BTECH ADVANCED REINFORCED CONCRETE

BAR

tendon can be made up of a single steel bar. Its diameter is

much larger than that of a wire.

CABLE

a group of tendons form a prestressing cable.

TENDON

group of strands or wires are twisted to form a

prestressing tendon.

STRANDS

two, three, or seven wires are twisted to form a

prestressing strand.

WIRES

prestressing wire is a single unit made of steel.

PRE TENSIONING

steel tendons are placed in empty concrete forms and

stretched, before concrete is placed about the tendons and cured;

the tendons are bonded to the concrete and upon their release, part

of the tension is transferred to the concrete as compression.

POST TENSIONG UNBOUNDED PRESTRESSING

loose tendons in

tubing or sheathing embedded in

cured concrete are stretched, or

tendons greased to prevent

adhesion to the concrete during

curing. T

PRESTRESSING

– refers to a

method of compressing concrete >

members so that they do not

deflect when in position, and

both upper and lower sections

of the members remain in

compression

1 INCH PER MINUTES

After the erection of precast columns, each floor slab is cast on the

ground, one on top of the other; after curing, the topmost slab is

hoisted slowly___