Plumbing A House Flashcards
(26 cards)
How do I map out a plumbing system for a whole house?
Identify the layout and necessary components for the plumbing system
Consider the location of fixtures and the main water supply.
Where should I run main water and drain lines?
Main lines should be run to central locations for efficiency
This minimizes the distance to fixtures and reduces potential pressure loss.
How far can fixtures be from the main stack or water heater?
Fixtures should be within a reasonable distance to ensure proper flow
Typically, this distance varies based on local codes.
What’s the best way to organize the plumbing in a two-story house?
Group plumbing fixtures on the same wall when possible
This helps to minimize the length of pipes and reduces installation complexity.
What size pipes do I use for each fixture?
Pipe sizes vary based on fixture requirements
Standard sizes include 1/2 inch for sinks and 3/4 inch for showers.
Should I use a trunk-and-branch system or a home-run system (PEX manifold)?
Choose based on the layout and efficiency needs
Trunk-and-branch is more traditional, while home-run offers flexibility.
How do I connect a water heater properly?
Follow manufacturer guidelines for connections
Ensure proper venting and drainage.
What’s the best way to test for pressure and leaks?
Perform a pressure test using a gauge
Check for drops in pressure over time to identify leaks.
How much slope do drain pipes need?
Drain pipes require a slope of 1/4 inch per foot
This ensures proper drainage.
Can I combine drains from multiple fixtures?
Yes, but follow local codes for proper sizing and venting
Combining drains can simplify the plumbing layout.
How do I size and place vent pipes correctly?
Size based on the number of fixtures served
Proper placement prevents sewer gases from entering the home.
What’s wet venting and when is it allowed?
Wet venting allows a drain pipe to serve as a vent for another fixture
Allowed under specific conditions in plumbing codes.
How far can a vent be from a toilet or sink?
Distance varies by code, typically within 5 to 10 feet
Check local plumbing regulations for specifics.
Can multiple fixtures share a single vent?
Yes, provided that the vent is sized correctly
This can save on material and installation costs.
What’s an AAV (air admittance valve), and when can I use one?
An AAV allows air to enter the plumbing system without venting outside
Used in specific circumstances where traditional venting is impractical.
How do I run vent pipes through walls and attics?
Follow local codes for routing and securing vent pipes
Ensure that the vents are accessible for maintenance.
What’s the difference between PEX, CPVC, and copper for water lines?
Materials differ in flexibility, cost, and installation ease
PEX is flexible, CPVC is cost-effective, and copper is durable.
What type of pipe is best for drain lines?
PVC is commonly used for drain lines
It is lightweight and resistant to corrosion.
What tools do I need to install each type of pipe (PEX crimper, soldering kit, etc.)?
Tools vary by pipe material
Common tools include pipe cutters, wrenches, and fittings.
How do I do a pressure test for water lines?
Use a pressure gauge and apply pressure to the system
Monitor for any pressure drops to identify leaks.
What’s the process for testing the DWV system?
Conduct a water test to check for leaks and proper drainage
Ensure all fixtures are functioning correctly.
What does an inspector look for before approving the system?
Inspectors check for compliance with codes, proper installation, and functionality
They ensure safety and efficiency of the plumbing system.
How do I rough in a shower, tub, toilet, or sink?
Follow the design layout and local codes for rough-in measurements
Ensure proper placement for drainage and water supply.
