A watershed consisting of heavily wooded and grassland area drains into a culvert under a roadway. The total area of the watershed is 310 acres. The 10-year runoff coefficient has been determined to be 0.36. The 10-year and 100-year rainfall intensities have been determined to be 1.2 in/hr and 1.94 in/hr, respectively. Determine de 100-year runoff coefficient and the 10-year and 100-year design discharges to be conveyed by the culvert under the roadway.

Afoot bridge is made as a simple deck, 4 m long, with a cross section 2 m (wide) and 20 cm thick, and made of wood. the deck is supported at the two ends. the maximum load allowable on the bridge is 10 tons, provided it is uniformly distributed on the deck. to sense this load, a strain gauge is placed at the center of the bridge and its resistance is monitored. if the sensor has a nominal resistance of 350 s2 and a gauge factor of 3.6, what is the reading of the strain gauge at maximum load? the modulus of elasticity for the wood used in the construction is 10 gpa.