The document discusses the design of water distribution systems. It states that the design must satisfy water needs and maintain minimum residual pressures. It discusses pressure variations and velocity limits in distribution systems. It introduces the Hazen-Williams equation for calculating head loss in pipes based on flow rate, length, diameter and roughness coefficient. The document outlines Hardy's Cross Method for balancing flows in distribution networks using loop equations. It provides an example of applying the method to calculate pipe diameters and flows in a sample network.
Here you will get all information about sewer design, its type & various tests carried out on it for any leakage or any obstruction present and of improper joints.
Hydraulic Design of Sewer:
Hydraulic formulae, maximum and minimum velocities in sewer, hydraulic
characteristics of circular sewer in running full and partial full conditions,
laying and testing of sewer, sewer appurtenances and network.
Here you will get all information about sewer design, its type & various tests carried out on it for any leakage or any obstruction present and of improper joints.
Hydraulic Design of Sewer:
Hydraulic formulae, maximum and minimum velocities in sewer, hydraulic
characteristics of circular sewer in running full and partial full conditions,
laying and testing of sewer, sewer appurtenances and network.
Canal fall- necessity and location- types of falls- Cross regulator and
distributory head regulator- their functions, Silt control devices, Canal
escapes- types of escapes.
Reservoir Planning: Introduction; Investigations for reservoir planning; Selection of site for a reservoir; Zones of storage in a reservoir; Storage capacity and yield; Mass inflow curve and demand curve; Calculation of reservoir capacity for a specified yield from the mass inflow curve; Determination of safe yield from a reservoir of a given capacity; Sediment flow in streams; Life of reservoir; Reservoir sediment control; flood routing. Various types of Spillways and design.
Stream Gauging: Necessity; Selection of gauging sites; Methods of discharge measurement; Area-Velocity method; Venturi flume; Chemical method; weir method; Measurement of velocity; Floats Surface float, Sub–surface float or Double float, Twin float, Velocity rod or Rod float; Pitot tube; Current meter; Working of current meter; rating of current meter; Measurement of area of flow; Measurement of width - Pivot point method; Measurement of depth Sounding rod, Echo- sounder.
Topics:
1. Causes of Failures of Weirs on Permeable Foundations
2. Bligh’s Creep Theory
3. Lane’s Weighted Creep Theory
4. Khosla’s Theory
5. Application of Correction Factors
6. Launching Apron
Canal fall- necessity and location- types of falls- Cross regulator and
distributory head regulator- their functions, Silt control devices, Canal
escapes- types of escapes.
Reservoir Planning: Introduction; Investigations for reservoir planning; Selection of site for a reservoir; Zones of storage in a reservoir; Storage capacity and yield; Mass inflow curve and demand curve; Calculation of reservoir capacity for a specified yield from the mass inflow curve; Determination of safe yield from a reservoir of a given capacity; Sediment flow in streams; Life of reservoir; Reservoir sediment control; flood routing. Various types of Spillways and design.
Stream Gauging: Necessity; Selection of gauging sites; Methods of discharge measurement; Area-Velocity method; Venturi flume; Chemical method; weir method; Measurement of velocity; Floats Surface float, Sub–surface float or Double float, Twin float, Velocity rod or Rod float; Pitot tube; Current meter; Working of current meter; rating of current meter; Measurement of area of flow; Measurement of width - Pivot point method; Measurement of depth Sounding rod, Echo- sounder.
Topics:
1. Causes of Failures of Weirs on Permeable Foundations
2. Bligh’s Creep Theory
3. Lane’s Weighted Creep Theory
4. Khosla’s Theory
5. Application of Correction Factors
6. Launching Apron
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International Journal of Engineering and Science Invention (IJESI)inventionjournals
International Journal of Engineering and Science Invention (IJESI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJESI publishes research articles and reviews within the whole field Engineering Science and Technology, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
Design and Construction of a Hydraulic Ram Pump ~ Federal University of Technology
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Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
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CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
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Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
2. Design of Water Distribution
System
The design requirements of water distribution system are
to satisfied:
The water need ,and
The minimum residual pressure at each point of the
water distribution system
3. Pressure in Water Distribution
System
Pressure in distribution system varies with consumption.
Min. Pressure at peak flow(not less than 150 kPa to avoid
infiltration, proper flow to other buildings)
Max. pressure during low flows
Residential areas (3 stories)-150-300kPa(15-30m)
Residential areas (firefighting )-400kPa(40m)
Commercial areas-500KPa(50m)
4. Velocities in Water Supply
System
Velocities in water supply system<1m/s
2m/s upper limit may be reached near fire flows
Min velocity-0.25m/s (WASA)
5. Hazen-Williams equation for
pipe flow
Headloss in pipes(water supply network)
Empirical
Named after Allen Hazen and Gardner Stewart Williams.
H= head loss(m)
Q= flow rate(m3/sec)
L= length of pipe(m)
d= diameter(m)
C= Hazen William’s coefficient
6. Hazen-Williams Equation for
Pipe Flow
Hazen William greatly depends upon Roughness of pipe.
Basic Hazen William Eq is
Where,
V= velocity ,m/s
C=Hazen William co-efficient
R=Hydraulic radius or hydraulic mean depth
R=A/P(A=Area, P= Wetted Perimeter)
S= Hydraulic gradient=HL / L
7. H-head loss in meters
Q=flow in cu meter per sec
D= diameter in mm
L= length of pipe in meters
For safety factor C=100
8.
9. Hazen-Williams equation for
pipe flow
Advantages
Coefficient C is rough measure of relative roughness
Effect of Reynolds number is included in formula
Effect of roughness on velocity are given directly
Disadvantages
Empirical
Does not differentiate completely between laminar and
turbulent flow
Extremely high and low temp. 20% error in water pipes can
not be applied to all fluids in all conditions
10.
11. Hazen William
Problem 1: Calculate the diameter of pipe 1Km laid to
discharge a flow of 1000m3/day under a head loss of
10m(C=100)
Problem 2: A 6-km-long, new cast-iron pipeline carries
320 l /s of water .The pipe diameter is 30 cm. Find the
head loss .
12. Design of Water Distribution
System
Design Criteria for Distribution System
Design Parameter Value
Design flow Peak flow/Max.daily
demand
Population Population per plot
Peaking Factor 2.25/1.5
Minimum Size 75mm
Minimum Residual Head 14m
Input head 20m
Pipe Material AC or PVC, GI, steel pipe
C 100 or 110
13. Hardy’s Cross Method
Basic Principle
1. Sum of inflows is equal to the sum of outflows at any
junction or any node.
∑inflows=∑outflows
2. Sum of head losses around an elementary loop must be
zero.
∑HL = 0
14. Hardy’s Cross Method
Procedure
1. Draw the layout of the system.
2. Assign area to each node.
3. Calculate the population for
each node
4. Calculate the average
consumption at each node.
5. Calculate design flow for each
node which should be equal to
peak hourly demand.
6. Measure the length of each pipe.
15. Hardy’s Cross Method
Procedure
7. Assume flow in each pipe.
8. Assume the diameter of each pipe.
9. Assume any internally consistant
distribution of flow. The sum of flows
entering any junction must equal to
sum of leaving flows
10. Compute the head loss in each pipe by
means of equation(Hazen William) or
diagram. Conventionally clockwise flows
are positive and produce positive head
loss. Anticlockwise flows are negative
and produce negative head loss
16. Hardy’s Cross Method
Procedure
11. With due attention to the sign ,compute the total head loss
around each loop.
12. Compute without the regard to sign for the same loop for
sum of H/Q
13. Apply the correction to the flow in each line
16. Pipe line common to two loops receive both correction with
due attention to sign.
7. Balance the flow by Hardy cross method.
8. Calculate the residual pressure at all points of the system
and check its adequency.