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.
Total Daily Water. The exact amount of water you need every day varies depending on your gender, activity level and current state of health. Usually women need about nine 8-ounce cups of liquids daily, while men require 13 8-ounce cups. All beverages can account for your fluid intake, although water is calorie-free and cuts out any calories from regular sodas and sweetened teas when you drink it in place of these sugary beverages.