Chapter 14, Problem 14.7P

For the prestressed concrete beam with a straight tendon shown in Fig below which is under the prestressing force of 1620 kN, Analyze the stresses at Mid-span at transfer stage. The uniformly distribution load (self weight) = 4.75 kN/m. Then draw the stress distribution across the section mid-span. W=4.75 kN/m Δ 7.3 m F= 1620 kN 750 mm I 230 mm 500 mm

4.36 A pipe slopes upward in the direction of liquid flow at an angle of 30° with the horizontal. What is the pressure gradient in the flow direction along the pipe in terms of the specific weight of the liquid, y, if the liquid is decelerating (accelerating opposite to flow direction) at a rate of 0.3 g?

4.25 In this flow passage, the velocity is varying with time. The velocity varies with time at section A-A as 4m V-41/1-230/1 2.25- S to At time t = 0.50s, it is known that at section A-A the velocity gradient in the s direction is +2.1 m/s per meter. Given that to is 0.6 s and assuming quasi-1-D flow, answer the following questions for time t = 0.5 s: a. What is the local acceleration at A-A? b. What is the convective acceleration at A-A? A Diameter 50 cm Problem 4.25

Can you design a (Open Channel): -Most Efficient Section (Rectangle Shape) -Cost Estimate -Structural Analysis Design Requirements: Bed Slope= 1:1500 Manning's (n)= 0.015   Discharge: Q= 18 m^3/s

What is Highway engineering

Determine the vertical displacement of joint A. Each bar is made of steel and has the cross-sectional area shown. Take E = 29,000 ksi. Use the method of virtual work.

Sketch the Energy Line and the Hydraulic Grade Line through the Venturi meter. Label the contribution of each term from bernoulli equation

2. Design a storage and distribution system for the town of Waffle. The requirements are that fire protection shall be provided, the minimum water pressure at the top of the apartments is to be 240 kPa and the maximum system pressure is to be 550 kPa. The following assumptions may be used: Each of the four apartment buildings is occupied by 50 residents. Each apartment building is four stories high. Each story is 3 meters high. Each house is occupied by three residents. Average daily demand for the village is 500 Lpcd and the peak hourly demand factor is 6.2. Needed fire flow for the houses is 230 m3/h. and for apartment building is 500 m3/h, with 2 h duration. System pressure is to be provided from the elevated storage tank. Minor pressure losses in buildings may be ignored. The distribution system will not contain any loops. Assume that emergency supply (ES), fire department supply (FDS) or off peak pumping are not provided (they are all equal to zero). Provide the following…

1. The city of Ten Sleep proposes to use Crater Lake for its water supply. Water quality analysis results revealed no detectable Giardia, viruses, or Cryptosporidium in the source water (Giardia cysts <1/100 L; Viruses <1/100 L; Cryptosporidium oocysts <0.075/L). Design a disinfection system to treat 3,500 m³/d by direct filtration and chlorine dioxide (CIO2) will be used as a primary disinfectant. The filtered water has a pH of 7.5 and a temperature of 5°C. Provide the following information for your design: • Determine the total removal/inactivation required for disinfection for each pathogen group • Determine the required CT value to achieve the required inactivation for the design conditions (pH, temperature)