PC MIDTERMS Flashcards
in prestressed members, the hardware used to transfer force from prestressed reinforcement to the concrete.
ANCHORAGE DEVICE
An anchorage device used with any single strand or a single 16mm or smaller diameter bar
BASIC MONOSTRAND ANCHORAGE DEVICE
An anchorage device used with multiple strands, bars, or wires, or with single bars larger than 16mm diameters
BASIC MULTISTRAND ANCHORAGE DEVICE
An anchorage device that satisfies tests required in Section 425.9.3.1c.
SPECIAL ANCHORAGE DEVICE
in post-tensioned members, the portion of the member through which the concentrated prestressing force is transferred to the concrete and distributed more uniformly across the section; its extent is equal to the largest dimension of the cross section; for anchorage devices located away from the end of a member, the anchorage zone includes the disturbed regions ahead of and behind the anchorage device.
ANCHORAGE ZONE
is a concrete element cast elsewhere than its final position in the structure.
PRECAST CONCRETE
is a conduit, plain or corrugated, to accommodate prestressing reinforcement for post-tensioning applications.
DUCT
is an ability of a structure or member to resist deterioration that impairs performance or limits service life of the structure in the relevant environment considered in design.
DURABILITY
is a distance measured from extreme compression fiber to centroid of tension reinforcement.
EFFECTIVE DEPTH OF SECTION
is a stress remaining in prestressing reinforcement after al losses in Section 420.3.2.6 have occured.
EFFECTIVE PRESTRESS
In prestressed concrete, temporary force exerted by device that introduces tension into prestressing reinforcement.
JACKING FORCE
is a length of frame element over which flexural yielding is intended to occur due to earthquake design displacements, extending not less than a distance h from the critical section where flexural yielding initiates.
PLASTIC HINGE REGION
is a method of prestresing reinforcement in which prestressing reinforcement is tensioned after concrete has harddened.
POST-TENSIONING
is a portion of a prestressed member where flexural tension, calculated using gross section properties, would occur under service loads if the prestress force was not present.
PRECOMPRESSED TENSILE ZONE
is a method of prestressing in which prestressing reinforcement is tensioned before concrete is cast.
PRETENSIONING
is a prestressing reinforcement that has been tensioned to impart forces to concrete.
PRESTRESSED REINFORCEMENT
is a pretensionsed reinforcement or prestressed reinforcement in a bonded tendon.
BONDED PRESTRESSED REINFORCEMENT
is a high-strength reinforcement such as strand, wire, or bar conforming to Section 420.3.1
PRESTRESSING REINFORCEMENT
is a material encasing prestressing reinforcement to prevent bonding of the prestressing reinforcement with the surrounding concrete, to provide corrosion protection, and to contain the corrosion inhibiting coating.
SHEATHING
