b= 5 m y1 = 1.5 m P = 0.60 m Sharp-crested rectangular weir

Consider the uniform flow of water in the triangular channel shown in the figure. The channel bed slope is 0.003 and the roughness coefficient is 0.025. The flow rate in the channel is 25 m³/s. What is the normal depth? a.3.48 m b.2.28 m c.4.70 m d. 1.98 m What is the critical depth? a. 1.98 m b.4.70 m c.3.48 m d.2.28 m If the flow depth at a certain section of the channel is 2 m, the flow is: a.subcritical b.critical c.supercritical d.can not be determined VAI 2 1

2.Water flows through a rectangular channel with a width b = 2 m and a height (Pw) = 1 m, the flow rate ranges from Qmin = 0.02 m^3/s and Qmax = 0.60 m^3/s. This flow rate is measured using Rectangular sharp-crested weir Triangular sharp-crested with = 90^o Broad-crested weir Plot onto the graph Q = Q(H) for each type of weir and give your analysis which type of weir is most appropriate to apply

Q4: The flow is occurring in a rectangular channel at a velocity of (571/500) m/sec and a depth of 0.2 m. Neglecting the effect of the velocity of approach & applying the relation; Q=1.84*L*H3/2, Analyze that what should be the height of a sharp-crested weir that mustbe installed to raise the water depth upstream of the weir to 1.2 m.