Unitized Structural Body Repair Questions and Correct Answers/ Latest Update / Already Graded

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Unitized Structural Body Repair
Questions and Correct Answers/ Latest
Update / Already Graded
Unibody


Ans: Lightweight stamped sheet metal components that are welded to

each other to create a single unit.




Space Frame


Ans: Body panels can be made from plastic are steel. Steel may be Mild,

Intermediate, or HSS. Panels may hide damage to frame or structure.




Crush Zones


Ans: Structural components such as rails are designed to collapse and

bend at specific points.




Collision Energy Management

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Ans: Goal is passenger protection. Front and rear structures act as crush-

able energy absorbers.




Direct Damage


Ans: POI. Easily located and diagnosed.




Indirect Damage


Ans: transmission of collision energy beyond the area of immediate

impact. Examples; Split seam sealers, pulled spot welds, misaligned

panels, buckles in steel, cracked glass, and cracked or chipped paint.




Passive Restraint Systems


Ans: Must have service manual. No two are alike.




Datum


Ans: Imaginary plane or line beneath the vehicle. Measures height.

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Centerline


Ans: Vertical plane that passes from the front of the vehicle to the rear.

Measures Width. May have stamped marks on vehicle body structure. Is

confirmed by referencing at last 3 width measurements in the

undamaged portion of the vehicle.




Zero Planes


Ans: Vertical plane that passes from side to side. Confirmed by measuring

3 length measurements from the undamaged portion of the vehicle.




Symmetry


Ans: Equal on each side of the vehicle.




Asymmetrical


Ans: Unequal on each side of the vehicle. (spare tire well)




Reference Points