Civil Engineering - RCC Structures Design - Discussion
Discussion Forum : RCC Structures Design - Section 1 (Q.No. 18)
18.
Dimensions of a beam need be changed if the shear stress is more than
Discussion:
31 comments Page 2 of 4.
Akshay said:
7 years ago
As per IS 456-1978 section is redesigned if shear stress is greater than 20 kg/cm2 or 2N/mm2.
So, the Given answer is correct.
So, the Given answer is correct.
Rkrana said:
7 years ago
For beam, slab, column m15 grade is used and Max shear stress for m15 grade of concrete is 25kg/cm2.
So option C is right.
So option C is right.
(1)
Ajay kumar said:
7 years ago
Max shear stress of concrete= 0.63 under root fck.
So, for M15 concert it should be;
0.63 x under root 15 = 2.5 N/mm^2.
So, for M15 concert it should be;
0.63 x under root 15 = 2.5 N/mm^2.
NITEESH patel said:
6 years ago
M 40 τ max.=2.5 N/mm^2.
M 30 τ max. =2.2 N/mm^2,
M 15 τ max.= 1.6N/mm^2,
Ans =(D)= 2.5N/mm^2.
M 30 τ max. =2.2 N/mm^2,
M 15 τ max.= 1.6N/mm^2,
Ans =(D)= 2.5N/mm^2.
(1)
Rehan said:
7 years ago
The section is revised if shear stress is more than 0.4fc or 2 Mpa,and 2 Mpa is equal to 20kgper cm2.
Ghalib said:
7 years ago
Yes, Agree @Sourab Sharma.
Actually it is .63√(fck). So for higher grades, it will be the max.
Actually it is .63√(fck). So for higher grades, it will be the max.
Dayanand Pathak said:
1 decade ago
As per table-20 in IS-456 maximum shear stress can be taken by M-15 concrete grade beam is 25kg/cm2.
Sourab sharma said:
8 years ago
Maximum shear stress = 0.63(fck)^(1/2).
For M10 grade of concrete = 1.999 n/mm^2.
For M10 grade of concrete = 1.999 n/mm^2.
Kamal lochan parida said:
6 years ago
Fck means the characteristic value of concrete. Which expressed in N/square mm.
(1)
Rahul yadav said:
1 decade ago
Please anybody clear this question how we can decide grade we take M-25 then?
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