Water Resources Engineering 16/08/2020 QUESTION 1) Arrangement works will be carried out in the downstream region of a river with trapezoid section and slope slopes. The project flow, which is the basis for the regulation, is 872.15 m3 / sec.). The slope of the stream is known as 0.0008 and the roughness coefficient (Manning) as 0.024. The sieve diameter (median diameter) passing 50% of the bed material carried in the stream is 32 mm. The specific weight of the material is 2.15 t/m3, A) Calculate the required cross-section width and water depth with a confidence of 2 times the critical equilibrium (= critical shear stress) to avoid scour and corrosion at the bottom of the stream. B) Provided that all the criteria given in the question remain the same, calculate what the duct dimensions would have been if the same flow rate was made subject to regulation by flowing in a rectangular channel with equivalent water height. QUESTION 2) Below are the annual average velocity measurements and suspension concentrations at certain heights from the bottom (in the vertical of the selected points on the bottom and the banks of the stream) in a stream arrangement section with a depth of 4.5 m and a bottom slope of 0.0006 A) Find the amount of suspension material passing through the cross section. B) Calculate how many tons of suspension material passes through this section in a year The specific gravity of the suspended material is 2.7 ton /m3, the sedimentation rate is 2.5 cm / sec, the Von Karmen coefficient is 0.3,8 = 9,81 m/sec2. Note: cross section measurements are on sizem. 2.0 N. No 1=5 ve 2=3=4 kesitleri z (m) V(m/sn.). C(m/10m') 0,00 0,05 1025 0,22 0,1 846 0,80 0,5 785 1,15 0,9 700 2,50 1,2 487 1,5 220 3,50 2,5 180 4,50 2,0 140 4,5 2.5 2,13 2 10 10 2 3 QUESTION 3) We know that special attention should be paid to the determination of intermediate distances for the spurs to be effective as the regulatory structure. Since the water in a spur area must flow in a circling motion 2 g L c? h Prove the validity of the statement. (R = h can be taken.) QUESTION 4) The 12.15 km long curved section of a stream will be arranged by a 4 km long gully. In the streambed, the water depth formed for the flood flow of 640 m3 / sec is 2.15 m and the bottom slope is 0.0005. The cross section is trapezoidal and the slope slopes are 1:2. The manning coefficient of the bed in the riverbed and rift channel is 0.025 and the water depth is accepted instead of the hydraulic radius. In the flood pass, the shear stress in the junction is required to be 75% equivalent to the shear stress in the river bed. Based on these data: A) Find the water depth in the gully, B) Find the base elevation of the gully channel so that the water surfaces in the streambed and in the gully are equal Water Resources Engineering 16/08/2020 QUESTION 1) Arrangement works will be carried out in the downstream region of a river with trapezoid section and slope slopes. The project flow, which is the basis for the regulation, is 872.15 m3 / sec.). The slope of the stream is known as 0.0008 and the roughness coefficient (Manning) as 0.024. The sieve diameter (median diameter) passing 50% of the bed material carried in the stream is 32 mm. The specific weight of the material is 2.15 t/m3, A) Calculate the required cross-section width and water depth with a confidence of 2 times the critical equilibrium (= critical shear stress) to avoid scour and corrosion at the bottom of the stream. B) Provided that all the criteria given in the question remain the same, calculate what the duct dimensions would have been if the same flow rate was made subject to regulation by flowing in a rectangular channel with equivalent water height. QUESTION 2) Below are the annual average velocity measurements and suspension concentrations at certain heights from the bottom (in the vertical of the selected points on the bottom and the banks of the stream) in a stream arrangement section with a depth of 4.5 m and a bottom slope of 0.0006 A) Find the amount of suspension material passing through the cross section. B) Calculate how many tons of suspension material passes through this section in a year The specific gravity of the suspended material is 2.7 ton /m3, the sedimentation rate is 2.5 cm / sec, the Von Karmen coefficient is 0.3,8 = 9,81 m/sec2. Note: cross section measurements are on sizem. 2.0 N. No 1=5 ve 2=3=4 kesitleri z (m) V(m/sn.). C(m/10m') 0,00 0,05 1025 0,22 0,1 846 0,80 0,5 785 1,15 0,9 700 2,50 1,2 487 1,5 220 3,50 2,5 180 4,50 2,0 140 4,5 2.5 2,13 2 10 10 2 3 QUESTION 3) We know that special attention should be paid to the determination of intermediate distances for the spurs to be effective as the regulatory structure. Since the water in a spur area must flow in a circling motion 2 g L c? h Prove the validity of the statement. (R = h can be taken.) QUESTION 4) The 12.15 km long curved section of a stream will be arranged by a 4 km long gully. In the streambed, the water depth formed for the flood flow of 640 m3 / sec is 2.15 m and the bottom slope is 0.0005. The cross section is trapezoidal and the slope slopes are 1:2. The manning coefficient of the bed in the riverbed and rift channel is 0.025 and the water depth is accepted instead of the hydraulic radius. In the flood pass, the shear stress in the junction is required to be 75% equivalent to the shear stress in the river bed. Based on these data: A) Find the water depth in the gully, B) Find the base elevation of the gully channel so that the water surfaces in the streambed and in the gully are equal