Civil Engineering - RCC Structures Design - Discussion
Discussion Forum : RCC Structures Design - Section 1 (Q.No. 11)
11.
If W is the load on a circular slab of radius R, the maximum circumferential moment at the centre of the slab, is
zero
none of these.
Discussion:
9 comments Page 1 of 1.
Jero m said:
2 years ago
@Pradip.
Very useful, You gave the right explanation, Thank you.
Very useful, You gave the right explanation, Thank you.
(1)
Muhammad Sohail Hussain said:
4 years ago
Where is it mentioned that it is supported at edges or free at supports. Because condition change will change the numeric value.
(1)
Manav Kumar said:
4 years ago
max +ive radial moment = wr^2/16.
max -ive radial moment = 2wr^2/16.
So,
Max radial moment at center = wr^2/16+2wr^2/16= 3wr^2/16
This is fix at ends (when loaded sqaure/paraboloid shape).
max -ive radial moment = 2wr^2/16.
So,
Max radial moment at center = wr^2/16+2wr^2/16= 3wr^2/16
This is fix at ends (when loaded sqaure/paraboloid shape).
Siknb said:
4 years ago
Thanks @Kishor.
(1)
KISHOR said:
5 years ago
1 hinged support
At center ----- at support
Max radial moment : 3wr^3/16 ----- 0.
Max circumferential : 3wr^2/16 ----- 2wr^2/16.
2 Fixed support
Max radial moment : 1 wr^2/16 ----- 2wr^2/16.
Max circumferential : 1wr^2/16 ----- 0.
At center ----- at support
Max radial moment : 3wr^3/16 ----- 0.
Max circumferential : 3wr^2/16 ----- 2wr^2/16.
2 Fixed support
Max radial moment : 1 wr^2/16 ----- 2wr^2/16.
Max circumferential : 1wr^2/16 ----- 0.
(4)
Shianrilong Reamei said:
5 years ago
For simply supported M = 3wR^2/16.
For fixed M = wR^/16.
For fixed M = wR^/16.
Pradip said:
5 years ago
Circumferential moment = W/16 [ R^2 (3+u)-r^2 (1+3u)]
At centre r=0 and Poisson's ratio (u) = 0.2-0.25 for concrete which is very small. So, the moment becomes;
M= W/16 [R^2 (3+0)],
= 3WR^2/16.
At centre r=0 and Poisson's ratio (u) = 0.2-0.25 for concrete which is very small. So, the moment becomes;
M= W/16 [R^2 (3+0)],
= 3WR^2/16.
(3)
Atul chaudhary said:
5 years ago
I think option (A) is correct .
Circumferential moment = W (R2-r2)/16.
At centre r=0,
=W R2/16.
Circumferential moment = W (R2-r2)/16.
At centre r=0,
=W R2/16.
Thakur said:
5 years ago
Please explain the answer.
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