SSOT v3.7 · Contractor Detail Drawing · Acoustic Design Basis

Observation Window OW-1 Installation Detail

Triple-pane observation window in the W6 partition between Control Room and VO Live. This detail shows the 170 mm steel frame, 5° tilt, sill level, and staged glazing installation sequence.

Opening
80 × 50 cm
Rating
STC 50
Frame Depth
170 mm
Tilt
5° [AC]

Drawing 1 — Horizontal Cross-Section

Frame depth 170 mm

Horizontal cut through the W6 partition and observation frame. Three 6 mm panes are separated by two 50 mm air gaps with differing pane positions to avoid parallel reflective paths.

170 mm frame depth Triple-pane glazing set within powder-coated steel frame 6 mm glass 6 mm glass 6 mm glass 50 mm air gap 1 50 mm air gap 2 Neoprene seal to wall [AC] W6 partition build-up shown schematically

Drawing 2 — Vertical Cross-Section

Sill 100 cm AFF · 5° tilt

Vertical section through the OW-1 opening showing sill level, frame embedment into W6, and the 5° glazing tilt required to avoid flutter reflections between rooms.

5° tilt 50 cm window height 100 cm AFF sill Powder-coated steel frame rebated into W6 Observation line preserved through tilt Finished floor level

Drawing 3 — Installation Sequence

7-step site sequence

Install the frame first, then stage panes and seals from the larger air-gap side to the smaller air-gap side. Maintain clean seals at every interface.

1. Form opening 2. Set steel frame 3. Shim + plumb 4. Insert pane 1 5. Insert pane 2 6. Insert pane 3 7. Seal + test [AC] seal all sides
StepAction
1Form the W6 opening and verify sill elevation at 100 cm AFF.
2Set the powder-coated steel frame and rebated reveal.
3Shim frame plumb, lock to studs, and apply neoprene isolation strip.
4Install first 6 mm pane with primary spacer.
5Install second pane with 50 mm air gap and staggered depth.
6Install third pane and final compression beads.
7Seal frame-to-wall perimeter and inspect sightline / tilt before handover [AC].