Fence and post installation in narrow corridors, restricted yards and areas with limited headroom requires careful equipment planning. The drilling system must fit the working area while producing the required hole in the actual ground conditions.
Define the hole and the access
Record hole diameter and depth, post or foundation requirements, overhead clearance and the space needed to handle the drill and rods. Distinguish rock drilling from excavation in loose soil or direct post driving: each requires an appropriate method and equipment.
A compact pneumatic rock drill may be suitable for rock where larger equipment cannot be positioned. Suitability depends on the model, air supply, tooling and operating arrangement.
Select the equipment around the work
- Handheld rock drills: review for hole dimensions, orientation and manageable operating weight.
- Pusher-leg or supported systems: review where a controlled feed arrangement is appropriate to the drilling direction and available space.
- Post-driving attachments: review for direct driving with compatible hammers, posts and ground conditions.
A percussive hammer without a drilling mechanism is not interchangeable with a rotary-percussive rock drill. Select the machine for the required operation.
Match the shank, rods and bit connection
Confirm the drill's exact shank and collar dimensions. Drill steel connections may use integral, H-thread, tapered or rope-thread systems; components must belong to a compatible assembly.
Hex dimensions, including 22 mm and 25 mm where specified, do not establish compatibility on their own. Review the complete shank, rod, coupling and bit specification.
Plan rod lengths for limited headroom
Check whether the initial rod and drill fit within the available clearance. Short starter rods, including 0.6 m or 0.9 m configurations where available, may address restricted access. Extension drilling requires a compatible rod system and sufficient room to add and handle each section.
Confirm available lengths and the manufacturer's drilling capacity before committing to a setup.
Select bits for the ground and hole
Carbide cross bits and button bits are selected around rock characteristics, hole diameter, flushing and the drill's capacity. DTH systems require a different equipment and air-supply review. There is no single bit or rod configuration suitable for every fence installation.
Bit life depends on the material, operating conditions and maintenance. Use application records and the manufacturer's wear criteria rather than a general metres-per-bit estimate.
Review air supply and site controls
Size the compressor and hoses to deliver the required flow and pressure at the selected drill. Account for hose routing, other tools, flushing and lubrication requirements.
Restricted access does not by itself establish that an area is a regulated confined space. The contractor must assess the work area and plan utility clearance, dust control, ventilation, noise and equipment handling for the site.
Equipment and tooling review
Madido supplies pneumatic drilling equipment, drill steel and bits for contractor applications. Submit the hole dimensions, ground conditions, drill model, access constraints and available air supply to sales@madido.com. View related fence installation applications.