Designed, manufactured, and approved according to IAAF Regulations.
The cage is made up of 5 vertical uprights whose position on the ground defines the shape of the cage to match the regulatory dimensions. The posts are made from an extruded aluminum profile with a circular section of 120 mm in diameter and have a groove in which the different auxiliary elements of the post are fixed: the net lifting winch and the deflection pulleys. A steel reinforcement including the ground fixing plate is inserted at the lower end of each post.
The posts are inserted into PVC ground sleeves (not supplied) which must be incarcerated in the corresponding concrete footings.
The net (not included) is lowered by means of plastic hooks from a series of extruded aluminum profiles with a square section of 80 mm on each side that are connected to each other. This set of profiles is called “upper U-shaped frame,” and it has 5 hanging points that correspond to the 5 poles of the cage. At each of these points a towrope is hooked and wound on the winch of the corresponding post. The coordinated action of the five winches results in the elevation of the upper U-shaped frame and therefore the net.
At ground level, the net is attached to the lower U-shaped steel frame, which is fitted with metal hooks for this purpose. This lower U-shaped frame incorporates elements to connect the posts, preventing the U-shaped net frame assembly from swinging because of the throwing disc impact.
IMPORTANT NOTE: The cage has been designed to withstand an average wind speed of up to 60km/h. Over this speed limit, the net must be lowered to ground level.