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 Institute of Medicine, an independent and non-profit scientific organization, says that men aged 19 and over should generally take in at least 3.7 liters of total water every day â about 15.6 cups a day. Women ages 19 and up should take in 2.7 liters of total water every day, which is about 11.4 cups a day. And if pregnant or breastfeeding, the recommendations go even higher, to 12.6 cups and 16 cups, respectively.