Presentation on theme: "Plumbing for Kitchens & Baths Supply System Drain Waste and Vent."— Presentation transcript:
Plumbing for Kitchens & Baths Supply System Drain Waste and Vent
Water Meter Housing
supply Water enters the house in ¾” to 1” pipe Pressure Reduction Valve 80psi coming in Reduce to psi
Pressure Reduction Valve
Hot Water Heater Supply Hot Water Heater- gas
Hot Water Heater Supply Electrical Water heating can account for 14%–25% of the energy consumed in your home
Water heaters with higher energy factors cost less to run. Use this factor to compare the operation cost of various water heaters.
Web Resources ml
Tankless Versus Conventional
Tankless Hot Water Heaters
Hot Water Heater Supply
Heat Pump Water Heater Supply
How hot is Hot? Cold to Cool – 60° to 98.6° Comfort Level – 98.6° - 105° (6.4° Range) Uncomfortable – 105° - 115° Dangerous – 116° and higher
Controlling Hot Pressure Balanced Fittings/ Temperature Limiting
Controlling Hot Thermostatic Fittings
Copper K L M Grades
M Grade – thinnest grade used inside the home L Grade – thicker pipe used for service K Grade – thickest pipe used between water main and meter
CPVC (chlorinated polyvinyl chloride) supply
PVC Cold Water Only Schedule psi Type 1, Grade 1 (White) Schedule psi Type 1, Grade 1 (Gray) Schedule 120 High Pressure and Corrosion Resistant
PEX Polyethylene Cross-link
Traditional Water – Piping System
Manifold Distribution System
Floor Joist Modifications Notching Floor Joists, Rafters & Beams Depth of notch not to exceed 1/6 depth of member Width of notch not to exceed 1/3 depth of member Notches not permitted in the center third of member Notches at end not to exceed ¼ depth of member
Supply If supplying water to 1-2 fixtures, use ½” water lines (A ¾” tub filler could be and exception.) When supplying water to three or more fixtures or appliances use ¾” water line.
Plumbing Codes Shield Plates are required for all but cast iron pipe within 1 ½” from the nearest edge of the framing member. Plates must be 1/16” thick and extend 2” above the sole plate and below the top plate. Pipes passing through footings or concrete walls must be protected by a pipe sleeve.
Plumbing Codes Water drain and sewer pipes must be protected from freezing. At least 12” deep and at least 6” below the frost line. (Depends on county) Testing of piping systems
Supply System Stop ½” ¾” 3/8” 1/2”
Bath Design Considerations Try to hide the stops when planning pedestal lavs.
Bath Design Considerations Consider the finish when designing wall- hung or console lavatories
Bath Design Considerations Consider the finish when selecting toilet trim
Bath Design Considerations The stop for a standard toilet may need to be lowered for a low profile toilet
Bath Design Considerations Some 1-piece toilets require a ½” stop rather than the typical 3/8” stop.
Bath Design Considerations Every fixture should have a stop Be sure that stops will not interfere with proper drawer function During a remodeling project always replace existing stops, because of the low cost of stops, price should never be an issue.
Major differences between DWV and supply systems DWV pipes are large to carry solid waste DWV pipes slope downhill so gravity will remove the waste DWV pipes have “soft” not sharp angles and turns
DWV Parts Traps – Curved pipes that create a water seal to prevent sewer gasses from entering the home
DWV Parts Drain-Piping – Horizontal pipes that carry waste for the fixtures and appliances. Stacks – Vertical Pipes that drop the waste to lower levels of the home House and Sewer Drains – Horizontal pipes that remove the waste from the home to the sewer or a septic tank and drain field. Vent Stacks and Pipes – Pipes that will eventually extend through the roof of the home, preventing traps from being siphoned dry.
DRAIN PIPINGSTACKSHOUSE & SEWER DRAINS TRAPSVENT STACKS & PIPES Building Drain Sewer Line
Materials used for DWV pipes "[Oakum is] loose fibers obtained from old ropes which were then sold to the navy or other ship-builders - it was mixed with [pine] tar and used for caulking (sealing the lining) of wooden ships.
Materials used for DWV pipes
DWV Horizontal Drain Piping – drops ¼” per foot If 1/8” slope solid waste will settle in the pipe and create a dam. If ½” slope or more liquid waste will flow over the solid waste without moving it along.
DWV Drain pipes vary in size 1 ¼” for small drains like bathroom lavatories 1 ½’ to 2” pipes are used on larger fixtures such as kitchen sinks, showers, bathtubs and washing machines. They will also drain multiple fixtures. 3” to 4” drains are the largest you will encounter in the home and are typically used for toilets and near the end of the DWV system.
S-Trap and Drum TrapsDWV
Trap Facts All plumbing fixtures require traps All traps require vents A critical distance must be maintained between the trap weir and the nearest vent