Recent content by Golestan

Thank you all for your comments. They are all important issues.

Hi, I am back from ASHRAE in NYC, the buzz word this year is of course Green and Sustainable Design. It would be beneficial for our forum to get some definitions and examples of this topic. I for one want to know more on the sustainability issue and how to apply it to HVAC design. thanks,

I just got back home to Texas. NYC was cold on Monday and Tuesday, high was 25-F. Went to a few meetings and did the show for 1/2 day. The theme is "GreeN" and sustainable. What are a few simple definitions for sustainable? Regards,

you probabely will need p-trap and vent. And might even need a trap primer. check with your plumbing inspector authority.

Here are my thoughts: Friction coefficient is lower for round ducts. Metal round ducts and externally wrapped insulation will be easier to clean for future duct cleaning. Keep any round flex duct to min. 5-6 ft. long. For lower pressure drop, use smooth bends and transitions. For low noise...

Hi, I need to learn more on the induction box application. Is it still used? I am looking at remodeling a 30 year old large facility, and on the old plans I see boxes that looks like a VAV box supplying air to the rest rooms, but labled as an induction box. Are there any manufactureres...

That is a great idea if we could see some of the neat and tricky vba's. I myself am trying teach myself how to write them. I know Basic and Fortran from a longtime ago, but have not done any vba. regards,

Hi, Are you trying to find imperfections in the insulation or are you doing cathodic protection? Please clarify what function the holiday test is for.

I am not sure if this is the correct forum, but any help will be appreciated. I was looking at a package of plumbing submittals and for water closets, the supplier had the water surface areas listed. Are there any standards on this parameter. What is considered code, good or un-acceptable...

Bell and Gossett has very good litrature and their school is called the Little Red House training programs. Morton Grove near Chicago.

Thanks for all your contributions and questions/answers.

Hi, Does ASHRAE 62-XXXX have any values for exhaust from rest rooms in public buildings? What is the min required from Building code perspective. I am confused because some codes refer to Area, some to People and some to Number of stalls. Thanks,

Hi, What is the required wall fire rating for the boiler room of a dry cleaner shop? How about the wall rating for the entire store. I am working on the MEP for construction of a dry cleaner as a finishout inside of an existing shell building. Shell building is brand new. Has fire sprinkler...

Hi, I recommend about 250 sq-ft/ton. Units should be provided with economizer and enthalpy control option. Make sure they are taking-in 10-20% fresh air per ASHRAE std. There is a software demo from ELITE. you may be able to use it it has a limitation on the size of the building. Easy to...

Hello, This may be a simple one. I have a 12000 sq-ft white box finish out. It needs to have 2 RTU's @ 15 ton each. Fresh air should be at 25%. Can a baromtric relief damper on the unit compensate for the extra air brought in. Does it depend on the unit construction? Or do I need to relief...