What does MDPE stand for?, A. Mains Distribution Plastic Equipment, B. Medium Density Plumbing Equipment, C. Medium Density Polyethylene, D. Mains Density Polyethylene, What is the normal minimum depth for an underground water service pipe?, A. 450 mm, B. 600 mm, C. 1000 mm, D. 750 mm, What is the normal maximum depth for an underground water service pipe?, A. 1350 mm, B. 1500 mm, C. 1000 mm, D. 750 mm, Why is a minimum depth specified for underground water pipes?, A. To increase the water pressure, B. To help protect against freezing and mechanical damage, C. To make the pipe easier to connect, D. To reduce the amount of pipe required, What colour MDPE pipe is normally used for a potable underground water supply?, A. Yellow, B. Black, C. Blue, D. Green, Which pipe size is commonly specified as a minimum for a new domestic service connection?, A. 15 mm, B. 25 mm, C. 22 mm, D. 20 mm, Which material was commonly used for domestic underground water supplies in older UK properties?, A. Lead, B. ABS, C. Polybutylene, D. Stainless steel, Why is lead pipe no longer suitable for new drinking-water supplies?, A. It freezes too easily, B. It cannot be buried, C. Lead can contaminate water, D. It cannot withstand mains pressure, A new MDPE water pipe is installed only 500 mm below ground. What should happen?, A. Nothing – 500 mm is acceptable, B. It should automatically be insulated only, C. It should be painted blue, D. The water undertaker should be notified, An underground service pipe is proposed at 1500 mm deep. What is the issue?, A. There is no issue, B. It exceeds the normal maximum depth, C. It is 250 mm too shallow, D. MDPE cannot be installed below 1000 mm, Which is the correct normal depth range for an underground service pipe?, A. 450–750 mm, B. 600–1000 mm, C. 750–1350 mm, D. 1000–1800 mm, What unit is commonly used to measure water pressure in UK plumbing?, A. Litres, B. Bar, C. Metres per second, D. Kilowatts, What's the two components in this picture?, Gate valve and pressure reducing valve, Stop tap and drain off, Which of the following pipe materials can be used as an alternative to MDPE for an underground mains water supply to a property?, A. PVC waste pipe, B. PEX heating pipe, C. Copper pipe-soft grade, D. ABS pipe, This pipe is installed at a depth of 1250mm, is that correctly installed?, No, Yes

M.D.P.E pipe

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