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  1. GMcD

    Building Services fees and collections Mech/Plbg/Elec

    I did a search and found "some" discussion about this a few years back, but thought I'd throw this out for opinions and comments: Nearly 90% of my clients (architects mainly, with the odd developer direct client) take over 90 days to pay invoices - "It's our policy not to pay consultants till...
  2. GMcD

    Variable Refrigerant Flow (VRF) systems experiences?

    North American HVAC Engineer here, looking for other world views on installation and operational issues related to VRF systems. These are relatively new to North America and I am concerned about the general operating pressures (what happens with 400 psig+ leaks of R-407 or R-410??) as well as...
  3. GMcD

    Going Beyond LEED- Building Systems Engineering

    I am going to be giving a presentation on "going beyond LEED" for building systems engineers, so to all of you who are familiar with the USGBC/CaGBC LEED program, what would you want to see at a presentation like this? What sort of information would be useful to you as a building engineer who...

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