Tuvalu borrow pits
TUVALU - NZAID PROJECTS IPWEA WELLINGTON - TARANAKI BRANCH MEETING
20 FEBRUARY 2015
Simple civil engineering task
How to fill some holes, and how much will it cost?
TUVALU – 1000 KM NORTH OF FIJI
FUNAFUTI ATOLL
FUNAFUTI IN OCTOBER 1943.
Image sourced from Strategic Atolls by Peter McQuarrie. The original is a Marine Corps Photo, National Archives, Washington
FUNAFUTI TODAY
10 BORROW PITS
BORROW PITS
PIG PENS
BORROW PITS
CRAMPED LIVING CONDITIONS
BORROW PIT USED FOR LANDFILL
LANDFILL
WHY FILL THEM? • • • • • • •
Increased land area, access and versatility Environmental Improvement Improved Sanitation & Public Health Climate resilience Water & Food Security Other Development Opportunities Making things right
CHALLENGES • Detailed survey of BPs including houses & pigpens • Environmental and Social Impact Assessments • Assessing impacts of tides and sea-level rise •
• • • • • • • •
3.29 + 0.35 = 3.64m above sea-level at turn of century
Using ECI contract during design Bathymetry & jet-probing to confirm sand depths Sonar scanning to find UXO Specialist UXO risk analysis Repairs to houses Consultation with landowners and Government Safe implementation during filling process Remote location
COMPLETED REPORTS
WHAT HAPPENS TO PIGS?
LINING OF PITS
SAND LOCATION & VOLUMES
DEAD CORALS & EUTROPHICATION AREA
DREDGING & FILLING
CUTTER SUCTION DREDGE
DREDGING & FILLING
DREDGE LOCATIONS
SEA-LEVEL
FINISHED LEVELS
HOUSES & FOUNDATIONS
SAND SAMPLING
SAND SAMPLES Robert Smith, SPC & Sid Wade, Calibre
MAGNETIC SIGNALS
SUNKEN BARGE
UXO INVESTIGATION
UXO PRECAUTIONS
TYPICAL DESIGN - BP7
BP7 - DESIGN DETAIL (1)
BP7 - DESIGN DETAIL (2)
BP4 TEALAPAE
BP6 TEONE NORTH
BP7 TCS & TEONE
BP10 FAKAIFOU
FEEDBACK FROM LANDOWNERS
QUALITY CONSTRUCTION
QUALITY CONSTRUCTION
SITE MEETINGS CAN BE FUN
HIGH TIDES ARE SERIOUS
VARIABLE INTERNET CONNECTIONS
FUNAFUTI CBD
FISHERIES BUILDING
FISHERIES BUILDING • Part of 5 year fisheries strengthening • Build one new building to co-locate whole department • Design includes • • • • • •
Solar power Roof water supply Pumped sea outfall for sewage Accessibility Cyclone resistance Durability and low maintenance
SITE LOCATION
Site for building
SITE INSPECTION
THANK YOU [email protected]
20 FEBRUARY 2015
Simple civil engineering task
How to fill some holes, and how much will it cost?
TUVALU – 1000 KM NORTH OF FIJI
FUNAFUTI ATOLL
FUNAFUTI IN OCTOBER 1943.
Image sourced from Strategic Atolls by Peter McQuarrie. The original is a Marine Corps Photo, National Archives, Washington
FUNAFUTI TODAY
10 BORROW PITS
BORROW PITS
PIG PENS
BORROW PITS
CRAMPED LIVING CONDITIONS
BORROW PIT USED FOR LANDFILL
LANDFILL
WHY FILL THEM? • • • • • • •
Increased land area, access and versatility Environmental Improvement Improved Sanitation & Public Health Climate resilience Water & Food Security Other Development Opportunities Making things right
CHALLENGES • Detailed survey of BPs including houses & pigpens • Environmental and Social Impact Assessments • Assessing impacts of tides and sea-level rise •
• • • • • • • •
3.29 + 0.35 = 3.64m above sea-level at turn of century
Using ECI contract during design Bathymetry & jet-probing to confirm sand depths Sonar scanning to find UXO Specialist UXO risk analysis Repairs to houses Consultation with landowners and Government Safe implementation during filling process Remote location
COMPLETED REPORTS
WHAT HAPPENS TO PIGS?
LINING OF PITS
SAND LOCATION & VOLUMES
DEAD CORALS & EUTROPHICATION AREA
DREDGING & FILLING
CUTTER SUCTION DREDGE
DREDGING & FILLING
DREDGE LOCATIONS
SEA-LEVEL
FINISHED LEVELS
HOUSES & FOUNDATIONS
SAND SAMPLING
SAND SAMPLES Robert Smith, SPC & Sid Wade, Calibre
MAGNETIC SIGNALS
SUNKEN BARGE
UXO INVESTIGATION
UXO PRECAUTIONS
TYPICAL DESIGN - BP7
BP7 - DESIGN DETAIL (1)
BP7 - DESIGN DETAIL (2)
BP4 TEALAPAE
BP6 TEONE NORTH
BP7 TCS & TEONE
BP10 FAKAIFOU
FEEDBACK FROM LANDOWNERS
QUALITY CONSTRUCTION
QUALITY CONSTRUCTION
SITE MEETINGS CAN BE FUN
HIGH TIDES ARE SERIOUS
VARIABLE INTERNET CONNECTIONS
FUNAFUTI CBD
FISHERIES BUILDING
FISHERIES BUILDING • Part of 5 year fisheries strengthening • Build one new building to co-locate whole department • Design includes • • • • • •
Solar power Roof water supply Pumped sea outfall for sewage Accessibility Cyclone resistance Durability and low maintenance
SITE LOCATION
Site for building
SITE INSPECTION
THANK YOU [email protected]
