What are the dimensions of a basketball goal?

A well constructed basketball goal may have one or two rings. The double ring system is very rigid and durable, using a 3/4" top ring welded to a 5/8" bottom

ring, with a net retention system added. Single ring systems utilize a single 5/8"

high tensile steel ring with a added net retention system. Both systems have added welded ring support. The inside diameter of a standard ring is 18" and the

goal is anchored to the backboard in a manner that allows the goal to breakaway

when overloaded to prevent serious accidents. Standard placement of the goal

is commonly 10' above and perpendicular to the floor below. Goals are equipped

with some form of netting designed to check the balls velocity and direction.