deflected slab/beam
deflected slab/beam
(OP)
Hi guyz!
Has anybody got idea as to how can deflection be reduce of existing slab/beam.
I have a situation where floor system has enough deflections to disturb the servicibility of building.
Has anybody got idea as to how can deflection be reduce of existing slab/beam.
I have a situation where floor system has enough deflections to disturb the servicibility of building.






RE: deflected slab/beam
RE: deflected slab/beam
As few things I am sure we would like to know,
What is the existing slab beam system?
How old is the structure?
How does the slab deflect? do you have a survey of the floor slab?
why is the deflection a problem, do we need to reduce existing deflections?
how many stories?
Because if we go general on a situation like this you will get many different answers but not a lot of help.
case in point my suggestion would be to prop the slab with more columns, but can we added extra columns?
Tell us the constraints, and what size the project, and then we can help maybe a little.
Arguing with an engineer is like wrestling with a pig in mud. After a while you realize that them like it
RE: deflected slab/beam
RE: deflected slab/beam
There was a write up in "New Civil Engineer International" May 2007 issue. I have it with me so I will scan it in and post it tomorrow (I am at home now and don't have access to a scanner). It was a different world back then, everyone had money and wanted to build tall iconic buildings. What a difference 2yrs can make. Is the Burj nearing topping off? It has seem to have fallen away from media attention.
Bazflexure
More information is required, are the deflections excessive in the slab of a flat-plate floor system?
What is the serviceability failure? My building at work has massive curvatures in the floor slab that are noticeable when you walk over them but everyone has seemed to accept them.
RE: deflected slab/beam
thanks for the reply.This is some information about the project.
-office building.Rehabilitation required.
-Floor system is reinforced concrete slab-beam.
-Deflections are due to creep/shrinkage means longterm deflections.
-ofcourse there are few cracks in beams.
-I need to reduce the defections and increase its flexural stiffness/strength.
RE: deflected slab/beam
The link above states that the remeidal work was carried out to all floors even though it was noticed during the construction. They most likely couldn't rectify the remaining floors by increasing the floor depth as the columns and founds wouldn't be able to support the increased dead load.
RE: deflected slab/beam
External stressing is another possibility.
BA
RE: deflected slab/beam
RE: deflected slab/beam
RE: deflected slab/beam
Arguing with an engineer is like wrestling with a pig in mud. After a while you realize that them like it
RE: deflected slab/beam
BA
RE: deflected slab/beam
RE: deflected slab/beam
RE: deflected slab/beam
BA