Civil Engineering - RCC Structures Design - Discussion
Discussion Forum : RCC Structures Design - Section 1 (Q.No. 43)
43.
If the effective length of a 32 cm diameter R.C.C. column is 4.40 m, its slenderness ratio, is
Discussion:
13 comments Page 1 of 2.
Khusi ram said:
4 years ago
SR=l/r.
r=√ (i/A).
i= π D^4/64.
A=π D^4/4.
So r=D/4.
SR= 4.4/.32/4.
SR= 55.ans.
r=√ (i/A).
i= π D^4/64.
A=π D^4/4.
So r=D/4.
SR= 4.4/.32/4.
SR= 55.ans.
(12)
Amrutha said:
6 years ago
For solid column slenderness ratio is effective length /least lateral dimension right?
(2)
Er NK said:
7 years ago
Thank you @Abhishek.
(1)
Nirman said:
7 years ago
Sr = length/least radius of gyration.
The Radius of gyration = root (Moment of inertia of circular columns/Area of the section).
The Radius of gyration = root (Moment of inertia of circular columns/Area of the section).
(1)
Asay said:
8 years ago
Slenderness Ratio=l/r(min) -------------(1)
Here ,
l=4.4m=440cm
And ,
r(min)=[I/A]^1/2 --------------(2)
Here ,
I=pi*d^4/64
=3.24*(32)^4/64
=51445.76cm^4
Now,
A=pi*d^2/4
=3.14*(32)^2/4
=803.84cm^2
Now putting values in eqn (2)
r(min)=[51445.76cm^4/803.84cm^2]^2
=8cm
Now, putting all the values in eqn (1)
Slenderness Ratio=440cm/8cm
=55.
So,
(D) is Correct Ans.
Here ,
l=4.4m=440cm
And ,
r(min)=[I/A]^1/2 --------------(2)
Here ,
I=pi*d^4/64
=3.24*(32)^4/64
=51445.76cm^4
Now,
A=pi*d^2/4
=3.14*(32)^2/4
=803.84cm^2
Now putting values in eqn (2)
r(min)=[51445.76cm^4/803.84cm^2]^2
=8cm
Now, putting all the values in eqn (1)
Slenderness Ratio=440cm/8cm
=55.
So,
(D) is Correct Ans.
Nithu said:
8 years ago
Thanks @Musa.
(2)
Kh . danish said:
9 years ago
Slenderness ratio = 4l/d.
= 4 x 4.40/32cm convert it to m.
= 4 * 4.40/0.32,
= 55.
= 4 x 4.40/32cm convert it to m.
= 4 * 4.40/0.32,
= 55.
(1)
Abhishek kumar said:
1 decade ago
K=d/4.
=0.32/4.
=0.08.
S.R=l/k.
=4.40/0.08.
=55.
S.R=55.
=0.32/4.
=0.08.
S.R=l/k.
=4.40/0.08.
=55.
S.R=55.
(1)
Shehzad said:
1 decade ago
Slenderness ratio = L/r.
r = 0.25 D.
= 0.25x32 = 8.
Slenderness ratio = 440/8 = 55.
r = 0.25 D.
= 0.25x32 = 8.
Slenderness ratio = 440/8 = 55.
(1)
Mahesh katkar said:
1 decade ago
Slenderness ratio = L\K.
k = ROOT (I min.\A).
I = 3.14*0.32^4/64 = 0.0005147 m4.
A = 3.14*0.32^2\4 = 0.080.
ROOT I/A = 0.0802.
K = 4.4/.0802 = 54.86 say 55.
k = ROOT (I min.\A).
I = 3.14*0.32^4/64 = 0.0005147 m4.
A = 3.14*0.32^2\4 = 0.080.
ROOT I/A = 0.0802.
K = 4.4/.0802 = 54.86 say 55.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers