Usually folks figure sand at 100 pcf. There are 27 cubic feet in a cubic yard. So to continue the answer the previous poster made... Using the 100 pcf average weight for sand, and that there are 27 cubic feet in a yard, then 2 yards is equal to 54 cubic feet and at 100 pcf, the total weight is 5400 lbs, or 2.7 tons.
The walking distance measure denotes the distance that can be travelled by walking in a fixed amount of time. In Japan, the standard measure for walking distance is 80 meters for 1 minute of walking time. It is the standard used in real estate listings. For example, if a building is a 10 minute walk from a particular park or train station, it is 800 meters away.
Although there are numerous ways to calculate your stride, the simplest way is to walk ten steps, measure the distance traveled, and divide that measurement by 10. Required tools include a tape measure, chalk or other marking device, and a calculator. This process takes less than 5 minutes.