IronRidge Ground Mount Diagonal Brace for 3" Pipe, 2.5" Square Tube, 87" – GM-DB3-TB01-M1
SKUGM-DB3-TB01-M1
This IronRidge diagonal brace (GM-DB3-TB01-M1) is a 2.5" square aluminum tube, 87.0" long. It runs at an angle between a north and a south pipe leg on an IronRidge Ground Mount built with 3" pipe.
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Product Overview
This IronRidge diagonal brace (GM-DB3-TB01-M1) is a 2.5" square aluminum tube, 87.0" long. It runs at an angle between a north and a south pipe leg on an IronRidge Ground Mount built with 3" pipe.
IronRidge Ground Mount combines XR100 or XR1000 rails with locally sourced 2" or 3" steel pipe or mechanical tubing. Vertical pipes (piers) are set in concrete or ground screws, and horizontal pipes run across their tops. A diagonal brace stiffens the legs. IronRidge calls it optional, for installations that require extra support.
This listing is the tube only. A complete brace also needs two sleeves (one on each leg) and one diagonal brace hardware kit, per IronRidge's cut sheet.
Best For
- 3" pipe ground mounts that need bracing: IronRidge's span tables mark some layouts as requiring diagonal bracing. Your engineered design decides.
- Checking your foundation type: IronRidge's manual says that in some cases cross bracing is required to provide extra support for piers. Your Design Assistant bill of materials or PE-stamped plans show whether your layout needs braces.
Key Features & Specifications
| Specification | Details |
|---|---|
| Product type | Diagonal brace tube for IronRidge Ground Mount (3" pipe) |
| Part number | GM-DB3-TB01-M1, "GM Diagonal Brace, 2.5” Square Tube, 87.0” LG (For 3” Pipe)" (IronRidge Parts Catalog) |
| Tube size | 2.5" square, 87.0" long (IronRidge cut sheet) |
| Material; finish (per IronRidge cut sheet) | Aluminum; mill |
| Pipe size | For 3" pipe (IronRidge catalog). Other length for 3" pipe: 105.0" (GM-DB3-TB02-M1). |
| Placement (per IronRidge) | Between one north and south pair of support legs (catalog); sleeves 2–3" above the ground on the north leg and 2–3" below the top cap on the south leg, 6" max (manual) |
| Torque (per IronRidge manual) | Brace bolts 40 ft-lbs; set screws 15 ft-lbs (1/2" socket) |
| Warranty (per IronRidge) | 25 years for products and 10 years for accessories and electrical junction boxes, from shipment. The 5-year finish warranty does not apply to mill aluminum, pre-plated steel or polymeric products. See IronRidge Limited Warranties and Disclaimer (Warranty.IronRidge.2025). |
| Source | IronRidge Parts Catalog, Version 3.66 (2026); IronRidge Diagonal Brace Cut Sheet v1.2; IronRidge Ground Mount Installation Manual, Version 4.9 (2026); IronRidge Ground Mount Configurations Tech Brief, Version 1.20; IronRidge Limited Warranties and Disclaimer (Warranty.IronRidge.2025) |
What You May Also Need
Usually required
- Two 3" sleeves: IronRidge lists GM-DB3-SLV01-M1 as the 3" diagonal brace sleeve. The 2" sleeve is for 2" pipe.
- Brace hardware: One GM-DB-HW01-M1 hardware kit per brace, per IronRidge's cut sheet.
May be required
- The rest of the 3" structure: 3" top caps and 3" bonded rail connectors. IronRidge says to install braces before the top caps.
Optional upgrades
- Other ground-mount parts: See ground mounts.
Check current manufacturer documentation before combining components, especially batteries, inverters, communications equipment and system-control hardware.
Important Considerations
- Choosing a length. IronRidge offers two brace lengths for 3" pipe. Its catalog and cut sheet do not say which to use, so follow your Design Assistant bill of materials or PE-stamped plans.
- Install order. IronRidge's manual says to install diagonal braces before the top caps.
- 3" pipe only. IronRidge lists this brace "For 3” Pipe".
- Pipe is not included. IronRidge Ground Mount uses installer-supplied 2" or 3" Schedule 40 steel pipe (ASTM A53 Grade B, galvanized) or approved galvanized mechanical tubing. See the pipe specifications in IronRidge's Ground Mount manual.
- Engineering and permits. IronRidge says actual structural capacities are defined by PE-stamped project plans. Use IronRidge's Design Assistant and certification letters, and check local codes and soil conditions.