Noelrom
Structural
- Aug 6, 2022
- 1
Hello,
Let's say there is a 10 foot long spanned composite slab between two steel beams (not girder) with a 2-foot width fully corroded metal deck in the middle of the span, and it doesn't have reinforcement other than the minimum required WWF. This corrosion extends about 10 feet parallel to beams. 2 feet with X 10 feet length of the composite slab should be removed.
I have two options as below:
1. If the metal deck is cut, composite action between the metal deck and concrete gets released. So I would put the same sized new composite metal deck below the cavity and put metal strips or FRP strips under the existing metal deck between two beams and the lower flute of the new composite metal deck with PAF as needed to resist shear friction and to make them composite section along span direction.
2. It can be repaired by epoxy anchored rebars into both sides of the existing composite slab with splice length, and put form below the cavity and pour concrete. But I don't believe rebar can be spliced with the composite metal deck.
Any input would be very helpful!
Thanks,
Noelrom
Let's say there is a 10 foot long spanned composite slab between two steel beams (not girder) with a 2-foot width fully corroded metal deck in the middle of the span, and it doesn't have reinforcement other than the minimum required WWF. This corrosion extends about 10 feet parallel to beams. 2 feet with X 10 feet length of the composite slab should be removed.
I have two options as below:
1. If the metal deck is cut, composite action between the metal deck and concrete gets released. So I would put the same sized new composite metal deck below the cavity and put metal strips or FRP strips under the existing metal deck between two beams and the lower flute of the new composite metal deck with PAF as needed to resist shear friction and to make them composite section along span direction.
2. It can be repaired by epoxy anchored rebars into both sides of the existing composite slab with splice length, and put form below the cavity and pour concrete. But I don't believe rebar can be spliced with the composite metal deck.
Any input would be very helpful!
Thanks,
Noelrom
