Sand Bags

Measure under the Deployable measures related to physical infrastructure opportunities to address flood risk

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


Sand bags line on street protected from floodwaters - Bangkok, Thailand ©Shinji Makoto/Alamy Stock Photo
DESCRIPTION:
Sandbags can be used alone and to supplement other flood protection systems. When used alone, are stacked to provide a barrier to floodwater and are most effective with polyethylene sheeting. Properly filled and placed sandbags can act as a barrier to divert water. They do not guarantee a water-tight seal but are satisfactory in many situations.



PHYSICAL INFRASTRUCTURE:
SHORELINE LOCATION:
Asset Specific




DESIGN LIFE:
ADAPTABILITY:
IMPACT ON THE WATERFRONT:
CONSTRUCTION COST:
One-time Use
Low
Living with Water
Low




COASTAL FLOOD HAZARDS MITIGATED:





Sea Level Rise
Storm Surge
Groundwater
Waves
Erosion




MEASURES COMPATIBILITY:
ECOSYSTEM SERVICES: Measure may affect these shoreline values
Flood
Seismic
All
All
Aquatic Habitat
Terrestrial Habitat
Water Quality
Carbon Storage



CONSIDERATIONS:

ADVANTAGES:

DISADVANTAGES:





  • Requires event-specific deployment.
  • Does not provide long-term sea level rise protection.

  • Inexpensive and low-tech (easy to employ).

  • Provide limited level of protection, up to 2’ of flooding.
  • Can be time-consuming and labor intensive to fill, carry, and stack sandbags.
  • Not useful as a standalone measure for anything but small volume flows.
  • Can disrupt overland flow to Bay at certain locations.



CONSTRUCTION IMPACTS TO THE PUBLIC:

SEA LEVEL RISE ADAPTATION OPPORTUNITIES:

CASE STUDIES:





  • Temporary impacts during deployment and clean-up operations

  • Not adaptable

  • Although used around the world to protect against flooding, no particular case studies are selected



DESIGN OPPORTUNITIES:





Ecological Enhancements

Urban Design

Form
  • N/A

  • N/A

N/A




DESIGN CONSIDERATIONS:

  • Sandbags can be used to fill gaps in a permanent system.
  • Untied sandbags are recommended for most situations in order to effectively fill; tied are only recommended for special situations when pre-filling or stockpiling may be required, or for specific purposes (holding objects in place or filling holes).


SITE-SPECIFIC CONSIDERATIONS:

  • Foundation conditions (i.e. to be placed on concrete, pavement or soft soils).


URBAN DESIGN CONSIDERATIONS:

  • Sandbags would impede pedestrian, cycling, and possibly automobile circulation.


INSTALLATION AND CONSTRUCTABILITY CONSIDERATIONS:

  • Need to be filled and installed prior to a flood event - if placed too late may not be effective.


ARCHITECTURAL CONSIDERATIONS:

  • No impact, due to intermittent deployment.


HISTORICAL RESOURCE CONSIDERATIONS:

  • No impact, due to intermittent deployment.


OPERATION AND MAINTENANCE CONSIDERATIONS:

  • Not a permanent measure so operationally intensive at time of deployment, but no continual maintenance.
  • Will require clean up following flood event.



Other Types of Deployables:

Click the image and link below to explore other types of Deployables.



Post and Panel



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


Measure under the Deployable measures related to physical infrastructure opportunities to address flood risk

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


Sand bags line on street protected from floodwaters - Bangkok, Thailand ©Shinji Makoto/Alamy Stock Photo
DESCRIPTION:
Sandbags can be used alone and to supplement other flood protection systems. When used alone, are stacked to provide a barrier to floodwater and are most effective with polyethylene sheeting. Properly filled and placed sandbags can act as a barrier to divert water. They do not guarantee a water-tight seal but are satisfactory in many situations.



PHYSICAL INFRASTRUCTURE:
SHORELINE LOCATION:
Asset Specific




DESIGN LIFE:
ADAPTABILITY:
IMPACT ON THE WATERFRONT:
CONSTRUCTION COST:
One-time Use
Low
Living with Water
Low




COASTAL FLOOD HAZARDS MITIGATED:





Sea Level Rise
Storm Surge
Groundwater
Waves
Erosion




MEASURES COMPATIBILITY:
ECOSYSTEM SERVICES: Measure may affect these shoreline values
Flood
Seismic
All
All
Aquatic Habitat
Terrestrial Habitat
Water Quality
Carbon Storage



CONSIDERATIONS:

ADVANTAGES:

DISADVANTAGES:





  • Requires event-specific deployment.
  • Does not provide long-term sea level rise protection.

  • Inexpensive and low-tech (easy to employ).

  • Provide limited level of protection, up to 2’ of flooding.
  • Can be time-consuming and labor intensive to fill, carry, and stack sandbags.
  • Not useful as a standalone measure for anything but small volume flows.
  • Can disrupt overland flow to Bay at certain locations.



CONSTRUCTION IMPACTS TO THE PUBLIC:

SEA LEVEL RISE ADAPTATION OPPORTUNITIES:

CASE STUDIES:





  • Temporary impacts during deployment and clean-up operations

  • Not adaptable

  • Although used around the world to protect against flooding, no particular case studies are selected



DESIGN OPPORTUNITIES:





Ecological Enhancements

Urban Design

Form
  • N/A

  • N/A

N/A




DESIGN CONSIDERATIONS:

  • Sandbags can be used to fill gaps in a permanent system.
  • Untied sandbags are recommended for most situations in order to effectively fill; tied are only recommended for special situations when pre-filling or stockpiling may be required, or for specific purposes (holding objects in place or filling holes).


SITE-SPECIFIC CONSIDERATIONS:

  • Foundation conditions (i.e. to be placed on concrete, pavement or soft soils).


URBAN DESIGN CONSIDERATIONS:

  • Sandbags would impede pedestrian, cycling, and possibly automobile circulation.


INSTALLATION AND CONSTRUCTABILITY CONSIDERATIONS:

  • Need to be filled and installed prior to a flood event - if placed too late may not be effective.


ARCHITECTURAL CONSIDERATIONS:

  • No impact, due to intermittent deployment.


HISTORICAL RESOURCE CONSIDERATIONS:

  • No impact, due to intermittent deployment.


OPERATION AND MAINTENANCE CONSIDERATIONS:

  • Not a permanent measure so operationally intensive at time of deployment, but no continual maintenance.
  • Will require clean up following flood event.



Other Types of Deployables:

Click the image and link below to explore other types of Deployables.



Post and Panel



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


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