Park Range installs solid and hollow bar micropiles using hydraulics and air, with rotary or percussion heads, continuous flight augers and down-the-hole hammers. Micropiles are drilled and grouted piles with diameters 4″ – 6″. We typically install micropiles 30 – 100 feet into the ground supporting loads from 20 to 100 kips.
What is the benefit of using a micropile?
Micropiles are installed for new foundation support or for underpinning existing foundations. They are also installed diagonally for tension, tiebacks or soil nails. They are a perfect solution for drilling extremely hard rock and soil layers. Park Range can also install micropiles in spaces with low overhead clearance, basements and limited access areas to stabilize structures or for additional foundation support.
Micropiles are a great solution when using conventional concrete caissons is not possible. Problem conditions can be limited access job sites, soils with high blow counts, drilling into bedrock, obstructions, nearby structures and unstable areas such as sinkholes, underground rivers and caves.
The Advantages of Micropiles
- Limited access situations
- Ability to rock drill into soils with high blow counts and /or bedrock
- Can be installed with solid or hollow bar
- Can be installed through most ground conditions, obstructions and foundations at any incline
- Ensure minimum vibration or other damage to foundation and subsoil
- Can be installed in as little headroom as 7′ and close to existing walls
- Can allow facility operations to be maintained during construction
- Simple and economical connection to existing and new structures
- Can be preloaded and load tested
Common Uses of Micropiles
- To replace deteriorating foundation systems
- To provide extra support for structures during renovation
- Underpinning an existing structure for stabilization or for re-leveling
- To provide pile foundations where access, geology or environment prevent the use of other methods
- To support structures affected by adjacent excavation, tunneling or dewatering activities
- To provide a fast, effective alternative to more traditional underpinning methods