All Courses
All Courses
STRUCTURAL MODELING USING ETABS AIM - To design a structural model based on provisions from IS 1893 and IS 13920 in seismic zone 5. To Run a modal response spectrum analysis and check analysis results of the Etabs model for inter-story drift requirements,…
Aditya Bhute
updated on 19 Oct 2022
STRUCTURAL MODELING USING ETABS
AIM -
INTRODUCTION-
ETABS is an engineering software product that caters to multi-story building analysis and design. Modeling tools and templates, code-based load prescriptions, analysis methods, and solution techniques, all coordinate with the grid-like geometry unique to this class of structure. We all know that earthquake is a devastating disaster on planet earth. Earthquake codes are revised period by period and updated improvements in the representation of ground motions, soil, and structures. Moreover, these revisions have been made in recent years. The Indian Standard Code (IS 1893:2016(Part-1)) was also revised in 2001 and has been in effect since 2002. Most recent data on earthquakes show that the irregular distribution of mass, stiffness, and strengths may cause serious damage to structural systems.
TASK -
The architectural drawings for a G+7 residential building in zone 5 have been provided. The floor plan is the same for all 7-floor levels. Possible column positions have also been provided. Conceptualize a framing plan layout and then model the building in Etabs. The following architectural drawings have been provided:
The structural model must comply with provisions of IS 1893 and IS 13920.
Run a modal response spectrum analysis and check analysis results of the etabs model for inter-story drift requirements, vertical & planar irregularities, minimum shear wall requirements, maximum axial load ratio for column and shear walls, an effective moment of inertia for beams
and columns, etc.
Please note that the column positions shown in the architectural typical floor plan are only to provide an initial starting point for modeling. Participants will have to change its size, introduce shear walls, and add new vertical elements after running the analysis. You will have to run the analysis multiple times until a structural model is obtained that meets structural code requirements without compromising architectural functions. Also, there is no one ‘correct’ structural system for this challenge. There can be multiple possible solutions for this problem.
PROCEDURE -
Open up the Architectural Plan of the Building
OPEN THE NEW MODEL AND ENTER THE IS CODES
Custom Grid Data
Custom Grid Data
Initial Grid and Story Data Setup
Define Materials
M30 Concrete
HYSD 415 for Shear Reinforcement
HYSD 500 for Longitudinal Reinforcement
Define Frame Properties
Column 450 x 650
BEAM 400 X 500
Slab 150 mm thick
COLUMN ARRANGEMENT
BEAM ARRANGEMENT
SHEAR WALL ARRANGEMENT
COMPLETE STRUCTURAL MODEL WITH FLOORING
Define Load Patterns
Assign Brick Wall Load
Live Loads
Floor Finishes
Live Load Reduction As per the Codebook
Define EQ Load Patterns
Define Mass Source
Add up the Modal Case
Response Spectrum Analysis
Response Spectrum Load Case in X-direction: RSx
Response Spectrum Load Case in Y-direction: RSS
Generate Load Combinations
Define and Assign Pier Labels to the Shear Walls
Assign Diaphragm
Check the Model and Run the Analysis
Base Shear Check
Modal Participation Ratio Check
Check for the Inter-Story Drift
Story Drift in the X-direction
Story Drift in the Y-direction
RESULT:
The structural model of the G+7 model is designed for given architectural planning using Etabs.
A frame model which satisfies both code provisions is analyzed
Columns, shear walls, and beams are provided in a possible symmetrical way without many offsets.
Analyses are done for modal number, base shear story drift aspect ratio, irregularity, etc.,
As per the analysis result, the building is a bit flexible on the y-axis, as shear walls are sufficient to add additional columns as provided in the y-direction to meet the maximum story drift limit.
Leave a comment
Thanks for choosing to leave a comment. Please keep in mind that all the comments are moderated as per our comment policy, and your email will not be published for privacy reasons. Please leave a personal & meaningful conversation.
Other comments...
Project 2_Design & Analysis of a Hostel building at Guwahati, Assam
DESIGN AND ANALYSIS OF A HOSTEL BUILDING AT GUWAHATI, ASSAM AIM - TO STUDY THE DESIGN AND ANALYSIS OF A HOSTEL BUILDING AT GUWAHATI, ASSAM INTRIDUCTION - ETABS is an engineering software product that caters to multi strorey building analysis and design. SAFE represents the state of art in three dimensional…
21 Oct 2022 11:31 AM IST
Foundation Design using SAFE
FOUNDATION DESIGN USING SAFE AIM - TO STUDY THE FOUNDATION DESIGN USING SAFE. INTRODUCTION- CSI SAFE (Slab Analysis by the Finite Element Method) is the best tool for designing concrete slabs and foundations. SAFE provides easiness to engineers towards the safe design of structures with powerful…
20 Oct 2022 04:53 PM IST
Design of Shallow Foundation (Isolated Footings)
Design of Shallow Foundations (isolated footing) AIM:To design a square footing for a column size of 400x400 for given constraints and do the following check:• If the gross bearing pressure under the footing is within safe bearing capacity Provide sufficient depth and longitudinal steel for resisting bending…
20 Oct 2022 10:41 AM IST
Structural Modelling using Etabs 2018
STRUCTURAL MODELING USING ETABS AIM - To design a structural model based on provisions from IS 1893 and IS 13920 in seismic zone 5. To Run a modal response spectrum analysis and check analysis results of the Etabs model for inter-story drift requirements,…
19 Oct 2022 04:03 PM IST
Related Courses