diff --git a/src/hooks/module/useTrestle.js b/src/hooks/module/useTrestle.js
index 8a41149d..0aea8bfc 100644
--- a/src/hooks/module/useTrestle.js
+++ b/src/hooks/module/useTrestle.js
@@ -1627,6 +1627,8 @@ export const useTrestle = () => {
   // 랙 없음의 지지금구를 그린다.
   const drawBracketWithOutRack = (module, rackIntvlPct, count, l, direction, moduleIntvlHor, moduleIntvlVer) => {
     const { leftFindModuleList, rightFindModuleList, centerFindModuleList } = module
+    rackIntvlPct = rackIntvlPct === 0 ? 1 : rackIntvlPct // 0인 경우 1로 변경
+    rackIntvlPct = 100 / rackIntvlPct // 퍼센트로 변경
 
     let { width, height, left, top } = module
     let startPointX
@@ -1641,14 +1643,14 @@ export const useTrestle = () => {
           break
         } else if (direction === 'east') {
           startPointX = left + width
-          startPointY = top + height - height / rackIntvlPct
+          startPointY = top + height - height / rackIntvlPct - 10
           break
         } else if (direction === 'west') {
           startPointX = left
           startPointY = top + height / rackIntvlPct
           break
         } else if (direction === 'north') {
-          startPointX = left + width - width / rackIntvlPct
+          startPointX = left + width - width / rackIntvlPct - 10
           startPointY = top
           break
         }
@@ -1657,7 +1659,7 @@ export const useTrestle = () => {
       case 'R': {
         // 오른쪽부분 시작 점
         if (direction === 'south') {
-          startPointX = left + width - width / rackIntvlPct
+          startPointX = left + width - width / rackIntvlPct - 10
           startPointY = top + height / 2 + height / 2
           break
         } else if (direction === 'east') {
@@ -1666,7 +1668,7 @@ export const useTrestle = () => {
           break
         } else if (direction === 'west') {
           startPointX = left
-          startPointY = top + height - height / rackIntvlPct
+          startPointY = top + height - height / rackIntvlPct - 10
           break
         } else if (direction === 'north') {
           startPointX = left + width / rackIntvlPct