lutein
Structural
- Apr 24, 2002
- 136
Hi,
I have an 8" post tensioned slab under construction, the contractor called and stated that the slab anchorage area was blown out, it crushed the concrete slab edge for about 3'x5' area. This happened in 6 hours after stressing.
I have checked the design and it was satisfactory, the end anchorage details were just typical post tensioned slab detail provided by the PT supplier, i.e. backing bars, and some top bars. The reinforcement was inspected by building inspector before pour.
In your professional opinion, what would have caused the slab blow out? Please shed some lights on this, because I am quite nervous under this situation.
Thank you in advance for your kind advice.
I have an 8" post tensioned slab under construction, the contractor called and stated that the slab anchorage area was blown out, it crushed the concrete slab edge for about 3'x5' area. This happened in 6 hours after stressing.
I have checked the design and it was satisfactory, the end anchorage details were just typical post tensioned slab detail provided by the PT supplier, i.e. backing bars, and some top bars. The reinforcement was inspected by building inspector before pour.
In your professional opinion, what would have caused the slab blow out? Please shed some lights on this, because I am quite nervous under this situation.
Thank you in advance for your kind advice.