Composite Beam Moment of Inertia & Load Calculation | RCC Competition Exam Question | SOM/RCC

Question: ​A metallic tube of internal diameter 25mm and 5mm thickness is simply supported on a span of 1m and the load at the mid-span just sufficient to bring the stress to elastic limit level, is found to be 900N. Four such tubes are firmly clamped to each other to form a single beam, the centres of the tubes forming a square of 35mm side with two sides horizontal. Calculate the maximum central load which this composite beam can carry if the stress is not to exceed elastic limit.

Struggling with Composite Beams or Moment of Inertia calculations for your upcoming Civil Engineering exams? This video breaks down a high-level competitive exam question that combines principles of Reinforced Cement Concrete (RCC) and Strength of Materials (SOM).
​In this tutorial, we solve a complex problem involving metallic tubes clamped together to form a composite section. We'll guide you through the transition from a single tube's load capacity to finding the maximum central load for a multi-tube system without exceeding the elastic limit.
​Key Concepts Covered:
​Calculating the Moment of Inertia (I) for hollow circular sections.
​Applying the Parallel Axis Theorem for composite sections.
​Using the Bending Equation to find stress and load capacity.
​Relationship between load, span, and maximum bending moment for simply supported beams.
​This problem is a classic example of what you might encounter in GATE, ESE (IES), SSC JE, or State PSC exams. Watch until the end to see the mathematical shortcut for handling the "four-tube" square configuration!
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Видео Composite Beam Moment of Inertia & Load Calculation | RCC Competition Exam Question | SOM/RCC канала Tutor Jerry