Post Tension Floor Sytem Flashcards
Why are all reinforcing steel, tendons and all other in-beds securely fastened in the slab system?
So that their position remains unchanged during the concrete placement.
All rebar is to have a minimum _________ inches of clearance on all sides to allow for full concrete encasement.
1 1/2”
Tendons are to be supported by the appropriate ___________ chair for the thickness of the slab.
Height
How are chairs to be secured to tendons?
Tie wire on each chair
Chairs are to be placed at each _________ _____________.
Tendon intersection
Chairs are to be placed halfway between intersections were the tendon spacing exceeds _______ feet ______ inches.
4’6”
Tendons are to be within ______ to ______ inches from any corner of the slab.
6” - 12”
Tendons are to maintain a minimum of _______ inches of clearance from all boxes, vents, conduits, etc.
3”
At the stressing ends, the tendons are to extend a minimum of ________ inches past the edge of the form board
16”
At the anchor end of the tendon, there should be a maximum of ______ inch(s) of bare strand exposed behind the anchor.
1”
At the fixed end of the tendon, there should be approximately _______ to _________ inches of bare strand exposed behind the anchor.
10” - 12”
The tendon sheathing is not to be ____________ or _____________ . Repair as needed.
Torn
Damaged
Horizontal deviations of the tendons are not to exceed ________ inches for every _______ feet in length.
12”
12’
Vertical deviations of the tendons are not to exceed ______ inch for slabs _______ inches thick or less.
1/2”
5”
