1. Potable Water For Villa Complex
Term Project # 10
Potable Water For Villa Complex By
Fawaz Al-Ghamdi
August 9, 2005
Assalam Alekom
My name is Fawaz Al-Ghamdi
I am glad to present to you today my term paper project “Potable water for Villa Complex”

2. OUTLINE Introduction Objective VE Job Plan Q&A Information Phase
Creative Phase
Judicial Phase
Development Phase
Implementation Phase
Q&A
The Outline for this presentation is as follows:
I will start with Introduction followed by
Objectives then
I’ll go over the VE Job Plan including
Information Phase
Creative Phase
Judicial Phase
Development Phase
Implementation Phase
And finaly Q&A

3. INTORDUCTION Project Description
6 new Villas are under construction; the owner would like to find the suitable way for getting the potable water
The designer original proposal is to install new RO system that desalinate the raw water from water well
Introduction
Project Description:
We have 6 new Villas are under construction; the owner would like to find the suitable way for getting the potable water. The designer has selected to install new RO system that desalinate the raw water from water well

4. As you can see in the picture, The new RO shall be located beside the storage tank to provide the tank with potable water. And the potable water lines are connected to the 6 villas from the (18,000 gal) Storage tank.

5. OBJECTIVE
To examine the original proposal with other possible ways and recommend the most suitable system using V. E. techniques.
Objective:
The objective is basically to ……………………..

6. INFORMATION PHASE Consultation Records Contact Tel. No. Major Points
SAMMNAN Co.
RO unit dealer
ZAID ALHUSSAN
Potable water provider
Now VE study started with the Information phase
For gathering data We have basically two main contacts
First is SAMMNAN Co who is specialized in selling RO unit
and the famous potable water provider ZAID ALHUSSAN
Also, I have my own personal experience since I worked as process engineer for RO unit

7. INFORMATION PHASE Main Required Criteria
Provide potable water flow of 9000 gpd.
Meet the minimum potable water specification per international standard (EPA).
TDS: below 500 ppm
pH:
Microorganism: zero
The performance critieria is to ……………………….
EPA: Environmental Protection Agency

8. INFORMATION PHASE Other Features The material to be in-kingdom
Vendor support shall be provided if needed
Spare parts to be available.
Size to be reasonable (area below 14 m sq)
Control system shall be easy.
Minimum use of hazardous chemicals
Other features are

9. INFORMATION PHASE Cost Data Idea Unit Price (SR/100 gal)
RO Unit (water well)
RO Unit (SWCC)
Local Provider
We obtained the cost data for the main alternatives
The unit price of using RO unit that takes its feed from water well which is the original proposal is 4.34 SR/100 gal
Whereas the one that takes its feed from SWCC (Saline Water Conversion Corporation) is 5.51and the local provider unit price is 1.82

10. FUNCTION PHASE Function Worksheet Why Function How
To get potable water that meet standard and flow requirement
Treat raw water
Install new RO skid
Now we move to the FUNCION PHASE
First we worked in the Function worksheet to determine (Why-Function-How)
Why: is to get……………
Funcition is to *…………….
And how is by ……………………..

11. FUNCTION PHASE Identify Present Function verb noun
What does it now do?
verb noun
Drain water
What must it do?
Treat raw water
Transfer water
Second we Identify Present Function
We asked
What does it now do? We answered in verb and noun.. (drain water)
And What must it do?
Treat raw water
Transfer water

12. CREATIVE PHASE Generate Ideas
Install new RO skid using the raw water from SWCC
Dig water well to search for sweet water.
Have annual contract with potable water provider.
Extend pipe from closest sweet water source.
Use raw water from the water well for the new RO unit.
Have individual RO skids for the 6 villas.
Use multistage vaporization process.
Wait for upgrading (SWCC)
Provide separate potable water piping network and raw water network.
Use solar cells to provide electricity to the new skid.
We come to the Creative phase
After brainstorming, we generated 10 ideas
Install new RO skid using the raw water from SWCC
Dig water well to search for sweet water.
Have annual contract with potable water provider.
Extend pipe from closest sweet water source.
Use raw water from the water well for the new RO unit.
Have individual RO skids for the 6 villas.
Use multistage vaporization process.
Wait for upgrading (SWCC)
Provide separate potable water piping network and raw water network.
Finally, Use solar cells to provide electricity to the new skid.

13. JUDICAL PHASE Feasibility Ranking Idea # Purity Probab. of implem.
Time to Implement
Cost to Develop
Experience
Total
Rank 1 10 8 7 6 9 40 2 18 3 43 4 16 5 38 24 14 13 23 15
In Judicial phase
We started with preliminarily evaluation by Feasibility ranking
We ranked the pervious ideas base on the certain criteria
Purity ,………… and experience
As you can see idea# 3 scored the best then idea# 1 and idea # 5.

14. Idea Comparison Idea Advantage Disadvantage Rank
Have annual contract with potable water provider.
Safe operation
Does not required electricity
Requires less manpower
No need to have draining facilities as there is no rejected water
No major Maint. or spare part required
-Require continuous follow up Service may discontinue anytime unless backup is provided
-Quality of water is not as high as RO unit production (usually higher TSS). 1
Install new RO skid using the raw water from SWCC
Very pure water
Service is continues
The recovery is only 80 %-· 
Initial Cost is high·   
Safety is lower than the others·  
High noise    
Need regular checking 2
Use raw water from the water well for the new RO unit
Safety is lower
The recovery is only %  
Both well and RO unit required regular checking. 3
We screened the unfeasible and impractical ideas then we move to the idea comparison in which we listed the advantages and disadvantege
For example for the idea of having annual contact with potable water provider, adavantges are ……….
And disadvantges are …………….
Simmilary for the other ideas

15. JUDICAL PHASE Determining Criteria Initial Cost 1-10 Low-High cost
Safety Low- Highly Safe
Magnitude of saving Small-Large saving
Continuation of service Low-High
Efforts to monitor/operate Low-High efforts
The team ranked the idea according to the following criteria

16. Weights For Evaluation
Initial Cost B
Safety C
Cleanliness D
Continuation of service E
Efforts to monitor/operate
Raw Score
Assigned Weight 3 6 5 10 4 8 2
How important B C D E 3
Major Preference A
A-B-1
A-C-1
D-2
A-E-1 2
Medium Preference 1
Minor Preference
B-2
B-D-1
B-1
C-2
E-2
D-E-1
Here we assigned Wight to each criteria
First we determine the importance of each criteria using comparison matrix then we got the total raw score
And we adjust them to the assigned weight
As you can see cleanliness has highest weight

17. Continuation of service Efforts to monitor/operate
Evaluation Matrix
CRITERIA
Initial Cost
Safety
Cleanliness
Continuation of service
Efforts to monitor/operate
TOTAL
IDEA
Wt. 6 10 8 4
RANK
Original method: Install new RO skid using the raw water from well 3 5 7 2
Sub Tot. 18 50 60 80 28
236
Have annual contract with potable water provider. 9 1 48 90 40 16
242
Use raw water from the water well for the SWCC 24 64
226
This is the final evaluation step
(evaluaiton matrix)
After ranking each idea with for each criteria we found that the second idea (Having ………….) n scored the best 242

18. DEVELOPMENT PHASE - Assume 10 years service life Savings
Item Total Cost (SR)
Original: New RO with water well , 700
Proposed: Annual Contract with P. W. P ,000
________
Total saving ,700
% Reduction %
Life Cycle Cost Results
In th development phase we prepared the total cost for original and proposed idea so and we found that we have 78% reduction in th total cost
Similarly we found 87 % reduction in LCC when using the proposed idea
Project
Annual Amount
Original
36,048
Proposed
4,814
TOTAL SAVING
31,234
REDUCTION %
87 %

19. VALUE STUDY SUMMARY
The original design can be very well accomplished without jeopardizing basic or secondary function by install new RO units using water from well.
The selected proposed method “Annual Contract with potable water provider” will:
Improve the safety
Eliminate or minimize the use of electricity and handling hazardous chemicals.
Reduces the manpower required
Eliminate installing draining facilities as there is no rejected water
Reduce the consumption of spare parts and less maintenance.
Save money (total cost and LCC)
The proposed idea will meet the basic requirement and will cost mush less. The changes needed to implement the new proposal is a very minor engineering work.
Read

20. IMPLEMENTATION PHASE How should it be implemented?
The proposed case will be negotiated with local potable water providers and then the best offer shall be selected. The local providers normally transport the sweet water by using big trucks in weekly basis.
What should be changed and in what sequence?
No major modification work is required. Just prepare the road to the storage tank
Who should do it?
The selected local potable water provider will take care.
How long should it take to start? Any deadline?
Negotiation and selection take 20 days.
Deadline: before the end of construction work of the Villas.
Implementation cost, internal hours?
15 man hours. Total cost SR 300.
FINALLAY

21. Thank you