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Build 12 — Commissioning & Verification

Measure, fix, re-test, sign off · click any drawing to zoom · acoustics5

What you need

1
UMIK-1 mic + REW (free) + stand · —
Qty: 1
RT60 measurement
2
Class-2 SLM + anemometer · —
Qty: 1
NC at design airflow
3
Field STC test kit (or 3rd-party lab) · —
Qty: optional
ASTM E336

Build sequence

room (plan)sourceUMIK-1 micRT60: source 1/4, mic 3/4, REW sweep1

1 Measure RT60 (per room)

Sweep each room with UMIK-1 + REW; source at 1/4, mic at 3/4. Compare per octave band to target (report Sabine + Eyring).

room (plan)sourceUMIK-1 micRT60: source 1/4, mic 3/4, REW sweepSLM @ grille (NC, design airflow)2

2 Measure NC at design airflow

With HVAC at design airflow, measure octave-band SPL at each grille with a Class-2 SLM; rate vs NC target (VO NC-12 etc.).

room (plan)sourceUMIK-1 micRT60: source 1/4, mic 3/4, REW sweepSLM @ grille (NC, design airflow)STC field test across partitions (ASTM E336)3

3 Field STC test

Test isolation across the partitions + doors/window (ASTM E336) — confirm field STC meets the balanced-partition targets.

room (plan)sourceUMIK-1 micRT60: source 1/4, mic 3/4, REW sweepSLM @ grille (NC, design airflow)STC field test across partitions (ASTM E336)4

4 Punch list & sign-off

Log results, fix any fails (e.g., add Studio LF trapping, reseal a door), re-test, and sign off when all rooms pass RT60 + NC.

Golden rule: Don't sign off on paper — measure. RT60 (Sabine+Eyring) + NC at design airflow + field STC, room by room. Be ready to add LF trapping (Studio) or reseal an opening, then re-test.