Dears,
I am designing a composite profile, to AISC360-10) with web depth of 800mm and thickness of 8mm. EtaBs refuses to design a profile that is not compact
according to its design manual:-
"ETABS deems slender-element sections for flexure not acceptable and does not do any further checks...
I was very Engineerly [bigsmile]delighted to read the whole comments.
Now let me tell you why brought this question:-
First I have a pedestrian bridge as shown in the attached that I needed to check for vibration and I have the following problem:-
1) I can't check it according to the...
Guy's,
In CSI ETABS, the walking vibration form data, there is an item called Peak load Factor (default value) = 1.4
Can anyone tell me what is this factor for? and its reference?
Thanks in...
Dears,
I've a steel built-up I girders 60 meter span bridge in which the bottom flange (tension flange) consists of two plates (the main bottom flange 100cmx5cm and a cover plate 80cmx4cm). the bottom flange is compromised of two plate due to a shortage in the local market.
the fabricator...
greetings all,
I can't find any sense in taking a thermal load on the steel structure of Delta T=30 according to code if the whole building is covered by thermal insulation sandwich panel cladding. At least I can reduce the 30 degree effect by choosing a lesser delta t , say 20 degree.
Is there...
SlideruleEra
Forget to add, is the vibration shown in the Vid is a phenomenon that happens often? I mean Did you see such vibration often?
Thanks In advance
SlideruleEra
It is exactly as you described
Vibration measurement as per Ron is not that available
For the beam size its HEA300 and I checked it under the static load provided in the first pdf file I uploaded found safe . the Deflection is 4.8cm
Attached is the structural system of the frame...
Dear Ron
Thank you for prompt response,
It will be difficult to get accelerometers.
I was thinking more about Finite Element Analysis.
And As per the client this vibration was from the beginning. when operated the agitator for This first time , these vibrations were obvious.
Dear All,
A client asked me to check a problem of a vibrating steel structure. The steel structure is two beam 12.00 meters installed over a tank.
these beams carry a Fan and a motor used to agitate a solution. The problem is these beams vibrate vertically as shown in the attached video. also...
Dear All ,
I am using SAP2000 Version 14.1 . I am using A staged-construction and time depended material non linearity. the problem is Multi-layered
shell does not consider the effect of creep; if I switched to normal slab section the effect of creep appears
did anyone face this problem...
Dear Thaidavid40,
attached is a sketch for what I meanhttp://files.engineering.com/getfile.aspx?folder=ab05664c-237c-4407-9b17-a94a04f880ed&file=Welcome_Court_3D_Model_(1).pdf
I can't answer this question at once. I need more details, such as are you going to brace it to R.C wall/column , do you wanted to lean on another system or to make a moment connection, ...etc
Regards
Dear All,
Is there any paper or Ideas of calculating the Concrete modes of failure per ACi-318-Appendix D for an anchorage in the face of a circular column. What I mean by face NOT in a circular cross-section as anchors protruding from concrete pedestal; it is a beam connected to circular...
This is very close to reality but it's in rc beam. I have 4 columns and 3 rows and I am using the hilti design program. but I am sure that the program algorithm doesn't consider this situation. It only assumes that that load is distributed equally on the columns
dear All,
I want to know if the shear force is distributed equally on the bolt columns . That is each column takes an equal share of the shear force . that is P/6 as per attached drawung
and if there is any specs that states so.
Regards...
