From f022956c44e9d45878dcd9bfacdca753e9c44b06 Mon Sep 17 00:00:00 2001
From: ysCha <yscha@interplug.co.kr>
Date: Tue, 21 Apr 2026 16:10:15 +0900
Subject: [PATCH] =?UTF-8?q?trestles[]=EC=97=90=20subModuleTpCd=20=EC=B6=94?=
 =?UTF-8?q?=EA=B0=80=20(Cross=20Mix=20=EC=8B=9D=EB=B3=84=EC=9A=A9,=20?=
 =?UTF-8?q?=EB=8B=A8=EC=9D=BC/=EB=8F=99=EA=B3=84=EC=97=B4=EC=9D=80=20?=
 =?UTF-8?q?=EB=B9=88=20=EA=B0=92)?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/hooks/module/useTrestle.js | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/hooks/module/useTrestle.js b/src/hooks/module/useTrestle.js
index b24e28d1..c13dc67f 100644
--- a/src/hooks/module/useTrestle.js
+++ b/src/hooks/module/useTrestle.js
@@ -2601,8 +2601,16 @@ export const useTrestle = () => {
     const { constTp } = moduleSelection.construction
     const { addRoof } = moduleSelection
 
+    // 서브모듈 코드 판별: 서로 다른 계열 혼합(예: DC3=D+C3)일 때만 서브모듈 코드 세팅
+    // 단일(C3) 또는 같은 계열 혼합(C1C2C3)은 빈 문자열
+    const subCodes = module.itemTp?.match(/[A-Z]\d*/g) || []
+    const uniquePrefixes = new Set(subCodes.map((code) => code.charAt(0)))
+    const isDifferentSeriesMix = subCodes.length > 1 && uniquePrefixes.size > 1
+    const subModuleTpCd = isDifferentSeriesMix ? surface.modules?.[0]?.moduleInfo?.moduleTpCd || '' : ''
+
     return {
       moduleTpCd: module.itemTp,
+      subModuleTpCd,
       roofMatlCd: parent.roofMaterial.roofMatlCd,
       mixMatlNo: module.mixMatlNo,
       raftBaseCd: addRoof.raft ?? addRoof.raftBaseCd,