Plumbing sizing
OFFICER&NCO BUILDING
ANA KANDAK, AFGHANISTAN
OBJECTIVE: The objective of this report is to calculate water, sewer pipes and electric water heater sizing of OFFICER&NCO building in Kandak Afghanistan.
BUILDING COMPONENTS: The building is a one floor barracks building
6 water closets. 6 ablutions in two lavatories 6 showers 1 janitor sink
Water pipe Sizing:
The size of the water pipes is calculated according to IPC 2006, each section is labeled as shown below and calculated using the below tables 604.3, E103.3(2), E103.3(3), E103.3(4), E103.3(5), E103.3(6), figure 103.3(6).
•
All fixtures are considered as public use
•
WC: Water closet
•
LAV: Lavatory
•
SH: Shower
•
JS: Janitor sink
Hot-Water Demand per Fixture (ASHRAE Handbook-HVAC Applications) XX (User entered data) EWH-0x (Based On the Table Titled, "Hot W ater Demand per Fixture for Various Types of Buildings" for "Office Building," Final Temperature: 140 F) Water heater entering water temperature =
50.0 F 10.0 C
Water heater leaving water temperature =
140.0 F 60.0 C
DEMAND FACTOR =
0.30
STORAGE CAPACITY FACTOR =
2.00
Qty.
Fixture
Total
(gph)
(gph)
Basin, public lavatory
0
0.00
0
Kitchen Sinks
0
0.00
0
Showers
6
30.00
180
Washers
0
0.00
0
Laundry Sinks
0
0.00
0
Janitor Sink
1
20.00
20
Ablutions
6
6.00
36
Service Sinks
0
0.00
0
Maximum possible demand =
236 gph
Probable maximum demand =
70.8 gph
BASIC WATER
Heater element capacity =
71 gph
HEATER SIZE
Sum of element capacities =
15.6 kW
Storage tank capacity =
142 gal
FROM ASHRAE CALCULATIONS
536 l Tank usable water before dilution = Storage tank usable capacity =
80 % 113 gal 536 l
Total usable water per hour =
184 gal
ADJUSTED
Sum of element capacities (kW) =
15.0 kW
WATER HEATER
Heater or coil capacity =
68.2 gph
Storage tank capacity =
145 gal
SIZE FROM EQUIPMENT SCHEDULE. NOTE: DECREASING
548 l
HEATER ELEMENT CAPACITY WILL
Tank usable water before dilution =
80 %
INCREASE TANK SIZE
Total usable water per hour =
184 gal
The results are shown in the following table which is done according to E103.3 (1)
1 n o i t p i r c s e d
e n i l
C D E F G H I
J
I S P
Minimum pressure available at main Highest pressure required at fixture (Table604.3) Meter loss 2.00 meter . . .
A B
2
g n i p i p n o i t u b i r t s i d r e t a w d l o c d n a e c i v r e s
″
Tap in main loss 2.0’’ tap (Table E103A) Static head loss 1.5 X 0.43 Special fixture loss backflow preventer Special fixture loss—Filter Special fixture loss—Other Total overall losses and requirements (Sum of Lines B through H) Pressure available to overcome pipe friction (Line A minus Lines B to H)
n o m i t o r u f ( b i r n t o i s i t c D e r s t e g n e a i p p i w i P d l p n o o C i t a ) n m g a i s r e g a D i d
3
4
5
M P G
) t f ( h t g n e l
) ' ' ( e z i s e p i P
6
7
8
9
s ) e t f t l v ( n a s e v g l a f i n v o t i t i u h f q t e g d n n e a l
t d n n ) e a t l f a 4 0 . 0 v l i u o 1 ( q c 6 e h l . l t a g o t c o n e t l
r e p e p s i d e s p t o f c l o e l n t e o f 0 i t 0 s c i 1 r f
n X i t ) s n 8 . I s e l S l o o l a c P ( v 7 n i h . t o u l i t q g o c n c e i e r l f
10 r s e e v s s o s ) s e l o I e r S c u n P x s o ( i e s t e c r i r p f
36.75 15 0 0.18 0.65 0 0 0 15.83
20.92 FU
AB
78
40.56
2.56
2.00
6.00
0.09
1.57
0.13
BC
78
40.56
10.17
2.00
0.50
0.11
1.57
0.17
CD
42
29.32
1.09
1.50
0.50
0.02
1.04
0.02
DE
12
15.65
18.14
1.50
6.50
0.25
1.09
0.27
EF
10
14.34
1.57
1.50
0.50
0.02
0.85
0.02
FG
8
12.92
1.57
1.00
0.00
0.02
4.11
0.06
GH
6
11.32
2.76
1.00
0.00
0.03
4.11
0.11
4 2
9.47 7.13
1.61 1.41
1.00 0.75
0.00 2.00
0.02 0.03
2.93 10.60
0.05 0.36 1.19
K
HI IJ Total pipe friction losses (cold)
L
Difference ( Line J minus Line K)
Required pressure at water supply: 2.5 Bar
19.73
FOR THE REST WATER LINES: By using (PLUMPING CODE)" "Equivalent Fixture Units" to compute the hot and cold water demands for fixtures:
For sh ower (106):
FIXTURE
NO. OF FIXTURE
F.U
T.F.U
SH
6
4
24
SP
6
2
12
JS
1
2
2
TOTAL F.U
DIAMETER OF PIPE(mm)
38
37.5
For water closets:
FIXTURE
NO. OF FIXTURE
F.U
T.F.U
WC
6
5
30
TOTAL F.U
DIAMETER OF PIPE(mm)
30
WATER HAMMER ARRESTOR TYPE (WHA).
Cold water line T.F.U = 6WCX5F.U+6ABX1.5F.U = 39 F.U.
Use WHA type C.
Hot water line T.F.U = 6ABX1.5F.U = 9 F.U.
Use WHA type A.
37.5
Drainage pipe sizing:
The size of the drain pipes is calculated according to IPC 2006, using TABLE 709.2, TABLE 709.1, and TABLE 710.1(1)
Latrines
TOTAL
JS
SH
WC
Ablu tio n
FLOOR DRAIN
Total (FU)
Main pip e size
1
6
6
0
8
55
2 inches
For first floor:
FIXTURE
NO. OF FIXTURE
F.U
T.F.U
SHOWERS
6
2
12
FLOOR DRAINS
8
2
16
WATER CLOSET
6
4
24
JANITOR SINK
1
3
3
TOTAL
55
Vent Pipe Sizing:
The size of the Vent Pipe is calculated according to IPC 2006, using TABLE 916.1
FIXTURE
NO. of Fixture
F.U
T.F.U
LENGTH DIAMETER (ft) (mm)
3WC+2FD
3+2
4+2
16
11.5
50
2WC+2FD
2+2
4+2
12
27.2
50
1WC
1
4
4
11.5
50
1JS+2FD+3SH
1+2+ 3
2+2 +2
12
19
32
3SH+1FD
3+1
2+2
8
11.5
32
1FD
1
2
2
11.5
32
8FD+6WC+6SH +1JS
8+6+6+ 1
2+4 +2+ 3
55
1
50
Roof Drain Sizing:
FOR ZONE1 The size of semicircular roof gutters is calculated according to IPC 2006, using TABLE 1106.6
RAINFALL RATE (mm\h)
91
HORIZONTALLY PROJECTED ROOF AREA (square f eet)
480
SLOPE
1%
DIAMETER OF ROOF GUTTER (inches)
4
The size of vertical conductors and leaders is calculated according to IPC 2006, using TABLE 1106.2
RAINFALL RATE (mm\h)
91
HORIZONTALLY PROJECTED ROOF AREA (square f eet)
480
SLOPE
1%
DIAMETER OF LEADER (inches)
3
FOR ZONE2 The size of semicircular roof gutters is calculated according to IPC 2006, using TABLE 1106.6
RAINFALL RATE (mm\h)
91
HORIZONTALLY PROJECTED ROOF AREA (square f eet)
505
SLOPE
1%
DIAMETER OF ROOF GUTTER (inches)
4
The size of vertical conductors and leaders is calculated according to IPC 2006, using TABLE 1106.2
RAINFALL RATE (mm\h)
91
HORIZONTALLY PROJECTED ROOF AREA (square f eet)
505
SLOPE
1%
DIAMETER OF LEADER (inches)
3
FOR ZONE3 The size of semicircular roof gutters is calculated according to IPC 2006, using TABLE 1106.6
RAINFALL RATE (mm\h)
91
HORIZONTALLY PROJECTED ROOF AREA (square f eet)
530
SLOPE
2%
DIAMETER OF ROOF GUTTER (inches)
4
The size of vertical conductors and leaders is calculated according to IPC 2006, using TABLE 1106.2
RAINFALL RATE (mm\h)
91
HORIZONTALLY PROJECTED ROOF AREA (square f eet)
530
SLOPE
2%
DIAMETER OF LEADER (inches)
3
FOR ZONE4 The size of semicircular roof gutters is calculated according to IPC 2006, using TABLE 1106.6
RAINFALL RATE (mm\h)
91
HORIZONTALLY PROJECTED ROOF AREA (square f eet)
423
SLOPE
1%
DIAMETER OF ROOF GUTTER (inches)
4
The size of vertical conductors and leaders is calculated according to IPC 2006, using TABLE 1106.2
RAINFALL RATE (mm\h)
91
HORIZONTALLY PROJECTED ROOF AREA (square f eet)
423
SLOPE
1%
DIAMETER OF LEADER (inches)
3
FOR ZONE5 The size of semicircular roof gutters is calculated according to IPC 2006, using TABLE 1106.6
RAINFALL RATE (mm\h)
91
HORIZONTALLY PROJECTED ROOF AREA (square f eet)
390
SLOPE
1%
DIAMETER OF ROOF GUTTER (inches)
4
The size of vertical conductors and leaders is calculated according to IPC 2006, using TABLE 1106.2
RAINFALL RATE (mm\h)
91
HORIZONTALLY PROJECTED ROOF AREA (square f eet)
390
SLOPE
1%
DIAMETER OF LEADER (inches)
3
