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feat(specs): add whole-house water system and cellar datacenter specifications with cross-document coordination updates

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Jürgen Kunz
2026-03-15 11:13:40 +00:00
parent 8f7547f4ae
commit e986401862
7 changed files with 1058 additions and 16 deletions
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specs/04-flooring-ceiling-spec.md
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@@ -48,6 +48,10 @@ flowchart TD
**Baufritz structural floor-to-floor height must be ≥ 3000 mm**, preferably 3100-3200 mm, to guarantee ≥ 2500 mm usable room height on all floors after both Lindner systems are installed. This must be specified at the initial design stage — it cannot be changed after prefabrication begins.
**Note**: The 316L stainless steel water supply pipes (28 mm OD + 13 mm insulation = ~54 mm total) fit within the existing 300 mm ceiling void allocation alongside MVHR trunk and Plafotherm pipes. No change to the room height budget is required. See 05-water-system-spec Section 6.2.
**Note**: The Lindner raised floor and Plafotherm ceiling systems apply to the ground floor and upper floor only. The cellar/basement is reinforced concrete with direct floor finish — no raised floor or radiant ceiling in the datacenter (see 06-datacenter-spec Section 2).
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## 3. Raised Floor — Lindner NORTEC Doppelboden
@@ -246,7 +250,12 @@ The ground floor raised floor cavity (200 mm) accommodates:
- **KNX bus cable** to all room zones
- **Cat6a shielded data** to all rooms
- **Electrical wiring** (standard NYM cable)
- **Plumbing** (where floor-level connections are needed)
- **Drain/waste pipes** (PP push-fit, 40-110 mm — gravity-dependent, see 05-water-system-spec Section 7)
- **Plumbing connections** (where floor-level fixture connections are needed)
**Note**: Water supply pipes (hot + cold) run in the **ceiling void**, not the floor cavity. They are routed alongside the MVHR trunk and Plafotherm pipes, accessible by removing ceiling panels. See 05-water-system-spec Section 6.
**Note**: Fiber backbone (12-core OS2 single-mode) and Cat6a structured cabling risers from the cellar datacenter enter the ground floor through dedicated cable risers and distribute through the Doppelboden cavity. See 06-datacenter-spec Section 6.2.
**Constraints**:
- Ducts must be rigid steel/aluminum — no semi-rigid flex except final 0.5 m