GATE CE 2023 Set 2 — Question 40
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Structural Engineering → Connections & Plastic Analysis → Welded Connections
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Question
Two plates are connected by fillet welds of size 10 mm and subjected to tension, as shown in the figure. The thickness of each plate is 12 mm. The yield stress and the ultimate stress of steel under tension are 250 MPa and 410 MPa, respectively. The welding is done in the workshop (partial safety factor, ). As per the Limit State Method of IS 800: 2007, what is the minimum length (in mm, rounded off to the nearest higher multiple of 5 mm) required of each weld to transmit a factored force equal to 275 kN?
Correct answer
(B) 105
Solution
Given:
Weld size, mm
Throat thickness, mm (assuming fusion angle)
Ultimate stress of weld, MPa
Partial safety factor for workshop weld,
Factored force, kN NDesign strength of fillet weld per unit length ():Total length of weld required ():Since there are two welds (one on each side), the length of each weld ():Rounding off to the nearest higher multiple of 5 mm:Thus, the correct option is (B).
Weld size, mm
Throat thickness, mm (assuming fusion angle)
Ultimate stress of weld, MPa
Partial safety factor for workshop weld,
Factored force, kN NDesign strength of fillet weld per unit length ():Total length of weld required ():Since there are two welds (one on each side), the length of each weld ():Rounding off to the nearest higher multiple of 5 mm:Thus, the correct option is (B).
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