kong kok weng

1.0 - INTRODUCTION

1.1 - Project Brief

Mr. Kong Kok Weng is desirous of developing on lot 7425, Jalan Ciku, Mukim Bukit Raja, Bukit Cherakah, Daerah Petaling Selangor Darul Ehsan under Program Pemutihan Kilang Tanpa Kebenaran.

1.2 - Objective

This report presents the detailed network analysis for the water supply pipeline serving the factory includes the following:-

a. Total daily water demand.b. Network flow analysis for peak flow demand (2.5 x Average flow)c. Network flow analysis for fire flow demand d. Computation of flow, hydraulic grade line, residual pressure, discharge

and headloss.

The pressure head for the proposed development is 54.0m ODL, given by SYABAS (ref no: SYA/PTG/DPD/DEVS/DEVU/PJT3/15006/14(3)

2.0 - DESIGN OF WATER RETICULATION

2.1 - Reference

Reference is made to the MWA design guideline.

2.2 - Design Criteria

The water reticulation system consists of pipelines network designed to meet 2 criteria.

The 2 criteria are :

Case 1 : Peak Domestic Demand Condition ( 2.5 x Average Flow )

Case 2 : Average Domestic Demand and 1 Fire Flows( Fire flow at 300 gpm at each stream )

All piping materials, valves, hydrants, and specials shall be in accordance with British Standards and SYABASs requirement.

2.3 Analysis of Flow Network

The proposed water supply system is carried out in PipeNet program. Major friction losses are computed based on Hazen William formula.

Value of Hazen-William coefficient ( C ) of 100 is used for D.I pipe. The peakfactor for peak flow is taken as 2.5 and 1.0 for fire flow. Headloss in pipelines should not exceed 2 meter head per 1000 meter of pipe length.

Minimal residual pressure for each node during domestic draw-off should not less than 7.5 metres from the highest supply level for peak flow case if the source of water is supply from SYABASmain pipe.

Breakdown of water demand is tabulated in Table 1.

Item Description Quantity Water demand Total Daily Demand

Per Day / Unit (gallon per day)

1 Factory 1 600 600

TOTAL 600

Table 1

2.4 - Result of Flow Analysis

The results of the flow analysis consist of two conditions which are peak flow analysis and fire flow analysis. The network analysis layout and the results of analysis are attached in Appendix 1 and Appendix 2 respectively. The water supply layout plan is shown in Figure 1.

TABLE 2 & 3SUMMARY OF FLOW NETWORK ANALYSIS RESULT

Table 2 : Summary of Peak Flow Network Analysis Results

Node No.

Ground level

Building Height

Case 1 = Peak Flow

Demand

Peak Flow =2.5 x Average flow

Pressure at node

Residual Pressure

(m) (m) (l/s) (l/s) (m) (m)

1 27.7 0 0 0 54.00 26.30

2 28.3 - - - 53.946 25.646

3 28.3 - - - 53.944 25.644

4 28.3 4.5 0.0052 0.013 53.944 21.094

5 28.3 4.5 0.0264 0.066 53.942 21.092

Table 3 : Summary of Fire Flow Network Analysis Results

Node No.

Ground level

Building Height

Case 2 = Fire Flow

Demand Hydrant Pressure at nodeResidual Pressure

(m) (m) (l/s) (l/s) (m) (m)

1 28.3 4.5 0.032 0 53.95 21.15

2 28.3 - 0 22.7 52.77 24.47

3 28.3 - 0 0 54.00 25.70

APPENDIX 1RESULTS OF ANALYSIS OF PEAK FLOW

OUT

--------------------------------------------------------------------------------PIPE NETWORK ANALYSIS--------------------------------------------------------------------------------!@

Job title : 1205

--------------------------------------------------------------------------------Number of nodes ........ 5 Number of pipes ........ 4 Minimum flow correction ...... .001 litres/sec--------------------------------------------------------------------------------E

--------------------------------------------------------------------------------

NUMBER OF REITERATIONS = 50

E--------------------------------------------------

--------------------------------------------------FNODE NO. DRAW OFF HYDRAULIC HEAD REDUCED LEVEL RESIDUAL HEAD

litres/sec m m m--------------------------------------------------------------------------------

1 0.0 54.000 C 27.7 26.3002 0.0 53.946 28.3 25.6463 0.0 53.944 28.3 25.6444 0.0 53.944 32.8 21.0945 0.1 53.942 32.8 21.092

--------------------------------------------------------------------------------E--------------------------------------------------

--------------------------------------------------FNA NB DIA LGTH C R FLOW VELOCITY HD.LOSS HY.GRAD.

mm m litres/sec m/sec m m/1000m--------------------------------------------------------------------------------

1 2 25. 17. 100. 6.314 0. 0.16 0.054 3.2432 3 50. 22. 100. 0.287 0. 0.04 0.003 0.1133 4 50. 6. 100. 0.081 0. 0.01 0.000 0.0043 5 50. 17. 100. 0.226 0. 0.03 0.001 0.083

--------------------------------------------------------------------------------


**End of program execution**--------------------------------------------------------- NUMBER

Page 1

Analysis of Results for Peak Flow

Pipe Network Note:

Denotes Node Number Denotes Pipe Number

50 mm dia Proposed SS Pipe 25 mm dia Proposed SS Pipe

1

3

0.013 l/s

2

54

6.2 mm 17.4 m

22.1 m

4

2

1

16.6 m

0.066 l/s

3

1 1

APPENDIX 2RESULTS OF ANALYSIS OF FIRE FLOW

OUT

--------------------------------------------------------------------------------PIPE NETWORK ANALYSIS--------------------------------------------------------------------------------!@

Job title : 1205

--------------------------------------------------------------------------------Number of nodes ........ 3 Number of pipes ........ 2 Minimum flow correction ...... .001 litres/sec--------------------------------------------------------------------------------E--------------------------------------------------NE--------------------------------------------------Node data --------------------------------------------------FNODE NO. DRAW OFF HYDRAULIC HEAD REDUCED LEVEL RESIDUAL HEAD

litres/sec m m m--------------------------------------------------------------------------------

1 0.0 54.000 C 32.8 21.1502 22.7 52.769 28.3 24.4693 0.0 54.000 28.3 25.700

--------------------------------------------------------------------------------E--------------------------------------------------Pipe data --------------------------------------------------FNA NB DIA LGTH C R FLOW VELOCITY HD.LOSS HY.GRAD.

mm m litres/sec m/sec m m/1000m--------------------------------------------------------------------------------

1 2 150. 62. 100. 0.004 23. 1.28 1.231 19.9171 3 150. 21. 100. 0.001 -0. -0.00 -0.000 -0.000

--------------------------------------------------------------------------------


**End of program execution**--------------------------------------

Page 1

Analysis of Results for Fire Flow

Pipe Network Note:

Denotes Node Number Denotes Pipe Number

150 mm dia Proposed DI Pipe

1

1

22.7 l/s

232

61.8 mm 20.5 m

0 l/s0.031 l/s

1 1

FIGURE 1WATER RETICULATION LAYOUT PLAN

kong kok weng

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