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 housing is probably lighter than the carrier by a few pounds, the carrier weighs about 100lbs, maybe as much as 120lbs. The axles probably weigh 30lbs each, 40lbs at the most, shoes and drums if included will add about 40lbs. I would say in the neighborhood of 300lbs total weight.