18 Questions
What is the main advantage of a direct or upfeed system in a cold water distribution system?
Not affected by power interruptions
In a plumbing system, which component carries water from the source to the building?
Water supply and distribution system
What is the recommended depth below finish ground level for vitrified clay pipes used in building drains or sewers?
0.30 m
Which system is not affected by peak load hours and time needed to replace broken parts in terms of water supply?
Overhead feed/gravity system
What is the retention period for suspended matters in a septic tank to settle and stabilize?
24 hours
Which disadvantage is NOT associated with an overfeed or gravity system?
Water subject to contamination
What is the minimum water delivery in liters per minute for an outlet of a wet standpipe at a residual pressure of 1.8 kilos per sqm?
132 liters per minute
In a water distribution system, which location does not require the use of a full open valve?
on every hose bibb
What poor design in a plumbing system causes water supply drop when fixtures in series are simultaneously opened?
insufficiency in the size of the water service and distribution pipe
Which type of valve is required at locations like the supply pipe to every water heater in a water distribution system?
ball valve
What type of tank is used in a water system to store water at a certain pressure level?
Pressure tank
What causes a pressure tank or water system to experience low water supply when fixtures in series are opened simultaneously?
insufficient capacity of the tank
What is the impact of using PVC or other plastic pipes on a plumbing system's water supply?
reduced flow rate of water
Which type of valve uses a rubber gasket to shut off water flow and needs to be installed correctly for proper operation?
Stop valve
What process involves exchanging 'hard' ions for 'soft' ions, resulting in water with reduced hardness?
De-ionized water
Which system of water purification uses a semi-permeable membrane to separate impurities from drinking water?
Reverse osmosis
What type of water is known to contain trace minerals, chemicals, viruses, and bacteria, making it harder than distilled water?
Hard water
Which type of water may be hard (like calcium-hardened water) or soft (like rainwater) without being boiled?
Raw water
Test your knowledge on the plumbing system that delivers water from the source to various points in a building where water is used. Questions may cover topics like materials used, installation requirements, and maintenance considerations.
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