Post on 04-Jul-2020
CONSTRUCTION
MATERIAL SPECIFICATION
FABRICATION
JOB REFERENCE
APPENDICES
APPENDIX A. TEST REPORT ON RECTANGULAR AIR DUCT CROSS JOINT C/W ROLLFORMED SHEET STIFFENER FOR J2, J3, J4, J5 & J6
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3
4
5
7
Clamp
Alternative sealant locations
DuctFlange Profile
Gasket
-120
-130
-140
Flange Corner J2 J3 J4 J5 J6
-20
-30
-40
S3/4 S5Rating
Provides for rapid assembly of cross joints
Available in standard metric sizes of 20mm,30mm and 40 mm
Fully conforms to specification DW/144
Choice for material types and gauges to suitspecifications and requirements
Tested and certified by Ir HN Lam of the University of Hong Kong in accordance with the HVAC test procedures DW/TM1
Suitable for Joints & Stiffeners Rating up to J6/S6 and pressure classes A, B and C
Full range of accessories to suit all sizes of flanges
-130S
-140S
-30
-40
-120S -20
S2 S6
-120/120S
-130/130S
-140/140S
-20 2.5 0.05
-30 2.8 0.09
-40 3.5 0.174
-120/120S 100m
-130/130S 100m
-140/140S 50m
-20 in boxes of 200
-30 in boxes of 200
-40 in boxes of 100
LM
LM
LM
"Am Tape" gasket tape is an excellent air-tight gasket for use in air-duct systems. It is made of fire-retarded nitril rubber foam. With its 100% closed cell, elastic and highly flexible properties. Service
O Otemperature range -40 C to +85 C. We recommend the use of the appropriate gasket to ensure performance in accordance with DW/TM1 test results.
-20
-30
-40
-120 0.7 0.475/m
-130 0.8 0.73/m
-140 1.0 1.12/m
-130S 1.0 0.94/m
-140S 1.2 1.32/m
-120S 0.8 0.54/m
LM
11
71
02
89
11
9
13
DUCT
DUCTNose (facing away from Duct)
Duct
Spot weld,rivet or clinch
Duct
applied this area
Inside of Duct
Directionof Cut
Cut two lengths of profile to suit the duct width less 28 (W),and two lengths to suit
the duct height less 28 (H). Note: outside dimensions of the duct are to be used,
not internal.
For best results use a circular cut off saw with pneumatic vice. If any burring has
occurred during the cutting of the flange, this must be removed before assembly.
Insert four corners into the flange form a rectangle
frame as shown. Care must be taken to ensure the
legs of the corners are fully inserted into the flange,
the 'nose' on the corner faces away from the duct
on which the frame is to be fitted. To comply with
DW/144 corner pieces should be fixed into the
flange. This can be done with a press tool.the
cutting of the flange, this must be removed before
assembly.
The frame is now ready to be fitted to the duct. Starting in one corner, the frame
should be firmly tapped home by working away from this corner. On larger ducts a
straight edge can be used to ensure the frame is on 'flat'.
The frame can be attached to the duct by various methods, spot welding ,rivet or
clinch. Spacing for fastenings to be as DW/144 table 5. A fixing at a maximum of
50 mm from each comer is recommended, this will give additional strength during
the installation.
Any burrs caused during the drilling for fixings should be removed from all
surfaces before finally fixing the frame to the duct. Sealant should be applied if
any method of fixing pierces the duct..
When the frame is securely fixed, a fillet of mastic needs to be run along the cut
end of the flange on the inside of the duct.
Sealant must be
w H
Building E-F, Tiantou Industrial Area, Pingshan Street, PingshanNew District, Shenzhen City, Guandong Province, P.R.China.TEL: (86-755) 8993 7642 (852) 8302 4988FAX: (86-755) 8993 7775 (86-755) 8993 7286E-MAIL: info@luenming.comWEBSITE: www.luenming.com
11/F, Gemmy Factory Building, 12 Hung To Road, Kwun Tong, Kowloon, HongKong.TEL: (852) 2797 2168 FAX:(852) 2790 1254E-MAIL: info@luenming.comWEBSITE: www.luenming.com
ITEM PROJECT CONSULTANT
1
Yuen Long Theatre ASD
2 / ( ) Dragonair/CNAC (Group) Building JRP
3 Metro City Phase III Meinhardt
4 Cheung Sha Wan Government Offices ASD
5 KIL 1107 Olympic Station Development Site C PBA
6MTR Hang Hau Station Meinhardt
7MTR Tiu King Leng Station PBA
8 Lai King Hosiptal ASD
9 Proposed St' Teresa's Hospital Extension at Lomond Road ACE
10 5 Redevelopment of Yau Tong Estate Phase 5 Housing
Authority
11 Customhouse in Container Port Road South, Kwai Chung ASD
12
Kowloon Station Phase 2 W&O 13
Victoria Towers Meinhardt
Job Reference
ITEM PROJECT CONSULTANT
Millennium City 3 SHKE
The Metropolis Residence PBA
Horizon Suite Hotel OAP
Cyberport Development Contract C3/C4 OAP
Langham Place W&O
- Hong Kong Disneyland - Tomorrowland OAP
- Hong Kong Disneyland - Fantasyland Meinhardt
EMSD Headquarters Building ASD
Hong Kong - Four Season Hotel JRP
Wetland Park ASD
The Harbourfront Horizon and Harbourview Horizon W&O
MTR Tseung Kwan O Station PBA
Job Reference
Building E-F, Tiantou Industrial Area, Pingshan Street, PingshanNew District, Shenzhen City, Guandong Province, P.R.China.TEL: (86-755) 8993 7642 (852) 8302 4988FAX: (86-755) 8993 7775 (86-755) 8993 7286E-MAIL: info@luenming.comWEBSITE: www.luenming.com
11/F, Gemmy Factory Building, 12 Hung To Road, Kwun Tong, Kowloon, HongKong.TEL: (852) 2797 2168 FAX:(852) 2790 1254E-MAIL: info@luenming.comWEBSITE: www.luenming.com
TEST REPORT ON RECTANGULAR AIR DUCT CROSS JOINT
C/W
ROLLFORMED SHEET METAL STIFFENER
FOR
J2, J3, J4, J5 & J6