M4: EN 1838:2024 clause map

ROADMAP.md

@@ -32,6 +32,7 @@ luxpath's one-page summary. Details live in:
 
 | Date | Change |
 |---|---|
+| 2026-10-25 | EN 1838:2024 clause map: `docs/standards-parity.md` cites the 2024 clause of every requirement, from the table of contents in the free SIST preview (values stay unverified, gap 4), and lists what 2024 added: specific areas (5.4), safety signs (6), local area and standby lighting (7), the annexes. New parity entries `en1838.specific-areas`, `en1838.local-area`, `en1838.safety-signs`. |
 | 2026-10-22 | Public: the repository opened after a licence check; vulnerability reporting, topics, protected `main` with hosted CI on Linux, macOS and Windows (its first Windows run found a line-ending bug in a test, fixed). |
 | 2026-10-21 | Routes can be given as their floor outline (BIM models draw corridors as rooms), for Ashlar's emergency-lighting plugin (R2.9a). |
 | 2026-10-21 | Walls block light (gap 16): `[[wall]]` in scenes, sight lines tested against every wall piece; the corridor example's minimum drops from 1.45 to 0.60 lx once light no longer passes through its corner; 100 luminaires × 10,000 points × 36 walls in about 90 ms. |

docs/gaps.md

@@ -1,13 +1,13 @@
 # Gaps: what luxpath cannot do yet
 
-> **Last updated:** 2026-10-21 · **Change:** walls block light: row 16 narrowed to point luminaires (no longer an alpha blocker)
+> **Last updated:** 2026-10-25 · **Change:** row 4: clause numbers from the 2024 table of contents; values still unverified
 
 Every known shortfall, ranked by user impact. This is the work list: pick from the top, and remove or update a row
 in the same PR that closes it. **[alpha blocker]** rows fail the alpha gate (ROADMAP.md).
 
 | # | Gap | Why it ranks here | Milestone | Est. h |
 |---|---|---|---|---|
-| 4 | **[alpha blocker]** Requirement values not verified against EN 1838:2024 text | Values in `standards-parity.md` come from secondary sources | M4 | 3 + buying the standard |
+| 4 | **[alpha blocker]** Requirement values not verified against EN 1838:2024 text | Values in `standards-parity.md` come from secondary sources; since 2026-10-25 the clause numbers come from the 2024 table of contents (free preview), the values still do not | M4 | 3 + buying the standard |
 | 6 | **[alpha blocker]** No EN 1838 checks | The project's purpose | M4 | 25–40 |
 | 7 | **[alpha blocker]** No independent validation | Trust: nobody should rely on unvalidated numbers | M6 | 10–20 + human |
 | 10 | No reports beyond the terminal | Designers hand over documents | M5 | 15–25 |

docs/research.md

@@ -27,6 +27,14 @@ claims are marketing until checked.
   Designs made to the 2013 centre-line rule may no longer comply. This is a concrete reason for a new tool.
 - Also new: a procedure for escape routes through open areas, local area lighting, more detail for points of
   emphasis and high-risk areas, and an informative Annex C (lockdown and prolonged power loss).
+- **Free preview (2026-10-25):** SIST, the Slovenian body, and iTeh publish the first 11 pages of SIST EN 1838:2025
+  free (kept in `plan/standards/`, never committed). It ends inside clause 3, so it holds no requirement value, but
+  its table of contents gives the 2024 clause numbers (now in `docs/standards-parity.md`) and its foreword lists the
+  changes from 2013: full-width escape routes, more detail for points of emphasis and specific areas of hazard
+  (new 5.4: toilets and changing rooms, public indoor swimming pools, plant rooms), and the lockdown considerations.
+  It also shows local area lighting (7.1) and standby lighting (7.2) as clauses of their own, safety signs as
+  clause 6, informative annexes on durations and activation times (A) and on-site measurement (B), and national
+  A-deviations (D).
 - Read with EN 50172:2024.
 
 ## 3. Existing tools

docs/standards-parity.md

@@ -1,38 +1,55 @@
 # EN 1838:2024 coverage
 
-> **Last updated:** 2026-10-16 · **Change:** initial, from secondary sources
+> **Last updated:** 2026-10-25 · **Change:** clause numbers from the 2024 edition's table of contents; rows for
+> specific areas (5.4), safety signs (6), local area and standby lighting (7)
 
 The requirements luxpath checks, one row each. **Every value below is "unverified"**: it comes from manufacturer
-guides and summaries (see `docs/research.md`), not from the standard's text. Clause numbers are left blank until
-someone checks the purchased standard (gap 4). Values are facts restated in our own words; never paste the
-standard's text here (`AGENTS.md` §1.1).
+guides and summaries (see `docs/research.md`), not from the standard's text (gap 4). Values are facts restated in
+our own words; never paste the standard's text here (`AGENTS.md` §1.1).
 
-Context: EN 1838:2024 replaced the 2013 edition. National bodies publish the same text under their own number and
-year: **UNI EN 1838:2025** in Italy (in force 6 Feb 2025, [UNI store](https://store.uni.com/uni-en-1838-2025)),
-BS EN 1838:2024 in the UK (31 Dec 2024), NEN-EN 1838:2025 in the Netherlands. The requirements are identical. It is meant to be read with **EN 50172:2024** (system design, duration, maintenance). National rules may add
-to it, for example longer durations.
+**Clause numbers** come from the 2024 edition's table of contents, read in the free preview SIST and iTeh publish
+(SIST EN 1838:2025, kept in the git-ignored `plan/standards/`). The preview ends inside clause 3 (terms and
+definitions), so it confirms the structure and the list of changes, not a single requirement value. "Not in the
+preview" means the table of contents does not show which clause holds the requirement.
+
+Context: EN 1838:2024 replaced the 2013 edition. Every CEN member adopts the same text under its own number and
+year (the European foreword names the countries, Italy and Slovenia among them): **UNI EN 1838:2025** in Italy (in
+force 6 Feb 2025, [UNI store](https://store.uni.com/uni-en-1838-2025)), BS EN 1838:2024 in the UK (31 Dec 2024),
+NEN-EN 1838:2025 in the Netherlands, SIST EN 1838:2025 in Slovenia. National legal deviations ("A-deviations") are
+listed in Annex D, which the preview does not reach. It is read with **EN 50172:2024** (system design, duration,
+maintenance). National rules may add to it, for example longer durations.
+
+The changes from 2013 the foreword lists: escape-route requirements now cover the route's **full width**; more
+detail for **points of emphasis** and **specific areas of hazard**; considerations for lockdowns and long periods
+without power, as an informative annex.
 
 ## Requirements
 
 | Requirement | Value (unverified) | Clause | Parity id | Status |
 |---|---|---|---|---|
-| Escape routes: minimum horizontal illuminance on the floor **over the full width** (new in 2024; 2013 used the centre line and a central band) | ≥ 1 lx | | `en1838.escape-route-full-width` | planned |
-| Escape routes: uniformity | max/min ≤ 40:1 | | `en1838.escape-route-uniformity` | planned |
-| Escape routes through open areas: new procedure in 2024 | to read | | `en1838.escape-route-full-width` | planned |
-| Open (anti-panic) areas: minimum horizontal illuminance on the floor, excluding a border | ≥ 0.5 lx, border 0.5 m | | `en1838.open-area` | planned |
-| Open areas: which areas need it (2013 summaries say ≥ 60 m², or by risk assessment) | to read | | `en1838.open-area` | planned |
-| Open areas: uniformity | max/min ≤ 40:1 | | `en1838.open-area` | planned |
-| High-risk task areas: maintained illuminance relative to normal lighting | ≥ 10 % of normal and ≥ 15 lx (2013 summaries) | | `en1838.high-risk` | planned |
-| High-risk task areas: uniformity | ≥ 0.1 (2013 summaries) | | `en1838.high-risk` | planned |
-| Points of emphasis and safety equipment (exits, changes of direction and level, fire-fighting, first aid, call points): illuminance near them; more detail in 2024 | to read | | `en1838.points-of-emphasis` | planned |
-| Local area lighting (new in 2024) | to read | | — | not yet planned |
-| Adaptive escape-route emergency lighting (in scope per UNI's summary) | to read | | — | not yet planned |
-| Disability glare: maximum luminous intensity by mounting height, in the field of view | table by mounting height | | `en1838.glare-limits` | planned |
-| Colour rendering of emergency light | Ra ≥ 40 | | `en1838.declarations` | planned |
-| Response time: share of required illuminance within a time limit | 50 % within 5 s, 100 % within 60 s | | `en1838.declarations` | planned |
-| Duration | minimum 1 h (often longer by national rules) | | `en1838.declarations` | planned |
-| Annex C: lockdown and prolonged power loss (new in 2024) | informative | | — | out of scope |
-| Safety signs (luminance, contrast, viewing distance) | to read | | — | later |
+| Escape routes: minimum horizontal illuminance on the floor **over the full width** (new in 2024; 2013 used the centre line and a central band) | ≥ 1 lx | 5.1 | `en1838.escape-route-full-width` | planned |
+| Escape routes: uniformity | max/min ≤ 40:1 | 5.1 | `en1838.escape-route-uniformity` | planned |
+| Escape routes through open areas: new procedure in 2024 | to read | 5.1 or 5.2, not in the preview | `en1838.escape-route-full-width` | planned |
+| Open (anti-panic) areas: minimum horizontal illuminance on the floor, excluding a border | ≥ 0.5 lx, border 0.5 m | 5.2 | `en1838.open-area` | planned |
+| Open areas: which areas need it (2013 summaries say ≥ 60 m², or by risk assessment) | to read | 5.2 | `en1838.open-area` | planned |
+| Open areas: uniformity | max/min ≤ 40:1 | 5.2 | `en1838.open-area` | planned |
+| High-risk task areas: maintained illuminance relative to normal lighting | ≥ 10 % of normal and ≥ 15 lx (2013 summaries) | 5.3 | `en1838.high-risk` | planned |
+| High-risk task areas: uniformity | ≥ 0.1 (2013 summaries) | 5.3 | `en1838.high-risk` | planned |
+| Points of emphasis and safety equipment (exits, changes of direction and level, fire-fighting, first aid, call points): illuminance near them; more detail in 2024 | to read | 4.2 | `en1838.points-of-emphasis` | planned |
+| Toilets and changing rooms (new in 2024) | to read | 5.4.1 | `en1838.specific-areas` | planned |
+| Public indoor swimming pools (new in 2024) | to read | 5.4.2 | `en1838.specific-areas` | planned |
+| Motor generator, control, switch and plant rooms (new in 2024) | to read | 5.4.3 | `en1838.specific-areas` | planned |
+| Local area lighting (new in 2024) | to read | 7.1 (Annex C, informative) | `en1838.local-area` | planned |
+| Standby lighting: lighting that lets normal activities continue | to read | 7.2 | — | out of scope (not escape lighting) |
+| Adaptive emergency escape lighting (in the scope; techniques in CEN/TS 17951) | to read | 1 | — | not yet planned |
+| Disability glare: maximum luminous intensity by mounting height, in the field of view | table by mounting height | not in the preview | `en1838.glare-limits` | planned |
+| Colour rendering of emergency light | Ra ≥ 40 | not in the preview | `en1838.declarations` | planned |
+| Response time: share of required illuminance within a time limit | 50 % within 5 s, 100 % within 60 s | Annex A (informative); the normative clause is not in the preview | `en1838.declarations` | planned |
+| Duration | minimum 1 h (often longer by national rules) | Annex A (informative); the normative clause is not in the preview | `en1838.declarations` | planned |
+| Safety signs: conformity, illumination, viewing distance and mounting height | to read | 6.1–6.4 | `en1838.safety-signs` | planned |
+| Annex B: on-site illuminance and luminance measurement (methods A–D, initial and five-year verification) | informative | Annex B | — | later (comparing measurements with calculations) |
+| Lockdown and prolonged power loss | informative | Annex C per the foreword; the table of contents calls Annex C "Local area lighting": to read | — | out of scope |
+| National deviations (A-deviations) | to read, for Italy first | Annex D | — | to read |
 
 Declared values (duration, response time, colour rendering) can't be calculated from photometry: luxpath records
 them as inputs, shows them in the report, and checks them against the requirement.

docs/status.md

@@ -1,10 +1,17 @@
 # Status
 
-> **Last updated:** 2026-10-21
+> **Last updated:** 2026-10-25
 
 **Milestone:** M3 done (scene and `luxpath check`); M1–M2 done (photometry readers, engine). **Direction under study:** EN 1838 checks on IFC models
 (docs/research.md §6–7). The IFC inspector (`luxpath inspect-ifc`, an early piece of M7) is done.
 
+## EN 1838:2024 clause map (2026-10-25)
+`docs/standards-parity.md` now cites the 2024 clause of every requirement, from the table of contents of the free
+SIST EN 1838:2025 preview; the values are still from secondary sources (gap 4). The preview also shows what the 2024
+edition added, now rows and parity entries: specific areas (5.4: toilets and changing rooms, public indoor swimming
+pools, plant rooms), safety signs (6), local area lighting (7.1). Next: the scene's area kinds for 5.4 and 7.1, and a
+finding per requirement, each "cannot verify" until its value is verified.
+
 ## Walls (2026-10-21)
 Scenes have `[[wall]]`s (polylines with a height); a luminaire whose sight line to a point crosses one gives that
 point nothing. In the corridor example the minimum on the route drops from 1.45 lx to 0.60 lx once light no longer
@@ -48,6 +55,7 @@ FireExit flags. Luminaires collapse into few types (410 → 5), so a photometry
 
 ## Blockers
 - None. **Before M4:** the EN 1838:2024 text (Italian edition UNI EN 1838:2025) is needed to verify values (gap 4).
+  The free SIST preview (`plan/standards/`) gave the 2024 clause numbers and the list of changes, but no values.
 
 ## Open questions (owner)
 - Practitioner questions in `docs/research.md` §5.

parity/features.toml

@@ -261,6 +261,30 @@ tier = "P1"
 milestone = "M4"
 status = "planned"
 
+[[feature]]
+id = "en1838.specific-areas"
+title = "Specific areas new in 2024: toilets and changing rooms, public indoor swimming pools, plant rooms (5.4)"
+area = "en1838"
+tier = "P1"
+milestone = "M4"
+status = "planned"
+
+[[feature]]
+id = "en1838.local-area"
+title = "Local area lighting, new in 2024 (7.1)"
+area = "en1838"
+tier = "P2"
+milestone = "M4"
+status = "planned"
+
+[[feature]]
+id = "en1838.safety-signs"
+title = "Safety signs: illumination, viewing distance and mounting height (6)"
+area = "en1838"
+tier = "P1"
+milestone = "M4"
+status = "planned"
+
 [[feature]]
 id = "en1838.edition-2013"
 title = "Check against the withdrawn 2013 edition (centre line) for older projects"