The rickhouse had a storage capacity of about 20,000 barrels .
The rickhouse contained about 18,000 barrels when the first collapse occurred , with each barrel having a capacity of 53 US gallons ( 200 L ) .
The rickhouse had a storage capacity of about 20,000 barrels , and contained about 18,000 barrels when the first collapse occurred , with each barrel having a capacity of 53 US gallons ( 200 L ) .