Unitized Structural Body Repair Exam
Questions and Answers:2025/2026
Computerized Measuring System - CORRECT ANSWER-compare data stored in a software program or a
central database. Get hard copy of measurements. Can watch while pulling.
Steel - CORRECT ANSWER-Cannot know what kind by visible. Must check service manual.
Tensile Strength - CORRECT ANSWER-Amount of pressure/force necessary to fracture or tear steel.
Yield Strength - CORRECT ANSWER-Amount of force/pressure necessary to deform steel permanently.
PSI - CORRECT ANSWER-Pounds per inch /// tensile and yield strengths are expressed. Higher the
number the stronger the steel.
, Mild Steel - CORRECT ANSWER-Cosmetic, used on Space frames, May be stressed relieved with heat,
tears can be welded without a loss of strength. Yield strength 30,000 PSI
Intermediate Steel - CORRECT ANSWER-Yield strength 30,000-70,000 PSI, structural and cosmetic, may
be affected by excessive heat, small tears can be welded w/o loss of strength.
High Strength Steel (HSS) - CORRECT ANSWER-Yield strength between 30,000-100,000 PSI, used in
cosmetic and structural, is destroyed by exceeding temperature or time limits, should be replaced if
kinked or torn excess of 1/4 inch, should be straightened cold whenever possible.
Ultra High Strength Steel (UHSS) - CORRECT ANSWER-Very high yield strength exceeding 100,000 PSI,
must never be repaired, door intrusion beams and re-bars.
MIG/GMAW Welding - CORRECT ANSWER-
Unibody - CORRECT ANSWER-Lightweight stamped sheet metal components that are welded to each
other to create a single unit.
Space Frame - CORRECT ANSWER-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 - CORRECT ANSWER-Structural components such as rails are designed to collapse and
bend at specific points.
Collision Energy Management - CORRECT ANSWER-Goal is passenger protection. Front and rear
structures act as crush-able energy absorbers.
Direct Damage - CORRECT ANSWER-POI. Easily located and diagnosed.
Indirect Damage - CORRECT ANSWER-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.
Questions and Answers:2025/2026
Computerized Measuring System - CORRECT ANSWER-compare data stored in a software program or a
central database. Get hard copy of measurements. Can watch while pulling.
Steel - CORRECT ANSWER-Cannot know what kind by visible. Must check service manual.
Tensile Strength - CORRECT ANSWER-Amount of pressure/force necessary to fracture or tear steel.
Yield Strength - CORRECT ANSWER-Amount of force/pressure necessary to deform steel permanently.
PSI - CORRECT ANSWER-Pounds per inch /// tensile and yield strengths are expressed. Higher the
number the stronger the steel.
, Mild Steel - CORRECT ANSWER-Cosmetic, used on Space frames, May be stressed relieved with heat,
tears can be welded without a loss of strength. Yield strength 30,000 PSI
Intermediate Steel - CORRECT ANSWER-Yield strength 30,000-70,000 PSI, structural and cosmetic, may
be affected by excessive heat, small tears can be welded w/o loss of strength.
High Strength Steel (HSS) - CORRECT ANSWER-Yield strength between 30,000-100,000 PSI, used in
cosmetic and structural, is destroyed by exceeding temperature or time limits, should be replaced if
kinked or torn excess of 1/4 inch, should be straightened cold whenever possible.
Ultra High Strength Steel (UHSS) - CORRECT ANSWER-Very high yield strength exceeding 100,000 PSI,
must never be repaired, door intrusion beams and re-bars.
MIG/GMAW Welding - CORRECT ANSWER-
Unibody - CORRECT ANSWER-Lightweight stamped sheet metal components that are welded to each
other to create a single unit.
Space Frame - CORRECT ANSWER-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 - CORRECT ANSWER-Structural components such as rails are designed to collapse and
bend at specific points.
Collision Energy Management - CORRECT ANSWER-Goal is passenger protection. Front and rear
structures act as crush-able energy absorbers.
Direct Damage - CORRECT ANSWER-POI. Easily located and diagnosed.
Indirect Damage - CORRECT ANSWER-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.
