PROJECT : Medical City ( Makkah )
Water demand calculation
NO OF STUDENT = 2000 STUDENT
NO OF HOSPITAL & CLINK BEDS = 450 BED ( 400 HOSPITAL
+50 CLINC)
THEATER = 1200 PERSON
RESIDENTIAL 220 *4 BED ROOM
Student water demand per day 45 litre /day/student(from ASPE
PAGE 160 CHAPTER 8 VOLUME 2)
= (2000x45 liter) = 90 cubic meter/day
HOSPITAL WATER DEMAND =450 LITER/BED/DAY 400 BED
CLINC BEDS = 450 LITER/BED/DAY 50 BED
THEATER VISITOR = 10 LITER/VISITOR 1200 VISITOR
(1200 x 10liter) = 12 cubic meter /day
RESIDENTIAL 220 *4 BED ROOM=880 person x 250 liter/person
= 220 cubic meter /day
FIRE DEAMAND
568 CUBIC METER ( 1250 GPM X 2 HOUR DURATION )
IRREGATION DEMAND
8000 M2 X 10 LITER/SQ METER = 80 CUBIC METER
TOTAL = 90 + 202 + 12 + 220 + 80 = 604 CUBIC METER /
DAY
PROJECT : Medical City ( Makkah )
Water demand per 7 day= 604 X7 = 4228m3 /day ( WITHOUT
FIRE DEMAND)
4228 + 568 = 4798 CUBIC METER ( WITH FIRE DEMAND )
Water demand per 7 day= 524 X7 = 3668m3 /day ( WITHOUT
FIRE& IRREGATION DEMAND)
HOLDING TANKS
Take 3 tanks capacity (as below)
1-HOSPITAL
400X450 = 180 X 0.8 = 144 CUBIC METER
144 X 7 DAYS = 1008 CUBIC METER
2- RESIDENTIAL AREA
880 person x 250 liter/person
= 220 cubic meter /day
220 X 0.8 = 176 CUBIC METER/DAY
176 X 7 DAYS = 1232 CUBIC METER
3- EDUCTIONAL AREA AND CLINK
Student water demand per day 45 litre /day/student(from ASPE
PAGE 160 CHAPTER 8 VOLUME 2)
= (2000x45 liter) = 90 cubic meter/day
THEATER VISITOR = 10 LITER/VISITOR 1200 VISITOR
(1200 x 10liter) = 12 cubic meter /day
PROJECT : Medical City ( Makkah )
CLINC BEDS = 450 LITER/BED/DAY 50 BED
450X50 = 22500 LITER = 22.5 CUBIC METER
90 + 22.5 + 12 = 124.5 CUBIC METER
124.5 X 7 DAYS = 871.5 CUBIC METER
GRAY WATER TANK (HOSPITAL)
1- Flush water demand for toilts
(from ASPE PAGE 28 CHAPTER 2 VOLUME 2)
ESTIMATED BASED ON 3 TOILET OR URINAL /DAY/PERSON
(ASPE TAKE IT 3 )
EACH (WATER CLOSETS) FLUSH TAKE ABOUT 6.5 lit/flush (19.5
lit/DAY/ PERSON) 25% USAGE
EACH (URINALS) FLUSH TAKE ABOUT 2 lit/flush
(6 lit/DAY/ PERSON) 75% USAGE (PROJECT HAVE NO
URINALS)
(WATER CLOSETS)
400 X 6.5 LITERS X 3 x 2 days = 15600 LITER =15.6 m3
2- IRREGATION DEMAND
30 CUBIC METER/DAY
GRAY WATER TANK = 16 + 60 (IRREGATION /2 DAYES )m3 = 76
m3
REACTION TANK
ASSUME REACTION TANK CAPACITY = 16 m3 (76/6)
We need to fill it 6 times per day
Water volume 96 m3
Filtration pump
Assume pump work 6 times/day each time to take 16 m3
Each time = 24/6 = 4 hours
We assume that pump work 30 min at each hours
PROJECT : Medical City ( Makkah )
Pump capacity 16/2(hour) = 8 m3/hour
Take pump 35 gpm = 2.2 l/sec
GRAY WATER TANK (RESIDENTIAL AREA)
1- Flush water demand for toilts
(WATER CLOSETS)
from ASPE PAGE 28 CHAPTER 2 VOLUME 2)
ESTIMATED BASED ON 3 TOILET OR URINAL /DAY/PERSON
(ASPE TAKE IT 3 )
EACH (WATER CLOSETS) FLUSH TAKE ABOUT 6.5 lit/flush (19.5
lit/DAY/ PERSON) 25% USAGE
EACH (URINALS) FLUSH TAKE ABOUT 2 lit/flush
(6 lit/DAY/ PERSON) 75% USAGE (PROJECT HAVE NO
URINALS)
(WATER CLOSETS)
880 X 6.5 LITERS X 3 x 2 days = 34320 LITER =34.3 m3
2- IRREGATION DEMAND
30 CUBIC METER/DAY
GRAY WATER TANK = 34.3 + 60 (IRREGATION /2 DAYES )m3 =
94.32 m3
REACTION TANK
16m3
filtration pump
Assume pump work 6 times /day each time to take 16m3
Each time = 24/6= 4hour
We assume that pump work 30 min at each hour
Pump capacity16/2= 8m3/hour
PROJECT : Medical City ( Makkah )
Take pump 35 gpm = 2.2 l/sec
GRAY WATER TANK (EDUCTIONAL ARAE AND CLINK)
1- Flush water demand for toilts
(WATER CLOSETS)
2050 X 6.5 LITERS X 3 x 2 days = 79950 LITER =80 m3
2- IRREGATION DEMAND
30 CUBIC METER/DAY
GRAY WATER TANK = 80 + 60 (IRREGATION /2 DAYES )m3 =
140 m3
REACTION TANK
25m3
filtration pump
Assume pump work 6 times /day each time to take 25m3
Each time = 24/6= 4hour
We assume that pump work 30 min at each hour
Pump capacity25/2= 12.5m3/hour
Take pump 55 gpm = 3.47 l/sec
