Bars drawn through several points are one tube each, with every bend rounded by R·tan(φ/2) at the centre-line radius
(inner factor × d + d/2). The inside-radius factors (D16 and below, D19–D25, D29–D35, D38 and above) are inputs in 공통
설정, with KDS-based defaults 2 / 3 / 4 / 5. The size-class limits sit in one place (SIZE_CLASS), which also fixes
D25 (25.4) being read as the D29–D35 class in hookLength. The helper bendDeduction gives the centre-line deduction for
the length option, which is not yet applied to the 철근표 lengths.
Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>
The three 폐합 of one position were drawn at the same x, so their U bars overlapped. Loop i now sits at x + i·2d and its
삿갓 one bar (d) beside its U, so no U meets another loop's U or 삿갓. The 철근표 counts and lengths are unchanged.
The rule is geometry only; the spec (§4.3) needs the stacking note.
Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>
The 철근표 has a selection checkbox per row. Select-all / clear and 선택만 보기 sit above the table. In 선택만 보기 the other
bars are hidden in 3D and the members stay at 50% for context. A 3D click or an alert [보기] selects one bar; the
selection clears when the member tab or the pier changes. The selection is screen state and is not saved to the project.
Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>
On ③ the members, the ground and the blinding concrete are drawn at half opacity without depth writes, so the bars show
through. Outside ③ each part returns to its own opacity. Rebar colours are shaded to 0.8 and slightly glossier so they
read through the members. Approved 2026-10-23.
Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>
Role colours stay the default (spec §6.7). A control on ③ switches to diameter (nominal size, H and S of one size
share a colour, Okabe–Ito palette) or member (받침블럭 · 코핑 · 기둥 · 확대기초). The legend lists only the items
the model has. Highlighting and the state colours are unchanged. Approved 2026-10-23.
Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>
Each member can take its own fck on its ② card. A member without one uses the ③ 공통 fck, and fy stays common.
The rebar table and the 3D model both read the resolved value. The I02 note stays until every fck member has its
own value. The project file stores the values as optional fckByMember and refuses a bad value on open.
Changing the fck is not a shape change, so it is not counted in the pending changes.
Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>
The stair bars in the 철근표 and the 3D model, and the 3D bottom and column bars, were built with the default fck,
so a changed fck did not reach them. buildRebar3D now takes the material, and a material change rebuilds the scene.
Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>
- The 3D model of ③ draws each bar family from the rebar modules (coping top and
bottom bars, shear loops, side bars, column bars and ties, footing B1–B8, bearing
S1/S2) and names every bar as its 철근표 number.
- A table row click highlights the bar in 3D (the others dim); a click on a 3D bar
selects its row in the table and sets the member tab. Drags still rotate.
- The rebar is shown only on ③. Not drawn yet: C14, C15/C16, B9–B12, the couplers,
and the bars of a bent coping.
- Tests: family names and counts (P1 46), highlight behaviour.
- Not verified in a browser.
Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>
- 저장 (Ctrl+S) downloads <교량명>_교각설계.pzr.json; 프로젝트 열기 reads it
back and regenerates every pier without the source workbook.
- Save status in the header: 저장 전 / 변경 있음 · 미저장 / 저장됨. The
snapshot excludes the history so a save is not counted as a change.
- Auto-backup to IndexedDB 0.8 s after changes while unsaved; on start a banner
offers recovery or discard. Storage failures are reported, not fatal.
- beforeunload warns while there are unsaved changes.
- B1 (default-vs-changed tracking) is not added yet: inputs are not editable
until the 2단계 input cards exist.
- Not verified in a browser (no debuggable Chrome in this session).
Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>
- Footings, blindings and piles on a bent axis are placed in their stretch's
frame; 일체기초 is grouped per stretch, so a combined footing never crosses
the kink (separate footings, each aligned with its stretch).
- Footings, blindings and piles are trimmed at the mitre plane like the coping.
- The stage-2 refusal for bent foundations is removed; the Level-half-width
refusal for columns at the kink remains.
- Tests: T형 footing crossing the kink stays in stretch 0; 2주형 with columns
on both sides gives one footing per stretch, with mitre clipping in the scene.
Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>
- buildPier builds on buildAxis: each object carries its stretch k and a local
s from that stretch's base; coping parts are per stretch with the mitre plane
trimming the overlap in the scene (renderer.localClippingEnabled).
- Straight P1 output is unchanged (regression tests pass).
- Bent coping is supported for 현장타설말뚝 only; footings and piles on a bent
axis remain 미실시 until stage 3. Kink outside the coping and columns within
the Level half-width of the kink are refused.
- W03/W04 use coping coordinates (g).
- Tests: constructed 60° bend — world coordinates of bearings, blocks and the
column survive the stretch frames; mitre sides; scene mesh count; refusals.
Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>
- Front and back coping tops that differ by 5 mm or more in any segment are
drawn as two coping parts split at the midline between the bearing rows.
Tolerance 5 mm and midline position are the draft assumptions (Q1·Q2).
- Scene extrudes each coping part across its own width.
- solveIp4 computes IP4 as the intersection of the IP1→IP2 line with the
line through IP3 turned by the bend angle (positive = counter-clockwise,
sign convention to be confirmed). Bent coping geometry remains 미실시.
Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>
- three.js scene in the pier frame (pivot at first column centre)
- coping as extruded elevation outline; columns, footings, piles, blinding, bearing blocks and pads
- four view presets, per-part visibility toggles
- workbook load (sample or file), result table, issue list and undetermined defaults
- frame orientation test and bounding-box test
Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>
