Underfloor Framing Inspection basics. Referenced Links Below Time Stamps. Enjoy!

The Purpose [Intro] -- 0:00
General Requirements -- 1:04
Start (Floor Framing) -- 1:36
Underfloor Plumbing -- 5:05
Underfloor Gas Pipe -- 6:43
Underfloor Water Pipe -- 7:19
Pipe Tested With Air (Explosion) -- 8:11
Underfloor Mechanical -- 8:27
Example Energy Compliance Forms (Finding Duct R-Value) -- 10:02

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Links:

Code Check Illustrations Used In This Video:
https://codecheck.com/

View Both The Uniform Plumbing and Mechanical Code Study Guides And The Illustrated Training Manual:
https://www.iapmo.org/group/update/it...

View and Purchase All State and Model Codes:
https://codes.iccsafe.org/codes

PVC Pipe Under Air Pressure Test (Explosion):
   • Plumbing Pressure Test With Air  

TJI Manufactured Joist Installation Guide: https://www.weyerhaeuser.com/woodprod...

Flex Duct (ATCO) Manufacturers Installation Guide (Matches Code Requirements):
http://www.atcoflex.com/uploads/4/9/4...