3. A manual bar screen is to be used in an approach channel with a maximum velocity of 0.54 m/s and a design flow of 0.45 m's. The bars are 25 mm thick and openings are 2.75 cm wide. A rectangular channel is used at the ratio between depth and width of 1.75. The angle of inclination is 60 Determine: 3.1) Cross sectional area of the channel in m 3.2) Dimension of screen in m 3.3) Velocity between bars in m/s 3.4) Number of bars in the screen 3.5) Head loss for clean screen in m 3.6) Head loss for 55% clogged screen in m