Civil Engineering - RCC Structures Design - Discussion
Discussion Forum : RCC Structures Design - Section 1 (Q.No. 6)
6.
An R.C.C. column is treated as long if its slenderness ratio is greater than
Discussion:
94 comments Page 2 of 10.
Sonu said:
8 years ago
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.
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.
(2)
Gulshan Kumar said:
9 years ago
Everyone is confused with slenderness ratio and ratio of effective length to least lateral dimension.
You should know that both are not same. Slenderness ratio is the ratio of effective length to the radius of gyration.
You should know that both are not same. Slenderness ratio is the ratio of effective length to the radius of gyration.
Ravi Singwal said:
9 years ago
In this questions,
The language of the question should be that :-.
A column is regarded as a long column if the ratio of its effective length to the least lateral radius of gyration is more, so the correct answer is 60.
The language of the question should be that :-.
A column is regarded as a long column if the ratio of its effective length to the least lateral radius of gyration is more, so the correct answer is 60.
Mallaya PVS said:
5 years ago
As per IS 456 and SP16 (clause 3.4 of compression members) if Slenderness ratio leff/LLD is more than 12 it is a long column. For steel structures, the Slenderness ratio is Leff/r min and its limiting value is 180.
Ashu Sharma said:
8 years ago
In RCC radius of gyration>12 then long column; if <12 short column.
In STEEL, column radius of gyration>200 then long column; if <=50 short column; if inbetween 40-200 then intermediate column.
In STEEL, column radius of gyration>200 then long column; if <=50 short column; if inbetween 40-200 then intermediate column.
Vishal said:
6 years ago
Let me clear all ur doubts,
L/least dimension <3=pedestal,
3-12 = short column,
12-60= intermediate col,
>60.
Also;
L/radius of gyration<30= short col,
30-120=intermediate col,
>120.
L/least dimension <3=pedestal,
3-12 = short column,
12-60= intermediate col,
>60.
Also;
L/radius of gyration<30= short col,
30-120=intermediate col,
>120.
(3)
Ganesh said:
10 years ago
Long column (l/b) > 12.
or (l/r) > 40.
l = Effective length.
r = Radius of gyration.
b = Least dimension.
l/r is slenderness ration and it should be > 40. So 50 is the answer.
or (l/r) > 40.
l = Effective length.
r = Radius of gyration.
b = Least dimension.
l/r is slenderness ration and it should be > 40. So 50 is the answer.
Mahesh said:
1 decade ago
Slenderness ratio is more than 12 then the column is considered as long column I agree. But this que. Option are given 30, 35, 40, 50, 60. Then how to identify that ratio column is long?
Dhamendra meena said:
9 years ago
Long column (l/b) > 12 or (l/r) > 40.
Where,
l = Effective length.
r = Radius of gyration.
b = Least dimension.
l/r is slenderness ration and it should be > 40. So 50 is the answer.
Where,
l = Effective length.
r = Radius of gyration.
b = Least dimension.
l/r is slenderness ration and it should be > 40. So 50 is the answer.
Vini said:
9 years ago
What is the exact answer? Can anyone tell me, In IS456-2000 page number. 42 given that 60times the least lateral dimension. But you all said that least radius of gyration. How?
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