Reinforced Concrete Building Does Not Save Steel Roof Sections

C

chatham

New Member
Hello, the attached project consists of 3 floors: Basement + Ground + 1 Normal Floor. Since it is planned to build a conference hall on 1 floor, some columns were deleted, so the roof was designed as steel. However, as a result of the analysis, I am getting error and reinforcement error on the KB111 beam and BAP6 reinforced concrete shear on the basement floor. However, some crosses and purlins on the roof also have a section failure error. Despite trying many alternatives, I could not find a solution. I wonder if there is something I have modeled wrong, I would be very happy if you could look at the project and help. Many thanks in advance to those who will help.
 
Hello there; In your project, only modeling arrangement in steel purlins is required. The final purlins seemed to be in one piece as they overlapped with the junction apex plate. When this error is fixed, there is no modeling problem. Your steel deficiencies appear to be due to the snow load. There is no problem in the designs of the sections, you will need to increase the section. Note: You can get more economical results if you place the diagonals as one full and one empty. Good work.
 
Ms. Nurgül, although the latest version is installed, when I open the project, I get the following error. I wonder how I should follow to open the project.
 
Nurgül, there are a few things I wonder about since I don't have the steel module. 1-) Can we manually assign a joint to the point where the steel columns meet with the reinforced concrete columns in this project? Because transferring the column lower moment from the steel roof to the reinforced concrete does not seem right to me. Even if the reinforced concrete is at a level to meet these loads, the connection detail will be problematic. There are special conditions for connection calculations of this type of steel column reinforced concrete bollards. 2-) When we make a moment-transmitting anchor connection under the aforementioned steel columns, does the program only inspect the steel connection as if it were attached to a raft foundation, or does it calculate the above-mentioned reinforced concrete bollard steel anchorage relationship? 3-) It is necessary to examine the separation of steel and reinforced concrete columns separately when checking earthquake regulations 4.3.4.2, 4.3.4.6 in such mixed structures
 
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