mats12
Geotechnical
- Dec 17, 2016
- 181
Well hello!
I have existing concrete slab - it is only 140 mm thick.
Reinforcement is sufficient for self weight only - No top reinforcement, bottom reinforcemenet just sufficient,
I'd like to add screed and other layers on top - so permanent and imposed load will be increased.
Since existing reinforcement is insufficient I am planning to add extra support in the middle - steel beam that is supported on columns and existing walls.
That way my reinforcement at the bottom is still OK after the load is incresed.
I also get one-way slab.
My question - I have no top reinforcement in the middle of the span, but since I intend to add steel beam as support I will get tension in the top zone of the slab (above steel beam).
I was thinking about using FRP straps but I have never worked with it. Is this solution alright since there is no top reinforcement in the slab - so all tension forces are taken care of by FRP? or is there something better that comes to your mind?
Hope for some help.
Bye
EXISTING SLAB:
AFTER ADDING STEEL BEAM AS NEW SUPPORT:
I have existing concrete slab - it is only 140 mm thick.
Reinforcement is sufficient for self weight only - No top reinforcement, bottom reinforcemenet just sufficient,
I'd like to add screed and other layers on top - so permanent and imposed load will be increased.
Since existing reinforcement is insufficient I am planning to add extra support in the middle - steel beam that is supported on columns and existing walls.
That way my reinforcement at the bottom is still OK after the load is incresed.
I also get one-way slab.
My question - I have no top reinforcement in the middle of the span, but since I intend to add steel beam as support I will get tension in the top zone of the slab (above steel beam).
I was thinking about using FRP straps but I have never worked with it. Is this solution alright since there is no top reinforcement in the slab - so all tension forces are taken care of by FRP? or is there something better that comes to your mind?
Hope for some help.
Bye
EXISTING SLAB:
AFTER ADDING STEEL BEAM AS NEW SUPPORT: