Pre-tensioned Members
Pre-tensioned members usually do not have any end anchors, the wires being embedded or bonded within the length of the member.
- Demolish simple pre-tensioned beams and slabs of spans up to about 23 feet (7 meters) in a manner similar to ordinary reinforced concrete.
- Lift and lower pre-tensioned beams and slabs to the ground as complete units after the removing composite concrete covering to tops and ends of the units.
- Turn the members on their sides to facilitate breaking up.
- Lift the structure from points near the ends of the units or from lifting point positions.
- Whenever possible, reuse lifting eyes if they are in good condition.
- When units are too large to be removed, consider temporary supporting arrangements.
Knowledge Check Choose the best answer for the question.
4-4. You should demolish simple pre-tensioned beams and slabs in a manner similar to ordinary reinforced concrete if they're width is under how many feet?
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