Corpus sync: neutrality remakes, note hygiene, datasheet relocation, transformer-split cross-refs
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title: Site Water Distribution Piping
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# Quality Assurance {toc}
−## The Contractor shall employ installers experienced in the installation of pressurized water distribution piping of the type and size specified. {note}
+## The Contractor shall employ installers experienced in the installation of pressurized water distribution piping of the type and size specified.
−## Mechanical joints, restrained joints, and thermoplastic fusion each demand specific technique; improper assembly is the most common cause of test failures and in-service joint separation. Fusion of HDPE in particular shall be performed only by an operator qualified on the equipment in use. {note}
+## Mechanical joints, restrained joints, and thermoplastic fusion each demand specific technique; improper assembly is the most common cause of test failures and in-service joint separation. Fusion of HDPE in particular shall be performed only by an operator qualified on the equipment in use.
## All pipe, fittings, valves, gaskets, lubricants, linings, and coatings in contact with potable or reclaimed water shall be certified to NSF/ANSI 61.
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### Restrained joints shall be provided at all bends, tees, crosses, reducers, caps, plugs, valves, and dead ends, and for the full calculated restrained length on each side of the fitting.
−## Restraint must extend the full calculated length, not just the fitting. {note}
+## Restraint must extend the full calculated length, not just the fitting.
## The restrained joint at a fitting only anchors that fitting; the unbalanced thrust is resisted by the friction and bearing developed over a length of restrained pipe on each side. That length depends on pipe size, design pressure, depth, and soil, and shall be calculated or taken from the utility's standard detail. Restraining only the fitting itself, with unrestrained pipe immediately beyond, leaves the assembly free to pull apart on pressurization. {note}
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## Pipe, gaskets, and linings degrade if mishandled or left exposed, so protection from delivery through installation is part of the work. {note}
−## Pipe shall be handled with wide slings, not chains or hooks through the bells, and stored off the ground. PVC and gaskets shall be shaded from prolonged ultraviolet exposure. Open pipe ends shall be plugged whenever work stops so soil, water, and animals do not enter and contaminate the main before disinfection. {note}
+## Pipe shall be handled with wide slings, not chains or hooks through the bells, and stored off the ground. PVC and gaskets shall be shaded from prolonged ultraviolet exposure. Open pipe ends shall be plugged whenever work stops so soil, water, and animals do not enter and contaminate the main before disinfection.
### Pipe and fittings shall be loaded, unloaded, and handled to prevent impact, gouging, and damage to linings, coatings, and bell ends.
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### The Contractor shall repair or replace any pipe, joint, valve, or appurtenance that leaks, separates, or fails within the warranty period, and shall restore disturbed surfaces, at no cost to the Owner.