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HNCB 038 Hydraulic Principles And Applications
|Qualification||Unit number and Title|
|HNC/D Construction and the Built Environment||HNCB 038 Hydraulic Principles and Applications|
|Student Name||Assessor||Internal Verifier|
|T. Frank||F Khan|
|Date issued||Final Submission|
|2nd Feb 2015||24th May 2015|
|Assignment title||Hydraulic Principles for Civil Engineering|
|Learning Outcome||Learning Outcome||Assessment Criteria||In this assignment you will have the opportunity to present evidence that shows you are able to:||Task no||Evidence (Page no)|
|1||Be able to solve engineering hydrostatic problems||1.1||explain the construction and application of pressure measuring devices||1.1|
|1.2||carry out calculations to determine the magnitude and position of hydrostatic forces||1.2|
|2||Be able to solve engineering flow problems||2.1||carry out calculations for pipeline flow problems||2.1 , 2.2,|
|2.2||carry out calculations for open channel flow problems||2.4, 2.5,|
|3||Be able to match pumps to demands|
of specific systems
|3.1||carry out calculations to match pump(s) to the requirements of a specific system||3.1, 3.2|
|4||Be able to undertake hydraulic experimental procedures||4.1||carry out laboratory investigations into hydraulic|
separate laboratory report book
|4.2||produce reports on the findings of hydraulic laboratory investigations|
I certify that the work submitted for this assignment is my own and research sources are fully acknowledged.
Student signature: Date:
|In addition to the above Pass Criteria, this assignment gives you opportunity to submit evidence in order to achieve the following MERIT and DISTINCTION grades|
|Grade Descriptor||Indicative characteristic/s||Contextualisation|
M1 Identify and apply strategies to find appropriate solutions
|Correct choice of procedures to solve problems such as those in|
1.1 and 1.2, 2.1, 2.3, 2.5, 2.6 and
|Each these will need a clear strategy that must be obvious to the reader|
|M2 Select/design and apply appropriate methods/techniques||This requires a clear understanding of techniques and the reason for their|
|Particularly important are the calculation techniques used throughout. Tasks 1.1 and 1.2, 2.1, especially parts v, to vii. 2.3 iii to v, and 3.1 How the practical results have been manipulated to obtain the required information system.|
|M3 Present and communicate|
|Clear presentation so that it easy for the reader to assimilate the information||This needs clear presentations of both calculations and of methods and techniques throughout including the calculations and conclusions in task 4 on the practical handbook|
|D1 Use critical reflection to evaluate own work and justify valid conclusion||The most obvious sign of this is to present a reflective paragraph at the end of the report showing how the|
i) put together and referenced and
ii) what improvements in learning, researching, calculating techniques and strategies would be tried in future.
|The need for a reflective section is obvious but also further demonstrations of this will be seen in the practical work where the experimental work will be put into a practical context and the experimental procedures used will be criticised for accuracy and reliability.|
|D2 Take responsibility for managing and organising activities||This takes two forms, the first is the quality and organisation of the report especially providing clear headings for each section. The second area is to be able to keep to deadlines.||One of the most important indicators of employability is keeping to deadlines and to provide clear presentations|
|This goes beyond the immediate knowledge and understanding stage into the wider application of knowledge to the real world.|
THIS IS WHAT IS MOST WANTED IN FURTHER DEGREE
AND PROFESSIONAL STUDIES
Real evidence of showing how this can be applied in new areas for example looking at applications to reducing environmental impact or making operations more efficient etc.
Guidelines for assignment submission
• The assignment has 4 Tasks. Please read ALL TASKS carefully.
• The Interim Presentation will be for TASKS 1 AND 2 and will cover LO1 and LO2 of the module.
• The Final submission will cover ALL TASKS and Learning outcomes of the assignment.
• The Merit and Distinction criteria will also apply to the Interim Submission.
• The Interim grade will contribute to the overall grade.
• The attendance percentage and participation in class tutorials will contribute towards the achievement of Distinction grade.
• Both the interim and final assignments must be submitted on time to be considered for a Distinction grade.
• PLAGIARISM is considered a serious offence and will automatically lead to a FAIL grade. In the event of similar/identical submissions, please note that both students will automatically fail the module
• When IPADS/TABLETS/MACS are used please make sure documents are saved as .doc. Otherwise submission will not be valid and considered as a non-submission.
|Purpose of the assignment|
|Assignment Title||Engineering Gelology and Soil Mechanics|
|LO1: Be able to solve engineering hydrostatic problems|
LO1.1Pressure measuring devices: manometers; other instruments (used to measure fluid pressure and pressure differentials)
i) A manometer using mercury shows a difference between the level of 0.11m when attached to the top of a tank containing liquid under pressure. Some liquid is added to the open end of the manometer to a depth of 1m and the difference between the levels of the mercury is now 0.01m. What is the density of the liquid added to the manometer?
ii) An unvented water system is being retro fitted into a building and some concern is expressed that not all the taps and joins in the plumbing system are capable of withstanding3 bar pressure. It was felt that all these taps and joints could withstand a pressure of 1 bar. What kind of measuring equipment would be used to check the mains pressure and in what area of the building would the pressure be taken?
|1.2 Hydrostatic forces: magnitude and location of hydrostatic forces acting on submerged bodies|
(plane and curved surfaces, vertical and inclined surfaces)
A dam of 85 m in length holding water to a depth of 45m in a reservoir. Calculate (i) the position of the centre of pressure Assume density of water is 1000 KGm-3 and acceleration due to gravity is 9.81m3s-1
(ii) the total force acting on the dam.
(iii) If the wall of the dam is 60m above the base and the maximum force that is considered safe for the dam to withstand is 30MN, at what height must the spillway that sets the maximum depth be situated?
|LO2: Be able to solve engineering flow problems|
2.1 Engineering flow problems: flow classification; analytical principles; closed conduit flow; uniform open channel flow; flow measurement in open channels
i) If a channel is 5m wide with a slope of 0.001 and the Manning number is 0.03 and the channel depth is 0.8m. What is the total flow in m3s-1?
ii) A 15mm diameter pipe of length 10m is delivering water to a tap. When the tap is fully open
the delivery is 0.01m3s-1 assuming that the kinematic viscosity of water is 1.02 x 10-3 Nsm-2 at 200C calculate the Reynolds number and state whether the flow is laminar or turbulent.
iii) Analyse the relative advantages of a sharp crested weir and a broad crested weir for measuring flow in a water course. Visit Now : HND Hospitality Management Assignment
iv) Explain with the aid of diagrams how a broad crested weir can be used as a critical depth meter and what minimum flow conditions need to be maintained
v) .A broad crested weir is inserted in a channel to measure the flow rate and warn of potential flooding downstream. Calculate the height of water above the weir when the flow rate is 10m3s-1. The width of the weir is 2m Assume no energy loss through the weir.
vi ) Prepare a graph showing how the height yc would vary between flows of 10 and 20m3s-1 vii) What are the Froude Numbers for the flow at 5 , 10 and 15m3s-1 ?
|2.2 Flow classification: laminar and turbulent flow; uniform and non-uniform flow; steady and unsteady flow|
i) When water completely fills a pipe state at what point the flow changes from laminar to turbulent and state what factors affect the change over point
ii) When water flows in an open channel at what point does the flow change from quite to “turbulent”.
iii) Compare the transition from laminar to turbulent flow in a full pipe with placid changing to turbulent in an open channel flow situation.
iv) Calculate the critical depth in a channel of width 0.5m with a flow of 1m3s-1 vi) Define uniform flow and non – uniform flow vii) Define steady and unsteady flow.
|2.3 Analytical principles: continuity; conservation of energy (Bernoulli’s equation); forces due to rate of change of momentum|
i) State the Bernoulli equation and thus how pressure measurements may be used to estimate the flow rate in a pipe.
ii) State the continuity principle for open conduit flow and show how we can use this to estimate
|2.6 Flow measurement in open channels: velocity area methods; gauging structures e.g. broad crested weir, venturi flume|
Draw up a summary table comparing advantages of measuring flow in open channels :
a) using a gauging structure such as a sharp crested weir and
b) a method which combines a measurement of the average flow velocity and the area of cross section of the flow channel
LO3: Be able to match pumps to the demands of a specific system
3.1 Pump matching: energy and hydraulic gradients in pump-pipeline systems; pump performance and characteristic curves; pump selection to operate in a given system; pumps in series and parallel
i) The table given below gives the characteristics of a centrifugal pump running at a steady speed:
Fresh water is pumped to a service reservoir through a 350mm diameter pipe 10km long. The static head is 20m. Determine the discharge in the through the pipe and the power requirement of the pump. (This will need you to plot the pump – characteristic, system characteristic and efficiency curves against flow rate (Q). You must also find the operating point> Assume the friction factor f = 0.0045 and take minor losses at ten times the velocity head.
ii) In the above problem, if the static head were 40m not 20m, and you had a second identical pump available, explain how would you have arranged these pumps to overcome this much greater head?
|3.2 Specific systems: hydrodynamic machines; classification of pumps and turbines (radial, axial, reaction)|
i) Outline the essential differences between a pump and a turbine especially in how efficiency is expressed.
ii) Outline the application of the three main types of turbine (radial, axial and reaction)
|LO4: Be able to undertake hydraulic experimental procedures|
Experimental procedures: determination and investigation of hydrostatic forces; pressure measurement; velocity and flow measurement (pipes and open channels); energy losses (pipe systems); hydraulic jumps; pump characteristics
|This will be assessed by a separate practical work book.|
|Evidence checklist||Summary of evidence required by student||Evidence presented|
|Task 1||Demonstrate familiarity with pressure in fluids measurement and the forces developed|
|Task 2||An understanding of the different types flow in pipes and open channels and the conditions of flow as illustrated by Reynolds Number and the Froude Number. Measurement of flow in both systems and comparison of different measuring systems.|
|Task 3||A basic understanding of pump personal performance curves and their use in calculating optimum conditions and secondly a basic understanding of hydrodynamic machines|
|Task 4||Practical lab report book|
|Sources of information|
• Your evidence for assessment must be handed in with a signed learner declaration.
• You must hand in group work for assessment for all tasks.
• Throughout the assignment you should underpin your responses with appropriate theories.
• Ensure that all required Learning Outcomes and Assessment Criteria are covered in
|•||Ensure to provide citations, referencing and bibliography under Harvard|
Referencing System for your submission and it must fully acknowledge sources such as books and journals, websites etc.
|•||Including quotations, but exclusive of the reference list, bibliography and appendices, the assignment might be written in 2000 – 3000 words in length.|
|•||Submit a word-processed report and use Times New Roman/Arial font and font size 12. Use 1.5 or 2.0 line spacing.|
All assignments will be subject to Plagiarism checks. Ensure your assignment does not contain the Collusion and Plagiarism of any type, which is illegal and attract disciplinary action against the learner.
|•||Ensure to follow the Standard Report Format for report preparation:|
(This an indicative structure)
• Contents page (with a detailed numbering system)
• Tasks (use headings, sub-headings)
• Conclusion/Summary (summarizing the whole scenario justifying methods used)
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