Prestressed Quiz 1a

Vertical déviation for unbounded single strand tendons in a 9inch thick post-tension slab should not be more than_____?

• 3/8 INCH

• 1/8

• 1/2

• 1/4

Answer explanation

P.T.I FIELD 4.3.6

P.T.I SPECS. 3.8.2

Prestressing Tendons shall be firmly supported at intervals not exceeding___

• 48 inches

• 42 in

• 36 in

• 30 in

Answer explanation

PTI

SPECS. 3.7.1

In a Two-way post-tensioning slab, not more than ____ 1/2 inch diameter tendons should be banded in a group.

• FIVE

• four

• three

• two

Answer explanation

PTI

FIELD 4.4.15

In a beam and slab system, it is recommended there be ________ clear space between groups of bundled beam tendons.

• 1-1/2 inches

• 2 in.

• 2-1/2 in.

• 3 in.

Answer explanation

PTI

FIELD FIG. 4-8

Tape used for sheathing repair of unbounded single strand tendons should meet all of the following except.

• ^{elastic properties}

  ^{minimum width of 3in.}

  ^{a contrast color to sheathing}

  ^{be self-adhesive}

• ^{elastic properties}

  ^sheathing

  ^{be self-adhesive}

• ^{a contrast color to sheathing}

  ^{be self-adhesvei}

• ^{elastic properties}

Answer explanation

PTI

SPECS. 2.4.3.2

The minimum concrete cover from exterior edge of concrete to wedge cavity area of anchor shall be ______.

• 2 inch

• 1 in.

• 1-1/2 in.

• 2-1/2 in.

Answer explanation

PTI

SPECS. 3.7.5.4

Group of unbounded single strand tendons should be diverted around all small or medium sized openings, they shall have a minimum clearance of _____ from all blackouts.

• 3 inches

• 2 in

• 4 in

• 6 in

Answer explanation

PTI

FIELD FIG. 4-6

Where the tendon enters the stressing end anchor and for the first _______ inside the stressing end anchor the tendon should be straight.

• 12 inches

• 4 in

• 6 in

• 9 in

Answer explanation

PTI

FIELD FIG.4-4

SPECS. 3.7.5.3

Polyethylens sheathing shall have a minimum thickness of _____for all environments

• .050 inch

• .094 in.

• .105 in.

• .030 in.

Answer explanation

PTI

SPECS. 2.3.2

Stressing jacks & gauges shall be calibrated to known standards at intervals not exceeding_____

• 6 MONTHS

• 3 months

• 2 months

• 12 months

Answer explanation

PTI

FIELD 2.5

SPECS. 3.10.4