Bulkhead Wharf Retrofit

Measure related to shoreline stabilization opportunities to address seismic risk

Looking for more? Head back to the Measures Explorer to check out other flood and seismic measures.


Working at low tide to strengthen wharf decks and piers © SGH
DESCRIPTION:
Retrofit of an existing wharf structure. This would improve its performance when subjected to seismic-induced ground shaking and ground displacements.



TARGETED MEASURE:
TYPE: Structural

SHORELINE LOCATION:
Nearshore





DESIGN LIFE:

ADAPTABILITY:

IMPACT ON THE WATERFRONT:

CONSTRUCTION COST:
30 Years

Low

Minor Waterside Intervention

Low to High




SEISMIC HAZARDS MITIGATED:
SEISMIC PERFORMANCE IMPROVED:





Lateral Spreading
Liquefaction

StructuresUtilities & Transportation




MEASURES COMPATIBILITY:
Flood
Seismic
Building Adaptations

Raised Marine Structures

Shoreline Stabilization




CONSIDERATIONS:

ADVANTAGES:

DISADVANTAGES:





  • Retrofit work may include strengthening the existing structure and/or adding new structural elements.
  • Extent of work will vary by structure and by the reduction of ground displacement achieved by shoreline stabilization measures.

  • Likely minimal construction impact to the Embarcadero and promenade and to the occupants of the pier being retrofitted.
  • Increases seismic performance of existing structure.

  • Not likely to extend the life of already deteriorated wharf structures.




CONSTRUCTION IMPACTS TO THE PUBLIC:

SEA LEVEL RISE ADAPTATION OPPORTUNITIES:



  • Likely minimal construction impact to the Embarcadero and promenade and to the occupants of the pier being retrofitted.

  • A retrofitted wharf may be necessary to accommodate an elevated waterfront building or raised marine structure, but is unlikely to meet performance requirements in areas with high seawall instability.




DESIGN CONSIDERATIONS:

  • Retrofit work would include strengthening the existing structure and/or adding new structural elements such as piles.
  • Type and extent of retrofit would vary by structure and by the reduction of ground displacements achieved by shoreline stabilization measures.


SITE-SPECIFIC CONSIDERATIONS:

  • Type and extent of retrofit will vary by structure and by the reduction of ground displacement achieved by shoreline stabilization measures.


URBAN DESIGN CONSIDERATIONS:

  • This measure does not present any urban design opportunities or considerations.


HISTORICAL RESOURCE CONSIDERATIONS:

  • This measure would likely not impact any historical buildings


INSTALLATION AND CONSTRUCTABILITY CONSIDERATIONS:

  • Strengthening of the existing structure would be accomplished by working off of temporary platforms during low tide.



OTHER TYPES OF SEISMIC MEASURES:
Click the images and links below to explore other types of seismic measures.


Shoreline Stabilization
Nearshore Buttress
Landside Buttress
Drilled Shafts
Super Bulkhead Wharf




Targeted



Liquefaction Mitigation





Head back to the Measures Explorer to check out other flood measures.


Measure related to shoreline stabilization opportunities to address seismic risk

Looking for more? Head back to the Measures Explorer to check out other flood and seismic measures.


Working at low tide to strengthen wharf decks and piers © SGH
DESCRIPTION:
Retrofit of an existing wharf structure. This would improve its performance when subjected to seismic-induced ground shaking and ground displacements.



TARGETED MEASURE:
TYPE: Structural

SHORELINE LOCATION:
Nearshore





DESIGN LIFE:

ADAPTABILITY:

IMPACT ON THE WATERFRONT:

CONSTRUCTION COST:
30 Years

Low

Minor Waterside Intervention

Low to High




SEISMIC HAZARDS MITIGATED:
SEISMIC PERFORMANCE IMPROVED:





Lateral Spreading
Liquefaction

StructuresUtilities & Transportation




MEASURES COMPATIBILITY:
Flood
Seismic
Building Adaptations

Raised Marine Structures

Shoreline Stabilization




CONSIDERATIONS:

ADVANTAGES:

DISADVANTAGES:





  • Retrofit work may include strengthening the existing structure and/or adding new structural elements.
  • Extent of work will vary by structure and by the reduction of ground displacement achieved by shoreline stabilization measures.

  • Likely minimal construction impact to the Embarcadero and promenade and to the occupants of the pier being retrofitted.
  • Increases seismic performance of existing structure.

  • Not likely to extend the life of already deteriorated wharf structures.




CONSTRUCTION IMPACTS TO THE PUBLIC:

SEA LEVEL RISE ADAPTATION OPPORTUNITIES:



  • Likely minimal construction impact to the Embarcadero and promenade and to the occupants of the pier being retrofitted.

  • A retrofitted wharf may be necessary to accommodate an elevated waterfront building or raised marine structure, but is unlikely to meet performance requirements in areas with high seawall instability.




DESIGN CONSIDERATIONS:

  • Retrofit work would include strengthening the existing structure and/or adding new structural elements such as piles.
  • Type and extent of retrofit would vary by structure and by the reduction of ground displacements achieved by shoreline stabilization measures.


SITE-SPECIFIC CONSIDERATIONS:

  • Type and extent of retrofit will vary by structure and by the reduction of ground displacement achieved by shoreline stabilization measures.


URBAN DESIGN CONSIDERATIONS:

  • This measure does not present any urban design opportunities or considerations.


HISTORICAL RESOURCE CONSIDERATIONS:

  • This measure would likely not impact any historical buildings


INSTALLATION AND CONSTRUCTABILITY CONSIDERATIONS:

  • Strengthening of the existing structure would be accomplished by working off of temporary platforms during low tide.



OTHER TYPES OF SEISMIC MEASURES:
Click the images and links below to explore other types of seismic measures.


Shoreline Stabilization
Nearshore Buttress
Landside Buttress
Drilled Shafts
Super Bulkhead Wharf




Targeted



Liquefaction Mitigation





Head back to the Measures Explorer to check out other flood measures.


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