diff --git a/src/hooks/module/useTrestle.js b/src/hooks/module/useTrestle.js
index 098f4c7e..f6556af2 100644
--- a/src/hooks/module/useTrestle.js
+++ b/src/hooks/module/useTrestle.js
@@ -1555,7 +1555,28 @@ export const useTrestle = () => {
 
   //랙 없음 인 경우 지지금구 설치
   const installBracketWithOutRack = (surface, exposedBottomModules, leftExposedHalfBottomModules, rightExposedHalfBottomPoints, isChidory) => {
-    let { rackQty, rackIntvlPct, moduleIntvlHor, moduleIntvlVer, lessSupFitQty, lessSupFitIntvlPct } = surface.trestleDetail
+    let { rackQty, rackIntvlPct, moduleIntvlHor, moduleIntvlVer, lessSupFitQty, lessSupFitIntvlPct, moduleMaxRows } = surface.trestleDetail
+    const checkList = []
+
+    exposedBottomModules.forEach((module) => {
+      checkList.push(module.leftRows, module.rightRows, module.centerRows)
+    })
+
+    leftExposedHalfBottomModules.forEach((module) => {
+      checkList.push(module.leftRows, module.rightRows, module.centerRows)
+    })
+
+    rightExposedHalfBottomPoints.forEach((module) => {
+      checkList.push(module.leftRows, module.rightRows, module.centerRows)
+    })
+    const isAllCheckMaxRows = checkList.every((item) => item <= moduleMaxRows)
+
+    if (!isAllCheckMaxRows) {
+      const msg = `段数の上限は${moduleMaxRows}段です。 上限より上の段には設置できません`
+      swalFire({ title: msg, type: 'alert' })
+      throw new Error('moduleMaxRows exceeded')
+    }
+
     rackQty = lessSupFitQty
     rackIntvlPct = lessSupFitIntvlPct
     const direction = surface.direction
@@ -1647,6 +1668,7 @@ 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