Duct construction types

[Golestan]

Good Morning,
Guys can you help with these questions please:

1- How is the insulation requirements & construction type noted on mech-plans for aduct passing thrugh a basically unconditioned space. This would be a high pressure primary air from an AHU to a few fan powered boxes.

2- I am looking at some old mech plans from 1971 for a large facility, there are a couple of large boxes shown as induction boxes on the duct path. What is the function of this box?

thanks,

 

[TonsRus]

Insulation is in the specification issued with the drawings. There also might be a note on the drawing.


Steve

 

[ChrisConley]

I generally note the insulation requirements in the Project Manual, ditto the duct type.

You can note pressure class on the drawings, and then reference the class to the construction.