Hello i would like to know what needs to be considered in order to ensure beam - column joint is stronger, especially when the beam width is greater than column width,lets assume my beam is 400mm x 600mm while column is 250mm × 300mm.
Is there any special detailing needs to be considered with this kind of geometry?
Can RCDC design this kind of joint using BS 8110?
Beam width can never be grater than column width in concrete members. It must be equal or smaller than column width.
Analysis result will let you know if you have to increase column width or you can reduce your beam width.
May you elaborate for me ,the reason behind this scenario that the beam width should be smaller or equal to column width?
If its vice versa what will happen?
Hi,Column beam joint check is available in column design. Please select ductile design option available in design setting for Euro code, select Ductile high type.
Answer Verified By: Joseph Lucas Magare
Thank you Abhijeet
I have done design using BS EN, and this is the results, now coming to design results interpretation relating to the attached picture
Ductile links are the horizontal links?
Another thing i have seen in Advanced Ductility Setting i have option written as
"Consider Basement Below Level" what does this mean in my design?
If you check the attached RCDC you will see column failure due to shear these are the ones which fails due to large size of the beam?SUPPORT AND ANALYSIS-Column-1.zip
Hi,
beam width higher than column width is not recommended if the structure is under high seismic zone.
I had suggested horizontal links just to make sure that the beam transfers the load effectively on column in case of beam width is more than column width.
There is no specific calculation for the horizontal links in the BS and BS EN codes. Engineer has to use his judgement to provide horizontal links to make sure that the joint is confined in case beam width is more than the column width.the ductile links suggested in the column module are the links within the column beam joint, as these are column links, those would be provided as horizontal links within the column beam joint.
in you case, column width is less than the beam width, if you provide only column links within the joint, the confinement of the joint will not achieve. So, it is recommended to provide additional horizontal links as per your judgement.
Advance ductility settings are for the column pt calculation and ductile wall design. please select the appropriate values as per design requirements.
if you don't have Basement in the structure, please provide the value as 0m.
Thank you Abhijeet for your detailed explanations.