Almost all of the goals involved in these tipovers appeared to be home-made by high school shop classes, custodial members, or local welders, not professionally manufactured. These home-made goals are often very heavy and unstable. The majority of movable soccer goals are constructed of metal, typically weighing 150-500 pounds. The serious injuries and deaths are a result of blunt force trauma to the head, neck, chest, and limbs of the victims. In most cases this occurred when the goal tipped or was accidentially tipped onto the victim.
High winds can also cause movable soccer goals to fall over.
They may be square, rectangular, round. While a movable soccer goal appears to be a simple structure, a correctly designed goal is carefully constructed with counterbalancing measures incorporated into the product. The stability of a soccer goal depends on several factors. A second design selects lightweight materials for the goal s front posts and crossbar and provides much heavier materials for the rear ground bar and frame members. This tends to counterbalance the forces working to tip the goal forward.