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.
HOW MUCH WATER SHOULD I DRINK EVERY DAY? The National Academy of Sciences recommends drinking about 11 cups of water per day for women and 16 cups a day for men.[3] But this number can vary based on lifestyle, body size, and other factors. If you're active, you'll need to increase your daily water intake.