Civil Engineering - RCC Structures Design - Discussion

Le/D > 12 long column.
OR
Le/least radius of gyeration >45 lng column.

Short>32.
Medium----32-120.
Long---120.

Please, anyone give me the correct answer with the clear description.

It's answer is 60 for long columns.

Dear friends.. this question and Answer is for the Wooden column. but not mentioned in the question.

SR = Leff /r.
Where: Leff= the effective length, which depends on the boundary or end conditions (discussed later) r = the radius of gyration r = √ I/A = moment of inertia of the column Based on the slenderness ratio columns are classified as short, intermediate, and long (slender column).

For example, a wooden column with a Leff /r ratio less than 11 is defined as the short column. Intermediate columns have Leff /r values in the range of 11 to 30. The columns with Leff /r value greater than 30 are defined as a long or slender column.

If the is column is RCC then the slenderness ratio is more than 12 then it is a long column or if it s less than 12 then it s called short column long column i b 12 or i r.

If the column is steel column then slenderness ratio is more than 12 then it is a long column or If it s less than 12 then it s called short column long column i b 12 or i r.

I/r is slenderness ration and it should be =<40 / this is for Steel ! Remember.

THIS IS FOR YOUR INFORMATION ,
Short RCC Column =<12.
Long RCC Column >12.
Short Steel column, =<50.
Intermediate Steel Column >40 & <200.
Long Steel Column >200.

What is slenderness ratio?

50 for rcc & 80 for steel.

There is two solution guys,

1) if Le/d>15 long column.
Le/d<15 short column.
where Le=total length of column and d=width.

2) Other method is to find out radius of gyration K= sqrt(I/A) where I=moment of inertia and A= Area.
Le/k>50 than its long column.
Le/k<50 than its short column.