Single-post fixed structures

STI-F3TM  is the most versatile fixed-tilt solar structure on the market. 

STI-F3™ fixed-tilt PV structures

It has been designed to fully optimize the installation of solar panels, thanks to its great terrain adaptability and multiple foundation options, and extend the life of the installation, due to the robustness and the quality of its materials.

Characteristics

Fixed structures for STI-F3™ solar panels

STI-F3TM is a single-post structure up to 4 meters wide, adaptable to module configurations of either 2-portrait or 4-landscape.

It has been specifically designed to adapt to steep slopes (N-S) and can be installed with direct pile driving. Other types of foundation options are available.

It has been designed according to the local regulations applicable in each country (CFE, NCH, AS/NZS), and the main international standards (ASCE and Eurocode).

With modules of 60 cells and tilts of between 25 and 35°, it adapts to the electrical configuration and needs of the project.

 

Proven system used in more than 1,500,000 m² of facilities

Proven system used in more than 1,500,000 m² of facilities

Versatile, adaptability to all types of soils and modules

Versatile, adaptability to all types of soils and modules

Resistant, made of hot-dip galvanized steel, they have a life of more than 25 years

Resistant, made of hot-dip galvanized steel, they have a life of more than 25 years

Instalation and maintenance

Thanks to the simplicity of its structure and its modular design, installation time is shortened. In addition, the learning curve for its assembly is very fast, enabling the quick training of installers and eliminating downtime.

  • The dimension and weight of the structure parts have been optimized to avoid the use of machinery. 
  • The number of references that make up the structures has been reduced, facilitating their control and recognition on site. 
  • 100% bolted joints. No need for welding, cutting or drilling on site for their installation.
  • Compatible with all PV modules on the market which can be mounted with retaining bolts, rivets or cramps.
  • Great adaptability to irregular terrain and high tolerances for foundation positioning deviations.
  • Assembly tools provided to facilitate installation without needing constant metric verifications.

What's more, the wide variety of foundations to which it adapts means the STI-F3TM structures can be installed on all types of terrain, minimizing and even eliminating the need for earthworks.

Installation types available

Direct pile driving

Direct pile driving

Indicated for cohesive soils of medium-firm consistency and granular soils of medium to dense consistency.

Pile driving with pre-drilling

Pile driving with pre-drilling

Indicated when direct pile driving is not possible due to the presence of localized rocky areas.

Concrete micropile

Concrete micropile

Indicated for soils with poor geomechanical properties, high corrosion or presence of rock.

Screw pile

Screw pile

Indicated for soils with a high content of vegetation and also for mixed soils with deep layers of rock and granular strata on the surface.

Concrete pad

Concrete pad

Indicated for landfill areas.

Technical specifications

General characteristics
Type of structureMonopost modular fixed structure (F3)
Estimated surface area per 1 MWp1.5-2 ha (depending on the tilt angle)
Dimensions (standard structure)
LengthDepending on the configuration. Modular structure.
WidthUp to 4 m
Height2.5 m approx
Distance of panel from ground>0.5 m
TiltAdaptable to the angle (5°-30°)
Structural analysis
Applicable regulationsEurocode or Asce. Adaptable to local regulations: EC, ASCE, CFE, NCH, AS/NZS, SANS
Mechanical specifications
Max wind speed (in horizontal position)Standard 140 km/h
StructureHot-dip galvanized steel
Applicable regulationsSteel quality 8.8 or 10.9 Geomet G500B or Zinc Nickel treatment
Foundations
Direct pile drivingCohesive soils of medium-firm consistency and granular soils of  medium to dense consistency
Pile driving with pre-drillingVery firm or rocky soils with pre-drilling beforehand
MicropileLow bearing capacity or corrosive soils
Screw pileVery firm or rocky soils with pre-drilling beforehand
Concrete padDifficult soils, landfills
Maintenance
Maintenance periodMinimum
Warranty
Standard10-year structural warranty

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References