad ch = c.offsetNormal(Dimensions::hauteurEtage);
-			ch = ch.insetNESW(30);
-			c = c.insetNESW(30);
-            addChild(new ToitQuad(ch, Dimensions::hauteurToit));
-            addChild(new EtageQuad(c,ch));
+			float randEtages = floatInRange(seed, 2, 0.f, 1.f);
+			int nbEtages = 1 + (int)(randEtages * randEtages * (Dimensions::maxEtages - 1));
+			Quad q = c;
+			//ch = ch.insetNESW(30);
+			Quad qh;
+			for (int i = 0; i < nbEtages; i++) {
+				qh = q.offsetNormal(floatInRange(seed, 3+i, Dimensions::hauteurEtage*0.9f, Dimensions::hauteurEtage*1.1f));
+				addChild(new EtageQuad(q,qh));
+				q = qh;
+			}
+            addChild(new ToitQuad(qh, Dimensions::hauteurToit));
 		}
 	} else {
 		addChild(new TerrainQuad(c));
diff --git a/rules/architecture/couleursDimensions.hh b/rules/architecture/couleursDimensions.hh
index 6ba0a50..84b61e5 100644
--- a/rules/architecture/couleursDimensions.hh
+++ b/rules/architecture/couleursDimensions.hh
@@ -20,6 +20,8 @@ public:
 		);
 	};
 	static const unsigned int mur = 0xF1E3AD;
+	static const unsigned int plafond = mur;
+	static const unsigned int plancher = mur;
 	static const unsigned int toit = 0x961618;
 	static const unsigned int route = 0x363636;
 	static const unsigned int trottoir = 0x666666;
@@ -37,6 +39,7 @@ public:
 	static const unsigned int largeurRoute = 200;
 	static const unsigned int largeurTrottoir = 140;
 	static const unsigned int hauteurEtage = 300;
+	static const unsigned int maxEtages = 5;
 	static const unsigned int hauteurToit = 200;
 	static const unsigned int hauteurTrottoir = 20;
 	static const unsigned int hauteurMaxBatiment = hauteurTrottoir + hauteurEtage + hauteurToit;
diff --git a/rules/architecture/etage.cpp b/rules/architecture/etage.cpp
index 81414d9..043f858 100644
--- a/rules/architecture/etage.cpp
+++ b/rules/architecture/etage.cpp
@@ -30,5 +30,7 @@ bool EtageQuad::split() {
 }
 
 void EtageQuad::triangulation() {
-    addGPUOcto(c,ch, 0xF1E0E0);
+    addGPUFourQuads(c,ch, Couleurs::mur);
+    addGPUQuad(ch.offsetNormal(-30), Couleurs::plafond);
+    addGPUQuad(c, Couleurs::plancher);
 }
diff --git a/rules/chose.cpp b/rules/chose.cpp
index ad0af73..de66736 100644
--- a/rules/chose.cpp
+++ b/rules/chose.cpp
@@ -141,8 +141,9 @@ void Chose::addBBPoints(const Quad q, float height) {
 }
 
 void Chose::updateAABB() {
-	float splitFactor = 5.f * LODFactor();
-	float mergeFactor = 6.f * LODFactor();
+	// TODO : Debug : devrait être 5.f, 6.f
+	float splitFactor = 2.f * LODFactor();
+	float mergeFactor = 3.f * LODFactor();
 	float nonFacingFactor = 2.f/3.f;
 	lod.firstBBPoint = true;
 	getBoundingBoxPoints();