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This is one for serious techies I think: I have a 12m run in 15mm pipe from the water main stopcock in the pavement to the stopcock in my house. Water runs at a maximum at 18 litres per minute along this pipe, into the house plumbing with lots of outlets open. The pressure is around 3bar at...

Hello. I wonder if you could help with a question to see if I need to invest in a Structural Engineer and progress with a small project Situation: three storey house no access hatch joists at 16 inch centres Joist span c. 3720mm/12' 2" Want to create structural opening c 860mmx860mm, requiring...