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  1. MechWang

    C&C roof mechanical louver doors

    Yes, it is a double door with the louver placed in the cutout middle section of the door, say a foot from the sill and top section of the door. The roof mechanical room dimension where the door to be placed is 15’x19’ and directly in front of the louver door is the roof elevator machine room and...
  2. MechWang

    C&C roof mechanical louver doors

    Hello everyone, just being stumped with this one, I am trying to replace a mechanical room louver double door located at a 15 story building roof and my structural engineer propose a high negative design pressure (in the hundreds) which is very unusual for louver doors and per calculation using...
  3. MechWang

    Working on a multi discipline existing building project cooling tower

    @hvac_novice, I am asking because most of work is on existing buildings and referring to building code existing buildings, have anyone experience this kind of conversation with a structural engineer and what compromise or solution you come up with. You mention either you lower the weight or...
  4. MechWang

    Working on a multi discipline existing building project cooling tower

    This is for cooling tower project that I am working on, is this something you typically encounter?
  5. MechWang

    Working on a multi discipline existing building project cooling tower

    I just got the code reference and its for 2020 Florida existing building code section 707.2 Addition or replacement of roofing or replacement of equipment. This is the code that the structural engineer is referring to that i cannot increase the weight of the existing cooling tower by 5% which...
  6. MechWang

    Working on an MEP cooling tower replacement project

    Hello all, I am currently working on several cooling tower projects and would like to know how what is the process or what information should I provide, do I ask structural engineer to provide me a cost to review the existing structure, compare the existing and proposed cooling tower operating...
  7. MechWang

    Working on a multi discipline existing building project cooling tower

    Well, I have been on several buildings and when i talked to building management, MEP firm came in with the contractor and replace their cooling tower. What i notice is the existing concrete structures were never touched but brand new steel beam supports and isolators is what i saw. Does that...
  8. MechWang

    Working on a multi discipline existing building project cooling tower

    Hello all, just wondering how is your experience working with other discipline particularly structural engineers. I am just sharing my experience, I have worked on several cooling tower projects now and none of them have been executed because structural team says my proposed tower is always...
  9. MechWang

    Cooling Tower Replacement

    Thank you all for the tips, the hvac suppliers are a mine of information, really help me a lot, I am getting the hang with the BMS system. I am a little lost with regards to implementing variable speed pumps for the cooling tower as I had the impression that too will have VFD's. so far, VFD is...
  10. MechWang

    Cooling Tower Replacement

    Yes they are chillers, I as i have said, i am really green with regards to hvac design, but im willing to learn, and not having any existing drawings make it more hard to learn the original design, and as previously mentioned, blind copying what was there is not really a good start to learn...
  11. MechWang

    Cooling Tower Replacement

    Pardon my ignorance, i dont see a chiller, I see a Trane scwg model (2) 30 TON and (2) 35 TON. existing tower is Marley has 2550 gpm Condenser pump 2500 gpm, Yaskawa vfd. no existing drawings whatsover. I am here in Broward Florida. I just need some guidance on how to tackle so i dont duplicate...
  12. MechWang

    Cooling Tower Replacement

    Hello All, Newbie here, just want to get some expert advice, with regards to cooling tower replacement. Do you just get the same specs of the cooling tower and replace it same for same? or you still calculate the heat load of the building to compare to existing? second, when you change the...

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