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Report on Floating and Float-In Concrete Structures
Reported by ACI Committee 357
ACI 357.2R-10
This report addresses the practical experience and engineering considerations
for the design and construction of floating concrete structures.
Recommendations for design loads and design criteria are presented.
Design procedures and methods of analysis are discussed to better
acquaint the reader with the design considerations unique to floating
marine structures. Methods used to construct floating concrete structures
play a major role in the success of each application. Construction methods
and materials used for recent applications are presented to demonstrate
the importance of the construction process during the planning and design
of marine concrete structures. Important aspects of delivery, from the
construction site and installation at the deployment site, are presented. The
durability and serviceability of floating structures at remote sites are
important considerations to project planners and developers. Construction
execution, materials selection and inspection, maintenance, and repair
techniques are discussed. The materials, processes, quality control
measures, and inspections described in this document should be tested,
monitored, or performed as applicable only by individuals holding the
appropriate ACI Certifications or equivalent.
Keywords: abrasion; accidents; admixtures; aggregates; concrete construction;
concrete durability; detailing; dynamic loads; fatigue (materials); finite
element method; floating structures; inspection; installing; lightweight
concretes; limit design method; loads forces; maintenance moorings; permeability;
post-tensioning; precast concrete; prestressed concrete; prestressing
steels; quality control; reinforced concrete; reinforcing steels; repairs;
serviceability; ships, stability; structural design surveys; towing

Chapter 1—Introduction and scope, p. 2
1.1—Introduction
1.2—Scope
Chapter 2—Notation, definitions, and acronyms, p. 2
2.1—Notation
2.2—Definitions
2.3—Acronyms
Chapter 3—Applications, p. 3
3.1—Introduction
3.2—Historical background
3.3—Ships and barges
3.4—Industrial plantships
3.5—Floating piers and docks
3.6—Floating bridges
3.7—Immersed tunnels
3.8—Navigation structures
3.9—Summary
Chapter 4—Materials and durability, p. 13
4.1—Introduction
4.2—Testing and quality control
4.3—Structural marine concrete
4.4—Reinforcement and concrete cover
4.5—Special considerations
4.6—Summary