PTI Level 1 & 2 Exam
1. Always use a 2x4 for a reference point device when marking the tendons for
measuring elongations. This way if you lose it, you can just grab another 2x4 off the job
site.
a. True
b. False - CORRECT ANSWER-b. False
2. During the stressing operation two of the tendons in a beam measure 12% shorter
than calculated elongation shown on the approved post tensioning installation drawings.
You should...
a. Stress the next two beam tendons to 70% MUTS instead of 80%
b. De-tension these two tendons and re-stress them.
c. Record the elongations as measured and ascertain what is causing the overage
before continuing to stress additional tendons.
d. None of the above. - CORRECT ANSWER-c. Record the elongations as measured
and ascertain what is causing the overage before continuing to stress additional
tendons.
3. When stressing a tendon with two stressing ends, you should proceed as outlined:
a. Properly hand seat wedges in both ends; apply the elongation reference mark to both
ends; stress one end to full gauge pressure; stress the other end to full gauge pressure;
record elongations from both ends and add them together to get a total elongation for
the tendon.
b. Properly hand seat wedges in both ends; apply the elongation mark to both ends;
stress one end to full gauge pressure; check to see if the elongation falls within required
tolerance, if so, record it and you are done, if not, stress the other end to full gauge
pressure, record elongations from both ends and add them together to get a total
elongation for the tendon.
c. Properly hand seat wedges in both ends; apply the elongation reference marks to
both ends; stress one end to 50% of the gauge pressure; stress the other end to 50% of
gauge pressure; record elon - CORRECT ANSWER-a. Properly hand seat wedges in
both ends; apply the elongation reference mark to both ends; stress one end to full
gauge pressure; stress the other end to full gauge pressure; record elongations from
both ends and add them together to get a total elongation for the tendon.
4. In an encapsulated system, how much bare strands is acceptable behind stressing
anchorage?
, a. None
b. ½" maximum
c. 6" maximum
d. It does not matter. - CORRECT ANSWER-a. None
5. Longitudinal cracking of wedges may occur and is acceptable as a result of wedges
moving to their final wedge set position.
a. True
b. False - CORRECT ANSWER-a. True
6. What should be done when the beam stirrup spacing does not match the PT support
bar spacing?
a. Move the support bar to the nearest stirrup location and adjust the vertical height so
that a smooth tendon profile is maintained, add additional support bars at other stirrup
locations if needed so a maximum allowable support spacing is not exceeded.
b. Change the spacing of the beam stirrup to match the support bar spacing.
c. Do not proceed with installation until further instructions are received.
d. None of the above. - CORRECT ANSWER-a. Move the support bar to the nearest
stirrup location and adjust the vertical height so that a smooth tendon profile is
maintained, add additional support bars at other stirrup locations if needed so a
maximum allowable support spacing is not exceeded.
7. When installing tendons in a narrow joist:
a. It is important to avoid excessive wobble in tendons that could lead to concrete
blowouts.
b. Tendon placement is not critical since there is only one tendon in each joist.
c. It is important to check for any reverse curvature in a tendon profile to avoid
problems.
d. Both A and C. - CORRECT ANSWER-a. It is important to avoid excessive wobble in
tendons that could lead to concrete blowouts.
8. Of the following, what is the most important thing a contractor must do when field
installing a fixed-end anchor?
a. Firmly hammer the wedges into the back of the anchor.
b. Grease the wedges before installing them in the anchor to reduce friction.
c. Stress the anchor to the full required jacking force.
d. None of the above. - CORRECT ANSWER-d. None of the above.
9. The hydraulic pump can be interchanged without re-calibrating the stressing
equipment.
a. True
1. Always use a 2x4 for a reference point device when marking the tendons for
measuring elongations. This way if you lose it, you can just grab another 2x4 off the job
site.
a. True
b. False - CORRECT ANSWER-b. False
2. During the stressing operation two of the tendons in a beam measure 12% shorter
than calculated elongation shown on the approved post tensioning installation drawings.
You should...
a. Stress the next two beam tendons to 70% MUTS instead of 80%
b. De-tension these two tendons and re-stress them.
c. Record the elongations as measured and ascertain what is causing the overage
before continuing to stress additional tendons.
d. None of the above. - CORRECT ANSWER-c. Record the elongations as measured
and ascertain what is causing the overage before continuing to stress additional
tendons.
3. When stressing a tendon with two stressing ends, you should proceed as outlined:
a. Properly hand seat wedges in both ends; apply the elongation reference mark to both
ends; stress one end to full gauge pressure; stress the other end to full gauge pressure;
record elongations from both ends and add them together to get a total elongation for
the tendon.
b. Properly hand seat wedges in both ends; apply the elongation mark to both ends;
stress one end to full gauge pressure; check to see if the elongation falls within required
tolerance, if so, record it and you are done, if not, stress the other end to full gauge
pressure, record elongations from both ends and add them together to get a total
elongation for the tendon.
c. Properly hand seat wedges in both ends; apply the elongation reference marks to
both ends; stress one end to 50% of the gauge pressure; stress the other end to 50% of
gauge pressure; record elon - CORRECT ANSWER-a. Properly hand seat wedges in
both ends; apply the elongation reference mark to both ends; stress one end to full
gauge pressure; stress the other end to full gauge pressure; record elongations from
both ends and add them together to get a total elongation for the tendon.
4. In an encapsulated system, how much bare strands is acceptable behind stressing
anchorage?
, a. None
b. ½" maximum
c. 6" maximum
d. It does not matter. - CORRECT ANSWER-a. None
5. Longitudinal cracking of wedges may occur and is acceptable as a result of wedges
moving to their final wedge set position.
a. True
b. False - CORRECT ANSWER-a. True
6. What should be done when the beam stirrup spacing does not match the PT support
bar spacing?
a. Move the support bar to the nearest stirrup location and adjust the vertical height so
that a smooth tendon profile is maintained, add additional support bars at other stirrup
locations if needed so a maximum allowable support spacing is not exceeded.
b. Change the spacing of the beam stirrup to match the support bar spacing.
c. Do not proceed with installation until further instructions are received.
d. None of the above. - CORRECT ANSWER-a. Move the support bar to the nearest
stirrup location and adjust the vertical height so that a smooth tendon profile is
maintained, add additional support bars at other stirrup locations if needed so a
maximum allowable support spacing is not exceeded.
7. When installing tendons in a narrow joist:
a. It is important to avoid excessive wobble in tendons that could lead to concrete
blowouts.
b. Tendon placement is not critical since there is only one tendon in each joist.
c. It is important to check for any reverse curvature in a tendon profile to avoid
problems.
d. Both A and C. - CORRECT ANSWER-a. It is important to avoid excessive wobble in
tendons that could lead to concrete blowouts.
8. Of the following, what is the most important thing a contractor must do when field
installing a fixed-end anchor?
a. Firmly hammer the wedges into the back of the anchor.
b. Grease the wedges before installing them in the anchor to reduce friction.
c. Stress the anchor to the full required jacking force.
d. None of the above. - CORRECT ANSWER-d. None of the above.
9. The hydraulic pump can be interchanged without re-calibrating the stressing
equipment.
a. True
