Excavated trench layout
Show scale, depth, trench spacing and protected spoil piles.
COILED CLOSED-LOOP FIELD
Horizontal Slinky Geothermal Loops
Coiled polyethylene pipe is placed in engineered trenches to fit more pipe length into each run. Slinky fields can be useful when adequate open ground and excavation access are available.
GOOD STARTING FIT
Where this loop can make sense
Larger open lots with suitable soil, manageable restoration and enough separation from utilities, septic systems, structures and protected areas.
Lease-program note
A closed-loop horizontal slinky field is included in this site’s preliminary PremiumPath screen as a horizontal-trench concept. Final documentation, design, property, pricing and credit review still control.
A simplified, not-to-scale view of coiled geothermal pipe in parallel trenches. Actual trench count, depth, spacing, coil pitch and routing require site-specific engineering.
INSTALLATION SEQUENCE
How the field comes together
- 01
The designer sets trench count, length, depth, spacing, coil pitch, circuits and flow using the building load and local ground assumptions.
- 02
Trenches are excavated and kept safe and stable. Coils are assembled or positioned without kinks, sharp bends or damaged pipe.
- 03
Specified backfill, flushing, pressure testing and surface restoration complete the field before system commissioning.
PROS
- Avoids deep drilling
- Can use conventional excavation equipment
- Efficient pipe placement per trench
- Installation is visible before backfill
TRADEOFFS
- Needs meaningful open land
- Large disturbed and restored area
- Performance is sensitive to depth, spacing, moisture and soil
- Not a shortcut for an undersized field
FIELD DOCUMENTATION
What our team documents during installation
A useful project record shows the parts of the loop installation that affect access, performance, restoration and future service. These are the field views we document for this loop type.
Pipe coils before backfill
Capture coil pitch, supports, headers and undamaged pipe.
Backfill and restoration
Document protective fill, compaction approach and finished grade.
Future project-photo standard: real installation photos will be added only after customer authorization is recorded and each image is checked for faces, plates, addresses and sensitive documents.
SITE VERIFICATION
Questions the field review must answer
- ✓ Available trench footprint and equipment access
- ✓ Soil type, moisture and seasonal conditions
- ✓ Septic, utilities, drainage and property setbacks
- ✓ Coil pitch, trench spacing, backfill and restoration plan
FROM SCREENING TO SITE DESIGN