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Post tensioning is a way to solve the problem. Moment curvature analysis,reinforced concrete column design and prestressed concrete pile design at www.structurexpress.com

The case you have is very common for bridge cap beam seismic retrofit. You definitely have to extend the new section through the column so that it will be effective for the shear. We used pretty much the same concept as you have. Using dowel bars and design based on shear friction and also have...

These problems are not uncommon in ANSYS. I would suggest try exactly the same thing several times. If that still doesn't work, contact ANSYS if you have to put on nodes instead of lines. Moment curvature analysis,reinforced concrete column design and prestressed concrete pile design at...

Try Bentley AutoPipe Moment curvature analysis,reinforced concrete column design and prestressed concrete pile design at www.structurexpress.com

stressed is correct. Do that through stiffness modifier. However, read the SAP2000 manual for how each component(direction) is defined since that could be confusing for first time user. A lot of times it is the opposite way than you think it is. Moment curvature analysis,reinforced concrete...

If you design a bridge bearing pad, you may want to know the joint rotation at the location of bearing pad. Moment curvature analysis,reinforced concrete column design and prestressed concrete pile design at www.structurexpress.com

I feel it is not a very good idea to use the rail since they are not good for bending. There are times we use a wide flange encased by concrete when the excavation is deep. But in that case, we only rely on the wide flange. I doubted it can be considered as a fully composite section.You may let...

Do you have to do this on a mobile device? There is a free program much like MathCad called Smath Studio. I used the desktop version before and it works pretty well. http://www.smathstudio.com/. But I just looked at their website. It seems that they have mobile app too.Good luck! Moment...

JedClampett is right. This is very basic. There is a free program developed by WSDOT and TX Dot called PGSuper. That is used for design bridges.Not sure what kind of superstructure you have though. Moment curvature analysis,reinforced concrete column design and prestressed concrete pile design...

We used SAP2000 a lot. But we never use that for steel design. It is only for analysis though the program can do the steel check for you. If you do mostly steel design, I would recommend RAM Steel. Moment curvature analysis,reinforced concrete column design and prestressed concrete pile design...

Larger column bars get rejected? Don't tell me they are doing some displacement based seismic design stuff. Hinge the column to protect the superstructure? In that case, larger size column dowel may be rejected. Where is your project located? Is it in a seismic zone?[afro] Moment curvature...

Yes, if the your bolt or concrete stub fails, it will affect your frame. I think when you check your bolt and its anchorage in concrete, you need to model the frame as fixed at the base so that you get the correct loads(moment,shear or column uplift if there is any) for the base connection.If...

First, you need to reanalyze your structure assuming a moment connection instead of pin at the base. Second,based on what you said, you concrete stub is able to take the load. It's just because the concrete stub failure will happen before steel yielding. I am not sure if that is really something...

This is a very basic question. Do a google search and you should find tons of information that any of them may help you to solve your program. Moment curvature analysis,reinforced concrete column design and prestressed concrete pile design at www.structurexpress.com

It looks to me that in your 2D anlysis, the membrane behavior of the slab is ignored which is conservative. The membrane behavior does help to take even the gravity load.In think in SAP2000 which is the same family as SAFE,you can specify different thickness for slab bending and membrane...

Take ACI and write a spreadsheet By yourself. That will help you To understand everything. I am sure there will be times you need to play around with Those formulas. By the way,they are not Difficult at all. Moment curvature analysis,reinforced concrete column design and prestressed concrete...

You can also download the software DFSAP by WSDOT. The method as shown in the reference by avscorreia is also implemented in DFSAP program. But this program is best suited for shafts not small diameter piles. www.structurexpress.com

Is the member you are designing a major structural element or not? One point is that concrete at the interior face of you cross section may spall off just like you exterior cover. www.structurexpress.com

abuelhassan, You may need to give more details on the sample slab problem you try to solve with SAP2000. Some screenshots will be helpful too. One point from my experience is if you model the slab with shell elements. Be careful with the boundary conditions. Also if I remember correctly, there...

Area spring is just a quick way for you to assign the spring to the area. At then end, the spring stiffness will be lumped at each joint. www.structurexpress.com