The second order indicator value indicates very high system rigidity.

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izmirli_35_35

New Member
In the attached project, he says MORE THAN ONE DIAPHRAGM IS DETECTED when he lays floors on the basement ceiling, on the areas formed by the slab edge for french balconies and analyzes. And as an error after the analysis, the SECOND ORDER INDICATOR VALUE IS TOO HIGH INCREASES SYSTEM RIGIBILITY. What do these errors mean? And only two small tiles cause this error? Is there another mistake I made? Thanks...
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Re: SECOND ORDER INDICATOR VALUE IS TOO HIGH THE SYSTEM IS RIGID Sn izmirli_35_35 If you create a floor after dividing the beam or curtain while creating the outer edges of the floors in the places you call French balconies, it does not give an error. My suggestions for your project. 1- There should be no height difference in the beam that continues from column to column on the 2nd floor and other floors. (K39-K40) 2- if there is a staircase in front of the elevator shaft; There should be a level difference between the mezzanine beams. (K42) 3- basement curtains should not be provided like basement curtains 4- balcony live loads must be controlled 5- K44 beam should be divided into two separate beams and supported on the K9 beam in the middle (incorrect support) 6- on all beams The wall loads on it should be controlled the same. 7- Beams continuing from column to column should be named with a single name. If it is to be divided, it should be divided with the same name. 8- It would be appropriate to take into account the support situation and to work the ladder into the formwork plan and dissolve the semi-rigid diaphragm. You cannot transfer the load of the stairs to the beams by laying on the floor. 9- In the 1st earthquake zone, it would be better if you do not make the narrow side less than 25 cm. (not in the earthquake regulation, but recommended)
 
Re: SECOND ORDER INDICATOR VALUE TOO HIGH THE SYSTEM IS RIGID A simple fix;
"unver":3849olt1" said:
.... 9- You'd better not make the columns less than 25 cm narrow side in the 1st earthquake zone. (not in the earthquake code, but advice) .......
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The relevant article is as follows. .... Item 3.1.7 Regarding the cross-section dimensions, the conditions specified in item 3.3.1 for columns with high ductility level are also valid for normal ductility level conditions. .... I think my brother Unver recommends 30 cm wanted.
 
Re: The second order indicator value is too high, the system is rigid it gives me the same problem, but I couldn't solve it on the terrace floor, can you help? Can anyone explain exactly what this means?
 
Re: The second order indicator value is too high, the system is rigid Hello Mr. Osman1991
"Osman1991":21px832n" said:
I have the same problem but I couldn't solve it on the terrace floor, can you help me? do you have a friend?
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If you add your problem and project, we can reply.
 
Re: Second order indicator value is too high, system is rigid
"Osman1991":3rk82lpb" said:
Can anyone explain exactly what this means?
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On Tdy 2007, 2 It is mandatory that the grade effects indicator value is less than 0.12. You cannot achieve this on the terrace floor. As can be seen in the formula, the larger the Delta average, the larger the grade effects indicator value. You can refer to TDY 2007 for the notations used in the formula. Get the earthquake regulation general report in the program, 2nd order effects Examine the values given under the heading.
 
Re: The second order indicator value is too high, the system is rigid what is the reason for my errors, do I need to enlarge the entire system or is there a place I entered wrong?
 
Re: The second order indicator value is too high, the system is rigid Hello. My suggestions: --The number one reason for the error is linear loads t/m taken, kg/m should be taken too high, --The console inside the building is undesirable (K33-K11 intersection) --Let the beams center the columns, --Let the cantilever beams be continuous, --You can reduce the live loads on the attic floor, you can remove the wall loads, --Increase the number of modes,(50) --Semi-rigid and solve together with the ladder , --Carrier system floor... 7, --Take ductility high, --You can make the ground enlargement rate 50%, --Concrete value can be C25, --analysis setting-load security TS500-TS498 mark, --Foundations after calculation You may need to enlarge. If you do, we'll look again. Unver ÖZCAN
 
Re: Second order indicator value is too high, system is rigid * Data entry of foundation beams is incorrect. You must tie it to the curtain knots. * Distribute the columns within the system. * If you are laying hollow blocks, connect the columns to the beams. * Do not make unnecessary studs. You don't have to run beams under walls. * Connect elevator tower columns and bulkheads together. No stairs going up there. The ladder will lead to the Attic. Therefore, both the beam can pass and it can be completely covered with flooring. * Do not ignore what other friends say. * You may not depend on the column dimensions and layout of the architect. What matters is whether it breaks the architecture or not. * Create continuities. * I am sending a design as an alternative. N. YILMAZ
 
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