Civil Engineering - Steel Structure Design - Discussion

Discussion Forum : Steel Structure Design - Section 1 (Q.No. 32)
32.
The average shear stress for rolled steel beam section, is
845 kg/cm2
945 kg/cm2
1025 kg/cm2
1500 kg/cm2
1875 kg/cm2
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
12 comments Page 1 of 2.

Arti said:   8 years ago
0.4*2400=960.
(2)

Ankhs said:   9 years ago
Anyone explain it please.
(1)

Suriya janak said:   9 years ago
The average shear stress in structural steel is 0.4fy.

So, consider fy = 2400 kpa.

Hence Avg. shear stress = 0.4 * 2400 = 980 kpa.
So, B or C.
(1)

Jazz said:   6 years ago
Avg shear stress = ( 0.4*230 +0.4*240 +0.4*250)/3.
= 945kg/cm2.
(1)

Kailash said:   8 years ago
Anyone explain this please.

Deep said:   7 years ago
Why we can't consider 250 mpa as fy?

For matching answer is right.

Sanchit said:   7 years ago
Because they take the beam whose thickness is more than 20mm and less than 40mm.

Raj said:   7 years ago
960 is the corect answer.
.4 * 240=96 mpa=96 * 10 = 960kg/cm2.

Amu bokato said:   6 years ago
@Raj.

How 240? Explain.

Rahul Ghogare said:   6 years ago
@Amu Bokato

If the thickness of member is less than 20 mm then Fy is 250 Mpa.

For 20-40 mm, Fy is taken as 240 Mpa.
For t > 40mm, fy is 230 Mpa.


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