Ground PHC Pile Mount SR-G9

A prestressed high-strength concrete pile, driven to depth through water or soft ground — and a frame that clamps on, not in. Two galvanised half-hoops bolt around the Ø300–500 mm pile head and carry every load through friction and bearing: 0 site welds, 0 drilled holes, no grout collar. Height and level adjust on the hoops before final torque.

Part of the ground mounting range — built for fishponds, tidal flats, reservoirs and soft-soil sites, with four corrosion systems matched to permanent waterline exposure.

On the pile — nothing pierces it

Upper and lower clamp hoops bolted around the PHC pile head
Upper & lower hoops — HDG steel, bolt-on. Loads transfer through friction and bearing.
Frame bolted to the hoop ears — bolted joint, no field welds
Frame bolts to the hoop ears — 0 site welds, 0 drilled holes in the pile.

Driven, clamped, built — five steps

Step 1 — PHC piles driven to depth and line
01 · Drive the piles
Step 2 — clamp hoops bolt around the pile head
02 · Bolt the hoops
Step 3 — columns, tilt beam and brace bolt to the ears
03 · Raise the frame
Step 4 — purlins cross-tie bays into a continuous table
04 · Tie the bays
Step 5 — clamp the PV and clip the drainage
05 · Mount the modules

Benefits

  1. Bolt-on clamp hoops grip the Ø300–500 mm pile head — 0 site welds, 0 drilled holes, no grout collar; re-levellable before final torque.
  2. Four corrosion systems for the waterline — HDG hoops ≥85 µm, ZAM C-profiles ≥275 g/m², zinc-flake fasteners ≥1000 h salt spray, anodized Al + SS304 clamps.
  3. Five bolted steps raise the array from a barge, pontoon or causeway — designed to ≤50 m/s wind and ≤1.4 kPa snow at pile spacing up to 7 m.

Applications

Fishponds & aquaculture, tidal flats & coastal sites, reservoirs & lakes, and soft-soil ground — arrays that stand in permanently wet conditions.

Compatible roof and site types

  • Framed PV modules, portrait or landscape
  • PHC spun piles Ø300 / 400 / 500 mm

Components

  • PHC spun concrete pile — driven foundation
  • Clamp hoops ×2 — HDG steel, bolt-on
  • Vertical columns — ZAM C-profile
  • Tilt beam — sets the angle
  • Diagonal brace — wind & uplift
  • Purlins — module rails
  • Module clamps — anodized Al + SS304
  • Drainage clip — sheds runoff

Technical parameters

Ground PHC Pile Mount SR-G9 — indicative parameters. Final values follow project engineering.
ParameterValue
FoundationPHC spun concrete pile, driven
Pile diameterØ300 / 400 / 500 mm
Pile-to-frameBolt-on steel clamp hoops (upper + lower)
Hoop materialHDG steel, ≥85 µm zinc
Frame profilesZAM C-profile, ≥275 g/m²
FastenersTDC zinc-flake, ≥1000 h salt spray
Module clampsAnodized Al 6005-T5 + SS304
Module layoutPortrait or landscape
Tilt angle10–35° fixed
Pile spacing≤7 m (site-engineered)
Wind / snow≤50 m/s / ≤1.4 kPa
Warranty12 years, in writing
Design life25+ years
Guide referencePHC Pile Mount · PHC-FS · EN

Material and coating options

ParameterValue
MaterialPHC spun concrete pile; HDG steel hoops; ZAM C-profile frame; anodized 6005-T5 aluminium + SS304 clamps
Finish / coatingHDG ≥85 µm; ZAM Zn-Al-Mg ≥275 g/m² (self-heals at cut edges); TDC zinc-flake ≥1000 h salt spray; anodized aluminium

Engineering basis

Every load path is bolted: two half-hoops transfer frame loads to the pile through friction and bearing — nothing pierces the concrete. Pile length, embedment and spacing are engineered per site (bathymetry, soil, wind zone); the diagonal brace takes wind and uplift, and purlins cross-tie bays into a continuous table.

  • Site-specific stamped design; fastener coating salt-spray tested ≥1000 h; Zn-Al-Mg frame coating ≥275 g/m²

How Solaracks runs wind load calculations →

Installation and packing notes

Driven, clamped, built — five bolted steps: drive the piles, bolt the hoops, raise the frame, tie the bays, mount the modules and clip the drainage. No site welding, no wet trades; fast to raise from a barge, pontoon or causeway.

Packing and installation control →

Calculation basis: AS/NZS 1170.2 / ASCE 7-22Stamped design & quote: 24 hWarranty: 12 yearsDesign life: 25+ years

Frequently asked questions

Does anything get welded, drilled or grouted on site?

No. Two galvanised half-hoops bolt around the pile head and carry every load through friction and bearing — 0 site welds, 0 drilled holes, no grout collar.

How does it survive standing water and salt air?

Four corrosion systems, each matched to its job: HDG hoops (≥85 µm), ZAM C-profiles (≥275 g/m², self-healing at cut edges), zinc-flake fasteners (≥1000 h salt spray) and anodized aluminium clamps on stainless bolts.

What pile sizes and spacing does it use?

PHC spun piles Ø300, 400 or 500 mm at up to 7 m spacing — length, embedment and spacing are engineered to each site's bathymetry, soil and wind zone.

What warranty do I get?

12 years, in writing — on a structure with a 25+ year design life. Proven over water: a 30 MW fishery-solar plant in Vietnam runs on this system.

Get an engineered mounting quote for your project.

Share drawings, module layout, site location, wind load, snow load and corrosion environment. Solaracks will recommend the system, material, layout and packing approach.

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