Occasionally, authorities such as councils and your local regulatory authority require plumbing plans to be submitted as part of your application for development approval. Authorities may also require you to provide “as installed” or “as constructed” drawings showing how a plumbing installation was actually done once your project is completed. Besides the occasions when authorities want you to provide plumbing plans, you may want to provide plumbing plans to contractors to use as a solid guide for pricing purposes before you begin your construction project.
Plans provided for approval are typically for demonstrating to the authority that the plumbing work will comply with the relevant standards, and that the installation is feasible. ie – that the drain will make grade and maintain depth of cover throughout its length. Authorities may also want to see the documentation of an atypical requirement which they may have deemed necessary for your site.
As constructed plans are usually provided for future reference. Dimensioned drawings enable accurate location of services, inspection openings, valves, and equipment. The ability to consult as installed plumbing plans greatly assists contractors and property owners in cases of maintenance, and alterations or additions to services.
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