Recent content by cecil123

I have a concrete filled hollow steel section incorporating an I section inside it. Now, I want to determine the temperature distribution throughout the section when the column is heated on all 4 sides for a rating R60 (6o minutes duration of fire) I do not want to take up FE thermal analysis...

Is it anyways related to the difference in thermal conductivity between steel and concrete?Because steel has very high thermal conductivity and concrete comparatively low?

Let us say i have a composite column section consisting of structural steel, concrete and reinforcing steel. Under fire, as per eurocode, we need to divide the column section into various layers and get the temperature in every layer. What is the reason that the temmperature in every layer...

Yes, i do have the above handbook , but for shear connectors in areas of load introduction, no examples are given

I need to design shear connectors in regions of load introduction for composite columns.I am referring Eurocode4 for the purpose.Am looking for some solved examples for the purpose to make sure am applying the codal provisions correctly.Can anyone help me with this??Please , very very urgent!!

Yes,very sure.For calculating the effective flexural stiffness considering long term effects we add the stiffnesses of the components i.e. the structural steel,concrete and reinforcing steel. In case of concrete the code requires to modify "E" value in the expression.This "E" considering long...

No, i need the perimeter.The code defines a variable "ho" , it says that "ho" is the notional size of the member and, ho= (2Ac /u) , where, Ac is the cross sectional area of the member (the member is a column in my case) and "u" is the perimeter of the member in contact with the atmosphere...

It is a rectangular shape column, cross sectional area "A" and length "L"?

For calculating the creep coefficient as per Eurocode2, I need the perimeter of the member in contact with the atmosphere(denoted by "u") If the area of cross section of the member is "A". Length of the member (member is a column)is "L", what should be the perimeter "u".Should it be "4 x L"...

For a concrete encased hollow circular steel section (compposite section), the Eurocode4 says that its section axial resistance may be enhanced to the effect of confining provided the non-dimensional slenderness(which is the ratio of plastic resistance to axial compression to the elastic...

For a composite column section: The design shear resistance (?RD) due to chemical bond and friction is limited to the following values (as per the EuroCode4): 1)For fully concrete encased I sections: 0.6 N/mm2 2)For concrete filled hollow sections: 0.4 N/mm2 3)For flanges in partially I...

Then, supposing the column is taller(thus becoming slender) , then does it mean that the effect of restraining due to Poissons effect will be there? Plz help!!

For a concrete encased hollow circular steel section (compposite section), the Eurocode4 says that its section axial resistance may be enhanced to the effect of confining provided the non-dimensional slenderness(which is the ratio of plastic resistance to axial compression to the elastic...

Thanks for the replies.Anyone read the material "Composite Column Design to EuroCode4" published by "Steel Construction Institute"? I have some queries in regard to Appendix B of this material??

I need to develop Interaction curves for composite column sections(symmetrical sections).Have been going through the EC4 but unable to get the logic?Can anyone help me?Urgent!!