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Two steel plates, each of 12 mm thickness, are connected by a double-cover butt joint by bolts as shown in figure below. If the bolt diameter is 20 mm and steel is of grade Fe 410, which one of the following sections is the most critical section for a cover plate?
  • a)
    Section 1-1
  • b)
    Section 2-2
  • c)
    Section 3-3
  • d)
    Both the Sections 1-1 and 2-2
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Two steel plates, each of 12 mm thickness, are connected by a double-...
Critical section for Cover Plate
The cross-sectional area of the plate through various sections.
Let the width of the plate be ‘b’, the thickness of plate ‘t’ and diameter of the hole be ‘dh’
For section 1-1: Asection 1-1 = (b – 3 dh) × t
For section 2-2: Asection 2-2 = (b – 2 dh) × t
For section 3-3: Asection 3-3 = (b – 1 dh) × t
∴ Critical section for the cover plate is section 1-1 as the cross-sectional area is least.
Critical section for Main Plate:
For main plate, although the cross-sectional area is minimum at section 1-1 maximum force is resisted at section 3-3 as force is first experienced at section 3-3 and the remaining is then transferred to section 2-2 and section 1-1 respectively.
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Two steel plates, each of 12 mm thickness, are connected by a double-cover butt joint by bolts as shown in figure below. If the bolt diameter is 20 mm and steel is of grade Fe 410, which one of the following sections is the most critical section for a cover plate?a)Section 1-1b)Section 2-2c)Section 3-3d)Both the Sections 1-1 and 2-2Correct answer is option 'A'. Can you explain this answer?
Question Description
Two steel plates, each of 12 mm thickness, are connected by a double-cover butt joint by bolts as shown in figure below. If the bolt diameter is 20 mm and steel is of grade Fe 410, which one of the following sections is the most critical section for a cover plate?a)Section 1-1b)Section 2-2c)Section 3-3d)Both the Sections 1-1 and 2-2Correct answer is option 'A'. Can you explain this answer? for Railways 2024 is part of Railways preparation. The Question and answers have been prepared according to the Railways exam syllabus. Information about Two steel plates, each of 12 mm thickness, are connected by a double-cover butt joint by bolts as shown in figure below. If the bolt diameter is 20 mm and steel is of grade Fe 410, which one of the following sections is the most critical section for a cover plate?a)Section 1-1b)Section 2-2c)Section 3-3d)Both the Sections 1-1 and 2-2Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Railways 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Two steel plates, each of 12 mm thickness, are connected by a double-cover butt joint by bolts as shown in figure below. If the bolt diameter is 20 mm and steel is of grade Fe 410, which one of the following sections is the most critical section for a cover plate?a)Section 1-1b)Section 2-2c)Section 3-3d)Both the Sections 1-1 and 2-2Correct answer is option 'A'. Can you explain this answer?.
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