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.
Sizes and Types-The standard width of an upright piano is about 5' and the depth is between 2 - 2 '. The total floor space allowance should be about 5' wide by 5' deep, including bench space.izes and Types-The standard width of an upright piano is about 5' and the depth is between 2 - 2 '. The total floor space allowance should be about 5' wide by 5' deep, including bench space.