An alternative to sheet pile or stone construction of a pier is the use of prefabricated binwall units. The binwall units are erected offsite into dock sections of the exact height and width required. They are loaded onto a barge, transported to the job site and joined together as they are set in place with a crane. Once filled with stone, they create a quick and simple dock structure. For binwall materials supplies go to www.contech-cpi.com, then select products - binwalls.