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On some jobs we internally insulate the first 25' of duct for sound control then go to external insulation (cost) for the rest of the duct run.

Be sure to specify several flag poles around the property with big flags so you know what direction is downwind. (Run upwind). We do that at oil refineries. Don't forget some SCBA packs and OSHA warning signs.

We are about to start a LEED project (MEP). We are planning to use a leaf symbol next to LEED items on the drawings. This should help prevent items from getting VE off the job and help the reviewer spot items. What have people done on other project?

You might want to test the system after going to 220 F. That is above the temperature limit for some PEX.

Office rule - No PEX. CPVC is ok. Watch them like a hawk so they don't use PVC.

Revit MEP is getting better but it is not up to speed. We can still go faster in autocad. You should go to a Revit MEP training class because you would never figure it out on your own.

You could grab a photo of a SAT diver. Cut the rest of the photo out. Xref into Autocad as an OLE. I would also email the commercial diving schools.

I would start with a minimum of six (6) air changes per hour.

We did a sky bridge between two buildings. It was a glass enclosed walkway two stories above the street. We have to provide 45F to 85F climate control with 15% outside air. We had to provide a smoke exahust fan on the top. 6 air changes per hour. Fully sprinklered with a dry system. The City...

I think you will have to go with a "chemical" filter.

Nikon D80 with a 60mm maco lens

We specify diverting valves on our projects. They have given us better cooling coil temperature control than mixing.

Yes the barometric dampers at the RTU should be able to vent the relief air. My rule of thumb is 5-10% of the air will be lost thru the construction. You want to leave 10% of the return air in the space for pressurization.

Window screens that block sunlight also block the airflow thru the screen. If you never open the windows, screens have a lower installed cost.

imok2 is correct. a ductless split system / heat pump is the way to go.

The more water you add to the sanitary system the more chemicals($) the city has to add to the sanitary to treat the water. If the condensate goes to storm the city does not have to deal with it.

The city has to pay to treat water in the sanitary system.

20 air changes per hour should keep the odor level down. The supply air is typicaly from the feet end of the tabel and the exhaust is at the head end. You should have a high and low exhaust grille. Look at a fume hood exhaust fan to get the discharge high into the air.

Cut the cabinet and run the duct through it. You will give up a lot of storage space but a vent hood that works is worth it. Maintain the equivalent of 10" round.

Ventilation is cheaper than AC. On my job the trash room backed up to the pool deck so exhausting the room was not an option.