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Isometric Drawing Requirements

Use the following checklist to ensure your drawings are complete and provide enough information to verify Building Code requirements as well as the requirements of the City of Thunder Bay Building and Sewer By-laws. A sample drawing is shown below.

Your isometric drawings must show:

  • Project location
  • Plumbing designer’s name and Building Code Identification Number (BCIN)
  • Date
  • Location and size of all drains
  • Location and size of all wastes
  • Location and size of all vents
  • Location and size of all stacks
  • Backflow prevention devices
  • Water distribution piping

Isometric Plumbing Drawing