School of Civil Engineering and Surveying Course: BEng/MEng/CEM Date Set: 27/10/2016 Water & Environmental Engineering U22295 Lecturer: SM, JW Date Due: 05/12/2016 Artefact: Coursework (1000 words) Ref: SUBMIT BY 11.00PM Objectives: • To extend knowledge gained in lectures by undertaking some numerical examples individually • To develop an ability to search for information related to the subject and reference sources • To extend knowledge of environmental issues in water engineering Task: Undertake four questions as per the moodle site under Coursework. Submit electronically via turnitin on the moodle site. Use a scan of your handwritten work if necessary. Please: • Include the submission cover sheet at the front of your submission • Use your student ID at the start of the file name • Remember that your name should not appear anywhere on the assignment • Submit as a single pdf – max size 20MB Work submitted after the deadline (11.00PM on 5 December 2016) must be submitted via turnitin in the late submission inbox Learning outcomes: On successful completion of this assignment students will be expected to be able to: 1. Recognise importance of analytical principles of fluid mechanics 2. Apply the principles of fluid mechanics to a range of common engineering problems 3. Assess the technical and regulatory aspects of the impact of water engineering on the natural environment through a range of practical tools and theoretical approaches 4. Produce a clear logical set of solutions to a set of engineering problems Reading / References: Jackson, A. and Jackson, J., 1996, Environmental Science, 2nd Edition, Longman Kiely, G., 1997, Environmental Engineering, McGraw-Hill Hamill, L., 2011, Understanding Hydraulics, Palgrave Publishers Notes: • The assignment is worth 20% of the total unit mark. • Further guidance will be given during taught sessions. You will also find helpful guidance in the Writing section of the ASK Moodle pages. • Overall length limit is 1000 words   Grade Descriptors Mark Meaning Grade Criteria for Typical Work >=80 Excellent Excellent presentation with clear diagrams, and referencing in the Harvard style, results presented in most suitable format. Calculations all or almost completely correct and questions very well answered with excellent working 70-79 Very Good Very good presentation with the latest guidance and research papers used in selection, appropriately referenced. Calculations mainly correct and questions very well answered with appropriate working 60-69 Good Good presentation of correct info. Good referencing and citation. Calculations generally sensible, some errors in solutions. Questions generally well answered with appropriate working 50-59 Average Average presentation of correct information, good referencing and citation. Calculations generally sensible, more errors in solutions. Questions answered satisfactorily and satisfactory working 40-49 Pass Results presented in clear form with some calculation or unit errors, satisfactory discussion of results in a descriptive manner, limited referencing and citation. Questions containing significant errors, working limited 30-39 Fail Poor presentation of results, errors in calculations, superficial discussion and Inadequate referencing and citation. Working poor. <30 Unsatisfactory Poor presentation of results, errors in calculations, no discussion. Not Referenced, no citations, and over-reliant on "information" taken directly from internet sources. No working shown. U22295 Water and Environmental Engineering Coursework Show all necessary working and present your work as clearly and logically as possible. State clearly any assumptions made. Density of fresh water = 1000 kg/m3, g = 9.8 m/s2 Question 1 a) Explain the impacts that development can have on downstream flood risk and describe the engineering interventions that be used to reduce this impact. [15 Marks] b) The 10mm 1Hr TUH ordinates for the Rabid Badger River are shown in Table 1. Table 1: 10 mm 1 h TUH ordinates T, Hr 0 1 2 3 4 5 6 7 8 Q, m3/s 0 2 11 21 17 8 2 1 0 Calculate the peak flow from a storm where XX mm of effective rain falls in the first hour followed by YY mm in the second hour and ZZ mm in the third hour. First calculate the storm hydrograph and then plot it in a well presented graph to find the peak flow. XX = first 2 numbers of your Student ID, YY = second two numbers, ZZ = last two numbers. [10 Marks] Question 2 a) Describe the stages of sewage treatment seen in a typical UK Sewage Works. [8 Marks] b) Identify the main requirements of the EU Urban Wastewater Treatment and Water Framework Directives. [8 Marks] c) Compare the number and dimensions of a rapid gravity sand filter (10 m/h) and a slow sand filter (0.15 m/h) treating XXX,XXX population with a water use of 150 l/d.pe. Comment on the differences in land area and water quality and assess the implications for where these systems are commonly used. XXX,XXX = your Student ID [9 Marks] Question 3 A square-shaped pontoon with side 6 m is shown below in plan and section. It has a mass of 11.0 tonnes and its dimensions are as shown. If it is to carry an additional uniformly distributed weight W equal to X.Y tonnes, calculate (a) Depth of immersion ds for the loaded and unloaded case (b) Height of the metacentre above the base of the pontoon, for the loaded and unloaded case (c) The maximum allowable extra (i.e., additional to W) vertical load P on the edge to ensure the tilt of the pontoon does not exceed 1 degree. Assume a Centre of Gravity level with the deck (top) of the pontoon [5, 10, 10 marks] X, Y are respectively the third and fourth digits of your Student ID. If your Student number is 123456 then W = 3.4 tonnes Question 4 An underwater gate is hinged as shown. Calculate the force F required to cause the gate to open, per unit width. Angle α that the gate makes with the vertical is (xy/2)°, where respectively x and y are the fourth and fifth digits of your student ID. So, if your student number is 123456, the angle is 22.5 degrees. [25 marks]