pipe laying

1. T R A I N I N G M O D U L E
02 - PIPELAYING

2. Pipe & Pipe laying works - Methodology
1. Materials
2. Storage & Handling
3. Pipe bedding
4. Open trench pipeline work
5. Manhole chamber & Special structures.
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3. T R A I N I N G M O D U L E
• 1
02 - PIPELAYING

4. Pipe & Pipe laying works - Methodology
1 . M a t e r i a l s
2 . S t o ra g e & H a n d l i n g
3 . P i p e b e d d i n g
4 . O p e n t r e n c h p i p e l i n e w o r k
5 . M a n h o l e c h a m b e r & S p e c i a l
s t r u c t u r e s .
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6. 1.Materials
Commonly using pipes for our Infra Projects
• GRP ( Glass Reinforced Plastic )
• GRE (Glass fiber reinforced epoxy)
• uPVC (unplasticized poly vinyl chloride)
• HDPE (High density polyethylene)
• MDPE (Mid density polyethylene)
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7. 2.Storage & Handling
D O :
• Tra n s p o r t S a f e l y f r o m o n e p l a c e
t o o t h e r
• I n s p e c t A l l p i p e s a n d f i t t i n g s
u p o n a r r i va l a t s i t e
• D o u s e s t ra p s , s l i n g s , r o p e s t o
l i f t t h e p i p e .
• D o s t o c k p i p e s s e p a ra t e l y b a s e d
o n M a t e r i a l & s i z e a n d s h o u l d b e
c o v e r e d
D O N ’ T:
• D o n ’ t u s e s t e e l / m e t a l w i r e t o l i f t
p i p e s
• A v o i d s h a r p e d g e s t o b e i n c o n t a c t w i t h
p i p e s
• D o n ’ t s t o r e u n d e r d i r e c t s u n l i g h t .
• D o n ’ t s t a c k p i p e s m o r e t h a n
p e r m i s s i b l e h e i g h t .
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8. Ensure Storage & Handling
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DO: DON’T:

9. PIPE JOINTS
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Pipes can be joinied by
1. Coupling
2. Spigot joints
3. Welding

10. Ensure Storage & Handling
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If you didn’t handle / store properly
Pipe will damage through
• Bend
• Crack
• Leak
• Broke
FOR GRP (Glass reinforced Plastic) pipes:
• Use Cradles to support the pipe.
• Don’t stock it directly on ground.

11. 3.Pipe Bedding
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W h y P i p e B e d d i n g ?
To s e c u r e p i p e s f r o m d a m a g e d u e t o e x t e r n a l f o r c e s
s u c h a s v e h i c l e m o v e m e n t s .
For uPVC :
Use approved granular agg – uPVC
For Other Pipes:
Use any crushed aggregates as a bedding material

12. Pipe Bedding
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13. Pipe Bedding Thickness
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• 1 5 0 m m ( m i n i m u m 1 0 0 m m u n d e r
s o c k e t s ) – P i p e s i n t e r n a l d i a w i t h i n
3 0 0 m m
• 2 0 0 m m ( m i n i m u m 1 0 0 m m u n d e r
s o c k e t s ) f o r p i p e s e x c e e d i n g 3 0 0 m m
i n t e r n a l d i a m e t e r

14. Pipe Bedding thickness
• 1 5 0 m m ( m i n i m u m 1 0 0 m m u n d e r s o c k e t s ) – P i p e s i n t e r n a l d i a w i t h i n
3 0 0 m m
• 2 0 0 m m ( m i n i m u m 1 0 0 m m u n d e r s o c k e t s ) f o r p i p e s e x c e e d i n g 3 0 0 m m
i n t e r n a l d i a m e t e r
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INTERNAL
DIAMETER OF PIPE
PIPE BEDDING
THICKNESS
PIPE BEDDING
THICKNESS UNDER
SOCKETS
Within 300 mm 150 mm 100 mm
More than 300 mm 200 mm 100 mm

15. 4.Open Trench Pipe laying work
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• C h e c k f i t t i n g s & c l e a n t h e p i p e
p r i o r t o l a y i n g a n d f i t t i n g
• C h e c k f o r d a m a g e o f t h e p i p e
b e f o r e l a y i n g
• L a y p i p e s a s p e r M e t h o d
S t a t e m e n t

16. Pipe welding (HDPE)
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• HDPE pipes welding should
only be done by Trained &
authorized personnel’s
• Used to carry Irrigation water
& Fire fighting works