This assembly is designed to slide over the top of an I-beam, straddling its southern flange. The vertical position of the Strut Attachment on the I-beam determines the tilt angle of the array and therefore its position must be measured and marked on each of the vertical I-beams. The strut mounting tab must be pointing upward. Slip the Strut Attachment over the southern flange of the I-beam. Slide the strut attachment down the I-beam aligning the top edge of the strut attachment to the mark made in Step 3-A. For now, finger tighten the four sets of hardware.