
Solar carports · Semi-cantilever
LETO. One row of parking.
The LETO is the workhorse for single rows along a property line, a drive aisle, or the edge of a lot. Columns sit at the back of the stall, so the full stall depth stays clear and the canopy reaches over the parked car. Rows join end to end to shade any length of parking.
At a glance
LETO: l-shape, double column, single cantilever.
- System
- LETO
- Geometry
- L-shape, double column, single cantilever
- Covers
- One row of parking, two spaces (18 ft) per bay, repeatable side by side
- Steel
- 10 ga galvanized box steel, or HSS A36 (primed, galvanized, or hot-dip)
- Tilt
- 0°, 5°, or 10°
- Clearance
- 8 ft 6 in to 15 ft
- Foundations
- Caisson or spread footing, in-ground or on a parking structure
Best for
- Perimeter rows of surface lots
- Multifamily and workplace parking
- Dealership display and inventory rows
- Lots where the drive aisle must stay column-free


Specifications
Manufacturer-published values for both steel systems.
Project engineering is site-specific: wind exposure, seismic category, soil, and module selection set the final member sizes and footing design.
Galvanized box steel system
- Columns
- 10 gauge galvanized box steel
- Beams
- 10 gauge galvanized box steel
- Purlins
- Galvanized or plain steel, slide-in solar purlins
- Finish
- G90 galvanized, no painting required
- Tilt
- 0° or 10° (5° available)
- Connections
- Bolted, no field welding, no welding inspections
HSS structural steel system
- Columns
- HSS, ASTM A36 grade
- Beams
- HSS, ASTM A36 grade
- Purlins
- 16 gauge AISI cold-rolled G90 galvanized steel
- Finish
- Primed, hot-dip galvanized, or standard galvanized
- Tilt
- Fixed slope up to 10°
- Connections
- Bolted, direct-tension indicators
Common to both systems
- Wind
- Modular designs rated to 110 mph
- Code basis
- ASCE 7 wind and seismic loads, engineered per jurisdiction
- Clearance
- 8 ft 6 in to 15 ft under the beam
- Foundations
- Reinforced concrete caisson or spread footing, 2,500 psi minimum, all soil types
- Mounting
- In-ground lots or on parking structures
- Modules
- Compatible with any framed PV module
- Listing
- UL 2703 listed racking system
- Engineering
- Complete engineering resources and pre-stamped certified letters; designs available in all 50 states
- Warranty
- Manufacturer limited warranty on the structure, with a design life beyond 20 years
Gallery


