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 does one person need to drink per day? you should drink at least 7 to 10 average sized glasses of water each day.   One average sized glass is about eight ounces. There are 16 ounces in a pint, 2 pints in a quarâ¦t, and 4 quarts in a gallon, so, mathematically, there are about 128 ounces in a gallon.