Post-Tensioned Concrete: Key
Concepts and Best Practices Test
Questions and Answers
1 - Reverse curvature of tendons in post-tensioned concrete construction can be avoided by
______________________.
1 - Increasing the psi of the concrete
2 - Increasing the tension in the tendons
3 - Providing additional support bars for the tendons
4 - Providing additional tendons - Answer 3 - Providing additional support bars for the
tendons
Training and Certification of Field Personnel for Unbonded Post-Tensioning Page 37
2 - A watertight cap should be installed on an encapsulated system for post-tensioned concrete
within ______hours after stressing is complete.
1 - 12 hours
2 - 24 hours
3 - 36 hours
4 - 72 hours - Answer 2 - 24 hours
Training and Certification of Field Personnel for Unbonded Post-Tensioning Page 62
3 - Where two or more extensions of the stressing jack are required to achieve the required
elongation for post-tensioned concrete, the final pull on the jack should not exceed
_____________%.
1 - 15
2 - 60
3 - 75
4 - 80 - Answer 2 - 60
Training and Certification of Field Personnel for Unbonded Post-Tensioning Page 48
4 - Tendons in post-tensioned concrete should not be stressed until the concrete has reached
about ________% of its full strength.
1 - 60
2 - 65
3 - 75
, 4 - 80 - Answer 3 - 75
Training and Certification of Field Personnel for Unbonded Post-Tensioning Page 8
5 - A minimum clearance of _________inches should be maintained around all block outs in
post-tensioned construction.
1 - 4 inches
2 - 6 inches
3 - 8 inches
4 - 12 inches - Answer 2 - 6 inches
Training and Certification of Field Personnel for Unbonded Post-Tensioning Page 34
6 - If a tendon is stressed at both ends, what is the recommended length of tail to leave outside
the edge form at each end?
1 - 6 inches
2 - 8 inches
3 - 10 inches
4 - 12 inches - Answer 4 - 12 inches
Training and Certification of Field Personnel for Unbonded Post-Tensioning Page 32
7 - When back stressing a barrier cable, the end anchor should be installed to a force of ___%
1 - 50 %
2 - 60 %
3 - 75 %
4 - 80 % - Answer 4 - 80 %
Training and Certification of Field Personnel for Unbonded Post-Tensioning Page 67
8 - Not more than _______ 0.5 inch diameter tendons should be banded together in a group in
post-tensioned concrete.
1-3
2-4
3-5
4 - 6 - Answer 3-5
Training and Certification of Field Personnel for Unbonded Post-Tensioning Page 34
Concepts and Best Practices Test
Questions and Answers
1 - Reverse curvature of tendons in post-tensioned concrete construction can be avoided by
______________________.
1 - Increasing the psi of the concrete
2 - Increasing the tension in the tendons
3 - Providing additional support bars for the tendons
4 - Providing additional tendons - Answer 3 - Providing additional support bars for the
tendons
Training and Certification of Field Personnel for Unbonded Post-Tensioning Page 37
2 - A watertight cap should be installed on an encapsulated system for post-tensioned concrete
within ______hours after stressing is complete.
1 - 12 hours
2 - 24 hours
3 - 36 hours
4 - 72 hours - Answer 2 - 24 hours
Training and Certification of Field Personnel for Unbonded Post-Tensioning Page 62
3 - Where two or more extensions of the stressing jack are required to achieve the required
elongation for post-tensioned concrete, the final pull on the jack should not exceed
_____________%.
1 - 15
2 - 60
3 - 75
4 - 80 - Answer 2 - 60
Training and Certification of Field Personnel for Unbonded Post-Tensioning Page 48
4 - Tendons in post-tensioned concrete should not be stressed until the concrete has reached
about ________% of its full strength.
1 - 60
2 - 65
3 - 75
, 4 - 80 - Answer 3 - 75
Training and Certification of Field Personnel for Unbonded Post-Tensioning Page 8
5 - A minimum clearance of _________inches should be maintained around all block outs in
post-tensioned construction.
1 - 4 inches
2 - 6 inches
3 - 8 inches
4 - 12 inches - Answer 2 - 6 inches
Training and Certification of Field Personnel for Unbonded Post-Tensioning Page 34
6 - If a tendon is stressed at both ends, what is the recommended length of tail to leave outside
the edge form at each end?
1 - 6 inches
2 - 8 inches
3 - 10 inches
4 - 12 inches - Answer 4 - 12 inches
Training and Certification of Field Personnel for Unbonded Post-Tensioning Page 32
7 - When back stressing a barrier cable, the end anchor should be installed to a force of ___%
1 - 50 %
2 - 60 %
3 - 75 %
4 - 80 % - Answer 4 - 80 %
Training and Certification of Field Personnel for Unbonded Post-Tensioning Page 67
8 - Not more than _______ 0.5 inch diameter tendons should be banded together in a group in
post-tensioned concrete.
1-3
2-4
3-5
4 - 6 - Answer 3-5
Training and Certification of Field Personnel for Unbonded Post-Tensioning Page 34
