10 Questions
What is the maximum distance allowed below the endpoints of the roll hoop for any part of the primary structure in the mentioned plane?
Less than 30 mm
When roll hoops are attached to a composite primary structure, where must the lower roll hoop tubing attachment points be located?
Within 50 mm of the endpoints of the roll hoop
What is the minimum thickness required for mounting plates welded to the roll hoops, based on the roll hoop material?
2 mm thick steel or 3 mm thick aluminum
What is a requirement related to the construction of the main hoop according to T3.8.1?
Continuous, closed section steel tubing
In the side view, what is the maximum inclination allowed for the portion of the main hoop above its upper attachment point to the side impact structure?
Around 10° from vertical
According to the rules, what is the maximum allowable rearward inclination of any portion lower than the upper attachment point to the side impact structure in the side view?
10 degrees
Which of the following statements about the front hoop is true?
If made from multiple aluminum profiles, the yield strength must be considered in the as-welded condition unless properly heat treated.
According to the rules, what is the minimum included angle formed by the main hoop and the main hoop braces?
30 degrees
Which of the following statements about the main hoop bracing is false?
In the side view, the main hoop and the main hoop braces must lie on the same side of a vertical line coincident with the top of the main hoop.
According to the rules, what is required for fully laminating the front hoop to the monocoque?
The hoop must be encapsulated with laminate around its whole circumference, and the laminate must overlap by at least 25 mm on each side with the same lay-up as the laminate it is connecting to.
Test your knowledge on FIA regulation T3.7.4 which states the requirements for roll hoops in vehicles, including attachment points and permissible locations. This quiz covers the regulations related to roll hoops in composite primary structures.
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