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Copy of final year project ppt

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Nirav Bhavsar

on 5 April 2014

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Transcript of Copy of final year project ppt

DESIGN OF WATER SUPPLY distribution NETWORK FOR sector Xu II, GREATER NOIDA
Under the guidance of:
S. ANBU KUMAR
ASSISTANT PROFESSOR
SUBMITTED BY
CHHAVI SADAN 2K8/CE/413
HIMANSHU DAWAR 2K8/CE/423
NIKHIL JEPH 2K8/CE/439
PRABHAS BAJAJ 2K8/CE/445
SAPNA MEENA 2K8/CE/455

DEPARTMENT OF CIVIL ENGINEERING
DELHI TECHNOLOGICAL UNIVERSITY (FORMERLY DELHI COLLEGE OF ENGINEERING)
OBJECTIVES

Study of overall water supply situation of Greater Noida town (Number of Over Head tanks (OHTs), Under Ground Reservoirs (UGRs) and tube wells).
Manual Design of Water Supply(Pipeline) System for Sectors Xu-II and verification using Bentley’s WaterCAD Software.
Preparation of Bill of Quantity.
GLIMPSE OF THE
OVERALL AREA

Greater Noida has been divided into three parts on the basis of water supply development planning:-

Phase I & II (1991-92)
Phase III (2005)
Group of 16 Sectors (2009-10)
A group of 16 sectors has been selected.
The number and capacity of overhead tanks ,underground reservoirs required and the number of tube wells are calculated based upon population density .
The number of OHTs, UGRs and TWs to be constructed to meet the public demands
The excess demand of water to be fulfilled by the other sources (ganga canal water).
PART ONE OF THE PROJECT
WATER SUPPLY MASTER PLAN of 16 SECTORS

Master Plan of 16 sectors was prepared by UPJN in 2009-10 .
This group of 16 sectors is divided into 9 water supply zones.
Design Criteria:
Population Forecast:
Residential Area 500 Persons/Hectare
Industrial Area 250 Persons/Hectare
Institutional Area 110 Persons/Hectare

Rate of Water Supply:
Per capita rate of water supply 225 Lpcd

Water Supply Pattern:
a. Draw off pattern for continuous supply round the clock
b.Tube-wells Yield 2200 lpm with 16 hours pumping
c. The water from tube-wells is proposed to be pumped into UGR then UGR to OHT.
d. The number of tube wells is subject to a maximum value of 1 tube well/25 hectares
INPUT DATA





CALCULATION OF OHTs, UGRs AND TUBE WELLS
ANALYSIS OF WATER SUPPLY/DEMAND SITUATION OF GREATER NOIDA
Exclusive study of SECTOR XU-II and manual design of it’s water supply system and its subsequent verification using WaterCAD.

Preparation of Bill of Quantity (including cost of pipes, valves and specials and excavation work only)
PART TWO OF THE PROJECT
Design of the System
XU-II SECTOR

Sector XU-II is a residential sector.
It has 1390 plots.
Population = 17176
Area = 52.96 hectares.
Out of 17176 persons, 3276 persons are assumed to reside in the informal sector
The remaining 13900 reside in the plotted areas.
It has been divided into 4 zones, namely pockets A, B, C and D according to the layout of road network.
The distribution of population in individual pockets mentioned in the diagram above is as shown below :


Approximate criterion of selection of pipe diameter in the network (as consulted with the engineer) :
ASSUMPTIONS
Approximate criterion for selection of pipe material:
Peak Factor(as mentioned by CPHEEO):
For a Population less than 50,000 3.0
Population range 50,000 to 2,00,000 2.5
Population above 2,00,000 2.0
 
Although by the population criteria, peak factor of 3.0 should be used, but for the design of network, we have used a peak factor of 2.4, same as that used by the sponsors in the actual design.
 
Residual Pressure (As per CPHEEO) :
Minimum residual pressures at nodal points are:
Single Storey Building 7m
Two Storey Building 12m
Three Storey Building 17m
 
Since the sector predominantly contains two storey houses, the target residual pressure is assumed as 12m in the network design.

STEPS IN THE NETWORK DESIGN ANANALYSIS OF SECTOR XU-II
For a particular residential sector, we assumed the following data:
Population Density= 10 persons/plot
population is projected by 10% to care of uncertainties
Daily per capita demand= 230 lpcd
Initial pressure head for OHT=25 m
Requisite pressure head for a ground storey building=12 m

For convenience, the discharge values for the pipes in the following diagrams correspond to the population to be served by a particular pipe.

If the population to be served is p:
Then the corresponding discharge = px1.1x0.23x2.4 m3/d
Steps in Network Design-I
The trunk line is laid alongside the existing road network

The pipe distribution inside individual subsector is shown below:
Population
The pipe distribution inside individual subsectors are shown below:
Population
Subsector F
Subsector F
WaterCAD

Solution of pressurized pipe flow problems (i.e., the computation of the flow in each pipe)
Design pressurized piping systems.
Simple or compound system branching pipe systems and pipe networks.
Characteristics of any of the components (pipes, junctions, reservoirs, valves, etc.) in the design process.
Import and export of data in various formats, including AutoCAD and ARC Info.
INTRODUCTION
Drawing the schematic
Changing options
Identification of characteristics of each component
Simulate the system :WaterCAD can be used to determine the distribution of flow and pressure in the system either by clicking the GO button at the top of the screen or by clicking the right mouse button and selecting Compute.
Viewing results .
PROCEDURE OF SIMULATION
WaterCAD layout of XU-II

For each pipe, pipe length and diameter is entered through the Flex Tables as shown.
After this the demand calculated manually at each junction is entered through the junction table.
Overhead Tank is provided with a staging of 25m.
SCREENSHOTS
OF
WATERCAD
PIPE DATA
COLOR CODING PROPERTIES
AFTER VALIDATING THE SYSTEM
COMPUTED RESULTS
Analysis is carried out and it is checked that the residual pressures at various junctions are greater than 12m.

Excavation
To make space for the laying of the pipes underground.
The trench shall be so dug that the pipe may be laid to the required gradient and at the required depth.
As per the CPHEEO code, for pipelines under roadway there must be a minimum cover of 1m.
The width at the trench at bottom shall provide not less than 300mm clearance on both sides of the pipe.
TRENCH
CALCULATIONS
The rate of excavation/cum soil is Rs 42.50 [Specified by the GNIDA authorities]
Hence the amount for excavation work =Rs (42.50 x 17720) = Rs 7,53,100 .

The rate of backfilling/cum = Rs 20.50 [Specified by the GNIDA authorities]
Hence the amount for backfilling work = Rs (20.50 x 17720) = Rs 3,63,260
CONCLUSIONS
The number of OHTs, UGRs and Tube wells required for different sectors are calculated. Field data is collected on the number of such entities existing and recommendations are made as to the number of OHTs, UGRs and Tube wells to be constructed further as shown in the table in the next slide.
The water supply network of Sector XU-II has been developed and is checked for residual pressures at terminal points both manually and using WaterCAD simulation.
A Bill of Quantity for the project has been prepared and the total project cost (excluding OHT costs and house connections) has been computed.

REFERENCES


Modified Master Plan of Water Supply for Greater Noida

CPHEEO Manual 2002

Water Distribution System by Larry W. Mays

CPWD, Delhi Schedule of Rates 2007

Analysis and Control of Unsteady Flow in Pipelines by G.Z. Watters
FLEX TABLES
COST OF EXCAVATION
The rate of excavation/cum soil is Rs 42.50 [Specified by the GNIDA authorities]

Hence the amount for excavation work = Rs (42.50 x 17720)
= Rs 7,53,100

Earthwork in backfilling the trenches with selected earth and the earth taken from borrow pits shall be done in layers of 150 mm, consolidating each deposited layer by ramming and watering.

The rate of backfilling/cum = Rs 20.50 [Specified by the GNIDA authorities]

Hence the amount for backfilling work = Rs (20.50 x 17720)
= Rs 3,63,260
Bill of Quantity (BOQ) of the Pipe network
Cost of Valves and Specials (Bending etc)=10% of Pipe Cost=Rs. 1378425.30

So total cost of project related to purchase of pipes, valves and excavation work
= Rs ( 1.37,84,253 + 1378425.30 + 7,53,100 + 3,63,260 ) = Rs 1,62,79,038

Thank you

Bill of Quantity (BOQ) of the Pipe network
Cost of Valves and Specials (Bending etc)=10% of Pipe Cost=Rs. 1378425.30

So total cost of project related to purchase of pipes, valves and excavation work
= Rs ( 1.37,84,253 + 1378425.30 + 7,53,100 + 3,63,260 ) = Rs 1,62,79,038
Full transcript