diff --git a/src/hooks/module/useTrestle.js b/src/hooks/module/useTrestle.js
index 9c580971..fffe27c9 100644
--- a/src/hooks/module/useTrestle.js
+++ b/src/hooks/module/useTrestle.js
@@ -2,9 +2,10 @@ import { useRecoilValue } from 'recoil'
 import { canvasState, currentAngleTypeSelector } from '@/store/canvasAtom'
 import { POLYGON_TYPE } from '@/common/common'
 import { moduleSelectionDataState } from '@/store/selectedModuleOptions'
-import { getDegreeByChon, getTrestleLength } from '@/util/canvas-util'
+import { getDegreeByChon } from '@/util/canvas-util'
 import { v4 as uuidv4 } from 'uuid'
 import { useMasterController } from '@/hooks/common/useMasterController'
+import { basicSettingState } from '@/store/settingAtom'
 
 // 회로 및 가대설정
 export const useTrestle = () => {
@@ -12,6 +13,7 @@ export const useTrestle = () => {
   const moduleSelectionData = useRecoilValue(moduleSelectionDataState) //다음으로 넘어가는 최종 데이터
   const { getQuotationItem } = useMasterController()
   const currentAngleType = useRecoilValue(currentAngleTypeSelector)
+  const roofSizeSet = useRecoilValue(basicSettingState).roofSizeSet
 
   const apply = () => {
     try {
@@ -1787,6 +1789,16 @@ export const useTrestle = () => {
     return groups
   }
 
+  // 각도에 따른 길이 반환
+  function getTrestleLength(length, degree) {
+    if (roofSizeSet !== 1) {
+      // 복시도 입력이 아닌경우 그냥 길이 return
+      return length
+    }
+    const radians = (degree * Math.PI) / 180
+    return length * Math.cos(radians)
+  }
+
   // 견적서 아이템 조회 api parameter 생성
   const getTrestleParams = (surface) => {
     const result = calculateForApi(surface)
diff --git a/src/util/canvas-util.js b/src/util/canvas-util.js
index 2204eaec..a0442d9f 100644
--- a/src/util/canvas-util.js
+++ b/src/util/canvas-util.js
@@ -1031,8 +1031,3 @@ export function calculateVisibleModuleHeight(sourceWidth, sourceHeight, angle, d
     height: Number(visibleHeight.toFixed(1)), // 소수점 두 자리로 고정
   }
 }
-
-export function getTrestleLength(length, degree) {
-  const radians = (degree * Math.PI) / 180
-  return length * Math.cos(radians)
-}