Design Features

Baseplate/Drilled Holes

Solar foundations are provided with either a baseplate or with drilled holes.  Baseplates provide a location to mount solar racking systems and are used for foundation installation.  Solar foundations without baseplates allow U-bolt racking systems to slide over the top of the foundations.  Installation tool is then attached to the drilled holes.

Foundation Pipe Shaft

Shaft Material: Steel round HSS per ASTM A500 Grade B, minimum yield 50 KSI.

Round Shaft (RS) Helical Product Ratings

Catalog Number	Torque Rating ft-lbs (Nm)	Ultimate Tension Strength *kip (kN)	Uplift/Compression Capacity Limit**kip (kN)
RS3500.300	13,000 (17 600)	120 (534)	91 (405)
RS4500.337	23,000 (31 200)	140 (623)	138 (614)
RS6625.280	40,000 (54 233)	200 (890)	200 (890)
RS8625.250	60,000 (81 349)	300 (1 334)	300 (1 334)

* Based on Mechanical Strength of Coupling
** Based on Torque Rating – Uplift/Compression Capacity Limit = Torque Rating x Kt
“Default” Kt for Type RS2875 Series = 9 ft-1 (30 m-1); for Type RS3500.300 = 7 ft-1 (23 m-1);
for Type RS4500.337 = 6 ft-1 (20 m-1);
for Type RS6225.280 = 4 ft-1 (13 m-1);
for Type RS8624.250 = 5 ft-1 (13 m-1);

Galvanized Coating

Finish: Hot dip galvanize per ASTM A123; coating Grade 85. Appearance per Section 6.4, except no rack marks.