Society for Building Services Engineers

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  • 1.  Who can sign a Form 15 in QLD for Air-conditioning and Ventilation Design?

    Posted 02-04-2024 01:28 PM

    Hello everyone,

    I'm reaching out to share and seek your thoughts on an experience I've encountered here in Cairns, Queensland, that has raised some significant concerns for me regarding the practice and integrity of our engineering profession, especially in the building and construction sector.

    In several instances, I've observed building certifiers accepting Form 15 compliance certificates for the air-conditioning and ventilation design of sufficiently complex projects from individuals holding trade licences OR from Registered Professional Engineers of Queensland (RPEQ). This practice seems to acknowledge trade licence holders as being on par with RPEQs for the delivery of what I consider professional engineering services.

    One of my main concerns revolves around the possibility that commercial interests could sway the solutions offered by trade licence holders, especially when they're responsible for providing compliance certification. This situation starkly differs from that of registered engineers, who adhere to a strict code of ethics. This code demands that the needs of the community take precedence over commercial benefits. Crucially, registered engineers do not gain commercially from the solutions they provide, ensuring their recommendations are made with impartiality and integrity. This distinction is vital, as it goes to the heart of our profession's integrity and the public's trust in us. Engineers are entrusted to always put safety, sustainability, and community welfare first, driven by a stringent ethical framework. The moment commercial interests start to dim these guiding principles, the potential threat to public safety and the quality of our engineering solutions escalates significantly.

    Such practices, in my opinion, necessitate urgent scrutiny and discussion among our community. It's imperative that we address these issues to safeguard the integrity of engineering practices and ensure the prioritisation of public safety and welfare.

    I am keen to hear your views on this matter. Have you encountered similar experiences in your area? How do you think we, as a community of professionals, should respond to ensure that engineering standards are not only upheld but also clearly defined and distinguished from trade qualifications?

    Your insights and experiences would be invaluable in fostering a deeper understanding of this issue and in identifying possible steps we can take collectively to advocate for the necessary changes in regulation and practice.



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    Sonia Holzheimer
    SEQUAL Mechanical Consultants
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  • 2.  RE: Who can sign a Form 15 in QLD for Air-conditioning and Ventilation Design?

    Posted 19-07-2024 07:15 PM

    Hmm so the suggestion is to make it a requirement for form 15 compliance certificates from trade licenses holders to be vetted by Registered Professional Engineers of Queensland (RPEQ) or only submitted by RPEQ?

    From a duty of care standard point as engineers on the job, could this be intercepted in the construction stages?

    Thanks for the discussion.



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    Troy Yee
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  • 3.  RE: Who can sign a Form 15 in QLD for Air-conditioning and Ventilation Design?

    Posted 22-07-2024 09:20 AM

    Hello Troy,

    I do not believe interception at the construction stage for an engineer to 'vet' the design provided by a trade license holder (or anyone else for that matter) would work for several reasons:

    1. Timing and Coordination: The construction stage is beyond the design phase, where crucial coordination with architects, structural engineers, and other services should have already occurred. Changes arising from non-compliance with the mechanical services at this stage have the potential to significantly impact all aspects of the project.

    2. Contractual Commitments: At the construction stage, contracts will have been signed, and financial commitments made. Consequently, the mechanical contractor or trade license holder would naturally be very reluctant to change a design or any element of it.

    3. Decline in Supervision Services: Over the past few years, the uptake of construction phase supervision services by clients has decreased. This trend means fewer opportunities for identifying non-conformances during construction. My concern, however, is not just with projects involving engineers but particularly with those where an engineer has either been specifically excluded by the building certifier or where the certifier has deemed the design and certification by an engineer or a trade license holder as equivalent.

    To ensure engineering standards are upheld and clearly distinguished from trade qualifications, I believe that Form 15 compliance certificates for mechanical services (air-conditioning and ventilation) and the associated BCA/NCC energy efficiency provisions should be submitted by RPEQs for all buildings and classifications where compliance with non-prescriptive standards (such as AS1668 parts 1 and 2) is required. It is important to note that design in accordance with a non-prescriptive standard is specifically listed as an exclusive professional engineering task in the Professional Engineers Act. This approach would help maintain the integrity of our profession and the trust placed in us by the public, ensuring that safety, sustainability, and community welfare remain our top priorities.

    I look forward to hearing your thoughts on this approach.



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    Sonia Holzheimer
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  • 4.  RE: Who can sign a Form 15 in QLD for Air-conditioning and Ventilation Design?

    Posted 24-07-2024 07:39 PM

    thanks Sonia the discussion raised I forgot to mention something key is that this is with the assumption that the design stages has captured the client requirements in uniformity with compliance of the building codes but yes I do agree with ensuring safety, sustainability and community welfare. By RPEQs making the submission does that also include the option vetting the trade license holders submissions by performing proper checks?

    Thanks



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    Troy Yee
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  • 5.  RE: Who can sign a Form 15 in QLD for Air-conditioning and Ventilation Design?

    Posted 26-07-2024 01:11 PM

    Hi Sonia,

    I think a lot of it comes down to the certifiers view on competent person and a lack of understanding from some certifiers on what professional engineering services are needed to demonstrate compliance on some projects. There is a guide put out that summarizes the Queensland Building Regulations definition and requirements of a competent person:

    https://www.epw.qld.gov.au/__data/assets/pdf_file/0013/36103/guideline-for-competent-persons-17-July-2023.pdf

    Interestingly, this document does use ventilation as an example for where an RPEQ is appropriate (large and complex) and where a QBCC licenced is appropriate (simple system). The problem with these definitions is there is a large spectrum of buildings between simple and complex. This is where the certifiers decision on who is a competent person and what Professional Engineering Services are being provided needs more scrutiny on some projects as you've suggested.

    A lot of the elements that require sign off on a Form 12 relating to HVAC are from prescriptive standards and hence can be dealt with through QBCC licencing as wouldn't be a professional engineering service

     (https://bpeq.qld.gov.au/professional-engineering-services-and-prescriptive-standards/). If the Deemed To Satisfy solutions are followed to demonstrate compliance with the NCC these are prescriptive (refer to Part A2 in NCC2022 and the explanatory notes). AS1668.2-2012 notes in the forward that the standard is prescriptive and in Section 1.7 of AS1668.1:2015 the standard is noted as a prescriptive document.

    Where I think there is some discussions in competent person requirements is that there is often engineering judgement (a professional engineering service) to translate prescriptive standards into an HVAC design that gets glossed over and generally needs more discussion with some certifiers.



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    Anthony Mills
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  • 6.  RE: Who can sign a Form 15 in QLD for Air-conditioning and Ventilation Design?

    Posted 5 days ago
      |   view attached

    Hello Anthony,

    Yes, I'm familiar with the Guideline for Competent Persons and have referenced it in past discussions with building certifiers on this issue. One certifier in particular was uncomfortable with the two extreme examples used in the HVAC example-residential (simple) and multi-storey buildings for smoke hazard management (complex). He felt there was no clear demarcation for projects falling between these extremes.

    In that discussion, I suggested referencing the ventilation standards, given that they are non-prescriptive in nature and therefore constitute an engineering service. He could at least see my perspective on that point. Since then, I've been involved with the AS1668.2 standards sub-committee and am aware of recent updates aimed at making Part 2 more prescriptive. However, I maintain that As1668 parts 1 and 2 are not completely prescriptive-more to the point, as you mentioned, professional judgment is still required to interpret and apply the standard.

    The Professional Engineering Services and Prescriptive Standards practice note (attached) also provides guidance on this. I've shared it with certifiers in the past, but ultimately, as you say, it comes down to their discretion.



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    Sonia Holzheimer
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  • 7.  RE: Who can sign a Form 15 in QLD for Air-conditioning and Ventilation Design?

    Posted 5 days ago

    Hi Sonia,

    QBCC trade certifiers license allows them to do a Form12. Yes, we met with QBCC last year about this, and the fact Engineers having to compete with trades. We do this as well and very frustrated, that systems in A/C are not "DtS" - but require engineering to achieve acceptable operational performance. So EA. said that its engineering work.

    Also - PI we carry by law - they don't. We carry 10 million, they carry $250,000 as SC1 in assets under Finacial reporting rules. The Certifier is not getting the details that a SC1 can only certify $250,000 valued works annually and we told QBCC many trade contractors on a Certify license exceed this, breaching the law. They are not acting on it - but we are making advocacy attempts to get them to change the declarations on a FORM 12. Certifiers need to step up as they are responsible to assess competency in the Form12 author. 



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    Stephen Burton Engineers make it work...
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  • 8.  RE: Who can sign a Form 15 in QLD for Air-conditioning and Ventilation Design?

    Posted 5 days ago

    Hello Stephen,

    Do you think it would it be possible to obtain a formal statement from Engineers Australia on this matter?

    As recently as February 22nd, I received yet another query from a building certifier seeking a definitive position from either BPEQ or Engineers Australia on the competency requirements for Form 15 sign-offs. He was facing significant pushback from contractors frustrated that they could not sign Form 15s and insisting that an RPEQ was unnecessary.

    In my response, I again reinforced my view that applying ventilation standards requires engineering judgment, making it a professional engineering service. However, I also raised the broader issue of self-certification.

    Self-certification should only be allowed under very limited and controlled circumstances-if at all.

    There's a reason why not all building construction projects are self-assessable and, more importantly, why builders are not responsible for assessing their own BCA compliance. If they were, we'd soon see buildings made of paper-mâché. When judgment calls must be made on projects where there's a financial interest, the risk is that decisions will be guided by cost savings rather than compliance and safety.

    The same concern applies to mechanical services. Unlike structural elements, HVAC systems are largely invisible-fresh air rates, pressure balancing, and contaminant control aren't immediately apparent, meaning compliance is largely based on trust. If mechanical contractors are allowed to both design and self-certify their own work, there is a significant risk of non-compliant installations, driven more by cost efficiency than regulatory adherence.

    I do not benefit financially from determining that a room requires ventilation. However, if a mechanical contractor is allowed to both design and install systems while self-certifying their own work, they gain a substantial commercial advantage over competitors who correctly rely on independent assessments.

    The insurance disparity you raised is something I hadn't considered but will definitely raise with certifiers when this matter next comes up!



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    Sonia Holzheimer
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