Fixed Tilt Ground Mount Solar Racking
Fixed-tilt racking holds the PV table at a defined design angle without active sun tracking. Select the support arrangement, foundation interface, table geometry and structural members from the actual site, module, terrain and project-load requirements.
- Single / Dual Support
- Project-Defined Tilt
- Foundation-Specific Interface
- Terrain & Geotechnical Inputs
- Structural Load Path
A Fixed-Tilt Rack Is More Than a Preset Angle
The system transfers module dead load and environmental actions through module supports, beams or purlins, braces, posts and the approved foundation into the ground. The final configuration should come from the selected racking product and structural calculation.
- Define module model, orientation, modules per table, tilt and ground clearance.
- Coordinate table length, row spacing and support locations with terrain and site access.
- Use foundation and post interfaces documented for the selected system.
- Specify steel, aluminum, coatings and fasteners from model-level documentation rather than a category-wide material formula.
Single- and Dual-Support Layouts Are Product-Specific Designs
Both arrangements exist in current fixed-tilt products, but neither is automatically the best choice for a project.
Single-Support Table
Uses one primary support line or post arrangement under the table. Suitability depends on table geometry, member capacity, foundation interface, terrain and the selected product's structural limits.
Dual-Support Table
Uses two support lines or posts to carry the inclined table. It can suit different spans and table layouts, but foundation count and member sizing must be evaluated from the actual structural design.
Use Only Foundation Types Supported by the Selected Rack
Fixed-tilt portfolios can include pile-, screw-, helical-, concrete- or ballast-based systems, but compatibility is model-specific.
Driven Pile
Use where pile geometry, embedment, installation method and verified soil performance match the rack design.
Ground Screw / Helical
Confirm the exact screw or pile geometry, installation criteria and post connection; related screw foundations are not automatically interchangeable.
Concrete / Precast
Use where the racking product is engineered for a concrete footing, pier or precast interface.
Ballasted / Surface-Supported
Use only with a system specifically engineered for bearing pressure, sliding and overturning without the assumed subsurface foundation.
Define the Site, Module and Table Before Finalizing the BOM
Module & Table
Module dimensions, orientation, modules per table, clamp zones, tilt and ground clearance.
Terrain & Layout
Site slope, elevation changes, row spacing, grading limits, drainage, access and available land geometry.
Geotechnical & Foundation
Soil profile, groundwater, corrosion exposure and field-test data required by the selected foundation.
Structural Design Basis
Project location, governing standard and applicable wind, snow, seismic and other required design actions.
Verify the Complete Structure from Module to Foundation
Module Support
Rails or purlins and compatible clamps transfer module loads into the fixed-tilt table.
Beams, Braces & Posts
Primary members stabilize the table and transfer forces toward the foundation interface.
Foundation Connection
Post-to-pile, screw, helical or concrete connections must match the selected rack and foundation design.
Use Model-Level Data for the Final Fixed-Tilt System
| Support arrangement | Single- or dual-support layout only where documented for the selected product and module table. |
|---|---|
| Foundation compatibility | Foundation types and post interfaces explicitly supported by the selected racking system. |
| Array geometry | Module model, orientation, modules per table, fixed tilt, ground clearance and row arrangement. |
| Terrain envelope | Allowed slope, elevation tolerance and grading assumptions according to the selected system. |
| Materials & corrosion | Actual member materials, coatings and fasteners specified for the system and site exposure. |
| Structural verification | Member sizes, attachment spacing and foundation reactions based on project loads and engineering calculations. |
| Project outputs | Layout, structural drawings, foundation information, BOM and installation documentation within the agreed scope. |
Send the Site, Module and Foundation Information
Provide the project location, module data, preliminary layout, terrain and available geotechnical information. The support arrangement and foundation interface can then be reviewed against the selected fixed-tilt system.
- Project location and design criteria
- PV module datasheet and preliminary layout
- Terrain / topographic information
- Geotechnical or foundation data if available
- Preferred support or foundation concept, if already defined
Fixed-Tilt Ground Mount Questions
Can one fixed-tilt rack use every foundation type?
No. Foundation compatibility depends on the selected product, post interface, soil conditions and structural design.
How is the fixed tilt angle selected?
The design angle should be set from the project energy/layout strategy together with module geometry, row spacing, ground clearance and structural requirements.
What information is needed for a quotation?
Send the project location, module data/layout, terrain, structural design criteria and any available geotechnical or foundation information.