what is the standard size for weight bar
Commercial fitness centers typically don't use standard barbells because they don't hold as much weight as an Olympic barbell, but they are convenient for home gyms because they don't take up as much space. A standard barbell is usually between 5 and 6 feet long and about 1-inch thick the entire length of the bar. The weight of the bar varies among models, but is typically between 15 and 25 lbs.