Causes. In ALS, the nerve cells that control the movement of your muscles gradually die, so your muscles progressively weaken and begin to waste away. ALS is inherited in 5 to 10 percent of cases. The other cases appear to occur randomly.
1 The smaller studio uprights usually weigh between 400 and 600 pounds. 2  The monstrous full vertical or large upright piano can weigh as much as half a ton.  A studio piano's center of gravity is also lower than a large upright's, as it is about 4 feet (1.2 m) tall as opposed to a large upright's roughly 5-foot height.
The action in such models was cut down in size and price, and the strings are too short; in fact, the minimum size for a Grand seems to be 4 ft.10 in. if the instrument is to be considered as a serious rival to a good Upright. Sizes and Types: The standard width of a grand piano is also about 5'.here are four types of vertical pianos, based on piano height: Spinet, Console, Studio, and Upright. The size is measured from the floor to the top of the lid. The spinet piano measures less than 36 tall. The console measures 40 to 44 tall.