RDS Dock Hardware 1-1/2" (1-7/8") Pipe Side Bracket When installing a "T" or "L" or "H" shaped dock, use the 1.5" Corner Bracket on each inside corner. Where water depths are over 6 feet you may want to add cross bracing to reduce dock sway. Recommended use is one set of legs every eight to ten feet of dock length. 3/8" or 1/2" stainless steel assembly bolts, nuts, and washers available for Pipe Leg Docks solid cast aluminum manufactured in the United States with USA alloys