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F.5.6.1 The Front Hoop must be constructed of closed section metal tubing meeting F.3.2.1.c
F.5.6.2 With proper Triangulation, the Front Hoop may be fabricated from more than one piece of tubing.
F.5.6.3 The Front Hoop must extend from the lowest Frame Member on one side of the Frame, up, over and down to the lowest Frame Member on the other side of the Frame.
F.5.6.4 The top-most surface of the Front Hoop must be no lower than the top of the steering wheel in any angular position. See figure following F.5.8.6 below
F.5.6.5 The Front Hoop must be no more than 250 mm forward of the steering wheel.
This distance is measured horizontally, on the vehicle centerline, from the rear surface of the Front Hoop to the forward most surface of the steering wheel rim with the steering in the straight ahead position.
F.5.6.6 In side view, the Front Hoop or any part of it must be inclined no more than 20° from the vertical.