GATE Civil Engineering (CE) 2014 Shift 2 Solved Paper

The beam of an overall depth of 250 mm (shown below) is used in a building subjected to two different thermal environments. The temperatures at the top and bottom surfaces of the beam are 36°C and 72°C respectively. Considering the coefficient of thermal expansion (α) as 1.50 × 10⁻⁵ per°C, the vertical deflection of the beam (in mm) at its mid-span due to temperature gradient is ________