PTI Level 1 Study Guide
Add Tendons - Answer Tendons usually short in length placed in specific locations, such as
end bays, to increase the uplift force at that location
back-up bars - Answer Reinforcing steel used to control the tensile splitting forces in the
concrete resulting from the concentrated anchor force developed by the stressed tendons.
Banded Tendons - Answer Group(s) of closely spaced tendons placed together in a narrow
strip usually along a column line.
Bearing Plate - Answer A metal plate which bears directly against concrete and is part of an
overall anchorage system
coupler - Answer a device that connects two things
Elongation - Answer The fractional increase in a material's length due to stress in tension or
thermal expansion.
Encapsulated System - Answer A system which provides watertight connections at all
stressing, intermediate, and fixed ends, and provides a watertight enclosure of the wedge cavity
and prestressing steel.
Friction Loss - Answer the loss of force in a tendon due to a wobble
Jacking Force - Answer The maximum temporary force exerted by the jack while stressing a
tendon
kip - Answer A unit of weight equal to 1000 pounds.
MUTS - Answer Minimum breaking strength of a strand.
Post-tensioning - Answer The stressing of unbounded tendons after concrete has cured
prestressed concrete - Answer Concrete that has been pretensioned or posttensioned.
profile - Answer the path a tendon follows
Add Tendons - Answer Tendons usually short in length placed in specific locations, such as
end bays, to increase the uplift force at that location
back-up bars - Answer Reinforcing steel used to control the tensile splitting forces in the
concrete resulting from the concentrated anchor force developed by the stressed tendons.
Banded Tendons - Answer Group(s) of closely spaced tendons placed together in a narrow
strip usually along a column line.
Bearing Plate - Answer A metal plate which bears directly against concrete and is part of an
overall anchorage system
coupler - Answer a device that connects two things
Elongation - Answer The fractional increase in a material's length due to stress in tension or
thermal expansion.
Encapsulated System - Answer A system which provides watertight connections at all
stressing, intermediate, and fixed ends, and provides a watertight enclosure of the wedge cavity
and prestressing steel.
Friction Loss - Answer the loss of force in a tendon due to a wobble
Jacking Force - Answer The maximum temporary force exerted by the jack while stressing a
tendon
kip - Answer A unit of weight equal to 1000 pounds.
MUTS - Answer Minimum breaking strength of a strand.
Post-tensioning - Answer The stressing of unbounded tendons after concrete has cured
prestressed concrete - Answer Concrete that has been pretensioned or posttensioned.
profile - Answer the path a tendon follows
