SPDI Past Exam 2022

Has a larger trapway making it less likely to clog, quieter flushing action and retains a large amount of standing water

• flushing action

• smaller trapway

• standing water

• Siphon Jet

Less noisy and very efficient, flushing action is started by a whirlpool motion followed by a complete flush down and retains a large amount of standing water

• Siphonic vortex

• Dual flush system
• Gravity flush system
• Pressure-assist flush system

flushing action is obtained directly from a flush valve connected into the bowl

• flush handle
• flush lever
• flush button
• direct flush valve

Receptor floor shall drain not less than

• 1% - 2% slope

• 2% - 3% slope

• 3% - 4% slope

• 2% - 4% slope

conveys only wastewater or liquid waste free of fecal matter.

• drainage ditch
• stormwater drain
• waste pipe

• water treatment plant

used for ensuring the circulation of air in a plumbing system and for relieving the negative pressure exerted on trap seals.

• Air admittance valve (AAV)
• vent pipe

• Backflow preventer
• Pressure relief valve

a fitting or device designed and constructed to provide, when properly vented, a liquid seal which prevents the backflow of foul air or methane gas without materially affecting the flow of sewage or wastewater through it.

• gas lock
• odor stopper
• ventilation seal
• trap seal

the vertical main of a system of soil, waste or vent pipings extending through one or more stories and extended thru the roof.

• Conduit
• Stack
• Tube
• Pipe

any part of the piping system other than a main, riser or stack.

• trunk
• branch
• offshoot
• stem

part of the lowest horizontal piping of a plumbing system which receives the discharges from the soil, waste and other drainage pipes inside of a building and conveys it to the house sewer outside of the building.

• Sewer Trap
• Drain Trap
• House/Building Drain

• Pipe Trap