Building Analysis
Rigid links automatically created inside columns to support offset beams
Introduction During modelling structures, there may be situation where the beams insertion point is offset from columns insertion point. In other words, the beam end node may not coincide exactly with the column node. In ProtaStructure, as long as ...
Reports
Various reports can be generated under " Drawings & Reports" tab. Pre-analysis Checks Report This report summarizes basic analysis model data such as storey heights, load combinations, materials and section properties. The member sections properties ...
What is Merge FE Column / Beam results with Example
How to merge the results from sub-frame analysis and results from the 3D building analysis? After a model is completed, a building analysis is mandatory which will generate results for G and Q (including the pattern cases of G and Q) as well as ...
Detailed Design Diagram
Introduction Member analysis results for can be viewed in Detail Design Diagram after running the Building Analysis. Forces such as moment, axial loading, torsion, shear and etc. can be reviewed here. To access Detail Design Diagram: click on ...
Analytical Model
Physical Model vs Analytical Model The 3D model you built is a physical model with actual member size rendered visually. The analysis converts the physical model into the analytical model (as shown below). The analytical model is essentially a ...
Staged Construction Analysis
Introduction Staged construction analysis is a sophisticated method of solution which, if used with a reasonable degree of care can more closely reflect the real behaviour of the structure. A standard 3D analysis takes no account of time dependant ...
Overview of Axial Load Comparison Report (Detail Example)
Tutorial video of this topic is available at ProtaStructure 2025 Basic E-Learning: 14 Building Analysis, Axial Load Comparison Report A simple model can be created for a simple illustration of the Axial Load Comparison Report. The 3D view of the ...
Analysis Warning : Diaphragm Nodes not in the same Plane
If a warning appears during analysis, indicating that nodes constrained by a diaphragm do not lie in the same plane, it should not be ignored : Warning: [DIAPHRAGMS] Diaphragm Nodes not in the same Plane. Nodes in different planes are constrained to ...
Diaphragm Modelling Example
In a typical building lateral resistance is provide at a few discrete points and it is assumed that applied lateral loads will be distributed to the lateral load resisting systems via floor diaphragm action. Within ProtaStructure diaphragm modelling ...
Sway Sensitivity & Second-Order Effects
Automatic Assessment of Sway Sensitivity Sway sensitivity is automatically determined in ProtaStructure when the design code is set to EC2 and ACI. For other codes as discussed below, an assessment of sway sensitivity can also be made, however it ...
Rigid Zone Interpretations
In order to consider concrete cracks that can be formed in the intersections, rigid zones may be reduced by a certain amount to calculate more realistic effects. ProtaStructure’s interpretation of rigid zones in member intersections can be summarized ...
Building Model Check
The building model check will check for possible modelling errors or mistakes. It is highly recommended to perform "Building Model Check" progressively when building the model so that problems are identified early in the project before running an ...
How to check singularity or large deformation warnings during Building Analysis
It’s very important to know how to check the validity of the model especially if there are errors or warning messages appearing during building analysis. The warning are also record in the "Analysis Model Echo" report accessible by going to "Drawings ...
Difference between Building Analysis and FE Floor Analysis
This article explains the differences between Building Analysis and FE Floor Analysis & which method is suited for different structural system. The fundamental differences of the analytical model created are shown in the below diagram. For detail ...
Analysis
The Building Analysis is performed from the “Analysis” page of the “Building Analysis” form. On this page options are also provided to run a Building Model Check, to perform an Eigenvalue Analysis, to run batch Column/wall and Beam designs, batch ...
Model Options
Options to be used in analysis can be specified in “Model Options” page of “Building Analysis” form. “Model Options” comprises of four tab pages namely, Model, Shear Wall Model, Slab Model, and Settings. Any modifications made in this page can be ...
Building Analysis Overview
Having modeled your structure and defined the parameters/loading to be applied, you are now ready to generate the member design forces. These are determined by performing a 3D analysis of the whole building. The pre and post analysis stages, along ...