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SEAMS.

Los Angeles Municipal Code § 57.2404.7.9.2
in effect
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SEC. 57.2404.7.9.2. SEAMS. All seams in any duct or pipe shall be made tight by crimping or other equally efficient manner without the use of solder or combustible materials, and all sections shall be securely joined.
Source: City of Los Angeles, Charter and Codes (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/los_angeles/latest/lamc/0-0-0-348550Fetched: 10/24/2026

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