huangyhg

roof steel structure
hi,
im a mechanical engineer overseeing a small extension approx 100m2 per floor. ground and first floors. please excuse my minimum knowlege on your topic. the building is for meachnical/process equipment and the structure was to be the simple part, until the builder arrived on site!
the bld extension is a steel frame with colums and beams, seems pretty simple. 6 colums interconnected with beams etc..
the roof has a slight slope as per the design (approx 5 deg i'd say) but where the roof beams connect to the colums the steel guy made no allowance to cut the beamms ends at this angle to give a neat flush beveled finish at the connection plate. now there is a gap to get the slope at the connection and the bolts cannot be tightened 100%.
is this acceptable.? if not what can be done at this late stage. the roof decking is on.
plese help
kind regards remp
tapered shims inserted under the bolt heads or nuts as a replacement for washers.
i agree with civilperson, tapered shims, or in some cases you can get tapered washers if the gap is small enough.
if you have a lot of shear on these then you may consider welding the shims to the column to prevent them slipping.
these are only general comments as we do not know the specific situation, but you should speak to the structural engineer of record for specific instructions.
i am assuming that the precut holes in the connection plate at the column and in the beam web do not line up?
are the lower holes in the beam web rotated up and away from the intended holes in the connection plate?
you could extend the connection plate by welding on an extension such that the holes in the web line up with the new holes in the extended connection plate.

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