Numbers and Titles



Includessunken or driven load-bearing enclosures to protect excavation for foundations, promote substructure construction, and become part of permanent structure. casing and reinforcement.
See31 52 00 for cofferdams. 31 63 26 for drilled caissons. 35 53 00 for underwater construction.
31 64 13Box Caissons
31 64 16Excavated Caissons
31 64 19Floating Caissons
31 64 23Open Caissons
31 64 26Pneumatic Caissons
31 64 29Sheeted Caissons