CSI MasterFormat · Division 33 Utilities
33 46 00 Subdrainage
Foundation drains, underdrains, and French drains.
See the assemblies, products and code sections for this spec: free for 14 days, no card required.Sign inStart free trial
The CSI MasterFormat code for Subdrainage is 33 46 00, in Division 33 (Utilities).
The full text is for BuildSpec members
Read the complete section, search across every adopted code, run the calculators and ask Copilot — free for 14 days, no card required.
- Fire-rated assemblies that satisfy this section
- Products and manufacturers in this section
- Insert into a project specification
Our previews are real data — live counts, no placeholders. We publish our error log →