South Carolina Post-Tensioning Installer
Certification License Exam Practice
Questions And Correct Answers
(Verified Answers) Plus Rationale 2026
Q&A| Instant Download Pdf
1. In post-tensioning (PT) applications, what is the primary purpose of the
stressing anchor?
A. To provide aesthetic alignment of tendons
B. To secure the tendon and transfer tensile forces to the concrete
C. To house the grout injection port only
D. To facilitate concrete placement around tendons
Rationale: A stressing anchor in PT systems is designed to grip the
tendon and transfer the induced tensile force into the concrete after
jacking, ensuring effective prestress application.
2. What is the minimum clear cover required over a post-tensioning
tendon in a cast-in-place slab exposed to exterior conditions?
A. 1 inch
B. 1.5 inches
C. 2 inches
D. 2.5 inches
Rationale: Code requirements typically mandate a minimum 2-inch
clear cover for PT tendons in exterior conditions to protect against
corrosion and environmental exposure.
,3. Which of the following describes the dead load deflection in a PT slab?
A. Immediate elastic shortening from prestressing force only
B. Deflection under self-weight prior to any live load application
C. Deflection only due to live loads
D. Deflection caused by temperature changes
Rationale: Dead load deflection refers to the downward movement
of the slab under its own weight before any additional applied loads.
4. What is the acceptable range for grout slump when properly mixed for
post-tensioning ducts?
A. 4–6 inches
B. 8–10 inches
C. 10–12 inches
D. 14–16 inches
Rationale: Grout slump of 10–12 inches ensures adequate flow and
duct filling without segregation or excessive bleeding.
5. Which cleaning method is recommended for unbonded tendons prior
to stressing?
A. Dry brushing only
B. Acid wash
C. Compressed air blow-out
D. Water flush without drying
Rationale: Blowing out ducts with compressed air removes debris
and moisture effectively, preparing the tendon duct for accurate
stressing.
6. What is the primary function of a PT coupler?
A. To splice reinforcing bars
B. To connect two lengths of tendon for continuity
C. To house the corrosion inhibitor
D. To align ducts before grouting
, Rationale: A PT coupler joins continuous lengths of tendon to achieve
the required overall length without loss of prestressing force.
7. During stressing, what should the installer verify about the jack and
reaction system?
A. That the jack is level
B. That the reaction system is properly braced and stable
C. That the anchor nuts are loose
D. That grout tubes are attached
Rationale: Proper bracing of the reaction system prevents movement
that could compromise stressing accuracy or safety.
8. What is the typical unit used to specify tendon force in
post-tensioning?
A. Pounds per square inch
B. Newton-meters
C. Kips
D. Inches
Rationale: Prestressing force in PT tendons is commonly specified in
kips, reflecting the axial force applied.
9. Which of the following is a consequence of insufficient grout pressure
during injection?
A. Excessive duct expansion
B. Voids within the duct leading to corrosion risk
C. Increased tendon duct deflection
D. Over-saturation of concrete
Rationale: Low grout pressure can result in incomplete filling of ducts
and entrapment of air pockets, increasing corrosion potential.
10. The purpose of the PT duct end cap is to:
A. Provide a stress relief point
B. Seal the duct during grouting and protect the tendon end
Certification License Exam Practice
Questions And Correct Answers
(Verified Answers) Plus Rationale 2026
Q&A| Instant Download Pdf
1. In post-tensioning (PT) applications, what is the primary purpose of the
stressing anchor?
A. To provide aesthetic alignment of tendons
B. To secure the tendon and transfer tensile forces to the concrete
C. To house the grout injection port only
D. To facilitate concrete placement around tendons
Rationale: A stressing anchor in PT systems is designed to grip the
tendon and transfer the induced tensile force into the concrete after
jacking, ensuring effective prestress application.
2. What is the minimum clear cover required over a post-tensioning
tendon in a cast-in-place slab exposed to exterior conditions?
A. 1 inch
B. 1.5 inches
C. 2 inches
D. 2.5 inches
Rationale: Code requirements typically mandate a minimum 2-inch
clear cover for PT tendons in exterior conditions to protect against
corrosion and environmental exposure.
,3. Which of the following describes the dead load deflection in a PT slab?
A. Immediate elastic shortening from prestressing force only
B. Deflection under self-weight prior to any live load application
C. Deflection only due to live loads
D. Deflection caused by temperature changes
Rationale: Dead load deflection refers to the downward movement
of the slab under its own weight before any additional applied loads.
4. What is the acceptable range for grout slump when properly mixed for
post-tensioning ducts?
A. 4–6 inches
B. 8–10 inches
C. 10–12 inches
D. 14–16 inches
Rationale: Grout slump of 10–12 inches ensures adequate flow and
duct filling without segregation or excessive bleeding.
5. Which cleaning method is recommended for unbonded tendons prior
to stressing?
A. Dry brushing only
B. Acid wash
C. Compressed air blow-out
D. Water flush without drying
Rationale: Blowing out ducts with compressed air removes debris
and moisture effectively, preparing the tendon duct for accurate
stressing.
6. What is the primary function of a PT coupler?
A. To splice reinforcing bars
B. To connect two lengths of tendon for continuity
C. To house the corrosion inhibitor
D. To align ducts before grouting
, Rationale: A PT coupler joins continuous lengths of tendon to achieve
the required overall length without loss of prestressing force.
7. During stressing, what should the installer verify about the jack and
reaction system?
A. That the jack is level
B. That the reaction system is properly braced and stable
C. That the anchor nuts are loose
D. That grout tubes are attached
Rationale: Proper bracing of the reaction system prevents movement
that could compromise stressing accuracy or safety.
8. What is the typical unit used to specify tendon force in
post-tensioning?
A. Pounds per square inch
B. Newton-meters
C. Kips
D. Inches
Rationale: Prestressing force in PT tendons is commonly specified in
kips, reflecting the axial force applied.
9. Which of the following is a consequence of insufficient grout pressure
during injection?
A. Excessive duct expansion
B. Voids within the duct leading to corrosion risk
C. Increased tendon duct deflection
D. Over-saturation of concrete
Rationale: Low grout pressure can result in incomplete filling of ducts
and entrapment of air pockets, increasing corrosion potential.
10. The purpose of the PT duct end cap is to:
A. Provide a stress relief point
B. Seal the duct during grouting and protect the tendon end
