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Turkish Hello, I am getting the error that a slab does not meet the slab thickness requirement. The thickness control does not give an error when I get the clear opening value of 475cm. But the clear span is 510 cm. Can you explain this situation? so is it correct to show the opening smaller when it is actually 510cm?
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slab thickness control
- Thread starter kübra
- Start date
HakanŞahin
Administrator
According to TS 500 article 11.1, the "thickness exceeded warning" given by the program is correct. " m = 623 / 510 = 1.221 alphas= (510+623) / (510+623 +510+623) = 0.50 lsn=510 cm. If we substitute it in the formula; h >= ( 510 / (15+ 20/1.221) ) ) ( 1 - 0.50/4) = 14.2 cm Since 12 cm is not provided, a warning is given by the program."kübra":3no6jrti" said:I get an error that a slab does not meet the slab thickness requirement. The thickness control does not give an error when I get the clear span value of 475cm. But the clean span is 510 cm. Can you explain this situation? ?
Thank you for your explanation, but what I want to know is that I do not want to increase the thickness of the flooring. For this, I have no choice but to reduce the lsn value. I can't make the aperture smaller in the drawing, but I can change the thickness control clear aperture value. What I don't understand is that while the opening is lsn=510cm in the drawing, I define it as lsn=475 cm and there is no problem. How that happens?
HakanŞahin
Administrator
"kübra":6w8qen4w" said:Thanks for your explanation, but what I want to know is that I don't want to increase the slab thickness. I have no choice but to reduce the lsn value. I can't reduce the span in the drawing, but I can change the thickness control clear span value. What I don't understand is the span lsn= When it's 510cm, I define it as lsn=475 cm and there is no problem.How does this happen?
Sometimes, it may be necessary to intervene in the clear span value in non-beamed floors or in floors with irregular geometry, L-type etc. In the example you gave, the slab rectangle and slab dimensions (openings) are fixed at every point... Changing the value (ignoring TS 500) is at the discretion of the engineer... If the engineer changes the opening value, it means he knows why... Good work..."kübra":6w8qen4w" said:So I think the program allows us to make lsn smaller than its actual length
Since not all slab geometries are rectangular and in some cases, the initiative of the engineer may be required in determining the free span value (for example, consider an amorphous shaped slab, where even 2 engineers may have a different opinion on how much the lsn value should be taken...), the possibility of intervening in the free span value has been added to the program. You should not change this value in order to perform an error-free control in geometries where the free opening is clearly defined and correctly determined by the program.