~ Sheet pile dam has been installed. Sheet piling had coal tar epoxy paint for corrosion protection.
~ End bent piles also have coal tar paint.
~ There was some discussion on damage to corrosion protective coatings during pile driving.
~ The Bridge Maintenance Unit reported that any corrosion seen on piles is often located within the first few feet of the ground surface. Therefore, they recommended corrosion protection for the top few feet of end bent piles.
~ Corrosion protection measures suggested during discussion included a concrete filled Sonotube jacket around a section of pile nearest the ground line, and a short curtain wall in front of the end bent cap.
A/I ~ Structure Design will review and evaluate the above suggestions for corrosion protection.