Q1: 1: Design the critical section for span 1 & 11 of the reinforced concrete one way slab bridge. Consider the span lengths in meters and the live load according to the data shown in the following table. Useful Data Width = 7.2 m Asphalt weight 1 kN / m2 Handrail weight = 1 kN / m Seat width = 400 mm - f = 25 MPa Ty = 410 MPa - T = 25 kN / m3

Apipe with an outside diameter of 15 cm is exposed to an ambient air and surrounding temperature of -20°c. the pipe has an outer surface temperature of 65°c and an emissivity of 0.85. if the rate of heat loss from the pipe surface is 0.95 kw per meter of length, the external convective heat transfer coefficient (h) is: (a) 12.5 w/m"k (b) 18.6 w/mk (c) 23.7 w/mk (d) 27.9 w/mk (e) 33.5 w/mk

An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature

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