Installation Sequence

Site Preparation & Set-Out (empty shell — NOTHING TO DEMOLISH)

Steps

1. Survey existing basement space — confirm slab-to-slab height is 366.4 cm
2. Mark zone boundaries on slab: south wall 737 cm, north wall 860 cm, east wall 431 cm, NW diagonal 448 cm
3. Locate and mark columns: COL_W at (369.1, 140.6) and COL_E at (762.1, 138.1)
4. Protect + isolate structural columns COL-W and COL-E (BOQ SP-01) — never remove
5. Survey + protect the EXISTING high-level MEP corridor along the west/north edge — insulated duct, spiral ducts, cable trays, live cabling, smoke detection (BOQ SP-02, S3-SITE-TRUTH §4); coordinate with plenum/silencer routing BEFORE any ceiling work; keep live services live
6. Clear loose site materials/debris (BOQ SP-03) — clean slab surface, level any high spots exceeding 5mm
7. Verify structural slab can support float floor dead load (approx 45 kg/m²)

QC Checklist

• Slab-to-slab height confirmed at 366.4 cm (±5mm)
• Zone perimeter dimensions match SSOT within ±25mm
• Column positions confirmed within ±15mm of SSOT coordinates
• Slab surface clean and level

MEP First Fix (Conduit, Duct Sleeves)

Steps

1. Install sub-panel location: 240V/50Hz, 32A main breaker, TN-S earthing, star topology
2. Route conduit runs for 5 circuits: AV-01 (Control, 16A/480W IG), AV-02 (VO Live, 16A/385W IG), AV-03 (Video/Podcast AV only, 16A/660W IG) + LX-1/LX-2 (production lighting, 2×16A RCBO — lighting NEVER shares AV-03)
3. Install duct sleeves through future wall positions — oversized by 25mm all around for acoustic isolation
4. Route Cat6A S/FTP data conduit (25mm EMT) — maintain 300 mm separation from power runs
5. Install green screen power outlet conduit at 265 cm AFF on Video/Podcast east wall [AC]

QC Checklist

• All conduit runs installed per drawing
• Duct sleeves oversized by 25mm minimum
• Power/data separation ≥300 mm maintained
• Green screen outlet at exactly 265 cm AFF
• Floor box positions match SSOT workstation coordinates

Float Floor Construction

Steps

1. Lay Sylomer SR28 isolation pads on clean slab — grid pattern per manufacturer spec, minimum 25% coverage
2. Install first layer of 18 mm T&G plywood over Sylomer pads — stagger joints
3. Install second layer of 18 mm T&G plywood perpendicular to first layer — glue and screw
4. Maintain 10 mm perimeter gap around ALL edges [AC]
5. Do NOT allow float floor to touch any wall, column, or fixed structure
6. Install backing rod into 10 mm perimeter gap
7. Apply Tremco acoustic sealant over backing rod [AC]

Column Isolation

At COL_W (60×50 cm) and COL_E (60×55 cm): float floor must maintain 10 mm air gap from column faces on all sides. Use backing rod + Tremco to seal gap. [AC]

QC Checklist

• Sylomer pads correctly placed, no gaps in grid
• Two layers of 18 mm plywood installed, joints staggered
• 10 mm perimeter gap continuous — no bridging anywhere
• Column air gaps maintained at both COL_W and COL_E
• Backing rod + Tremco sealant applied to all gaps
• Floor level within ±2 mm across zone
• Total buildup = 15 cm, ceiling AFF = 275 cm

Wall Framing & Decoupling

Wall Schedule

Steps

1. Install floor tracks on float floor — use acoustic isolation strip under all tracks
2. Frame buffer spine (W5) first: west face at X=213.6 cm, east face at X=228.6 cm [AC]
3. Frame perimeter walls W1–W4 with RSIC clips where specified
4. Frame interior partition W6 (VO/Control)
5. At COL_W: maintain 10 mm air gap between all framing and column faces [AC]
6. Verify Control Room south wall width = 213.6 cm [AC]
7. Verify Video/Podcast width = 479 cm [AC]

QC Checklist

• All wall positions match SSOT dimensions
• Buffer spine at correct X coordinates
• RSIC clips installed per manufacturer spec on W1, W2
• Isolation strip under all floor tracks
• COL_W 10 mm air gap confirmed
• Control south = 213.6 cm, Video/Podcast width = 479 cm
• All studs plumb and level

Cavity Insulation & Green Glue Application

Steps

1. Install Rockwool insulation in all wall cavities — friction fit, no gaps, no compression
2. W1: 50 mm Rockwool in RSIC cavity
3. W3: decoupled stud lining — 70mm steel studs with RW70; 100mm air gap to server room (per SSOT W3 assembly)
4. W4: 100 mm Rockwool between studs
5. W5 (buffer spine): 100 mm Rockwool between studs
6. Apply Green Glue between gypsum layers on W3, W4, and W5 — 2 tubes per 1200×2400 sheet [AC]
7. Install first layer of gypsum on all walls
8. Apply Green Glue to first layer, install second layer
9. Tape and finish all joints

Green Glue Application Guide

QC Checklist

• All cavities fully insulated — no gaps visible
• Green Glue applied at correct coverage (2 tubes/sheet)
• Gypsum layers installed with staggered joints
• All joints taped and finished

HVAC Rough-In & Above-Ceiling Pulls

IDU Installation

System: Daikin VRF (NOT Samsung). ODU: 1× outdoor unit, south side.

Silencer Schedule — 4 Runs

Steps

1. Mount IDU-04, IDU-03, IDU-05 on north wall at specified positions
2. Install silencer Run A (1500 mm) in VO Live ceiling plenum [AC]
3. Install Run B (1000 mm) routing through buffer spine to Control branch [AC]
4. Install branch silencer B1 (500 mm) to Control Room
5. Install silencer Run C (1000 mm) in Video/Podcast ceiling plenum
6. Use flex connectors at all IDU-to-duct and duct-to-silencer connections [AC]
7. Install 6 fresh air terminals (2 per room) in ceiling plenum
8. Seal all duct penetrations through walls with acoustic sealant

QC Checklist

• 3 IDUs mounted at correct positions
• All 5 silencer runs (A, B, B1, B2, C) installed (A, B, B1, C) — lengths verified
• Flex connectors at all mechanical joints
• 6 fresh air terminals installed (2 per room)
• All duct penetrations sealed
• No rigid duct-to-structure connections

Plenum Barriers & Ceiling Systems

Ceiling Schedule

Steps

1. Install plenum barriers above all inter-room walls to prevent sound flanking through ceiling void
2. Extend wall framing to underside of structural slab where plenum barriers are required
3. Install ceiling grid at 275 cm AFF in VO Live + Control; Video/Podcast ceiling grid at 340 cm AFF (HIGH) [AC]
4. Install ceiling tiles per room schedule above
5. Verify audio-room ceiling plenum depth = 76 cm (slab-to-slab 366.4 − ceiling 275 − floor 15 ≈ 76 cm)

QC Checklist

• Ceiling height = 275 cm AFF (VO Live + Control); 340 cm AFF (Video/Podcast, HIGH)
• Plenum barriers continuous above all partitions
• Correct ceiling tile type installed per room
• Ceiling grid level and square
• Audio-room plenum depth = 76 cm

Doors, Windows & Seals

Door Schedule

Observation Window

Steps

1. Install door frames with acoustic seals on all 4 edges (head, jambs, threshold)
2. Hang acoustic doors — verify STC rating labels match schedule
3. Install automatic door bottoms (drop seals) on all 3 doors [AC]
4. Install observation window OW-1 with 5° tilt, triple-pane glazing [AC]
5. Seal all door frame and window frame perimeters with acoustic sealant
6. Test all doors for proper closure and seal compression

QC Checklist

• All 3 doors installed with correct STC ratings
• Door seals compress on all 4 edges
• Drop seals function correctly
• Window OW-1 installed with 5° tilt
• All perimeter joints sealed
• No daylight visible around any door or window

Electrical Finishing & Data

Circuit Schedule

Total zone load: 4025W / 52% utilization across 5 circuits. Sub-panel: 240V/50Hz, 32A main, TN-S earthing, star topology, IG conductors. Production lighting is NEVER on AV-03 — LX-1/LX-2 only.

Steps

1. Install all outlets at 45 cm AFF (standard height)
2. Install green screen outlet ST-GS at 265 cm AFF on Video/Podcast east wall [AC]
3. Install Cat6A S/FTP data cabling — TIA-568B termination
4. Maintain 300 mm separation between power and data runs
5. Install patch panels and label all runs
6. Seal all electrical penetrations through acoustic walls with fire-rated acoustic sealant

QC Checklist

• All outlets at correct heights (45 cm standard, 265 cm green screen)
• Power/data separation ≥300 mm
• All penetrations sealed
• Circuit loads match schedule
• Data cables tested and certified

Acoustic Treatment & Commissioning

Panel Installation Schedule

Steps

1. Install bass traps in VO Live (3 corners, floor-to-ceiling, 150 mm Rockwool RWA45)
2. Install bass traps in Control Room (3 corners + 1 soffit trap NE corner, above D3)
3. Install DEEP superchunk bass traps in Video/Podcast (6 traps, 400–600 mm: SE + SW corners + 4 at COL_W re-entrant angles, NOT NW)
4. Build the deep perimeter bass soffit in Video/Podcast (MEP bulkhead, ≥300 mm mineral-wool fill + sealed cavity, α₁₂₅≈0.55) [AC]
5. Install absorption panels: VO Live (5), Control (3), Video/Podcast (6) [AC]
6. Install QRD diffusers: Control (2 rear wall)
7. Install manual curtain in VO Live — 450g/m² velour, ceiling C-rail
8. Install the Video/Podcast multi-colour curtain backdrop: motorised track on independent secondary-steel hung from the structural slab on neoprene isolation hangers (not off the resilient ceiling leaf; not rigid to the slab), 40 cm off wall, along the North wall (full) + East wall north-half; fit interchangeable ≥300 g/m², ≥100% fullness curtains (chroma green, white, black molton, mid-grey) + vinyl floor-sweep for the infinity curve [AC]
9. Install the in-shot area rug (≈6 m²) in Video/Podcast to break vertical floor/ceiling flutter
10. Install the isolated Unistrut lighting pipe grid in Video/Podcast on independent isolated hangers (clamp-on fixtures) — NOT fixed to the decoupled ceiling [AC]
11. Install Genelec 8030C monitors in Control Room at ±30°, listening position at 1.54 m from front wall (57% of 2.70 m clear depth)

Commissioning Tests

QC Checklist

• All 16 treatments installed (14 absorption + 2 QRD diffusers, order 16 with 10% buffer)
• All bass traps installed floor-to-ceiling; deep perimeter bass soffit built and sealed
• Video/Podcast curtain backdrop track on independent secondary-steel hung from the structural slab on neoprene isolation hangers (NOT the ceiling leaf), 40 cm off wall; curtains and floor-sweep fitted
• Isolated Unistrut lighting grid on independent hangers — not touching the decoupled ceiling
• In-shot area rug (≈6 m²) laid in Video/Podcast
• NC targets met in all rooms
• RT60 within ±10% of SSOT targets
• STC field tests within expected range (3–7 dB below lab)
• HVAC crosstalk acceptable
• Manual curtain operational (live/dead modes)