Sổ tay kỹ thuật thi công công trình cấp nước

1

04.2012





THI CÔNG
CÔNG TRÌNH 



2012




06/06/2012

Sổ tay Kỹ thuật Thi công Công trình Cấp nước (v.1)
2























TP. HỒ CHÍ MINH – THÁNG 06 NĂM 2012
Sổ tay Kỹ thuật Thi công Công trình Cấp nước (v.1)
3


  




       


.
          



 








               


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Sổ tay Kỹ thuật Thi công Công trình Cấp nước (v.1)
4


 Symbol drawing of water
supply network. 9
I. (Symbol) 9
II. (Symbol details) 9
III. (Valve symbol) 10
IV. (Other details) 10
1.B cha, th(Reservoir, Tanks) 10
(Pump) 11
3.Các chi tit khác (Other details) 12
 Technical digging trenchs 13
I. (Principle) 13
II. (Order of execution) 13
1.Chun b mt bng (Ground preparation) 13
2.Ct mng (Cut the tarmac) 13
3.K thung (Technical digging trenchs) 14
3.1. (Digging manual) 14
3.2. (Mechanical digging) 14
(Digging trenchs) 15
5.Ch (Resist digging trenchs) 16
6.Các cách thi công giàn giáo (Construction scaffolding) 17
Transportation and
storage pipes in site 18
I. (Transportation and gathering
in site) 18
II. (General Precautions) . 20
1.Cu ng (Lifting) 20
2.S dng các móc (Use of hooks) 20
III.  (Storage) 21
1.ng Gang (Cast Iron pipe) 21

2.ng nha uPVC (uPVC) 22
IV.  (Storage conditions) 22
Construction and istallation of pipes 25
I. g  (Ductile iron pipe installation) 25
1.Xung (Laying) 25
2.V sinh mi ni (Clean) 25
3.Lp joint vào mi ni (Position the gasket) 25
Sổ tay Kỹ thuật Thi công Công trình Cấp nước (v.1)
5

 sâu thúc (Mark the socket depth) 26
5.Tra m i ni (Lubricate) 26
6.Lu ni ng (Assemble) 27
7.Kim tra mi ni (Check) 27
 bê tông canh chn ti mi ni (Anchor blocks) 27
9.Mt s bin pháp thi công ng Gang (Pipe laying equipment) 28
9.1. Dùng xà beng (Crowbar) 28
9.2. (Asembly using digger bucket) 29
9.3.  (Mechanical winches) 29
II. (HDPE
pipe installation guide (By the method of welding) 31
1.Mt s v c(Some issues to note) 31
2.Công tác chun b c khi hàn (Preparation before welding) 31
3.Thi công hàn ng. (Welded construction) 32
3.1. (Chamfer pipe) 32
3.2. (Welded pipes) 33
3.3. (Weld inspection (by eye)) 33
III. (PVC pipe construction engineering) 35
ng dn lt (Installation Instruction) 35
2.Mt s c bit (A number of special note) 36

1.1.  200mm) (Case 1 (DN 100 –
200mm)) 36
1.2.  50mm) (Case 2 (DN 21 – 50mm))
38
IV. (Installation uPVC pipes) 40
1.Chun b(Preparation tool) 40
2.Lt (Installation) 41
 Re – established 44
I. (Filled the trench) 44
II. (Backfilling and tarred) 45
Bolt tightening method 51
I. (Standard Application) 51
1.Trình t công tác lp bu-c thc hi 51
Polyethylene sleeving 54
I. (Conditions of use) 54
II. (Technical characteristics) 54
(Installation process) 54
Sổ tay Kỹ thuật Thi công Công trình Cấp nước (v.1)
6

Repair prestressed
concrete cylinder pipe. 59
I. (Emergency Replacement kit) 59
II. (Welded repair joint) 63
III. (Emergrncy repair saddle) 63
. Flushing
methods are being applied 64
I.  (normanlly) 64
1.Nguyên tc thc hin (Principle) 64
 tính toán: (Foundation) 65

3.Yêu cu trong quá trình thc hin (Required in the flushing procedure)
66
4.Mt s hn ch và phm vi áp dng (Field of application) 66
II. (Cleaning by polypigs) 68
1.Khái nim (Concept) 68
2.Yêu cu trong quá trình thc hin (Required of the flushing procedure)
69
c hin (Method) 69
4.Phm vi áp dng và hn ch (Field of application and restriction) 70
4.1. (Field of application) 70
4.2. (Restriction) 71
5. m (Advantages) 71
 -12. Cut tee and do not
close the water 72
I. -12 (Equipment) 72
II. -12 (Steps in preparing and
operation) 72
  25 mm. Menthod of sealing water
meter D15mm – 25mm 84
I. (Prepare) 84
II. (Steps of the press lead) 84
1.Bm chì cho loi ng ngánh OD 25mm (Press lead for pipe industry OD
25mm) 84
2.Bm chì cho ng ngánh OD27(Press lead for pipe industry OD 25mm)
85
III. (Notes) 87
1.X ng ng h c (Thread the wire into the meter
body) 87
Sổ tay Kỹ thuật Thi công Công trình Cấp nước (v.1)
7

2.Kim tra chì sau khi bm (Check lead after press) 87
Repair ductile iron. 88
I.   (Cutting of Pipe) 88
1.Kim tra (Inspection) 88
2.Các dụng cụ và thiết bị (Tools and equipment) 88
3.c thc hin (Procedure) 89
II. Correction of Deformed Spigot) 91
1.Kim tra (Inspection) 91
2.Dng c và vt liu (Tools and equipment). 91
3. thc (Procedure) 92
III. (large cracks, deformation of pipe body
is expected) 94
1.Kim tra (Inspection) 94
2.Thao tác (Procedure) 95
IV.  (chip) 97
1.Dng cu và thit b (Tools and equipment) 97
2.Kim tra ( Inspection) 97
3.Quy trình (Procedure) 97
V.  (Break) 99
1.Các thit b phc vc cho công tác sa sa. Nên dùng các công c (Tools
and convenience of the repair work, use of the following tools is
recommended) 99
2.Kim tra (Inspection) 99
3.Quy trình (Procedure) 99
VI. (Repair of External Coating) 101
1.Dng c, thit b (Tools and equipment) 101
2.c (Procedure) 102
Manual measuring devices 103
I. Panme (Micrometre) 103

1.c m (Characteristics) 103
 (Measuring) 103
c tr s (Indicator reading) 104
II.  (Calipers) 105
1.c m (Characteristic) 105
2.Phân loi (Sort) 105
Sổ tay Kỹ thuật Thi công Công trình Cấp nước (v.1)
8

III. (The Durometer (A rubber hardness tester)
107
m và công dng (Characteristics and use) 107
2.Gii thiu hai long h so thông dng và các thông s n
(Introduce the Durometer and Technical Specification) 107
2.1. (Mechanical rubber hardness tester) 108
2.2. (Electron rubber hardness tester) 108
3.Các dng h  cng gp (The measuring
instruments the Durometer) 108
IV. (Coating Thickness gages) 109
m và công dng (Characteristics and use) 109
2.Gii thiu mt s   và các thông s n
(Introduce Coating Thickness gages and Technical Specification) . 109
V. (Niveau) 110
m, công dng và nguyên tc hong (Characteristics, purpose
and principle of operation) 110
2.Cách nhn dng niveau cân bng hay không cân bng (Ways to identify
neveau is balance or imbalance). 111
VI. (Calipers). 112
VII.Com(Inside caliper). 112
(Circumference Tap). 112

 113
 114
 115
 116
 117
 118
(References) 119

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9

 trên .
Symbol drawing of water supply network.

I.  (Symbol):
1.  (Water supply pipeline):







2.  (Other lines):

II.  (Symbol details):






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III.  (Valve symbol):

IV.  (Other details):
1.  (Reservoir, Tanks):

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2.  (Pump):










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3.  (Other details):
























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 

Technical digging trenchs.

I.  (Principle):
  vì
        
trong thao tác l
Do not dig trenchs too wide or narrower than the size allowed for if wide
it will wasting materials and labor, if narrow will cause difficulties in
manipulating pipe and fittings installed.
 
Digging trenchs must be flat.
II. Trình  (Order of execution):
1.  (Ground preparation):

 
General arrangement of space construction based on the general ground
construction engineering design drawings of construction, the
construction sequence items out.


             rào
chắn, biển báo 
Pay attention to the requirements and safety regulations on construction,
environmental sanitation, dust, noise, fire, security, guaranteed not to
affect operation of the surrounding areas with system barrier system,
warning signs in accordance with

Mark digging
2.  (Cut the tarmac):
Sổ tay Kỹ thuật Thi công Công trình Cấp nước (v.1)

14



3.  (Technical digging trenchs):
3.1.  (Digging manual):
  


Scope of application: apply to small works (installation of branch
pipes ), the narrow scope of construction, there is no ground to
dig manually operated vehicles
 (Tools):
+  chim, xà beng.
With ground level 2, 3: use manderel, crowbar
+ , 
With ground level 1: use shovel
 (Digging):
+ 
         
           

Use manderel, crowbar crowbars to break the cable 2
and 3, each 0.2 m layer to avoid falling back into spoon
digging operations and vacant land where construction
and installation of pipe and move
3.2.  (Mechanical digging):
Sổ tay Kỹ thuật Thi công Công trình Cấp nước (v.1)
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

Scope of application: For large-scale expose
ensure ground
(Equipment):
 (Excavator)
4.  (Digging trenchs):


+ 
n  



Digging trenchs must dug to the correct
depth specified by design, if digging deeper
trenchs designed to allow to fill them with
fine soil or sand to a depth regulations,
dress carefully watered to avoid skewing the
pipelines subsidence.



+ 

        
        

Bottom digging trenchs must be clean, flat.

At the positions of fittings, joints, to dig
deeper trench bottom 0,1 m to the entire
body is exposed on the bottom of the pipe
trench.

+ 

A rocky trench digging deeper and then
filled up with sand flat.

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+  

       
t2 x 150 +d.
Correct width to dig trenchs width design
rules. In case of improper design, the bottom
width of trench dug by the formula: 2 x 150
+ d.
+ 
    

Width of trench digging may extend over the
bottom of trench to dig ditches for wall slope
to avoid erosion.
+  (Note):
 





In the case of ditches dug beneath groundwater or storm water
flooding should take measures to shielding measures to avoid
erosion and water pump used for digging ditches dry, If the soil
dug trench bottom is wet due to flooding, dredging clean backfill
soil in both wet and compacted carefully before install tube.
 
g.
In the case of soft soil can erosion to take measures to shield
walls and ditches dug carefully during construction.
5.  (Resist digging trenchs):
 (General requirements):
     
thì 
 :
(To ensure safety during construction excavation time digging trenchs
must resist digging trenchs to avoid erosion, the excavation time digging
trenchs to support):
+  (Quick assembly).
+  (Make sure the bearing capacity).
+  (Remove easily
after performing finish work).
+             
(Make sure the space of need in the area of construction tube
assembly).
Sổ tay Kỹ thuật Thi công Công trình Cấp nước (v.1)
17

6. Các cách thi công giàn giáo (Construction scaffolding):
giáo 
 (There are many ways of construction scaffolding prop
digging trenchs but commonly used 2 ways).

+    (Horizontal boards
placed).
 
Advantages: Insert the board quickly.
      

Defect: Difficult dismantling when
finishing work.




+  (Vertical boards placed):
  
    Advantages:Ease
of construction and dismantling when
complete the work .
  
ván ngang.
Defect: Consuming more material
horizontal board mounting type.

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18

 .
Transportation and storage pipes in site.


I.  (Transportation and gathering in
site):
1.  (Lifting):





2.   (Lifting by hand).



+ cáp  (Use of wire rope or nylon
sling).
+ 
     (Enrure the load of pipe and fittings is
correctly balanced so that wire rope or nylon sling does not slip out).
 
         
(Pipe: Use of wire rope.
Sổ tay Kỹ thuật Thi công Công trình Cấp nước (v.1)
19

Place cushion pads to protect pipe surface. Do not lift pipe with
single rope. With rubber is highly recommended).

 
          
tùng.(Fittings: Use of nylon sling is highly recommended.
Place rubber pieces to avoid rapid abrasion of nylon sling).
3.  (Use of hooks):



+ Khi s dng các móc. Cn th các lp va bên trong b 
(When using hooks, be careful not to damage the pipe or lining).
+ Móc cn có ming bc bng cao su.(Cover hooks with rubber pieces).
+  u nhn cng lp va ca ng (Make
sure sharp point of hook does not damage the lining).


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20

II.   (General Precautions)
1.   (Lifting).

.
Use of wire rope or nylon sling.


Enrure the load of pipe and fittings is correctly
balanced so that wire rope or nylon sling does
not slip out.

         



Pipe: Use of wire rope. Place cushion pads to
protect pipe surface. Do not lift pipe with single
rope. With rubber is highly recommended.


         
         

Fittings: Use of nylon sling is highly
recommended. Place rubber pieces to avoid
rapid abrasion of nylon sling

2.  (Use of hooks)

        


When using hooks, be careful not to damage
the pipe or lining.
Cover hooks with rubber pieces.

Sổ tay Kỹ thuật Thi công Công trình Cấp nước (v.1)
21


        

.
Make sure sharp point of hook does not
damage the lining.



III.  (Storage):
1.  (Cast Iron pipe).
.
Storage class for a maximum of arrangement (for pipes Class K9).


ARRANGEMENT
 (Diamater)
100
150
200
250
300
350
400
450
500
600
700
800
900
1000
Hình Tháp
(TH.1)LOW

58
40
31
25
21
18
16
14
12
10
7
6
5
3

(TH.2,3)
STANDARD
27
22
18
16
14
12
11
10
8
7
5
4
4

3



Sổ tay Kỹ thuật Thi công Công trình Cấp nước (v.1)
22

2.  uPVC (uPVC):



        

Install belled pipe must be arranged
correctly in transport or store.
 :
Arrangement metheds :
        

The belled pipe ends must not touch
together.
        
1.5m.
Belled pipes must be arranged in the
bracket with height up to 1.5m.

IV.  (Storage conditions):

Storage conditions


Pipes
JOINT CAO SU
Rubber gaskets

The storage temperature

  
25
o
C
(Storage temperature
should be below 25
o
C)

The humidity of the storage
atmosphere




Exposure to light


Do not expose to light

Store in cool and dark.

ánh sáng.
Do not expose to light


Length of storage


06 years after production

Avoid


Avoid slopes or
unstable land place


Avoid muddy, dirty
areas.

    

No joint is taken out of the
packaging layer.

các

Stay away from solvents,
oils, greases and other
substances degradation.
Sổ tay Kỹ thuật Thi công Công trình Cấp nước (v.1)
23




Avoid directly on the
ground, especially soil
erosion likely.



Should be stored at normal
state, do not pull or strain
compression.
 


If you can not avoid
distortion, do so in the
short term storage


Storage conditions

Preservation
Tránh
Avoid

The storage temperature


o
C.
Storage temperature

should be below 25
o
C

 (The humidity of the
storage atmosphere)



(Exposure to light)


Rubber gasket should
be stored in a cool and
dark place.

ánh sáng.
Do not expose to light.


Length of storage



A maximum of 06 years
after production


Avoid



Please don’t take joints
out of the packaging
- 
     

Rubber gasket should be
kept away from solvent,
oil, grease and other
deterious material.
-      

    

The rubber gasket
should, wherever
possible, be stored in a
relax form free from
Sổ tay Kỹ thuật Thi công Công trình Cấp nước (v.1)
24

tension, compression or
other deformation.
- 


If it is impossible to
avoid deformation, it
should be kept to a

minimum.





Storage for comparatively short
periods.


      
Storage for longer periods.

     

It s recommended to but the gaskets
in a box or wrap them up in paper,
vinyl sheet or other suitable
material.


   
     


Joint must be removed from fire,
chemical, solvent. Do not heap to
avoid variation of joint.
 (Gethering pipes in the contruction site).



Gethering pipes and fittings in the
contruction site have to ensure traffic safety


The socket and spigots of pipe have to be
sealed off before laying into trence.
Sổ tay Kỹ thuật Thi công Công trình Cấp nước (v.1)
25

 .
Construction and istallation of pipes.


I. g (Ductile iron pipe installation).
1.   (Laying):
- 
Lower pipes into the trench without damaging them.
- Không  .
Do not hit pipe ends against the trench walls.



2.   (Clean):



Clean the pipe spigot, inside the
socket and the gasket.

3.   (Position the gasket):

 
.
Insert the gasket before lowering the
pipe into the trench.