Why there is a difference between hand calculations and software calculations?
The results should be the same but as software calculations tend to require less effort once they are set up they usually calculate more load cases whereas an engineer that does his work by hand will try to work smarter and identify the key sections and load cases and so limit the amount of work required.
How to change design code in ETABS?
Answer: The design code may be specified by selecting Design > _ Frame Design > View/Revise Preferences.
How does Etabs calculate period?
Etabs uses the actual mass and stiffness of your model to calculate the period of the building, hence more closer to the reality.
Why are simulation and calculations different?
Re: difference between the calculation by hand and simulatio Hand calculation takes simple mos model (level 1) into consideration. On the other hand computer simulation takes complex model into consideration,while doing calculation. Difference betn results are very less than 5 to 10 \%.
What are the two different methods to increase the accuracy of analysis in finite element method?
The difference between the two methods lies in how these elements are treated. The h-method uses many simple elements, whereas the p-method uses few complex elements. More accurate information is obtained by increasing the number of elements. The name for the h-method is borrowed from mathematics.
What are the parameters we considered for column designing in ETABS?
There are two options to design the columns in ETABS. We can either use the “Reinforcement to be Checked” and “Reinforcement to be Designed” option.
Why theoretical and experimental values are different?
This difference is due to three factors: the variation of the diffusion voltage, the nonzero electric field at the boundaries of the depletion region, and the contribution of electrons and holes. The exact values also disagree with the experimental results.
How precise are the results from ETABS?
And, if you are referring for code-specified analysis, the results from Etabs are very precise. 1) Approximate: Calculate the approximate period, T, based on the formula discussed in various codes, such as Section 7.6.1 of IS:1893 Code where the period is calculated using the following equations:
How does ETABS calculate the period of a building?
The manual calculation is approximate. Etabs uses the actual mass and stiffness of your model to calculate the period of the building, hence more closer to the reality. 8 clever moves when you have $1,000 in the bank.
What is the difference between ETABS 2017 and is 1893?
The time period (the one-story model of the structure is below) calculated manually by using the equation in IS 1893: 2016 is 0.170963 and that given by Etabs 2017 is 0.171 (highlighted in the picture below). If we round off the result from the manual calculation to three digits, after decimal, the results are exactly equal.
How to calculate lateral load in ETABS?
Step 1: Go to Define Load Patterns and Click Modify Lateral Load. Step 2: Click the Approximate option and assign the coefficient. The time period (the one-story model of the structure is below) calculated manually by using the equation in IS 1893: 2016 is 0.170963 and that given by Etabs 2017 is 0.171 (highlighted in the picture below).