Unitized Structural Body Repair Exam Questions With All Correc
Answers
2025 Latest
Update
1. Unibody Lightweight stamped sheet metal components that are welded to each
other to create a single unit.
2. Space Frame Body panels can be made from plastic are steel. Steel may be Mild,
Intermediate, or HSS. Panels may hide damage to frame or structure.
3. Crush Zones Structural components such as rails are designed to collapse and bend
at specific points.
4. Collision Goal is passenger protection. Front and rear structures act as crush-able
Energy
energy absorbers.
Management
5. Direct Damage POI. Easily located and diagnosed.
6. Indirect Damage 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.
7. Passive Must have service manual. No two are alike.
Restraint
Systems
8. Datum Imaginary plane or line beneath the vehicle. Measures height.
9. Centerline 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.
10. Zero Planes Vertical plane that passes from side to side. Confirmed by measuring
3 length measurements from the undamaged portion of the vehicle.
11. Symmetry Equal on each side of the vehicle.
1/
17
, Unitized Structural Body Repair Exam Questions With All Correc
Answers
2025 Latest
Update
12. Asymmetrical Unequal on each side of the vehicle. (spare tire well)
2/
17
, Unitized Structural Body Repair Exam Questions With All Correc
Answers
2025 Latest
Update
13. Reference Points Bolts or nuts, Holes, Mechanical attachment points, Edges of panels,
Door strikers, Corner of openings. Common tolerance is =/.3mm (1/8)
or all the way to 1mm (1.32).
14. Loaded Drivetrain In
Measure-
ments
Drivetrain out
15. Unloaded
Mea-
surements shortest distance between 2 reference points. AKA "as the crow flies". Uses
16. Point to tram or steel tape measure.
Point
Taken at Datum plane, height ditterences between reference points. Laser
Measureme
mea- suring system
nts
compare data stored in a software program or a central database. Get
17. Datum
Measure- hard copy of measurements. Can watch while pulling.
ments
18. Computerize
d Measuring
System
19. Steel Cannot know what kind by visible. Must check service manual.
20. Tensile Strength Amount of pressure/force necessary to fracture or tear steel.
21. Yield Strength Amount of force/pressure necessary to deform steel permanently.
22. PSI Pounds per inch /// tensile and yield strengths are expressed. Higher
the number the stronger the steel.
23. Mild Steel Cosmetic, used on Space frames, May be stressed relieved with heat,
3/
17
Answers
2025 Latest
Update
1. Unibody Lightweight stamped sheet metal components that are welded to each
other to create a single unit.
2. Space Frame Body panels can be made from plastic are steel. Steel may be Mild,
Intermediate, or HSS. Panels may hide damage to frame or structure.
3. Crush Zones Structural components such as rails are designed to collapse and bend
at specific points.
4. Collision Goal is passenger protection. Front and rear structures act as crush-able
Energy
energy absorbers.
Management
5. Direct Damage POI. Easily located and diagnosed.
6. Indirect Damage 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.
7. Passive Must have service manual. No two are alike.
Restraint
Systems
8. Datum Imaginary plane or line beneath the vehicle. Measures height.
9. Centerline 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.
10. Zero Planes Vertical plane that passes from side to side. Confirmed by measuring
3 length measurements from the undamaged portion of the vehicle.
11. Symmetry Equal on each side of the vehicle.
1/
17
, Unitized Structural Body Repair Exam Questions With All Correc
Answers
2025 Latest
Update
12. Asymmetrical Unequal on each side of the vehicle. (spare tire well)
2/
17
, Unitized Structural Body Repair Exam Questions With All Correc
Answers
2025 Latest
Update
13. Reference Points Bolts or nuts, Holes, Mechanical attachment points, Edges of panels,
Door strikers, Corner of openings. Common tolerance is =/.3mm (1/8)
or all the way to 1mm (1.32).
14. Loaded Drivetrain In
Measure-
ments
Drivetrain out
15. Unloaded
Mea-
surements shortest distance between 2 reference points. AKA "as the crow flies". Uses
16. Point to tram or steel tape measure.
Point
Taken at Datum plane, height ditterences between reference points. Laser
Measureme
mea- suring system
nts
compare data stored in a software program or a central database. Get
17. Datum
Measure- hard copy of measurements. Can watch while pulling.
ments
18. Computerize
d Measuring
System
19. Steel Cannot know what kind by visible. Must check service manual.
20. Tensile Strength Amount of pressure/force necessary to fracture or tear steel.
21. Yield Strength Amount of force/pressure necessary to deform steel permanently.
22. PSI Pounds per inch /// tensile and yield strengths are expressed. Higher
the number the stronger the steel.
23. Mild Steel Cosmetic, used on Space frames, May be stressed relieved with heat,
3/
17
