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...
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...
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 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...
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...
We are Designing a two separate building one R.C and the other is steel. What I mean by separate they are not structurally or architecturally connected. the R.C is 4 floors and the steel is the same. I want to make the R.C building Supports the steel building laterally. and of coarse there is...
Dear All,
I've been more than 15 years as a structural engineer; now I have a different job where I will go in the site technical office w to approve material submitals.
to Explain, the contractor brings the brands documentation for say, bolts, screws, steel elements, and their data sheet...
Dear All,
Can anyone tell me when to design the concrete inserts with PCI or ACI318 appendix D?
Which of them is more common/credible in anchorage design.
me question rises from the fact I found a difference in calculation of shear capacity when shear is parallel to edge
Regards
Dear All,
I've the following problem,
the contractor fabricated the steel I-girders of a bridge , in which the shop-flange welded splice happened to lie in the bolted splice. that is between the bolts
is there any specs that prohibits such incident
Refer attached drawing
thanks in...
Dear all,
I am a consultant structural Engineer. and now we have job or revising many steel bridges;a newly designed ones and those already in action.
I need to know how to become or to Have the Feel/knowledge/Experiences of knowing:
the poor quality weld from the good ones/ the cause/ what...
Dear all,
I've posted this thread in "STR engineering and other topics" and I had no Response
So Iam posting it again here since this forum is dedicated for SAP2000; hopefully I might get any response.
I have the following problem. I am trying to find the buckling load for the beam in...
Dear all,
I have the following problem. I am trying to find the buckling load for the beam in attached SAP file. The following are the strange results I’ve got:
Eigen Value buckling (buckling analysis) = 39X1 tons
P-Delta Non-linear analysis = 9 tons
P-Delta + large displacement Non-linear...
Dear All,
Does anyone know what is the Structural/physical meaning of Coupled and Uncoupled Stiffness. I found it in the Stiffness of Link element in SAP2000
Thanks in advance
Dear All,
Is there is any welding restriction/specification for the weld detail shown in det-a in the attached file
thanks in advance
http://files.engineering.com/getfile.aspx?folder=c3fb942b-948f-4b8e-81c8-13315a55a159&file=det_a.pdf
Dear All,
I am facing a structural problem right now. I’ve designed a very simple steel portal frame 8meters height and 5meters span which is strength/deflection very safe by the way. When someone rides the roof near to it and pushes it with his feat it vibrates/ sway/ oscillate, whatever you...
Hi everyone,
I need to design a steel structure to resist the impact of a 7500kg truck running with a velocity of 80KPH.
please not the formula F.d= 1/2M.v2 will give extreme high forces .
can anyone know any practice/code for such design
regards
I am Reviewing an Existing steel bridge. the Bridge is very skew, average Span = 40meters, main girder depth = 2.00meters and you can say NO cross-girders.
My questions are:
1-is there is any specs about the analysis/design of such bridge with No cross-beams
2-I run the normal grillage analysis...
