Supplied by Macrete Shaft Construction
Precast Concrete
Segmental Shaft Systems
Empire Infrastructure supplies precast concrete segmental lining systems for access shaft construction on civil infrastructure projects, manufactured to precision tolerances and suitable for varied ground conditions, shaft diameters and depths.
Why Segmental Shafts
Built to precision tolerances
Precision Tolerances
Segments are manufactured to precision tolerances, so rings build true and the shaft can be sunk with confidence.
Varied Ground Conditions
The system suits varied ground conditions, shaft diameters and depths across civil infrastructure projects.
Safe, Deep Excavation
Segmental lining enables safe, deep excavation for access shaft construction, including launch and reception shafts for trenchless drives.
The Product
Precast concrete
segmental shaft systems
Empire’s precast concrete segmental lining systems enable safe, deep excavation for access shaft construction on civil infrastructure projects. Manufactured to precision tolerances and suitable for varied ground conditions, shaft diameters and depths. Available in diameters from 2.44m to 27.00m.
Empire supplies segmental shaft systems across Australia and New Zealand. Projects supplied include the shaft works at Lonsdale Street in Melbourne.
For project specific advice on shaft diameter, depth, ring configuration and ground conditions, contact Empire’s technical team.
Specifications
Segmental shaft systems at a glance
The summary below covers the segmental shaft range supplied by Empire. Detailed ring, segment and design data is available from Empire’s technical team for your shaft.
| Parameter | Specification |
|---|---|
| Diameter Range | 2.44m to 27.00m |
| Applications | Access shaft construction, deep excavation |
| Construction | Precision precast concrete segments |
| Ground Conditions | Suitable for varied ground conditions |
| Supplier | Macrete Shaft Construction |
Note: Confirm shaft diameter, depth, segment geometry, ring configuration and design loads with Empire’s technical team against your project drawings and geotechnical information. The contractor remains responsible for compliance with local regulations and for applying appropriate safety factors.
Datasheets, brochures and technical documents for the segmental shaft system are available to download in the Empire Engineer Portal. Go to the Engineer Portal
Applications
Where segmental shafts
are used
The precast concrete segmental shaft range supplied by Empire covers the following applications.
| Access shafts | Permanent and temporary access shaft construction. |
| Deep excavation | Safe, deep excavation on civil infrastructure projects. |
| Launch and reception shafts | Shafts serving microtunnelling and pipe jacking drives. |
| Varied ground | Suitable for varied ground conditions, shaft diameters and depths. |
In the Field
Segmental shafts on site
Frequently Asked Questions
Common questions on
segmental shaft systems
Quotes & Proposals
Lock in your shaft segment supply.
Tell Empire your shaft diameter, depth, quantity and location, and the team will respond with a quote. Typically within one business day.