Joint sand used for paver applications should be a course, washed concrete sand. This sand takes more time to get into the joints, but is also more difficult to wash out. Do not use silica sand or mason sand. The joint sand should also be completely dry. If the sand you have is damp, spread it out to dry before using. Wet and damp sand will prevent it from flowing freely into the paver joints.
Drinking eight cups or two litres of water a day is longstanding advice. But is there any scientific basis for it, asks Dr Chris van Tulleken.
There is a very well accepted idea that we should drink about eight cups of water per day (two to three litres) in addition to our food and other drinks.here is no evidence that adding the eight cups of water to everything else you drink will do you any good and it could do you harm (American Journal of Physiological-Regulatory, Integrative and Comparative Physiology, November 2002, Drink at least eight glasses of water a day.