## VAC3042 Assignment 2 Dual-pipe water supply system 2015 Preamble: In the interests of a sustainable future a regional water agency, in conjunction with a private sector investor, intends to develop a new urban release area to house over 12000 people. Your consultancy firm of hydraulic engineering designers has been given the task of performing a preliminary engineering design of a sustainable dual-pipe water supply system, including a potable water treatment plant, to serve this residential development. Design/Project Brief: The ‘Client’ requires a preliminary design for a dual-pipe water supply distribution system and a potable water treatment plant to serve 3500 equivalent tenements (ET) in a proposed new residential development. The design of the distribution pipes, service storages and pumps is to be based on the typical maximum day demand patterns given in the HE Lecture Notes, the schematic diagram and the additional data provided below. The potable water (PW) supply is to be gravity fed from a water treatment plant (WTP) at T as supply from reservoir R is of poor quality (i.e. turbidity 10-15 NTU, true colour 15-30 HU, and minor taste and odour problems). Wastewater from the residential development will be piped to the wastewater treatment plant, (WWTP) labeled A, using a SewerPlex NuSewer reticulation system (not shown), where it will be treated to provide reclaimed water to Class A standard. The Class A non-drinking water (NDW) supply is to be used for toilet flushing, car washing and garden watering and will be a boosted system fed from a 12ML reclaimed water store located in the WWTP. R P/S POS High Level Zone T 1500 ET E J F (RL74m) K (RL74m) Pipe lengths: TJ = 8.80km JL = 4.07km JK = 1.46km EF = 1.50km P/S C (RL66m) Freeway Low Level Zone POS 2000 ET L M (RL54m) D (RL54m) P/S B Pipe lengths: AB = 6.43km LM = 1.39km POS BD = 1.59km BE = 3.96km A Not to Scale All distribution pipes to be 5mm spiral welded steel pipe with cement lining (Use data sheet provided). Base (or ground) levels for tanks and operational water levels (OWL) for storages: Tank B Base level = 85.3m Tank E Base level = 118.1m Tank J Base level = 117.3m Tank L Base level = 89.3m WWTP storage at A Minimum OWL = RL30m, maximum OWL = RL32m WTP storage at T Minimum OWL = RL135m, maximum OWL = RL137m Other conditions and design criteria: Average occupancy rate = 3.5 persons per household Minimum residual head at entrance to water supply reticulation systems is to be 25m Assume all on-ground service storage tanks are 16m in diameter Allow 0.7m for the unusable dead volume and 0.6m clearance from FSL to top of each tank Fire flow of 20 L/s for 4 hours duration is to be taken from PW supply Pumps at A and C are to operate from 3am to 9pm on days of maximum demand The pump station at C is at RL66m and is midway between B and E. The profile of pipeline BE is concave with the low point at C Allow 6 hours breakdown volume in the NDW system Allow 12 hours breakdown volume in the PW system Assume an efficiency of 75% for pumps Ignore minor system losses and any waterhammer effects Design of the tank top-up pumps is not required Use the Hazen-Williams design chart for pipe sizing and assume C = 120 Assume the available daily NDW recycled flow from the NuSewer system to be 80% of the sanitary flow rate (SF) to the WWTP Detention times: Raw water storage (6 hours), clear water/chlorine contact storage (9 hours) Clarifier design criteria: detention time 1.8 hours, maximum surface loading rate 72 m/d, inlet pipe 2m diameter, 60° side wall slope, tank base 7.1m2, other guidelines from lecture notes Filter design criteria: multi-media filters, normal filtration rate 6 m/hr, maximum filtration rate when one filter is being backwashed 10 m/hr, other guidelines from lecture notes There is no design required for the PW, NDW and sewer reticulation systems. Use Google to obtain any required information about the NuSewer system. Data sheet for spiral welded steel pipe with cement lining TASKS: For this assignment it is recommended that students work in groups of three or four. Groups of three are required to address tasks 1 to 6 inclusive. Groups of four are required to address all seven tasks. 1. Determine all the volume components, total capacity and overall height required for each service storage tank. In each case provide an elevation sketch showing the various volume components and their respective levels. Show all calculations. (a) Tank B, (b) Tank E, (c) Tank J, (d) Tank L. (5 marks) 2. Design the NDW distribution system pipelines first. In each case provide a sketch of the layout showing all pertinent levels and the HGL. Show all calculations. (a) Pipe AB & pump capacity, (b) Pipe BD, (c) Pipe BE & pump capacity, (d) Pipe EF. (3 marks) 3. Design the PW distribution system pipelines second. In each case provide a sketch of the layout showing all pertinent levels and the HGL. Include an appropriate estimate for any top-up flow required. Show all calculations. (a) Pipe TJ, (b) Pipe JL, (c) Pipe JK, (d) Pipe LM. (2 marks) 4. Provide a detailed and fully labeled sketch of the proposed layout for the pipes, pumps and valves in the pumping station at C. (1 mark) 5. Provide a brief discussion explaining why the top-up pumps are required in this scheme, describe possible circumstances which would require them to come into operation, and estimate the maximum required daily volume of top-up water in ML. (1 mark) 6. (a) Prepare a detailed and fully labeled schematic plan layout diagram of the WTP at T comprising the following unit processes:- raw water store, upflow sludge blanket clarifiers, rapid gravity filters, and chlorine contact tank/clear water storage, and any other components considered desirable. Carry out a detailed design, including dimensions of each unit, and prepare fully labeled schematic diagrams with dimensions, of the clarifiers and rapid gravity filters. Show all calculations. (6 marks) (b) Prepare a detailed and fully labeled schematic plan layout diagram of the WTP at T if DAF units are adopted instead of clarifiers. (2 marks) 7. Your design team is required to prepare a 15-minute Powerpoint presentation that would be suitable for inclusion in an Engineers Australia water group meeting on sustainable water supply projects. The presentation is limited to 10 to 15 Powerpoint slides aimed at providing an overview of this project and a general discussion of the benefits of dual-pipe water supply systems to an audience of professional engineers, academics and engineering students, most of whom would have little prior knowledge of the project. Submit the presentation as a .ppt file emailed to my VU address by the due date. (4 marks) Set out the design calculations, sketches, tabulations, diagrams, etc…, in the order listed above, in a concise, informative, fully detailed and comprehensive group report prepared to professional engineering standards (including clear explanations of all assumptions made). Up to five marks will be deducted if a half page executive summary, a table of contents, a half page introduction, this design brief, and a half page conclusion/discussion is not included in your report. The assessment for groups of four persons will based on the following formula: Final mark out of 20 = 80% of the total assessed mark for tasks 1 to 6 + the assessed mark for task 7 The report for this assignment is due by 4.00pm on Tuesday 22nd September (i.e. in week 10), and should be submitted via my mailbox. It is worth 20% of the overall semester marks. Bob Shipton 16 July 2015

info@checkyourstudy.com

## Assignment 3 Due: 11:59pm on Friday, February 14, 2014 You will receive no credit for items you complete after the assignment is due. Grading Policy Problem 2.68 As a science project, you drop a watermelon off the top of the Empire State Building, 320 m above the sidewalk. It so happens that Superman flies by at the instant you release the watermelon. Superman is headed straight down with a speed of 36.0 . Part A How fast is the watermelon going when it passes Superman? Express your answer with the appropriate units. ANSWER: Correct Problem 2.63 A motorist is driving at when she sees that a traffic light ahead has just turned red. She knows that this light stays red for , and she wants to reach the light just as it turns green again. It takes her to step on the brakes and begin slowing. Part A What is her speed as she reaches the light at the instant it turns green? Express your answer with the appropriate units. ANSWER: m/s 72.0 ms 20 m/s 200 m 15 s 1.0 s 5.71 ms Correct Conceptual Question 4.1 Part A At this instant, is the particle in the figurespeeding up, slowing down, or traveling at constant speed? ANSWER: Correct Part B Is this particle curving to the right, curving to the left, or traveling straight? Speeding up Slowing down Traveling at constant speed ANSWER: Correct Conceptual Question 4.2 Part A At this instant, is the particle in the following figure speeding up, slowing down, or traveling at constant speed? ANSWER: Curving to the right Curving to the left Traveling straight Correct Part B Is this particle curving upward, curving downward, or traveling straight? ANSWER: Correct Problem 4.8 A particle’s trajectory is described by and , where is in s. Part A What is the particle’s speed at ? ANSWER: The particle is speeding up. The particle is slowing down. The particle is traveling at constant speed. The particle is curving upward. The particle is curving downward. The particle is traveling straight. x = ( 1 −2 ) m 2 t3 t2 y = ( 1 −2t) m 2 t2 t t = 0 s v = 2 m/s Correct Part B What is the particle’s speed at ? Express your answer using two significant figures. ANSWER: Correct Part C What is the particle’s direction of motion, measured as an angle from the x-axis, at ? Express your answer using two significant figures. ANSWER: Correct Part D What is the particle’s direction of motion, measured as an angle from the x-axis, at ? Express your answer using two significant figures. ANSWER: t = 5.0s v = 18 m/s t = 0 s = -90 counterclockwise from the +x axis. t = 5.0s = 9.7 counterclockwise from the +x axis. Correct Problem 4.9 A rocket-powered hockey puck moves on a horizontal frictionless table. The figure shows the graph of and the figure shows the graph of , the x- and y-components of the puck’s velocity, respectively. The puck starts at the origin. Part A In which direction is the puck moving at = 3 ? Give your answer as an angle from the x-axis. Express your answer using two significant figures. ANSWER: Correct Part B vx vy t s = 51 above the x-axis How far from the origin is the puck at 5 ? Express your answer to two significant figures and include the appropriate units. ANSWER: Correct Enhanced EOC: Problem 4.13 A rifle is aimed horizontally at a target 51.0 away. The bullet hits the target 1.50 below the aim point. You may want to review ( pages 91 – 95) . For help with math skills, you may want to review: Quadratic Equations Part A What was the bullet’s flight time? Express your answer with the appropriate units. Hint 1. How to approach the problem Start by drawing a picture of the bullet’s trajectory, including where it leaves the gun and where it hits the target. You can assume that the gun was held parallel to the ground. Label the distances given in the problem. Choose an x-y coordinate system, making sure to label the origin. It is conventional to have x in the horizontal direction and y in the vertical direction. What is the y coordinate when the bullet leaves the gun? What is the y coordinate when it hits the target? What is the initial velocity in the y direction? What is the acceleration in the y direction? What is the equation that describes the motion in the vertical y direction as a function of time? Can you use the equation for to determine the time of flight? Why was it not necessary to include the motion in the x direction? s s = 180 cm m cm y(t) y(t) ANSWER: Correct Part B What was the bullet’s speed as it left the barrel? Express your answer with the appropriate units. Hint 1. How to approach the problem In the coordinate system introduced in Part A, what are the x coordinates when the bullet leaves the gun and when it hits the target? Is there any acceleration in the x direction? What is the equation that describes the motion in the horizontal x direction as a function of time? Can you use the equation for to determine the initial velocity? ANSWER: Correct Introduction to Projectile Motion Learning Goal: To understand the basic concepts of projectile motion. Projectile motion may seem rather complex at first. However, by breaking it down into components, you will find that it is really no different than the one-dimensional motions that you have already studied. One of the most often used techniques in physics is to divide two- and three-dimensional quantities into components. For instance, in projectile motion, a particle has some initial velocity . In general, this velocity can point in any direction on the xy plane and can have any magnitude. To make a problem more managable, it is common to break up such a quantity into its x component and its y component . 5.53×10−2 s x(t) x(t) 922 ms v vx vy Consider a particle with initial velocity that has magnitude 12.0 and is directed 60.0 above the negative x axis. Part A What is the x component of ? Express your answer in meters per second. ANSWER: Correct Part B What is the y component of ? Express your answer in meters per second. ANSWER: Correct Breaking up the velocities into components is particularly useful when the components do not affect each other. Eventually, you will learn about situations in which the components of velocity do affect one another, but for now you will only be looking at problems where they do not. So, if there is acceleration in the x direction but not in the y direction, then the x component of the velocity will change, but the y component of the velocity will not. Part C Look at this applet. The motion diagram for a projectile is displayed, as are the motion diagrams for each component. The x-component motion diagram is what you would get if you shined a spotlight down on the particle as it moved and recorded the motion of its shadow. Similarly, if you shined a spotlight to the left and recorded the particle’s shadow, you would get the motion diagram for its y component. How would you describe the two motion diagrams for the components? ANSWER: v m/s degrees vx v vx = -6.00 m/s vy v vy = 10.4 m/s Correct As you can see, the two components of the motion obey their own independent kinematic laws. For the vertical component, there is an acceleration downward with magnitude . Thus, you can calculate the vertical position of the particle at any time using the standard kinematic equation . Similarly, there is no acceleration in the horizontal direction, so the horizontal position of the particle is given by the standard kinematic equation . Now, consider this applet. Two balls are simultaneously dropped from a height of 5.0 . Part D How long does it take for the balls to reach the ground? Use 10 for the magnitude of the acceleration due to gravity. Express your answer in seconds to two significant figures. Hint 1. How to approach the problem The balls are released from rest at a height of 5.0 at time . Using these numbers and basic kinematics, you can determine the amount of time it takes for the balls to reach the ground. ANSWER: Correct This situation, which you have dealt with before (motion under the constant acceleration of gravity), is actually a special case of projectile motion. Think of this as projectile motion where the horizontal component of the initial velocity is zero. Both the vertical and horizontal components exhibit motion with constant nonzero acceleration. The vertical component exhibits motion with constant nonzero acceleration, whereas the horizontal component exhibits constant-velocity motion. The vertical component exhibits constant-velocity motion, whereas the horizontal component exhibits motion with constant nonzero acceleration. Both the vertical and horizontal components exhibit motion with constant velocity. g = 10 m/s2 y = y0 + v0 t + (1/2)at2 x = x0 + v0 t m tg m/s2 m t = 0 s tg = 1.0 s Part E Imagine the ball on the left is given a nonzero initial speed in the horizontal direction, while the ball on the right continues to fall with zero initial velocity. What horizontal speed must the ball on the left start with so that it hits the ground at the same position as the ball on the right? Remember that the two balls are released, starting a horizontal distance of 3.0 apart. Express your answer in meters per second to two significant figures. Hint 1. How to approach the problem Recall from Part B that the horizontal component of velocity does not change during projectile motion. Therefore, you need to find the horizontal component of velocity such that, in a time , the ball will move horizontally 3.0 . You can assume that its initial x coordinate is . ANSWER: Correct You can adjust the horizontal speeds in this applet. Notice that regardless of what horizontal speeds you give to the balls, they continue to move vertically in the same way (i.e., they are at the same y coordinate at the same time). Problem 4.12 A ball thrown horizontally at 27 travels a horizontal distance of 49 before hitting the ground. Part A From what height was the ball thrown? Express your answer using two significant figures with the appropriate units. ANSWER: vx m vx tg = 1.0 s m x0 = 0.0 m vx = 3.0 m/s m/s m h = 16 m Correct Enhanced EOC: Problem 4.20 The figure shows the angular-velocity-versus-time graph for a particle moving in a circle. You may want to review ( page ) . For help with math skills, you may want to review: The Definite Integral Part A How many revolutions does the object make during the first 3.5 ? Express your answer using two significant figures. You did not open hints for this part. ANSWER: s n = Incorrect; Try Again Problem 4.26 To withstand “g-forces” of up to 10 g’s, caused by suddenly pulling out of a steep dive, fighter jet pilots train on a “human centrifuge.” 10 g’s is an acceleration of . Part A If the length of the centrifuge arm is 10.0 , at what speed is the rider moving when she experiences 10 g’s? Express your answer with the appropriate units. ANSWER: Correct Problem 4.28 Your roommate is working on his bicycle and has the bike upside down. He spins the 60.0 -diameter wheel, and you notice that a pebble stuck in the tread goes by three times every second. Part A What is the pebble’s speed? Express your answer with the appropriate units. ANSWER: Correct 98 m/s2 m 31.3 ms cm 5.65 ms Part B What is the pebble’s acceleration? Express your answer with the appropriate units. ANSWER: Correct Enhanced EOC: Problem 4.43 On the Apollo 14 mission to the moon, astronaut Alan Shepard hit a golf ball with a 6 iron. The acceleration due to gravity on the moon is 1/6 of its value on earth. Suppose he hits the ball with a speed of 13 at an angle 50 above the horizontal. You may want to review ( pages 90 – 95) . For help with math skills, you may want to review: Quadratic Equations Part A How much farther did the ball travel on the moon than it would have on earth? Express your answer to two significant figures and include the appropriate units. Hint 1. How to approach the problem Start by drawing a picture of the path of the golf ball, showing its starting and ending points. Choose a coordinate system, and label the origin. It is conventional to let x be the horizontal direction and y the vertical direction. What is the initial velocity in the x and y directions? What is the acceleration in the x and y directions on the moon and on the earth? What are the equations for and as a function of time, and , respectively? What is the y coordinate when the golf ball hits the ground? Can you use this information to determine the time of flight on the moon and on the earth? 107 m s2 m/s x y x(t) y(t) Once you have the time of flight, how can you use the equation to determine the total distance traveled? Compare the distance traveled on the moon to the distance traveled on the earth . ANSWER: Correct Part B For how much more time was the ball in flight? Express your answer to two significant figures and include the appropriate units. Hint 1. How to approach the problem What is the equation describing as a function of time? What is the initial x component of the ball’s velocity? How are the initial x component of the ball’s velocity and the distance traveled related to the time of flight? What is the difference between the time of flight on the moon and on earth? ANSWER: Correct Problem 4.42 In the Olympic shotput event, an athlete throws the shot with an initial speed of 12 at a 40.0 angle from the horizontal. The shot leaves her hand at a height of 1.8 above the ground. x(t) L = 85 m x(t) x t = 10 s m/s m Part A How far does the shot travel? Express your answer to four significant figures and include the appropriate units. ANSWER: Correct Part B Repeat the calculation of part (a) for angles of 42.5 , 45.0 , and 47.5 . Express your answer to four significant figures and include the appropriate units. ANSWER: Correct Part C Express your answer to four significant figures and include the appropriate units. ANSWER: Correct Part D x = 16.36 m x(42.5 ) = 16.39 m x(45.0 ) = 16.31 m Express your answer to four significant figures and include the appropriate units. ANSWER: Correct Part E At what angle of release does she throw the farthest? ANSWER: Correct Problem 4.44 A ball is thrown toward a cliff of height with a speed of 32 and an angle of 60 above horizontal. It lands on the edge of the cliff 3.2 later. Part A How high is the cliff? Express your answer to two significant figures and include the appropriate units. ANSWER: x(47.5 ) = 16.13 m 40.0 42.5 45.0 47.5 h m/s s h = 39 m Answer Requested Part B What was the maximum height of the ball? Express your answer to two significant figures and include the appropriate units. ANSWER: Correct Part C What is the ball’s impact speed? Express your answer to two significant figures and include the appropriate units. ANSWER: Correct Problem 4.58 A typical laboratory centrifuge rotates at 3600 . Test tubes have to be placed into a centrifuge very carefully because of the very large accelerations. Part A What is the acceleration at the end of a test tube that is 10 from the axis of rotation? Express your answer with the appropriate units. hmax = 39 m v = 16 ms rpm cm ANSWER: Correct Part B For comparison, what is the magnitude of the acceleration a test tube would experience if dropped from a height of 1.0 and stopped in a 1.7-ms-long encounter with a hard floor? Express your answer with the appropriate units. ANSWER: Correct Problem 4.62 Communications satellites are placed in a circular orbit where they stay directly over a fixed point on the equator as the earth rotates. These are called geosynchronous orbits. The radius of the earth is , and the altitude of a geosynchronous orbit is ( 22000 miles). Part A What is the speed of a satellite in a geosynchronous orbit? Express your answer with the appropriate units. ANSWER: Correct a = 1.42×104 m s2 m a = 2610 m s2 6.37 × 106m 3.58 × 107m v = 3070 ms Part B What is the magnitude of the acceleration of a satellite in a geosynchronous orbit? Express your answer with the appropriate units. ANSWER: Correct Score Summary: Your score on this assignment is 89.5%. You received 103.82 out of a possible total of 116 points. a = 0.223 m s2

please email info@checkyourstudy.com

## Advertising and Critical Analysis For this essay you will examine a selection of commercials. This essay will require that you engage in some in-depth examination of 3-4 commercials. This “close viewing” of the commercials should lead you to a thesis that answers a question such as “Who do the advertisers think that I am?” or “What do these commercials say about us?” You need to do more than simply list some commercials and summarize them – although it is important that you summarize the commercials so that the reader can “see” them. A strong essay will look deeper into the commercial and its product – it will go beyond what is simply stated and instead examine the tangible elements of the commercial as well as what is underlying or unspoken in the advertisement. While writing this, here are some things to consider: • Besides the actual product, what else is the ad selling or promoting? • What human instinct, desire, or shortcoming is the ad playing to? • What is used to make the sale and turn consumers into customers (humor, sex, youth, etc.)? • How do these ads work in conjunction with the show during which they are aired? • Who do you think this ad is aimed at (audience)? • Although only a short commercial, what do you think these advertisements say about American culture or the American people? Helpful hints: • Choose commercials from specific sectors or ones that deal with similar ideas (i.e. alcohol, trucks, military, disabilities, etc.). Doing this will help you come up with a tight focus and hold to your thesis throughout the essay. • This essay needs to be 5 – 6 pages of polished and delightfully insightful prose. In addition your paper needs to exhibit all the standard formatting and fonts. This essay also requires a Works Cited page carefully listing any sources referenced, including the commercials being discussed.

checkyourstudy.com Whatsapp +919911743277

## 5. Provide a brief discussion with supporting evidence to the following inquiry: With the responsibility of overseeing career development processes, how does management equip employees with skills that impact their performance in an efficient and effective manner?

Career development can facilitate we attain superior contentment and accomplishment. … Read More...