Rationalizing composite slab penetrations
Rationalizing composite slab penetrations
(OP)
Let's say I have a partially composite slab (6" slab/2" deck) system which the contractor would like to turn into swiss cheese (ok that might be a slight exaggeration, but they would like to install a number of ~8" dia holes). My latest rationalization has been to reduce the effective flange width locally by utilizing a deeper section of the slab (depths of the compression block for the composite section are typically less than 3/4" for the affected beams). As long as I am not changing the net effective area of concrete available for compression, the net section properties should remain relatively unchanged (technically, the d distance for the compression block is reduced, but initial thoughts are that this is relatively insignificant for the affected sections). This way, I can keep the holes closer to the desired location and keep the architect happy (or maybe the interior designer is running the show now). Thoughts? What am I missing?






RE: Rationalizing composite slab penetrations
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: Rationalizing composite slab penetrations
http://msc.aisc.org/globalassets/modern-steel/arch...
RE: Rationalizing composite slab penetrations
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.