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Does IBC2006 addresses this issue ?

thanks ! what is center of rigidity ?

JAE and CSD72 , you both are senior engineers and structural engineers, i am just a civil engineer and not much experienced with structures, its not that i am designing anything but i want my concepts more clear about structures, so please dont mind me asking ABC questions of structural...

In a 12 Story building with a very irregular grid rectangular in the middle then circular at one end. What are the factors that should be kept in mind when placing shear walls at a certain location in this or any other building? is there any reference/code stating or justifying the location of...

Bobber1 i have already bought it ! and trust me its worth it ! writting calculations in it is just like typing formulaz only. it has autoselect tables for reinforcements and sections. ! excel sheet is nothing compared to TEDDS for words.

You know i use CSC TEDDS for writing engineering calc sheets, its really easy and much more presentable. try a demo www.cscworld.com

the idea of the seperate frame was on the table before this post ! This building is actually a hospital, and just below this bridge is the main entrance. The architect is not happy with the idea of any type of hinderance in entrance or its path, however i am going to discuss it again with the...

Please comment on the Idea of two cantilevers from each tower and the sections not joining in the middle (total 8" gap in the center of both the cantilevered sections) and just the Decks extending into each other and 8" of rubber sealent fitted at this mid location as siesmic joint! cross rope...

how about two cantilevers from both the towers, 14'-8" each and a deck extension and joint in the center, this way each member becomes the part of each tower. And some seismic sliding joint of the deck in the center ? will this work ?

msquared48 wow! why dint i think of that :)

271828 after reading your reply at night i thought over it, and i came up with some more questions in my head -- what about the lateral movement? how will a sliding bearing plate cater for that ? -- what about rotation in upward/downward direction? thanks

how about a very stiff fixed connection at both the ends so that there is no movement at both ends ! and heavy connections here at ends. so they dont move at all ???

thanks 271828 tell me! how about having a sliding bearing plate on both ends rather one fixed and one with sliding bearing plate ! and please help find a typical detail of sliding bearing plate for such joint?

when two towers are moving away ! thats like 4" + 4" = 8". eight inch slide brearing plate connection /??

The Building is already constructed.

two towers of 10 stories are 30ft apart, and there is a need of pedestrian bridge on every story level between the two towers. Building is in Zone-III. The principle design engineer thinks that it cannot be bridged with a steel structure pedestrian bridge as the buildings are expected to sway...

Hi, I am using ASCE-07 for the first time for seismic loading. I have found it very different from UBC 97 which i usually use, Can any one suggest a good reference for using this code for seismic loading of the building. p.s. i am not in USA.

this might help you too http://www.thestructuralengineer.info/library/index.html

ok some more clarificaions: a- The beam is concrete beam and NOT steel. this is concrete frame structure. VoyageofDiscovery: you are suggesting the easy way out obviously evacuating and repairing is the best solution, but these cracks are hairline cracks, and not the kind of cracks which...

let me shed some more light on the subject. This is a building of Telenor (a cell phone company) its a MSC building which means loads and loads of equipment inside which is so dust sensitive that when you go inside the hall you need to wear shower caps, gloves and shoe covers. on the 2nd floor...