Sanitary Waste and Vent Piping
Corpus sync: neutrality remakes, note hygiene, datasheet relocation, transformer-split cross-refs
Showing changes from Rev 5
to Rev 6
in Sanitary Waste and Vent Piping.
---
title: Sanitary Waste and Vent Piping
…125 unchanged lines
### The following materials are specified for the applications indicated. {note}
+### The choice of pipe material shall be established by the contract documents.
+
```datasheet
label: Above-Grade Interior Pipe Material
…16 unchanged lines
default: "Hub-and-spigot cast iron (ASTM A74), compression gasket joints"
```
−
−### The choice of pipe material shall be established by the contract documents.
### Where the contract documents permit more than one material for a given portion of the system, the Contractor shall submit the proposed material for each location and shall not mix materials within a continuous run without an approved transition fitting.
### Hubless cast iron is the preferred material for above-grade interior sanitary piping in commercial and institutional buildings, providing superior noise attenuation, impact resistance, service life, and fire resistance relative to plastic piping. {note}
…246 unchanged lines
## Floor Drains {toc}
−### General {toc}
+### Floor Drain Body and Connection {toc}
```datasheet
…87 unchanged lines
# Hangers and Supports {toc}
−## General Requirements {toc}
−
−### All pipe shall be supported continuously so that it cannot sag, deflect, or move under the weight of the pipe, the fluid it carries, and construction loads.
−### Piping shall not rely on adjacent pipe, conduit, ductwork, or building insulation for support.
−### Every hanger and support shall be capable of carrying the weight of the pipe, fittings, couplings, and the water weight of the pipe when full, without yielding or deflecting more than 1/16 inch per 10 feet of supported span.
−### Hangers and supports shall conform to MSS SP-58 for materials and design, and shall be selected and spaced in accordance with MSS SP-69.
−### Field-fabricated hangers are not permitted.
+## All pipe shall be supported continuously so that it cannot sag, deflect, or move under the weight of the pipe, the fluid it carries, and construction loads.
+## Piping shall not rely on adjacent pipe, conduit, ductwork, or building insulation for support.
+## Every hanger and support shall be capable of carrying the weight of the pipe, fittings, couplings, and the water weight of the pipe when full, without yielding or deflecting more than 1/16 inch per 10 feet of supported span.
+## Hangers and supports shall conform to MSS SP-58 for materials and design, and shall be selected and spaced in accordance with MSS SP-69.
+## Field-fabricated hangers are not permitted.
## Maximum Hanger Spacing {toc}
### Maximum hanger spacing shall comply with the adopted plumbing code and with the pipe manufacturer's recommendations.
### In the absence of more stringent requirements from the contract documents, the following maximum spacing applies: {note}
−```datasheet
−label: Cast Iron Pipe Hanger Spacing (Above Grade)
−type: select
−unit: ft on center
−drawing_ref: true
−options:
− - "5 ft on center"
− - "At each joint and coupling, plus at midspan of pipe lengths exceeding 5 ft"
−default: "5 ft on center"
−```
+### The hanger type for horizontal cast iron piping shall be specified to provide the required support at each coupling and at the specified maximum interval.
```datasheet
−label: PVC DWV Pipe Hanger Spacing (Above Grade)
−type: select
−unit: ft on center
−drawing_ref: true
−options:
− - "4 ft on center maximum"
− - "Per pipe manufacturer's recommendation based on temperature and pipe size"
−default: "4 ft on center maximum"
−```
−
−```datasheet
label: Hanger Type for Horizontal Cast Iron
type: radio
…18 unchanged lines
### Cast iron soil pipe — both hubless and hub-and-spigot — shall be supported at every coupling and at not more than 5-foot intervals between couplings.
+
+```datasheet
+label: Cast Iron Pipe Hanger Spacing (Above Grade)
+type: select
+unit: ft on center
+drawing_ref: true
+options:
+ - "5 ft on center"
+ - "At each joint and coupling, plus at midspan of pipe lengths exceeding 5 ft"
+default: "5 ft on center"
+```
### Supporting at every joint is the recommended practice because it prevents the joint from experiencing any bending moment from span loads, which could work the coupling gasket loose over time. {note}
### PVC DWV pipe shall be supported at not more than 4-foot intervals for 3-inch and smaller pipe, and at not more than 4-foot intervals for 4-inch and larger pipe, unless the pipe manufacturer's literature or the contract drawings specify closer spacing.
+
+```datasheet
+label: PVC DWV Pipe Hanger Spacing (Above Grade)
+type: select
+unit: ft on center
+drawing_ref: true
+options:
+ - "4 ft on center maximum"
+ - "Per pipe manufacturer's recommendation based on temperature and pipe size"
+default: "4 ft on center maximum"
+```
### Hangers for PVC pipe shall not be cinched tightly against the pipe wall; the hanger shall support the pipe from below without constricting it, allowing the pipe to move longitudinally as it expands and contracts with temperature changes.
## Vertical Stack Support {toc}
…152 unchanged lines
# Testing {toc}
−## General {toc}
−
−### The entire sanitary drain, waste, and vent system — all above-grade piping, below-slab piping, and branches to fixtures — shall be tested after rough-in is complete and before any piping is concealed by insulation, finishes, or other construction.
−### No piping shall be covered, backfilled, or enclosed within fire-rated assemblies before the applicable test has been completed and accepted.
−### The Contractor shall provide test notices to the Engineer and to the Authority Having Jurisdiction in sufficient time to allow witnessing; in most jurisdictions, the rough plumbing inspection must be witnessed by the building department inspector.
−### All tests shall be performed in the presence of the Engineer's inspector and, where required by the authority having jurisdiction, the building department inspector.
−### Any portion of the system that shows evidence of leakage, loss of test head, or loss of pressure shall be repaired and re-tested until the section demonstrates compliance.
+## The entire sanitary drain, waste, and vent system — all above-grade piping, below-slab piping, and branches to fixtures — shall be tested after rough-in is complete and before any piping is concealed by insulation, finishes, or other construction.
+## No piping shall be covered, backfilled, or enclosed within fire-rated assemblies before the applicable test has been completed and accepted.
+## The Contractor shall provide test notices to the Engineer and to the Authority Having Jurisdiction in sufficient time to allow witnessing; in most jurisdictions, the rough plumbing inspection must be witnessed by the building department inspector.
+## All tests shall be performed in the presence of the Engineer's inspector and, where required by the authority having jurisdiction, the building department inspector.
+## Any portion of the system that shows evidence of leakage, loss of test head, or loss of pressure shall be repaired and re-tested until the section demonstrates compliance.
## Water Test {toc}
…135 unchanged lines
## The warranty shall not limit or replace the Contractor's obligation to comply with all applicable code requirements and the requirements of this standard.
## A system that does not leak but was installed with incorrect slopes, improper fittings, or inadequate supports shall still be corrected at the Contractor's expense if deficiencies are discovered within the warranty period.