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R coefficient..
- Thread starter carlos
- Start date
HakanŞahin
Administrator
If the ductility level is normal, you should get R. If the maximum pursantage is a warning, it means that the element's pursantan exceeds the pursantage limits given in the regulation. Since you received R=1, it may be because the earthquake effects were calculated too high ."carlos":zfd5b52f" said:reducing the carrier system behavior coefficient error warning from R=8 to 1 during the analysis was resolved.. but I want to know why it happened.. and there is a warning..max.pursantage exceeded. .. thanks.. carlos..
afrasiyab45
New Member
According to the earthquake regulations, the number of R floors should not be taken as 8 in curtain wall systems. There is an account regarding the selection of the R floor number in the İdecad report section. For example, if you take the alpha as 0.76, you can choose 4x0.76=3.04, and the R coefficient is 10-3.04=6.96. When you write this value, you will not get the error you mentioned. The maximum pursanaj error is taken due to the shear force in the beams. I know that you should either increase the dimensions of the beams mentioned or increase the diameters of the reinforcements inside. i hope it helps
Looking at the background image, I see that your system has curtains. Whereas you got R=8. The R value can be up to 7 when there are curtains in the system. If you encounter the problem that the ratio of the shear bending moments to the total overturning moment is greater than 0.75 even though you have entered the R coefficient 7 in the system, In the formula that "afrasiyab45" says for the R value, R=10- You use the formula 4 x alphaS. But as a result, which R coefficients will be used for which types of buildings in the earthquake code Section 2.5. and TABLE 2.5 CARRIER SYSTEM BEHAVIOR COEFFICIENT (R) are tabulated. I suggest you take a good look and review.