8/9/2019 Acoustic Doors Type Dac 40 Dac 33

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NOISE CONTROLProduct Data Sheet No. 109/03

EMTEC DAC 40 and DAC 33 Acoustic Doors are suppliedcomplete with their own mounting frames and xings for tting into prepared structural openings. Single and doubleleaf doors are available with the main door leaf opening either

to the right or left as required.Typical applications of the EMTEC DAC range of acousticdoors are to permit access into such areas as Turbine or Diesel Engine Test Cells, Generator Plantrooms, Ventilation or

Air Conditioning Plantrooms, Plenum Chambers, IndustrialProcess Control Rooms, Quiet Havens, Audiometric Facilitiesand Recording Studios.

Almost any size of EMTEC Acoustic Door can be manufacturedto meet customers individual requirements and stable door arrangements with small personnel access doors within larger machine entrance doors can be designed. It is recommendedthat for your particular application you consult an EMTECengineer who will be pleased to assist you in the detailedlayout of an Emtec DAC door to meet your exact physicalrequirements.

ConstructionThe EMTEC DAC range of Acoustic Doors are manufacturedfrom high quality galvanised steel sheets spot welded together to form a sandwich construction of considerable strength.Held between the two skins of the door is an inert, non-ammable, acoustic media which effectively absorbs primary and secondary acoustic energy incident on the doors inner surface and provides acoustic damping of the inner and outer skins of the door. The structural integrity of the door and themounting frame is essential to ensure efcient compression of the peripheral edge seals. The mounting frames provided

with each door are of all welded construction and furnishedcomplete with anchor xings or bolts to allow for mountinginto existing structural openings (see details of alternativeframes on the reverse side of this data sheet).

Each EMTEC DAC Acoustic Door is furnished with heavy duty hinges, a positive pressure external latch and a quick releasemechanism allowing personnel to exit from the enclosedspace even when the door has been locked shut.

Inspection windows can be provided if necessary and EMTECDAC Acoustic Doors are normally supplied with a polyester powder coat nish to any standard, non-metallic, BS4800 or RAL colour.

Typical SpecicationThe double and single leaf access doors into the Engine Test

Area shall be EMTEC Type DAC Acoustic Doors having anaverage sound reduction index of 39dB across the audiblefrequency spectrum. The doors shall be supplied with a ushbottom cill in order to allow access into the test area by fork lift trucks. An angle frame with anchor xings shall beprovided to allow tting into the prepared structuralopenings. The doors and framework shall be carefully locatedinto the structure ensuring that the complete assembly isplumb and square prior to nal grouting into position. Eachdoor leaf shall be provided with an inspection window andthe complete assembly shall be polyester powder coated tocolour RAL 7019.

UsageEMTEC DAC 40 and DAC 33 Acoustic Doors are doubleskinned metal doors specically designed to provideoptimum noise reduction combined with ease of operation.The DAC 40 Acoustic Door has a nominal thickness of 100mm, is tted with twin peripheral edge seals, and gives anaverage noise reduction of 39dB across the audible frequency spectrum. The DAC 33 Acoustic Door has a nominal thicknessof 50mm, is tted with a single peripheral edge seal, and givesan average noise reduction of 33dB.

Acoustic Doors type DAC 40 & DAC 33

Outside of EMTEC DAC33 Single Leaf Acoustic Door.

EMTEC PAC40 Double and Single Leaf Acoustic Doors.

Acoustic Doors Type DAC 40 & DAC 33

Usage

Typical Specication

Construction

Specialist Engineers in Noise Control and Vibration Control,Architectural Louvre Systems and Plantroom Walls

8/9/2019 Acoustic Doors Type Dac 40 Dac 33

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EMTEC DAC 40 and DAC 33 Acoustic Doors can be furnished with many optional variations to suit theindividual requirements of particular installations. Besides the provision of inspection windows whenrequired and the choice of surface nish, the table below shows the full range of options available

when choosing your EMTEC DAC Acoustic Door.

The options required should be clearly stated at the time of enquiry but will be nally conrmed by EMTEC Products Ltd. on a detailed design drawing issued for every door prior to manufacture.Customer approval of this drawing is obtained prior to manufacture to ensure compatibility of the naldesign requirements.

EMTEC DAC 40 Acoustic Doors weigh approximately 70kg/m 2 and DAC 33 Acoustic Doors weighapproximately 40kg/m 2 .

It is imperative that the framework of all EMTEC DAC Acoustic Doors be plumb and square prior tonal xing as any inaccuracies in the positioning of the frame may compromise the nal acoustic

performance that is achieved.

AcousticPerformance

PhysicalProperties

DOORFRAME

OPTIONS

FIXINGOPTIONS

BOTTOMCILL

OPTIONS

DOOR OPENINGOPTIONS

ANGLE FRAME CHANNEL FRAME BOX SECTION FRAME

BOLT FIXING ANCHOR FIXING ACOUSTIC PANEL FIXING

CHANNEL AND SCREWPLATE ANDCURTAIN SEALS CURTAIN SEALS

SINGLE LEAF DOUBLE LEAFL.H. OPENING R.H. OPENING L.H. OPENING R.H. OPENING

DETAILS AS PERDOOR FRAME OPTION

Acoustic Door Type Sound Reduction Index in dBat Octave band centre frequencies (Hz)

63 125 250 500 1k 2k 4k 8k DAC 40 23 25 34 39 44 48 50 49DAC 33 20 22 29 34 40 38 44 38

Emtec Products Ltd,Enterprise House,Blyth Road, Hayes,Middlesex, UB3 1DD

T: 020 8848 3031F: 020 8573 3605E: sales@emtecproducts.co.ukwww.emtecproducts.co.uk

Data sheets are issued in all good faith and the information given iscurrent at the time of printing. However, EMTEC reserves the right toalter, amend or withdraw products as and when necessary. All rightsto the products described in this data sheet are reserved to EMTEC.

AcousticPerformance

PhysicalProperties