LOCKED SCOPE DOCUMENT
v01
2026-03-04
PHASE 1
Project: TechTown Acoustics 2.0 — MediaVerse Studio Complex, B3 Damascus
1. Project Identity
| Project | MediaVerse Acoustic Studio Complex |
|---|
| Location | TechTown Damascus, Basement Level 3 (B3) |
|---|
| Zone | Yellow-highlighted area — Northwest corner of B3 |
|---|
| Version | 2.0 (fresh start — v1.0 abandoned due to cross-LLM context loss) |
|---|
| Designer | Threefold Studio (architecture) + Obai (acoustic engineering) |
|---|
| Acoustic Engineer | Claude Opus 4.6 (computational) under Obai's direction |
|---|
| Design Standard | Conservative / Broadcast-grade (highest tier) |
|---|
2. Scope Boundary — CRITICAL
ONLY the yellow-highlighted zone in B3.png. NOT the full northwest trapezoid (~92 m² from Grok Session 2). NOT the 13-zone full floor analysis (Claude Web).
| Outer boundary area | ~29–35 m² (independent calculation pending DXF polygon verification) |
|---|
| Usable interior (after construction) | ~24–28 m² estimated |
|---|
| Ceiling height | 290 cm (floor to T-bar grid) |
|---|
| Effective height (after treatment) | ~260 cm (floating floor -15cm, ceiling -15cm) |
|---|
| Volume (outer) | ~84–101 m³ |
|---|
| Volume (usable) | ~62–73 m³ |
|---|
Area discrepancy exists between sources: 26.75 m² (Claude Web) / ~29 m² (our calc) / ~33 m² (ChatGPT) / 37 m² (scope brief) / 39.5 m² (Grok). Our independent calculation from B3.png gives ~29.1 m² interior trapezoid. Differences likely due to wall thickness inclusion, boundary interpretation, and measurement reference points. This will be resolved in Phase 1 Geometry Report.
3. Room Program — 4 Separate Spaces
4 SEPARATE rooms. Live Room and Video/Podcast Studio are NOT combined/convertible. This was explicitly corrected by the user during Grok Session 2.
| Room | Function | NC Target | RT60 Target | STC Target | Priority |
|---|
| Voice-Over / Live Room | VO recording, voiceover, instrument tracking | NC-15 | 0.2–0.3s | STC-60+ | CRITICAL |
| Control Room | Mixing, monitoring, session control | NC-20 | 0.3–0.4s | STC-55+ | CRITICAL |
| Video / Podcast Studio | Green screen shoots, podcast recording (2-3 people) | NC-20 | 0.3–0.5s | STC-50+ | HIGH |
| Editing Area | 4 workstations, headphone-only monitoring | NC-30 | 0.4–0.6s | STC-40+ | MODERATE |
| Sound Lock / Vestibule | Double-door entry from south corridor | NC-35 | N/A | STC-45+ | HIGH |
Sight Line Requirements
| Relationship | Requirement |
|---|
| Control Room → Live Room | MUST have direct visual sight line (observation window) |
| Control Room → Video/Podcast Studio | NICE-TO-HAVE — secondary window or CCTV acceptable |
4. Physical Constraints
Structural
| Element | Detail |
|---|
| Foundation columns | 2 non-removable columns within the zone:
COL-1: 60 × 50 cm (center of zone at column row)
COL-2: ~55 × 50 cm (near east wall, same row) |
| Column row position | 111 cm from south wall, 270 cm from north wall |
| Internal partitions | ALL demolished — full demolition confirmed |
Wall Types & Isolation
| Wall | Type | Inherent STC | Threat Level | Notes |
|---|
| North | Concrete (exterior) | STC-55+ | LOW | Free mass — minimal additional treatment |
| East | Gypsum (10 cm) to Server Room B313 | STC-25–30 | CRITICAL | Highest isolation priority. Server noise 55-65 dB(A) assumed worst-case |
| West/NW | Slanted concrete (exterior facade) | STC-55+ | MEDIUM | Free mass, BUT VR Lab vibration risk from adjacent space |
| South | Internal partition (to be rebuilt) | TBD | HIGH | Entry side — sound lock required |
Construction Constraints (Syria-specific)
- Slab-to-slab NOT feasible — Use decoupled top seals (rockwool + acoustic caulk)
- Local material priority — But no budget cap; design best, then cost it
- Import alternatives documented — For every local solution
5. HVAC System
| System | Samsung DVM VRF (Variable Refrigerant Flow) — CANNOT be changed |
|---|
| Indoor units | AVD (ducted), AVBC (cassette), AUD (AHU) |
|---|
| Duct sizes (existing) | 150×100 mm through 500×250 mm rectangular; 150Ø–350Ø round |
|---|
| Known risk | 150×100 mm ducts may generate excessive velocity noise (regenerated noise) |
|---|
| Mitigation | Silencer schedule required; potential duct upsizing; flex connections; lined plenums |
|---|
Key HVAC DXF layers: Duct, MECH-Supply Duct, MECH-RETURN DUCT, MECH-EXHAUST DUCT, MECH-Indoor unit, VI-AIR DEVICES, FLEXIBLE-DUCT
6. Acoustic Construction Specifications
| Element | Specification | Applies To |
|---|
| Room-within-a-room (box-in-box) | Full decoupled shell construction | VO / Live Room (mandatory) |
| Floating floor | Neoprene pads, f0 < 20 Hz target | VO / Live Room (mandatory) |
| Decoupled ceiling | Resilient hangers / spring isolators | VO / Live Room (mandatory) |
| Mass-Air-Mass walls | Double leaf with air gap, resonance below 50 Hz | All studio walls |
| Observation windows | Triple-pane, angled 5°, different thicknesses | Control Room walls |
| Acoustic doors | STC-50+ rated, gasket sealed | All room entries |
| Green screen | Motorized retractable (NOT permanent cyclorama) | Video/Podcast Studio |
7. Assumptions (Worst-Case)
| Parameter | Assumed Value | Rationale |
|---|
| Server room noise (B313) | 55–65 dB(A) | No measured data available — assume worst-case rack servers |
| Facade glazing | Single-pane float glass (worst STC) | Glazing type unknown |
| Adjacent VR Lab vibration | Present — structure-borne | VR Lab west of the angled wall may generate low-frequency vibration |
| HVAC background noise | Per Samsung DVM specs + regenerated noise calc | Need to verify duct velocities for NC contribution |
8. Deliverables Checklist
| # | Deliverable | Format | Status |
|---|
| D1 | Full acoustic engineering calculations (RT60, NC, STC, modal analysis, Schroeder freq) | HTML + PDF | Pending |
| D2 | Contractor-ready DXF drawings with layer structure | DXF | Pending |
| D3 | Material BOM with local Syrian sources + import alternatives | HTML + CSV | Pending |
| D4 | Interactive HTML review tool (layer toggles, specs) | HTML | Pending |
| D5 | HVAC noise mitigation plan with silencer schedule | HTML + DXF | Pending |
| D6 | Installation sequence / phasing document for contractor | HTML | Pending |
| D7 | Construction how-to guides: doors, windows, ceiling, walls, floors — per area, with charts and drawn multi-step instructions | HTML + SVG/PNG | Pending |
9. Support Features
| Feature | Status | Notes |
|---|
| South entrance sound lock / vestibule | CONFIRMED | In agreed facts — double-door airlock entry |
| Buffer spine / service corridor | NOT SELECTED | User did not check this option. May revisit during layout phase if space permits. |
10. Occupancy & Operations
| Parameter | Value |
|---|
| Simultaneous occupancy | 4–6 people (2–3 editing + 2–3 in studio/control) |
| Editing stations | 4 workstations, headphones exclusively |
| Green screen type | Motorized retractable |
| Camera throw (video studio) | ~4.5 m depth target |
11. Standards & References
- EBU R22 — European Broadcasting Union studio design
- WELL v2 — Acoustic comfort criteria
- ASHRAE Chapter 48 — Sound and vibration control in HVAC
- ISO 3382-3 — Open plan office acoustics (for editing area)
- IEC 60268-13 — Listening room acoustics
- NC Curves — Beranek noise criteria
- Sabine & Eyring equations — RT60 calculations
12. Sign-Off