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The industry's comprehensive Specification for the manufacture and installation of sheet metal ductwork
DW/144 is the Standard Specification for ductwork manufacture and installation and is aligned to all current BS, BS EN ISO and other standards and regulations. It defines specifications for sheet metal ductwork for low, medium and high pressure/velocity air systems and covers ductwork application, materials, classification and air leakage. It highlights the technical information to be provided by system designers to ductwork contractors and looks in detail at rectangular, circular, and flat oval ductwork. It also contains updated information on hangers and supports, smoke and fire dampers, external ductwork, internal duct linings, thermal insulation, air terminal units, with many clear reference tables.
Hi, I am planning to purchase a digital copy, is it printable?
Posted by: Kin Wai CHAN at 2/28/2019 9:35:39 AMShow Replies (1) Hide Replies
There are no printing restrictions on the pdf so you are free to print as many copies as you wish for your company. However, please be mindful of the copyright laws if you distribute the publication externally.
Mark Oakes at 2/28/2019 10:12:12 AM
Hi is there any guide lines on what a self-employed ductwork pair should be on p/h
Posted by: Ross Cruickshank at 4/26/2019 7:45:12 PMShow Replies (1) Hide Replies
Unfortunately, we do not negotiate on behalf of, or publish pay rates, for self-employed individuals. However, if you wish to know the hourly rates that we publish for directly employed individuals, then the latest of these are contained in JCC Letter 120 available on the BESA website https://www.thebesa.com/media/3225/jcc-letter-120-2018-2020-na-operative-wage-settlement-020718.pdf .
Mark Oakes at 4/29/2019 9:14:18 AM
Section 7.5 states that there is a "minimum are to be tested" based on the size of the test rig, is there any clarification on this or is it generally to the test rigs manufacturers guidelines?
Posted by: Joshua Sullivan at 7/18/2019 2:58:45 PMShow Replies (1) Hide Replies
Section 7.5 of DW/143 Ductwork Air leakage Testing refers to the area of ductwork that can be tested depending on the type of test rig used and the guidelines of the test rig manufacturer.
Mark Oakes at 7/19/2019 1:48:29 PM
Comparing the contents on 2016 edition to the 2013, the headings and even the page numbers are exactly the same, can you provide a list of changes in point form ? Or highlights ? Further, how often will BESA intend to update this standard, it may seem ludicrous in doing so, but it does cost contractors a fortune.
Posted by: Sunny Chien at 9/6/2020 11:35:13 AM
Hi, I just purchased a digital copy of this book, but I cannot access it after I downloaded on my laptop. Can anyone help me with this? Cheers.
Posted by: Cici Zhu at 11/28/2020 8:16:15 AM
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