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  1. John_187

    Industrial Ventilation Questions

    Hello, I have a few questions regarding ventilation for a some conditions below: 1. There is a large shop space with no flammable/combustible materials, with the exception of Class IIIB Engine Oil. This oil is being dispensed from reels. Being class IIIB, the flash point is so high that there...
  2. John_187

    Parking Garage with Non-Sprinkled Dry System - Only FDCs

    Hello, There is a large parking garage, that is 3 stories. None of the garage is below grade and the entire garage is exposed to the outdoors. The desired route is to provide dry piping throughout that is routed to various FDCs. Can someone point me in the direction of the applicable fire...
  3. John_187

    Gas Regulator Vent Termination Locations

    Hello, Does anyone have experience with or know of code in NFPA 54 or IFGC that states required distance for gas regulator vent terminations above grade? Want to terminate these through side wall on first level of the building. I can't find anything in these codes. Also, anything on distances...
  4. John_187

    Solid Core PVC vs Cast Iron Sanitary Risers

    Hello, For a high rise building, and a sanitary riser that serves for example 12 stacking levels - is it acceptable to use solid core PVC in lieu of cast iron for a bathroom group riser? Obviously the potential concern would be noise. However, the project is adamant that they want to use PVC...
  5. John_187

    Glass Break EPO Requirements?

    Hello, I am trying find out the requirements for Glass Break EPOs. WHat BTU/hr threshold in a boiler room requires the equipment to be tied into a Glass Break EPO? There is a situation with (3) 800,000 BTU/hr domestic water heaters in a room. Do these require glass break EPO? Thanks
  6. John_187

    Outside Air Damper Unoccupied Mode

    Hello, For the 2009 IECC, does an outdoor air damper need to close in unoccupied mode? At face value, I thought yes, however there are exceptions and conditions. This unit is partially being used as a makeup air unit as well (one of the rooms is not being returned due to 24/7 continuous...
  7. John_187

    Suds Relief for washing machine stacks?

    Hello, I don't belief the IPC lists "suds relief" or keeping a minimum distance of 8 ft from washing machine stacks (From other stacks). Only an obscure old reference from the UPC. I have never seen this called out on any plumbing plans. Only a slight reference to it recently brought it up in...
  8. John_187

    Fire rated wall cleanout?

    Does anyone know if a fire rated wall cleanout and cleanout cover exists? If you were putting a sanitary riser and wall cleanout in fire rated wall, would a typical stainless steel cleanout suffice? Or would there need to be some kind of fire rated access door? Pipe material is PVC, 4". Thanks
  9. John_187

    Omission of relief vent for waste stack?

    This question is about waste stacks and and relief vent connections at the base of the stack. The situation is a toilet only waste stack and vent stack that is 5 stories tall. There is a dedicated 2" vent stack and 4" waste stack for these toilets. First section 907 of the 2015 IPC mentions...
  10. John_187

    Hot Water Temperature to a bar area?

    I don't see a plumbing forum, so don't where to ask this question besides here. There is a bar area in a residential community assisted living center. There is no dishwasher, but there is a 3 comp sink. They say no washing will take place there (in spite of their being a 3 comp sink). There is...
  11. John_187

    Waste Stack Vent Questions

    Hello, There is a 5 story residential. I assume there is no issue with using a waste stack vent for fixtures that line up vertically floor to floor for a height of 5 stories (or about 60 ft max)? I have seen a similar design before. I know waste stack vent is not allowed for water closets and...
  12. John_187

    Standpipe requirements?

    Hello, There is a 6 story building. The pressure in the main is 90 psig minimum (static pressure is 110 psig). This is for a residential / senior assisted living building. I am not that experienced at FP design. I thought that any building over 3 stories required a stand pipe in the stairwell...
  13. John_187

    Issue of Filter Pressure Drop

    This is a common debate, but what do some of you use as common filter (MERV 8 for example) pressure drops. For clean filters, I have seen some around the 0.15" WC range. Dirty upwards of 0.4"WC? For residential furnaces for example, there is no way you can consider the dirty filter pressure...
  14. John_187

    Grade Mounted Evap Cooler - Drain?

    Hello, There are some grade mounted evap coolers. When the internal evap cooler water sump drains (weekly or daily), can it simply discharge to grade? Currently grade is concrete, but it can be converted to landscaping if necessary. If not, I assume it would have to air gap to waste. I...
  15. John_187

    Jockey pump for vertical turbine fire pump

    Hello There is a vertical turbine fire pump and there are some details I don't know about for how to install a jockey pump with this setup. The pump rep gave me a vague selection of a grade mounted jockey pump. The water level is 17 feet below grade in the pit below. Is there some kind of...
  16. John_187

    Sump pit distance from structural footing

    Hello. There is a structural footing for a small building that is 3'4" deep to the bottom of the footing, and the footing is about 2 feet wide. In general, how close can a sump pit be to this footing? Is 6" acceptable? 8"? The sump pit is circular, so it would be this close to the footing only...
  17. John_187

    Expansion loops - When to Use?

    Hello, I understand that a linear expansion calculation can be done to determine how much linear expansion has occurred for a certain straight run of pipe. However, is there a steadfast rule about how much linear expansion on a straight run will require an expansion loop? I have 80 ft of...
  18. John_187

    Cheaper - Evap Makeup Air Units or DX packaged units?

    Hello, As a general rule, what is considered cheaper for material cost - evaporative make up air units or DX packaged rooftop type units? Assume this is a dry climate where evaporative cooling is effective. Both units have indirect gas heat exchangers. Both units should provide the same cooling...
  19. John_187

    Adding a second receiver/storage tank to an existing air compressor

    Hello, Is it possible to add a second air receiver tank to an existing air compressor, tank setup? The existing compressor also has a refrigerated dryer. The only reason I thought of why not is having an air dryer downstream of the storage tanks. With 2 tanks, the instantaneous flow may...
  20. John_187

    Vertical Turbine Fire Pumps - Canned Lineshaft or Sumps?

    Hello, There is a remotely located fire pump to serve a building sprinkler system. A couple fire pump reps are saying either they are not aware of a canned lineshaft setup with their pump, or that it has to be in a 4 foot diameter sump. I had another manufacturer do a vertical turbine pump...

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