how to solve the deflection in beam?

[ammer]

hello
even when i increased the depth of the cantilever beam and reduced the loads ,the deflection was greater than the allowable limits.
what are your recommends?

 

[Hakan Şahin]

Hello,

Simply increasing height of beam is enough to solve this problem but sometimes you'll need to increase height of other beams or columns around it, because of whole system deformations. Please check deflection diagram in beam reinforcement dialog and decide what you'll need to do and try it.

 

[ammer]

hello Mr hakan
I'll take your advice.and i attached the file example if you could to solve it to me
my regards

 

[Hakan Şahin]

Hello again,

Sudden deflection control is not problem, deflection of depend on time that calculated according to Turkish Standard 500 (TS500) is problem.

if beam section will be selected as 70/70 cm, deflection's control will be okay.

There was some connection problem on beams(B70, B74 etc.), I fixed them.

 

[ammer]

hello dear
thank you very much it was too helpful...i agree with you the sudden deflection not effect exactly.but according to ACI CODE 318 the effective depth=span/8 and we have 1.75m so we need 22cm depth....but here doesn't works why?

 

[ammer]

my idecad version is 7.017
the fixed file didn't open.

 

[Hakan Şahin]

i agree with you the sudden deflection not effect exactly.but according to ACI CODE 318 the effective depth=span/8 and we have 1.75m so we need 22cm depth....but here doesn't works why?

If you uncheck the option of "always check deflection" on Crack/ Corrision Tab in Beam Settings, program will check only beam's span if deflection is required according to TS500.


Cantilevers -> span / 5
Simple supported beam -> span / 10
Side beams -> span/12
inner beams -> span /15

Check this requirements for your beam heights

 

[ammer]

hello dear
thanks to your advice.