FRP - Strengthening around slab opening, HowTo?
FRP - Strengthening around slab opening, HowTo?
(OP)
Hi,
Not very familiar with the FRP (carbon) plies. My project is to cut several holes (approx 20"x6") in an existing concrete slab (8" thk) with 15M @ 12" o/c ea. direction.
I will need to add FRP plies around the hole. But what is the methodology, how to approach such problem ?
If I consider that the section that I remove is similar to a beam 8x6 and 20" long and I evaluate the Mu of that beam and then I will figure out what FRP section is equivalent to that beam ? And apply it on the side of the hole. Is that O.K.?
How long the extents of the plies should be ?
thank you for any help,
Not very familiar with the FRP (carbon) plies. My project is to cut several holes (approx 20"x6") in an existing concrete slab (8" thk) with 15M @ 12" o/c ea. direction.
I will need to add FRP plies around the hole. But what is the methodology, how to approach such problem ?
If I consider that the section that I remove is similar to a beam 8x6 and 20" long and I evaluate the Mu of that beam and then I will figure out what FRP section is equivalent to that beam ? And apply it on the side of the hole. Is that O.K.?
How long the extents of the plies should be ?
thank you for any help,






RE: FRP - Strengthening around slab opening, HowTo?
RE: FRP - Strengthening around slab opening, HowTo?
If so, I believe there are fire-rating issues associated with the epoxy bonding agent.
RE: FRP - Strengthening around slab opening, HowTo?
The method for working out the amount of FRP, is not a simple replacement for the reo, you need to check strains ect. As ron says start with sika, then come back if you need some more help. Also Rapt handles FRP these days.
Arguing with an engineer is like wrestling with a pig in mud. After a while you realize that they like it
RE: FRP - Strengthening around slab opening, HowTo?
ACI 440.2R-08 is the design guide you will want to reference.
RE: FRP - Strengthening around slab opening, HowTo?
RE: FRP - Strengthening around slab opening, HowTo?
BA
RE: FRP - Strengthening around slab opening, HowTo?
I found a great design guide with several examples and the slab opening is in it.
For those who are interested, see "FRP Rehabilitation of
Reinforced Concrete Structures" on http://www.isiscanada.com/manuals/manuals.html
see manual 4