diff --git a/backend-node/src/services/YardLayoutService.ts b/backend-node/src/services/YardLayoutService.ts
index 64572739..6b1f3fd1 100644
--- a/backend-node/src/services/YardLayoutService.ts
+++ b/backend-node/src/services/YardLayoutService.ts
@@ -157,14 +157,14 @@ export class YardLayoutService {
       layoutId,
       data.material_code || null,
       data.material_name || null,
-      data.quantity || null,
+      data.quantity ? parseInt(String(data.quantity), 10) : null,
       data.unit || null,
-      data.position_x || 0,
-      data.position_y || 0,
-      data.position_z || 0,
-      data.size_x || 5,
-      data.size_y || 5,
-      data.size_z || 5,
+      data.position_x ? parseFloat(String(data.position_x)) : 0,
+      data.position_y ? parseFloat(String(data.position_y)) : 0,
+      data.position_z ? parseFloat(String(data.position_z)) : 0,
+      data.size_x ? parseFloat(String(data.size_x)) : 5,
+      data.size_y ? parseFloat(String(data.size_y)) : 5,
+      data.size_z ? parseFloat(String(data.size_z)) : 5,
       data.color || "#9ca3af", // 미설정 시 회색
       data.data_source_type || null,
       data.data_source_config ? JSON.stringify(data.data_source_config) : null,
@@ -204,14 +204,20 @@ export class YardLayoutService {
     const result = await pool.query(query, [
       data.material_code !== undefined ? data.material_code : null,
       data.material_name !== undefined ? data.material_name : null,
-      data.quantity !== undefined ? data.quantity : null,
+      data.quantity !== undefined ? parseInt(String(data.quantity), 10) : null,
       data.unit !== undefined ? data.unit : null,
-      data.position_x !== undefined ? data.position_x : null,
-      data.position_y !== undefined ? data.position_y : null,
-      data.position_z !== undefined ? data.position_z : null,
-      data.size_x !== undefined ? data.size_x : null,
-      data.size_y !== undefined ? data.size_y : null,
-      data.size_z !== undefined ? data.size_z : null,
+      data.position_x !== undefined
+        ? parseFloat(String(data.position_x))
+        : null,
+      data.position_y !== undefined
+        ? parseFloat(String(data.position_y))
+        : null,
+      data.position_z !== undefined
+        ? parseFloat(String(data.position_z))
+        : null,
+      data.size_x !== undefined ? parseFloat(String(data.size_x)) : null,
+      data.size_y !== undefined ? parseFloat(String(data.size_y)) : null,
+      data.size_z !== undefined ? parseFloat(String(data.size_z)) : null,
       data.color !== undefined ? data.color : null,
       data.data_source_type !== undefined ? data.data_source_type : null,
       data.data_source_config !== undefined