Pawar & Sons
Road & highway crossings
Stormwater drains, sewers and water mains under city roads, national and state highways, and ring roads, with traffic running throughout.
Jack pushing & pipe jacking Trenchless pipe pushing in Bangalore & Hyderabad
We push man-entry RCC and steel casing pipes under roads, highways, railway lines and buildings. Hydraulic jacks drive the pipes from a launch pit while our crew excavates by hand at the face, so nothing above has to close.
The pipe goes under. The road stays open.
Manual pipe jacking, also called pipe pushing or jack pushing, is the most dependable trenchless method for short and medium crossings in Indian ground conditions. It handles mixed soils, murrum and boulders, because a person at the face can see and remove whatever is there.
Compared with open cutting, there’s no road closure, no resurfacing across the carriageway, and far less risk to the cables and pipes already buried along the route.
Crossings we build
Wherever a new line has to pass under something that can’t be dug up or shut down.
Railway track crossings
Steel casing pipes and RCC box-line crossings beneath running tracks and embankments, carried out to the railway’s approved method and supervision.
Nala & canal crossings
Pipes taken beneath drains, nalas and irrigation canals without diverting the flow.
Under buildings & walls
Lines passed under compound walls, factory sheds, airport and industrial premises where surface work isn’t possible.
Sewer & stormwater networks
New trunk lines and outfalls in built-up areas where a trench would block access to homes and shops.
Utility casings
Casing pipes for power cables, telecom ducts, water and gas carrier pipes, sized to take future lines.
Pipes we jack
Manual jacking needs a person inside the pipe, so it suits man-entry diameters, generally around 900 mm and larger. We confirm the size and drive length for your crossing after the survey.
| Pipe | Typical use | Notes |
|---|---|---|
| RCC jacking pipes (NP4) | Stormwater, sewer, culverts | Heavy-duty class to IS 458, with joints made to take jacking loads |
| RCC pipes (NP3) | Shorter drives, lighter cover | Used where the design and jacking forces allow |
| MS steel casing pipes | Railway crossings, water and gas carriers | Carrier pipe is placed inside and the gap filled |
From our pipe jacking sites
A steel casing pipe crossing under way near the Outer Ring Road in Hyderabad. Our pipe jacking and pipeline clients include Ramky, MEIL and L&T. Tap any photo to enlarge it.
Our pipe jacking process
Survey & trial pits
We walk the alignment, locate existing utilities, check soil and groundwater, and fix depth, pipe size and pit positions.
Jacking & receiving pits
Pits are excavated and shored at both ends, with dewatering if the water table is high.
Thrust wall & guide frame
A reinforced concrete thrust wall is cast behind the jacks, and steel guide rails are set to the design line and level.
Jacking & hand excavation
The crew excavates at the face inside the lead pipe while hydraulic jacks push the string forward, one pipe at a time.
Line & level control
Alignment is checked at every pipe and corrected at the face, so the line arrives on target at the receiving pit.
Grouting & restoration
The annular gap is grouted, joints are sealed, and both pits are backfilled, compacted and restored.
What our crew handles
One team from the first trial pit to the final backfill, with our own jacks, power packs and pit equipment.
Ground we work in
- Clay & black cotton soil
- Silty sand
- Murrum
- Soft & weathered rock
- Mixed ground with boulders
- Site survey, trial pits and utility location
- Excavation and shoring of jacking and receiving pits
- Dewatering where groundwater is present
- Thrust wall, guide rails and jacking frame
- Hydraulic jacks and power packs
- Manual face excavation and muck removal
- Line and level control at every pipe
- Annular grouting and joint sealing
- Backfilling and restoration of pits
Pipe jacking questions
How long can a crossing be?
It depends on pipe diameter, soil, and the load the pipes and thrust wall can take. Most road and railway crossings are well within the range of manual jacking; longer drives can use intermediate jacking stations. We confirm the drive length after a site survey.
Which pipes are used?
Reinforced concrete jacking pipes, commonly NP4 class to IS 458, for stormwater, sewer and culverts. Mild steel casing pipes for railway crossings and for carrier pipes such as water and gas lines.
Can it be done below the water table?
Yes, with dewatering at the pits and along the alignment where needed. We check the groundwater level during the survey and plan the method around it.
Does the road or railway close?
No. All work happens in the pits at either side, so traffic and trains keep running above the crossing.
Pipe jacking near you
Got a crossing to make?
Send the location, pipe size and length, plus any drawings or approvals you already have. We’ll visit your site in Bengaluru or Hyderabad and send a method and quote.