Indian Standards (IS)
Standards and codes are important. Where do you plan your project and what do you have to pay attention to? When it comes to international standards, the Dlubal programs are reliable companions for customers from all over the world. You will find numerous standards integrated in RFEM and RSTAB, whereby the corresponding add-ons allow you to design steel, reinforced concrete, and timber structures. Here you will find an overview of the standards available in the programs for the respective countries.
Implemented Standards
Implemented IS Standards
The structural analysis programs RFEM 6 / RSTAB 9 facilitate your work. Here you can automatically create the load and result combinations according to the Indian standard IS 800.
Structural FEA Software RFEM 6 Structural Frame & Truss Analysis Software RSTAB 9Steel Design add-on for RFEM 6 / RSTAB 9 performs the ultimate and serviceability limit state design of members according to the Indian standard IS 800.
Steel Design Add-on for RFEM 6Use the Modal Analysis add-on for RFEM 6 / RSTAB 9 to determine natural frequencies and mode shapes with minimum effort.
In contrast, the Response Spectrum Analysis add-on for RFEM 6 / RSTAB 9 allows you to perform seismic analyses using the multi-modal response spectrum analysis. Among others, the Indian standard IS 1893 is also implemented here.
Modal Analysis Add-on for RFEM 6 / RSTAB 9 Response Spectrum Analysis Add-on for RFEM 6 / RSTAB 9The coefficient θ is calculated as follows:$$\mathrm\theta\;=\;\frac{\displaystyle{\mathrm P}_\mathrm{tot}\;\cdot\;{\mathrm d}_\mathrm r}{{\mathrm V}_\mathrm{tot}\;\cdot\;\mathrm h}\;$$
The building model is calculated in two phases:
- Global 3D calculation of the global model, where the slabs are modeled as a rigid plane (diaphragm) or as a bending plate
- Local 2D calculation of the individual floors
After the calculation, the results of the columns and walls from the 3D calculation and the results of the slabs from the 2D calculation are combined in a single model. This means that there is no need to switch between the 3D model and the individual 2D models of the slabs. The user only works with one model, saves valuable time, and avoids possible errors in the manual data exchange between the 3D model and the individual 2D ceiling models.
The vertical surfaces in the model can be divided into shear walls and opening lintels. The program automatically generates internal result members from these wall objects, so they can be designed as members according to any standard in the Concrete Design add-on.
Several modeling tools are available for elements in building models:
- Vertical line
- Column
- Wall
- Beam
- Rectangular floor
- Polygonal floor
- Rectangular floor opening
- Polygonal floor opening
This feature allows you to define the element on the ground plane (for example, with a background layer) with the associated multiple element creation in space.
Using the "Load Transfer Only" story type, you can consider slabs without stiffness effect in and out of the plane in the Building Model add-on. This element type collects the loads on the slab and transfers them to the supporting elements of a 3D model. Thus, you can simulate secondary components, such as grillage and similar load distribution elements, without any further effect in the 3D model.
Use the "Independent mesh preferred" option in the FE mesh settings to create an independent FE mesh for the integrated objects. This allows you to generate a significantly more detailed and precise FE mesh for individual objects that are integrated into one another.
What are Line Hinges and Line Releases?