Lecture 2.pdf - BUILDING UTILITIES 1 Module 2 Lecture 2 Plumbing Vents The plumbing vent system is part of the building plumbing drain system and serves

Lecture 2.pdf - BUILDING UTILITIES 1 Module 2 Lecture 2...

This preview shows page 1 - 7 out of 39 pages.

BUILDING UTILITIES 1 Module 2 Lecture 2 Plumbing Vents
Image of page 1
The plumbing vent system is part of the building plumbing drain system and serves three basic functions: 1. Allow building drains to flow freely by allowing air into the drain system, avoiding the vacuum and slow drainage that would otherwise occur at fixtures. 2. Allow sewer gases to be vented safely outdoors. o Sewer gases may flow back into the building drain piping from a public sewer or private septic system, thus the plumbing vent system needs to carry these gases outside, usually above the building roof, where they are disposed-of safely and without leaving unpleasant, or possibly dangerous smells and gases inside the building. 3. To keep the water from siphoning out of the traps.
Image of page 2
Branch vent a vent pipe extending horizontally that connects multiple vents together from a branch of the drainage system to a stack vent or vent stack. Fixture drain Wet vent Portion of a vent pipe through which liquid waste flow Individual vent Serves as a continuation of the trap arm but can also be the vent that serves a bathroom group that is being wet-vented. Fixture branch P-trap
Image of page 3
Vent stack the main vent for a DWV system; receives other vents and terminates to open air through the roof or connects with the stack vent Stack vent an extension of a soil or waste stack above the highest horizontal drain connected to the stack; the vent for the waste stack and begins where the WS ends. Circuit vent a branch vent that serves a specific design known as battery venting (more than one fixture); it is installed before the last fixture extend up to open air or connects with the vent stack and not the stack vent. Loop vent same as circuit vent, except that this design is on the highest branch interval; typically does not require a relief vent, and connects to the stack vent and not to the vent stack Relief vent a vent that provides circulation of air between drainage and vent system ; serves to relieve pressures of a specific area of a system.
Image of page 4
Located above the highest horizontal drain connected to the stack; the vent for the soil or waste stack and begins where the soil or waste stack ends.
Image of page 5
Important criteria to remember when sizing a conventional venting system composed of individual fixture vents, vent stacks, and stack vents.
Image of page 6
Image of page 7

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture