drain layer
(General Contractor MUST attend)
Consultants are given an irrevocable and non-exclusive license to use the Instruments of Service. and unlimited license to use the Instruments of
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Drainlayer License
A drainlayer license is required to obtain a permit for the construction, repair, adjustment, rodding or cleaning of any subsurface structure designed to
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Houston Amendments to the 2012 Uniform Plumbing Code
Each person engaged in the actual installation of plumbing shall be licensed either as a master or current journeyman plumber or registered as an apprentice by
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