# Civil Engineering - Steel Structure Design - Discussion

### Discussion :: Steel Structure Design - Section 1 (Q.No.9)

9.

According to IS : 800 - 71, the minimum thickness of a vertically stiffened web plate, shall not be less than

 [A]. [B]. [C]. [D]. [E]. none of these.

Explanation:

No answer description available for this question.

 Ganesh said: (Oct 26, 2015) d/t<85 no stiffener. d/t 85-200 vertical stiffener. d/t 200-250 vertical stiffener and 1 horizontal stiffener.

 Rishi R said: (Feb 23, 2016) d/t 250-400 vertical stiffener + 1st horizontal stiffener + 2nd horizontal stiffener.

 Ramen said: (Aug 10, 2016) So why option d is correct?

 Guru Prasad Mahapatra said: (Dec 14, 2016) According to me, option B is the correct answer.

 Amrit Raj Negi said: (Jan 29, 2017) d/t < 85-200 for vertical stiffener. I think the answer is A.

 K K Baba said: (Mar 15, 2017) d/t< 85-200 for vertical stiffener. So, the answer is D/85 means.

 Rohit Negi said: (Aug 1, 2017) Anwser b is correct.

 Suman Rai said: (Sep 23, 2017) Yes, A is the right answer.

 Deepak said: (Nov 19, 2017) According to the question, The answer will be min. 85 and max 200 for vertical stiffness. So I think answer A is correct.

 Naveen Kallan said: (Dec 1, 2017) D/t should be 85 to 200. Min value is D/200.

 Ritu said: (Dec 17, 2017) Option D is correct.

 Satyavan Saini said: (Dec 20, 2017) Because in question giving no less than, so option A is not correct.

 Pankaj Chaudhary said: (Jan 7, 2018) A is correct. No stiffeners are provided if web is less than d/85. Vertical stiffeners are provided if web is more than d/85 but less than d/200. Vertical +1horizontal stiffeners are provided if web is more than d/200 but less than d/250 (in this case this 1 horizontal stiffener is usuall place at 2/5th of the depth of neutral axis from the compression flange). Vertical +2 horizontal stiffeners are provided if web is more than d/250 (in this case this 2nd horizontal stiffener is usuall place at neutral axis).

 Garry said: (Jan 19, 2018) The correct answer is option B.

 Prasenjit said: (Jan 26, 2018) According to me, A is correct.

 Simi said: (Jul 11, 2018) Yes, A is the right answer.

 Sam said: (Sep 12, 2018) Option B is the right answer.

 Satyamev said: (Sep 22, 2018) Minimum D/200 max is D/85. If the thickness exceeds d/85 then no stiffener required because. There is enough strength to carry the load as the thickness is more. So, the minimum d/200.

 V.V.Savaliya said: (Sep 30, 2018) Absolutely right, Thanks @Satyamev.

 Nilraj said: (Dec 9, 2018) Correct @Satyamev.

 Anomie said: (May 27, 2019) Yes, right @Pankaj.

 Pankaj said: (May 27, 2019) B is correct. No stiffeners are provided if the web is more than d/85. Vertical stiffeners are provided if the web is less than d/85 but more than d/200. Vertical +1horizontal stiffeners are provided if the web is more than d/200 but less than d/250 (in this case this 1 horizontal stiffener is usual to place at 2/5th of the depth of neutral axis from the compression flange). Vertical +2 horizontal stiffeners are provided if the web is less than d/250 (in this case this 2nd horizontal stiffener is usually placed at neutral axis).

 Partha said: (Aug 18, 2019) The answer is fine if you consider the following case as vertical stiffened web plate. Here min web thickness is concerned so d/250 is the correct answer. Vertical +1horizontal stiffeners are provided if the web is more than d/200 but less than d/250 (in this case this 1 horizontal stiffener is usual to place at 2/5th of the depth of neutral axis from the compression flange).

 Pramit Samanta said: (Jun 17, 2020) It's 180 or section will fail in shear before bucking.

 Sanku said: (Oct 11, 2020) The right answer should be option A.