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close this bookResidential and Non-Residential - Drinking water installations and drainage requirements in Nepal (MTC - SKAT, 1988, 188 p.)
close this folderPART 1 - DRINKING WATER INSTALLATIONS
View the document1. OBJECTIVES
View the document2. FIELD OF APPLICATION
View the document3. TERMS AND DEFINITIONS
View the document4. PRINCIPLES OF INSTALLATIONS
View the document5. PARTS OF PIPELINES
View the document6. WATER METER
View the document7. STORAGE TANKS
View the document8. PROTECTION AGAINST CORROSION
View the document9. MATERIALS AND CONNECTIONS OF PIPELINES
View the document10. POSITIONING OF PIPELINES
View the document11. INSTALLATIONS IN BUILDINGS
View the document12. APPARATUS AND VALVES
View the document13. FIRE HYDRANT LINES
View the document14. FREEZING PROTECTION
View the document15. DIMENSIONING
View the document16. TESTING OF A NEW INSTALLATION

16. TESTING OF A NEW INSTALLATION

16.100

A TEST MUST BE CARRIED OUT ON ALL PIPELINES PRIOR TO THEIR BEING COVERED.




The procedure for the test should be as follows:





a) Pipelines should be closed off from all apparatus such as basins, water closets, hot water storage tanks, etc.



b) The system should be filled with water and be thoroughly ventilated to secure the release of all trapped air.



c) The system should be closed, and a pressure of 1 1/2 times the working pressure applied by means of a hand pump.



d) The system should remain under pressure for at least one hour. During this testing period the loss of pressure should not be more than 0.1 kg/cm2.

16.110

After the pressure test is completed satisfactorily all apparatus should be connected and the system refilled and checked for leaks.

16.120

Before handover the system should be filled and drained at least 2 times to ensure that it is properly cleansed of sand, cutting oil, or other material.

TABLE 1/1 - VALVES, PRINCIPLES

GATE VALVE (STOP VALVE)


Figure

The seat openings are usually of the same diameter as the inside of the pipes. They have very little loss of head, when the valve is completely opened.

Application: In main pipelines, before the taps. Where watertightness is not so important.

Don't use: As out-flush valve (too high speed in the pipeline, and not really watertight) instead, use a suitable tap.

GLOBE VALVE (STOP COCK)


Figure

This valve has to be installed with the water pressure under the valve seat.

A globe valve can be repaired and is watertight, however, it has a quite high loss of head.

Application: for smaller diameters.

Don't use: as outflush (drain valve at water reservoirs).

BIB COCK (TAP; FAUCET)


Figure

The bib cock closes against water pressure. When it is open, the passage is relatively free for the water. The spout may or may not be threaded (for hose connection).

TABLE 1/2 - C.P. VALVES, EXAMPLES

BIB COCK
(Tap. Faucet)

BIB COCK WITH HOSE CONNECTION

PILLAR COCK

PILLAR COCK SWIVEL

ANGLE STOP COCK

GLOBE VALVE
(Stop cock, female)

UP-VALVE (Under plaster)
(Concealed stop cock)

This is the only stop cock type which may be fixed for concealed pipes (under plaster)

C.P. = CHROME PLATED

TABLE 1/3 - C.P. VALVES, EXAMPLES

BASIN, ONE HOLE MIXER

BASIN, THREE HOLE MIXER

BASIN / SINK

WALL MIXER

BATH WALL MIXER

With eg. telephonic shower
(Waterhead min. 5m)


Figure

C.P. = CHROME PLATED

TABLE 1/4 - VALVES, EXAMPLES

VERTICAL BATH MIXER


Figure

In many situations this rather unusual mixer might be the adequate solution, eg. if bathtub or shower is in a niche or corner. In addition it can be the more economical installation. (Soma Plumbing Fixtures Ltd, India Similor, Switzerland).

SAFETY VALVE (PRESSURE RELEASE)


Figure

Application: Must be fitted in pressure systems with hot water tanks (low pressure vent pipe will also do).

Caution: Verify the flush direction of the water.

Danger: Never install any valve between the hot water tank and the non return or any other valve!

PRESSURE REDUCER VALVE


Figure

This valve is applied where a lower pressure is required.

Pipelines for domestic use should not be over a pressure of 4 kg/cm2 (= 40 m Head).

Note: Hot water tanks are normally built to resist a maximum head of 30 m. Where the water supply has more pressure a reducing device (pressure reducer valve, cistern) is required.

TABLE 1/5 - VALVES, EXAMPLES

FOOT VALVES

Application: On inlets of suctions pipes in pumped systems


Figure

Note: A swing check valve is most suitable since it offers easier flow

TAPERING PLUG (GAS COCK)


Figure

Applications: for gas installations and drain valves only.

Note: these valves are made for low pressure application only: since the water flow would be stopped to fast in pressure systems they would produce water hammers and damage the pipeline.

NON RETURN VALVES


Figure

Non return valves are fitted in pipe systems to secure the flow direction and to prevent any flow back.

For application in systems with hot water tanks, solar water heaters, pumps, pressure boosters, washing machines, etc.

Swing checks are recommended (flap type), since there is full passage and less friction loss.

Caution: Attention has to be given to the flow direction. Non return valves have to be fitted in that way that the water pressure (incoming) remains under the valve seat.

TABLE 1/6 - G.I. FITTINGS

EXAMPLE

BEND 90°
(made out of steel tubes)

BEND 45°
(made out of steel tubes)

ELBOW 90°
female equal + reducing

ELBOW 90°
male * female equal + reducing

6

8

90

92

TEE
female

CROSS
female

SIDE OUTLET ELBOW female

SIDE OUTLET TEE female

130

180

221

223

REDUCING SOCKET
female

REDUCING BUSH
female + male

RED. HEXAGON
male

RED. SOCKET
male + female

240

241

245

246

SOCKET

PLUG

BACKNUT

CAP

270

291

310

300

FLANGE

UNION
flat sheet female

NIPPLE

321

330

530


TABLE 1/7 - WATER SUPPLY TO BATHTUBS AND BASINS

PREVENTION OF BACK - SIPHONING

Safety valve

Bathtub, mixing - tap

means of safe drainage

Correct

Wrong

Keep telephonic showers out of bath tubs

It is dangerous to have telephonic showers in used water: with empty feed lines, the water can be sucked into the drinking water

DIRECT WATER SUPPLIES FOR BASINS


Basin/Inlet above water level


Inlet under water level


Wrong

TABLE 1/8 - PASSAGES OF PIPES

THROUGH WALLS AND CEILINGS


Galvanized pipe through the outside-wall


Cost iron pipe through the outside - wall


Galvanized pipe through 2 walls with expansion joint


Pipe passage through ceiling (for rooms with high moisture)

TABLE 1/9 - ROOF TANK PRINCIPLE REQUIREMENTS


Figure

1 Inlet, with one or more ball valves, or open inlet, when filled with pump or with electric automatic control system.

2 Outlet, min. 5/4” G.I. socket, and after fixing of main gate valve.

3 Overflow, min. 5/4” G.I. socket.

4 Drain, min. 2” G.I. socket with plug.

5 Interconnection, min. 5/4” G.I. socket for possible extensions.

Note:

A water level indicator is useful (clear plastic pipe) size of tank: Water consumption per one person approx. 165 I/day, suggested minimal size: 1000 liters.

TABLE 1/10 - PARTS OF WATER INSTALLATIONS

1

WATER MAIN

2

MAIN CONNECTION (FERRULE OR CONTROL VALVE)

3

COMMUNICATION PIPE

4

METER CONTROL VALVE

5

WATER METER

6

SERVICE PIPE

7

SUCTION PIPE WITH FOOT VALVE

8

PUMP

9

CHECK VALVE (NON RETURN)

10

DELIVERY PIPE (PUMP LINE; DISCHARGE)

11

OVERFLOW

12

DISTRIBUTION LINE

13

BRANCH LINE

14

APPARATUS CONNECTOR

15

TAP

16

WATER HEATER

17

HOT WATER SUPPLY LINE


Figure

TABLE 1/11 - ROOF TANK CONNECTION, EXAMPLE

1

MAIN VALVE

2

WATER METER

3

BALL VALVE

4

OVERFLOW

5

DRAIN-OUT

6

PUMP

7

NON-RETURN VALVE

8

ELECTRIC-PUMP SWITCH-OUT

9

WATER TO THE APPARATUS


Figure

TABLE 1/12 - ROOF TANK CONNECTION, EXAMPLE


Figure

1 BALL VALVE
2 DRAIN-VALVE
3 MAIN-VALVE

Note: Drinking water tanks should be above the ground

TABLE 1/13 - FIRE HYDRANT CONNECTIONS TO ROOF TANKS


Figure

Note: Regular replacement of water in pipes and roof tank is maintained by having a cistern connected, at furthest distance from tank, i.e. at lowest point.

TABLE 1/14 - PRESSURE INCREASE WITH BOOSTER


Figure

1

TOWN SUPPLY LINE

2

WATER SUPPLY LINE

3

DISTRIBUTION, LOWER FLOORS

4

DISTRIBUTION, UPPER FLOORS

5

PUMP FOR PRESSURE-INCREASE

6

NON RETURN VALVE

7

PRESSURE-BOOSTER

8

WATER LEVEL INDICATION

9

PRESSURE-RSEDUCER VALVE

10

SAFETY-VALVE

TABLE 1/15 - HOUSE INSTALLATION IN FREEZING CLIMATE


Figure

Notes: Pipes not to be fitted into outside walls pipes to fitted with slopes (no siphons!) to enable thorough drainage.

TABLE 1/16 - WATER HEATER CONNECTION

Note:

All installed water heaters must have a pressure-release possibility: by safety valve or by an air pipe.

Caution:

The maximum head for water heaters is given by the factory and is indicated on the water heaters. (Normally for max. 30 m head = 3 kg/cm2).

LOW - PRESSURE CONNECTION

PRESSURE CONNECTION
with pressure reducer valve

LOW - PRESSURE CONNECTION
with air - pipe

PRESSURE CONNECTION
with cistern for pressure reducing
(or via roof tank)
HIGHLY RECOMMENDED

1

FEED PIPE

2

MAIN VALVE

3

NON RETURN VALVE

4

SAFETY VALVE

5

DRAIN (PLUG OR VALVE)

6

HOT WATER TAP

7

PRESSURE REDUCER VALVE

TABLE 1/17 - HOT WATER SUPPLY SYSTEMS

Serie - connection

Parallel - connection

Single - supply

Group - supply (for nearby taps)


Single - tap system (effective and economical; fast hot water availability)


Distribution line with circulation

TABLE 1/18 - HOTWATER SUPPLY

EXAMPLE No 1:

ONE FAMILY HOUSE


SEPARATE FEED LINE TO HOT WATER TANK (=NO NON-RETURN VALVE)


HOT WATER TANK LOWER THAN TAPS


Figure

TABLE 1/19 - HOTWATER SUPPLY

EXAMPLE NO. 2:

LARGE ONE FAMILY HOUSE
SEPARATE FEED LINE TO HOT WATER TANK
(= NO NON-RETURN VALVE)
DIVIDED CONNECTIONS FROM HOTWATER TANK TO TAPS
FOR SPEEDY AND ECONOMICAL HOTWATER SUPPLY.


Figure

TABLE 1/20 - HOTWATER SUPPLY

EXAMPLE No 3:

TWO FLAT HOUSE, WITH SEPARATE HOTWATER TANK
WITH SEPARATE FEED LINES TO HOT TANK (= NO NON-RETURN VALVE)


Figure

TABLE 1/21 - HOTWATER SUPPLY

EXAMPLE No 4:

MULTISTORY BUILDING
WITH SEPARATE FEED LINES TO HOTWATER TANKS
EACH HOTWATER TANK HAVING 1 VALVE, 1 NON-RETURN VALVE
AND 1 SAFETY VALVE.


Figure

TABLE 1/22 - HOTWATER SUPPLY

EXAMPLE No 5:

REDUCTION OF HIGH PRESSURE SUPPLY BY MEANS OF A BALL-VALVE OPERATED CISTERN.

Note:

1) Hot water and cold water should have the same pressure, therefore cold water is also supplied from the cistern.


2) Due to low pressure the vent pipe fitted on top of hot water may be required to release eventual


3) Obviously the cistern has always to be the top-most placed item, in order to supply water to the hot water tank and to the taps.


Figure

TABLE 1/23 - SOLAR WATER HEATER INSTALLATION

INSTALLATION EXAMPLE No 1: ROOF TANK, WITH SEPARATE COLDWATER PIPELINE TO THE SWH-SYSTEM, WITHOUT REQUIREMENT OF SPECIAL VALVES

CIRCULATION SYSTEM
(WITH HEAT STORAGE)


Figure

1

COLDWATER STORAGE TANK

2

HOTWATER STORAGE TANK

3

COLLECTOR

4

COLDWATER PIPELINE

5

COLDWATER TO HOT TANK

6

HOTWATER TO THE TAPS

7

CIRCULATION PIPE TO COLLECTOR

8

CIRCULATION PIPE TO HOT TANK

9

VENT PIPE

TABLE 1/24 - SOLAR WATER HEATER INSTALLATION

INSTALLATION EXAMPLE No 2: ROOF TANK WITH BRANCH IN MAIN COLDWATER
PIPELINE CONNECTING THE SWH-SYSTEM
REQUIRES: 1 NON-RETURN VALVE


Figure

1

COLDWATER STORAGE TANK

2

HOTWATER STORAGE TANK

3

COLLECTOR

4

COLDWATER PIPELINE

5

COLDWATER TO HOT TANK

6

HOTWATER TO THE TAPS

7

CIRCULATION PIPE TO COLLECTOR

8

CIRCULATION PIPE TO HOT TANK

9

VENT PIPE, INSULATED

10

CHECK (NON RETURN VALVE)

Note:

A book “solar water heaters in Nepal-manufacturing and installation” with relevant information, was prepared through the same publishers.

TABLE 1/25 - SOLAR WATER HEATER INSTALLATION

INSTALLATION EXAMPLE NO 3: TOWN SUPPLY (24 HOURS/DAY) WITH LOW-PRESSURE CONDITION
REQUIRES: 1 NON-RETURN AND 1 SAFETY VALVE

Note: Head of town supply resp. of supply pipe has to be less than 20 meters where low-pressure hot water storage tanks are utilized.


Figure

1

COLDWATER, TOWNSUPPLY

2

HOTWATER STORAGE TANK

3

COLLECTOR

4

COLDWATER TO HOT TANK

5

CHECK (NON-RETURN VALVE)

6

SAFETY VALVE

7

HOTWATER TO THE TAPS

8

CIRCULATION PIPE TO COLLECTOR

9

CIRCULATION PIPE TO HOT TANK

10

AIR VALVE

TABLE 1/26 - SOLAR WATER HEATER INSTALLATION

INSTALLATION EXAMPLE NO 4: OPEN HOTWATER OUTLET SIMPLE AND LOW-COST
INSTALLATION, BUT FOR ONE (OR TWO) HOTWATER OUTLETS ONLY.


Figure

1

COLDWATER SUPPLY

2

HOTWATER STORAGE TANK

3

COLLECTOR

4

COLDWATER TO HOT TANK

5

HOTWATER TO SHOWER

6

TWO-WAY VALVE, IF FOR TWO HOTWATER OUTLETS

7

EVENTUALLY: AIR VALVE

8

CIRCULATION PIPE TO COLLECTOR

9

CIRCULATION PIPE TO HOT TANK

Note:

For hotwater on shower only: Install pipe No 5, but not pipe No 6 and without a 2-way valve/for double use, i.e. shower or washbasin install pipe No 6 incl. 2-way valve, but not pipe No 5.

TABLE 1/27 - SOLAR WATER HEATER INSTALLATION

INSTALLATION EXAMPLE NO 5: ROOF TANK, WITH SEPARATE COLDWATER PIPE TO THE FLAT TANK COLLECTOR,
REQUIRES NO SPECIAL VALVES.


Figure

1

COLDWATER STORAGE TANK

2

FLAT TANK COLLECTOR

3

COLDWATER PIPELINE

4

COLDWATER TO FLAT TANK COLLECTOR

5

HOTWATER TO THE TAPS

6

VENT PIPE

7

DRAIN (TEE WITH PLUG OR VALVE)

TABLE 1/28 - SOLAR WATER HEATER INSTALLATION

INSTALLATION EXAMPLE NO 6: ROOF TANK WITH BRANCH IN THE MAIN COLDWATER PIPE TO THE FLAT TANK COLLECTOR
REQUIRES: 1 NON-RETURN VALVE


Figure

1

COLDWATER STORAGE TANK

2

FLAT TANK COLLECTOR

3

COLDWATER PIPE

4

COLDWATER TO FLAT TANK

5

HOTWATER TO THE TAPS

6

VENT PIPES

7

DRAIN TEE WITH PLUG OR VALVE

8

CHECK (NON-RETURN VALVE)

TABLE 1/29 - SOLAR WATER HEATER INSTALLATION

INSTALLATION EXAMPLE NO 7: PREHEATER TO ELECTRIC HOT WATER TANK, INCREASES
THE HOTWATER CAPACITY, REDUCES ELECTRICITY CONSUMPTION


Figure

1

COLDWATER STORAGE TANK

2

ELECTRO-OR GAS HOT TANK

3

FLAT TANK COLLECTOR

4

COLDWATER PIPE

5

COLDWATER PIPE TO FLAT TANK COLLECTOR (AND TO ELECTRO-OR GAS HOT TANK)

6

HOTWATER TO THE TAPS

7

BYPASSES (TO ENABLE DIRECT USE OF ELECTRO HOT TANK ONLY)

8

VENT PIPES

9

DRAIN (TEE WITH PLUG OR VALVE)

TABLE 1/30 - DIMENSIONING, EXAMPLES

LOW PRESSURE (ROOF TANK)

DIMENSIONS ACCORDING UNITS, TABLE A


Figure

TABLE 1/31 - DIMENSIONING, EXAMPLE

LOW PRESSURE (ROOF TANK)

DIMENSIONING ACCORDING UNITS, TABLE A


Figure

TABLE 1/32 - DIMENSIONING. EXAMPLES

LOW PRESSURE (ROOF TANK)

DIMENSIONS ACCORDING UNITS, TABLE A


Figure

TABLE 1/33 - DIMENSIONING, EXAMPLE

PRESSURE, TOWNSUPPLY

DIMENSIONS ACCORDING UNITS/TABLE B


Figure

TABLE 1/34 - DIMENSIONING, EXAMPLE

PRESSURE, TOWNSUPPLY, ACCORDING UNITS/TABLE B


Figure

Note:

All circulation pipes have to be insulated!

Gravity circulation system (without pump) rule of thumb: The horizontal (H) may not be longer than the vertical length (V). The diameter of the circulation (backflow) pipe to be appr. two dimensions smaller than the forward pipe (but at least 1/2” .

TABLE 1/35 - DIMENSION-CALCULATION EXAMPLE

PIPELINE - SCHEME


Figure

CALCULATION FOR THE LOSS OF HEAD:

pipe

section

units

max. load ltrs/min.

I> inches

length meter

addition %

total length m.

loss of head









mm/m

total mm

B

1-2

0.5

5

1/2

1.80

100

3.60

25

90


2-3

1.0

10

1/2

3.20

100

6.40

85

544


3-4

5.0

30

3/4

3.00

100

6.00

170

1020


4-5

9.0

38

1”

3.00

100

6.00

80

480


5-6

13.0

44

5/4

3.00

100

6.00

28

168


6-7

17.0

48

5/4

6.80

100

13.60

33

448


1-7




20.80




2750


Water meter

27.0

60

1”

-


-


2650


connection

27.0

60

5/4

52.00

50

73.00

50

3650










9050 mm










(9.05m)

C

8-9

2.0

20

1/2

2.70

100

5.40

290

1566


9-10

3.0

24

3/4

3.50

100

7.00

170

840


7-10

4.0

27

1”

28.40

70

48.30

47

2270


7-8




34.60




4676


Water meter connection

27.0

60

1”

-

-

-

-

2650



27.0

60

5/4

52.00

50

73.00

50

3650










10976 mm










(10.976m)

DIMENSION-CALCULATION EXAMPLE

Explanations to the example table 1/35

In most cases it will be sufficient to check the dimensions after using the simplified method (unit, dimensioning table)

The calculation-bases are the following:

a) Lowest dynamic pressure of 0.5 kg/cm2 on the highest fixed tap. This pressure is absolutely necessary to guarantee a normal water-flow and to prevent any re-suction from waste-water into the drinking water pipeline.

b) Highest loss of head of 1.0 kg/cm2 in the whole installation (including the feeding-pipeline and the water meter).

c) Consumption of water according to the probable maximum load in domestic and office buildings (according to table). For industries, fire-hydrants etc. the highest load has to be calculated according to the actual consumption in US.

d) Effective length of the pipelines has to be measured at the building sites or from the plans. The effective length must be increased to include also the losses of head in the fittings.

feeding - lines + appr.
house-installations appr.

50% (to the effective length).
100% (to the effective length).

Example for the control of the measurements from an installation

indications:

- Lowest pressure on the connection

40

m

watercolumn

- Height-difference between the connection and the highest-placed tap

22

m

WC

- Static-pressure on the highest tap

18

m

WC

- Length of the connection line

52

m


- Inside-pipeline according to the scheme




Calculation of the pipeline 'B'

Make provisional statement of the consumer units and diameter according to the pressure table.

Calculate the loss of head in the separate pipeline-sections 'B', beginning from the water meter and from the connection.

DIMENSION-CALCULATION EXAMPLE

Total loss of head of the installation 9.76 m water-column, that is less than 10 m.

Dynamic-pressure on the highest placed tap 3.24 m, that means more than 5 m.

Final Conclusion: The dimensions according to the easy method are sufficient (unit, dimensioning table).

Calculation of the pipeline 'C'

Length, beginning from the water-meter 34.6 m

To consider this pipe length, there is the adjustment from the section 7-10: The diameter is changed into 1” Æ (instead 3/4”Æ for 4 units).

Calculation for the loss of head in the pipeline 'B'

Total loss of head: 11.99 m, that means 20% more than the admissible loss of head from 10 m. But this difference is tolerable, because the connection is for adjoining rooms, and because pipeline has little influence on the feeding of the main-building.

Water Meter

The produced loss of head in a water meter may determined with diagrams or with a calculation. Therefore take the waterflow with a loss of head 10 m.

Water meter 25 mm = 7 m3 h with a loss of head of 10 m. For the waterflow of 60 litre/minute, that means 3.6 m3 h, result in a loss of head in the water meter of:

Connection

For the calculation of the loss of head in the connection pipeline, it may be assumed to take 10% of the net (town-line). An additional charge of 50% on the length of the pipeline will be sufficient, to consider the armatures and other special pieces. That is because they will be less numerous than the inside installations.

Assumable loss of head 10/%

=

4 m

Calculated loss of head

=

3.65 m

Also in this case the easy method is sufficient to determine the diameter, even when the connection-line is longer than 30 m.

TABLE 1/36 - GUIDING PRINCIPLES FOR WATER REQUIREMENTS

Purpose

Unit

Requirement

Consumer/Time

Min.

Medium

max.

Domestic Purposes:




drinking, cooking, cleaning

person day

50

80

120

laundry (washing)

person day

10

20

40

bathing, douche

person day

50

100

180

WC-cistern, flush

person day

40

50

60

cleaning of a car

car

150

250

400

Domestic Buildings:




modest conditions

inhabitant day

100

150

200

medium comfort

inhabitant day

150

200

300

higher standard

inhabitant day

250

400

600

Public:




schools

student day

10

12

15

hospitals

patient day

300

450

600

bathing establishment

500 - 600 bath

500

550

600

restaurants (for meals)

guest day

60

100

150

barracks (army)

man day

50

100

150

covered market

m2 day

3

4

5






slaughter houses

cattle/big

400

450

500

slaughter houses

livestock, small

300

350

400

wash institution

kg (dry wash)

50

60

70

open yard(grass field)

m2 surface

1

1.5

2

road sprinklers

m2 surface

1

1.25

1.5

car workshop

employee day

30

40

50

backery (bread)

employee day

120

130

140

hair-dresser

employee day

160

170

180

photo-studio

employee day

280

300

320

administration-building

employee day

30

40

50

Industries:




brewery (without cooling)

100 ltr. beer

600

700

800


(with cooling)

100 ltr. beer

1400

1700

2000

dairy

100 ltr. milk

400

500

600

paper factory

kg, fine paper

1500

2200

3000

Farming Purposes:




horses

1 pc. day

60

70

80

cows

1 pc. day

60

65

70

young cattle

1 pc. day

40

45

50

pig

1 pc. day

15

20

25

sheep goats

1 pc. day

5

6

7

* According international standards

TABLE 1/37 - LOSS OF HEAD-CHART/G.I. PIPES


Figure

TABLE 1/38 - LOSS OF HEAD - CHART


LOSS OF HEAD IN POLYETHYLENE PIPES (WATER AT 10°C)

TABLE 1/39 - MAXIMUM LOAD CHART - UNITS INTO LTR/MIN


Figure

TABLE 1/40 - G.I. MATERIAL LIST

BUILDING SITE: __________________________SECTION______________________________

SUBJECT: COLD- OR HOTWATER DATE:

DATE

SIG.

ARTICLE N2

3/8

1/2

3/4

1”

5/4

1 1/2

2”

3”

4”

PIPES GALV. G.I.























































PIPES TOTAL





















PIPES GALV.











WITH PAINT











WITH BANDAGE











PIPES PROTECTED










SOCKET 270
































ELBOW 90











































BEND 90° 3





















BEND 45” 8










CROSS TEE 180










REDUCER SOCKET 240










TEE 130





















FLANGE 329










UNION 330





















PLUG 230










CAP 301










NIPPLE 530





















CLAMP
































SADDLE CLAMP





















SCREW/DOWEL





















GATE VALVE





















TAP (BIB COCK)





















GLOBE VALVE (CHROM)