Noise - Acoustic - Selecting an Acoustic System

Noise - Acoustic - Sealing Systems

Selecting an Acoustic System

Make the right selection

This selection guide is to aid architects, engineers and builders in making the right choice of door and Raven sealing system to suit the room. The selection of the Rw rating of the door sealing system is based on achieving the design sound level (LAeq) in the room as recommended in AS/NZS 2107:2016.

Select the TYPE OF ROOM OF OCCUPANCY from the table below.

Find at the top of the table, the level of either:

EXTERNAL NOISE, OR

ADJACENT ROOM

Both of these criteria will then find the required Rw rating for the door sealing system.

Select a sealing system with the same or next highest Rw rating.

1. TYPE OF ROOM OF OCCUPANCY	2a. EXTERNAL NOISE
	40 - 50 dBA e.g. Quiet residential area with distant traffic noise / rainfall / creeks	50 - 60 dBA e.g. Urban area with traffic noise / distant train noise / quiet restaurants	60 - 70 dBA e.g. Urban area with significant traffic noise / retail activity / busy restaurants / industrial noise
	2b. ADJACENT ROOM
	40 - 50 dBA Transient e.g. Corridors	50 - 60 dBA Occupied e.g. Offices / Classrooms	60 - 70 dBA Occupied / Unoccupied e.g. Music / Factories
	3. REQUIRED Rw RATING OF DOOR SEALING SYSTEM
Carparks Control rooms Factories	Rw22	Rw25	Rw28
Bars and lounges Corridors and lobbies Food courts Service areas / utility rooms Shopping malls / supermarkets Stores	Rw25	Rw28	Rw30
Airports Apartments¹ Art studios Boarding house rooms¹ Cafés Guest house rooms¹ Gyms Hotel rooms / motel rooms¹ Intensive care wards Laboratories Libraries Computer rooms Living areas¹ Meeting rooms Offices Recovery rooms	Rw30	Rw30	Rw35
Auditoriums Bedrooms / sleeping areas¹ Board rooms Cinemas / home theatres Classrooms Consulting rooms Convention centres Court rooms Delivery suites Drama studios Executive offices Places of worship Procedure rooms	Rw30	Rw35	Rw40
Drama studios² Film or television studios² Music practice / studio rooms² Music recording studios² Sound stages² Voice over booth²	Rw35+	Rw40	Rw43 - 45

¹ To be used with this guide for external door sealing solutions only. Refer NCC Part F5.5 (b).

² Rating of acoustic door to be acoustically designed by a suitably qualified acoustic engineer.

It must be noted that this table does not calculate the end design sound level (LAeq,t), but only the minimum required Rw rating of a door set.

It must also be noted that this table is a guide only and is not to take precedence over local building codes or standards. Consultation with an acoustic engineer should be considered when specifying solutions for noise problems.

Glossary

LAeq

LAeq is the A-weighted equivalent continuous sound level in decibels measured over a stated period of time

Decibels are a unit used to measure the intensity of a sound by comparing it with a given level on a logarithmic scale.

dBA

A-weighted decibels are an expression of the relative loudness of sounds in air as perceived by the human ear.

The Rw is a single number quantity in decibels of an assembly’s ability to resist airborne sound transfer at the frequencies of 100Hz to 3150Hz. The higher the Rw rating the more sound energy is stopped by the Raven sealed door set.

DOOR FRAME / PERIMETER SEALDOOR BOTTOM SEALASTRAGALTHRESHOLD PLATE SEALTHRESHOLD PLATE