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.
The amount of water that adults need varies, but in general, men should drink at least 13 cups (3 liters) of fluids per day. Women should drink at least nine cups (2.2 liters) of fluids per day. A good rule of thumb is to drink between .5â1 ounce of water for each pound you weigh.