From 51209cccf9d57650bffe32575f0154c5d3f950b0 Mon Sep 17 00:00:00 2001
From: ypshim <ypshim71@gmail.com>
Date: Tue, 10 Nov 2026 17:06:10 +0900
Subject: [PATCH] =?UTF-8?q?fix(rebar):=20=EA=BA=BE=EC=9D=B8=20=EB=8B=A4?=
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꺾인 코핑이면 기둥 수와 관계없이 T형(기둥 1개) 코핑 행을 내어 산외교 P11(3주형)의 전단철근 등 수량이
틀렸다. 기둥이 1개일 때만 T형 행, 2개 이상이면 꺾여도 다주형 행(편 좌표 계산)을 쓴다.

Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>
---
 src/core/rebar/summary.ts |  5 +++--
 tests/kink-steps.test.ts  | 14 ++++++++++++++
 2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/src/core/rebar/summary.ts b/src/core/rebar/summary.ts
index 24a0524..dcdff98 100644
--- a/src/core/rebar/summary.ts
+++ b/src/core/rebar/summary.ts
@@ -237,7 +237,8 @@ export function rebarSummary(
   // Coping (코핑철근.md §5–§8)
   const colS = model.columns.map((c) => c.s * 1000);
   const nCol = Math.max(1, colS.length);
-  if (nCol <= 1 || model.kink !== null) {
+  // A bent multi-column coping keeps the multi-column rules (2026-11-10); only one column uses the T형 rows.
+  if (nCol <= 1) {
   const width = widthLayout(B, model.copingRebar);
   const perRow = width.count / 2; // cycle split, 12 per row
   // CP04 (승인 2026-10-26): the cycle split needs an even count (n + 3), so n must be odd. Warning only; the input is kept.
@@ -400,7 +401,7 @@ export function rebarSummary(
   } else {
     warnings.push({ code: 'RB-F00', message: '현장타설말뚝은 확대기초가 없어 확대기초 철근을 만들지 않습니다.', target: 'footing' });
   }
-  if (nCol > 1 && model.kink === null) {
+  if (nCol > 1) {
     const info = multicolCopingInfo(model, mCoping);
     const grouped = new Map<string, typeof info.bars>();
     for (const b of info.bars) {
diff --git a/tests/kink-steps.test.ts b/tests/kink-steps.test.ts
index 9e25fcd..f2e889a 100644
--- a/tests/kink-steps.test.ts
+++ b/tests/kink-steps.test.ts
@@ -5,6 +5,8 @@ import * as XLSX from 'xlsx';
 import { parseWorkbook } from '../src/core/parseWorkbook';
 import { buildPier, DIM, defaultLevelWidthMm } from '../src/core/geometry';
 import type { PierInput } from '../src/core/types';
+import { rebarSummary } from '../src/core/rebar/summary';
+import { multicolCopingInfo } from '../src/core/rebar/multicol-coping';
 
 // 산외교 P11 (샘플01) with the coping bent 8.767° at IP4 (2026-11-10 검토): back ⑥ g 11.64, ⑦ g 18.49, kink g 15.14.
 const SAMPLE = fileURLToPath(new URL('../project_data/01_엑셀/샘플01_산외교_교각입력데이터.xlsx', import.meta.url));
@@ -131,3 +133,15 @@ describe('받침 번호가 축 반대 방향인 교각 (2026-11-10)', () => {
     expect(b.segments.map((s) => s.s0)).toEqual(a.segments.map((s) => s.s0));
   });
 });
+
+describe('꺾인 다주형 코핑의 철근표 (A, 2026-11-10)', () => {
+  it('uses the multi-column rows, not the one-column T형 rows', () => {
+    const m = buildPier(p11());
+    const rows = rebarSummary(m).rows.filter((r) => r.member === 'coping');
+    const info = multicolCopingInfo(m);
+    for (const name of ['C9', 'C10', 'C11', 'C1', 'C7']) {
+      expect(rows.find((r) => r.name === name)!.count, name).toBe(info.bars.filter((b) => b.name === name).length);
+    }
+    expect(rows.every((r) => r.note.includes('다주형'))).toBe(true);
+  });
+});