A steel beam supported by three parallel pin-jointed steel rods is shown in the figure. The moment of inertia of the beam is 8 x 10^7 mm^4. Take modulus of elasticity of steel as 210 GPa. The beam is subjected to uniformly distributed load of 6.25 kN/m, including its self-weight. The axial force (in kN) in the centre rod CD is ________ (round off to one decimal place).

GATE 2025 Civil Engineering Q52 — Civil Engineering

GATE 2025Set 2Q52NATanswer keyexplanation soonhard

Civil Engineering · Structural Analysis - Indeterminate Structures

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Drill mode: axial force · 2/5

Figure from the original GATE 2025 paper. (IIT Roorkee archive)

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Structural Analysis - Indeterminate Structures has appeared in GATE Civil Engineering 3 times across 2 years (2024, 2025).

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steel beampin-jointed rodsaxial forceuniformly distributed loadmodulus of elasticity