jupiter reef club structural analysis of existing seawall
Jupiter Reef Club Replacement Seawall Conceptual Design Overview August 25, 2016
Prepared By:
Cutcher & Associates, Inc. Coastal Engineers
Seawall Replacement Design Criteria
Existing Seawall:
- Does not provide the structural stability to meet the environmental loads resulting from a significant storm event (1). - Existing geometry and age prevents cost effective further restoration efforts - Partial failure would be catastrophic - Loss of upland infrastructure likely, inability to permit future structure
(1)
JUPITER REEF CLUB STRUCTURAL ANALYSIS OF EXISTING SEAWALL, JULY, 2016
Replacement Seawall Conceptual Design Two Basic Approaches Steel Sheet Pile & Concrete Cap Cantilever & Restrained East of existing seawall – Difficult to permit, most expensive, construction challenges West of existing seawall – Easier to permit, not feasible
Reinforced Concrete Counterfort geometry – Easier to permit, difficult to construct, prohibits use of deck area Duplicate existing geometry – Permitable, most cost effective
Two Basic Approaches • Option 1A
• Option 1B • Option 1C • Option 2 • Option 3 • Option 4
Six Conceptual Designs
Option 1A - Offset Balanced Cantilever w/ steel sheet pile stem, east of existing seawall
Option 1B - Same as Option 1A but with thickened concrete section
Option 1C - Same as Option 1A but substitute FRP sheet pile, add micro piles
Option 2 – Cantilever steel sheet pile w/ concrete cap, east of existing seawall
Option 3 - Concrete counterfort w/ steel sheet pile stem, west of existing seawall
Option 4 - Cantilever steel sheet pile w/ concrete cap, west of existing seawall
Ease of Permitting • Least Difficult • Moderate Difficulty w/ Justified Rationale – Option 1C • Moderate Difficulty • Most Difficult
Constructability • Least Difficult
Option 1A Option 1B • Moderate Difficulty • Most Difficult
Construction Cost – Initial Estimate • Least Expensive
Option 1A: $1.75 Million
• More Expensive
• Most Expensive
Anticipated Construction Schedule
Considerations
Prepared By:
Cutcher & Associates, Inc. Coastal Engineers
Seawall Replacement Design Criteria
Existing Seawall:
- Does not provide the structural stability to meet the environmental loads resulting from a significant storm event (1). - Existing geometry and age prevents cost effective further restoration efforts - Partial failure would be catastrophic - Loss of upland infrastructure likely, inability to permit future structure
(1)
JUPITER REEF CLUB STRUCTURAL ANALYSIS OF EXISTING SEAWALL, JULY, 2016
Replacement Seawall Conceptual Design Two Basic Approaches Steel Sheet Pile & Concrete Cap Cantilever & Restrained East of existing seawall – Difficult to permit, most expensive, construction challenges West of existing seawall – Easier to permit, not feasible
Reinforced Concrete Counterfort geometry – Easier to permit, difficult to construct, prohibits use of deck area Duplicate existing geometry – Permitable, most cost effective
Two Basic Approaches • Option 1A
• Option 1B • Option 1C • Option 2 • Option 3 • Option 4
Six Conceptual Designs
Option 1A - Offset Balanced Cantilever w/ steel sheet pile stem, east of existing seawall
Option 1B - Same as Option 1A but with thickened concrete section
Option 1C - Same as Option 1A but substitute FRP sheet pile, add micro piles
Option 2 – Cantilever steel sheet pile w/ concrete cap, east of existing seawall
Option 3 - Concrete counterfort w/ steel sheet pile stem, west of existing seawall
Option 4 - Cantilever steel sheet pile w/ concrete cap, west of existing seawall
Ease of Permitting • Least Difficult • Moderate Difficulty w/ Justified Rationale – Option 1C • Moderate Difficulty • Most Difficult
Constructability • Least Difficult
Option 1A Option 1B • Moderate Difficulty • Most Difficult
Construction Cost – Initial Estimate • Least Expensive
Option 1A: $1.75 Million
• More Expensive
• Most Expensive
Anticipated Construction Schedule
Considerations
