Total Petroleum Systems of the Trias/Ghadames Province, Algeria, Tunisia, and Libya
Man Made River Project IV Phase - Ghadames Project - AJRT Regulating Tank 70.000m3
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Transcript of Man Made River Project IV Phase - Ghadames Project - AJRT Regulating Tank 70.000m3
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AJRT Regulating Tank 2x35.000m3 Areal View
Man Made River Project IV Phase - Ghadames Project
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Al Jewaibyah Regulating Tank 2x35.000m3 Construction
Reservoir schematic overview
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Sub-grade Verification Test
Standard Penetration Test (SPT)
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Regulating Tank Structural Fill
Structural Fill applied in layers over the sub-grade , level of achieved compaction determined over Field Density Test (FDT)
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Plate Load Test
Conducted over the final layer of structural fill.
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Regulating Tank - Structural Fill
Final layer of structural fill, compacted, leveled and ready for blinding concrete
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Regulating Tank Blinding Concrete
Blinding Concrete (Class C) Design: W=185kg/m3; Cement=300kg/m3; Agg=1.880kg/m3; Add=2.4kg/m3.
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AJRT Tank Bottom Slab
Formwork drawing - bottom slab plan
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Base Slab - Corrosion Protection
2mm thick PE Sheeting between Blinding Concrete and Base Slab concrete as corrosion protection
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Bottom Slab - Sections
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Compressible Material
Extruded Polystyrene Type I (ASTM C578) laid on the top of Blinding Concrete (Class C)
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Base Slab Reinforcement
Steel Reinforcing Works (ASTM A615):
-Ø>14mm GRADE 60, Yield Strength = 400MPa, deformed; -Ø=12mm GRADE 40, Yield Strength =280MPa, deformed; -Ø<12mm MILD Steel, Yield Strength =250MPa, round
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Base Slab Formwork
RMD Kvikform Base Slab shutter with visible black corrosion protection (PE sheet) for later overlapping to vertical surface of the Reservoir wall.
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Base Slab Formwork
RMD Kvikform, wall kicker 10cm height
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Batching Plant
New Batching Plant erected for supply of Regulating Tank concrete works
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Batching Plant
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Batching Plant & Cement Silos
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Batching Plant with Chiller, Silos,
Aggregate Separator
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Batching Plant Chiller
For regulation of concrete temperature in Saharan Desert climate. During the production, concrete temperature on delivery to the Site did not exceed 32°C although ambient temperature often reached 52°C.
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Batching Plant Controls
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Batching Plant
Automatic mixing & control
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Batching Plant Aggregate Separators
Sand blowing for decrease of fine materials
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Concrete Quality Control
Cylinder moulds for sampling of concrete
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Fresh Concrete Quality Control - Workability
Slump Test
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Fresh Concrete Quality Control –
Air Content
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Regulating Tank – Outlet Section Base
Slab Concrete
81nr of Base Slab modules (max width 15x15m). The sequential bay method of construction has been used with each consecutive bay having at least two adjacent free edges and not more than two adjacent edges continuous with previous bays
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Concrete Works
Trowell of the Base Slab concrete surface, over applied curing compound BASF Masterkure 106D; SIKA
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Base Slab Structural Concrete
Concrete Class A: (W=189kg/m3; C=386kg/m3; W/C=0.49 ; Agg=1.830kg/m3; Add=3,1kg/m3) Cement – Type II, ASTM C150; Additive BASF Lubricon L-200, BASF Melcret TB101 Type G
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Construction Joints – Water Stop
SCP Ltd - 25x8mm Dual Seal Swellable Water Stop
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Swellable Water Stop
SCP Ltd - 25x8mm Dual Seal Swellable Water Stop
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Walls – Work Plan
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Regulating Tank Walls Formwork
RMD Kwikform Shuttering System
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Regulating Tank Walls Formwork
In total 55nr of Wall-segments installed with concrete, max modular wall-length = 15m’, height = 6.06m; width = 0.45m
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Regulating Tank Walls Formwork
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Regulating Tank Walls Concrete Installation
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Construction Joint Base Slab / Walls /
Walls
SCP Ltd - 25x8mm Dual Seal Swellable Water Stop between each of 55nr modular wall-segments
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Construction Joint Base Slab / Walls
SCP Ltd - 25x8mm Dual Seal Swellable Water Stop
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Walls, Columns & Roof Slab - Sections
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Columns Formwork
RMD Kwikform, Columns Ø400mm
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Columns Formwork
RMD Kwikform Column-kickers
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Regulating Tank Columns (500nr)
500nr Columns Ø400mm Concrete Class A (W=189kg/m3; C=386kg/m3; W/C=0.49 ; Agg=1830kg/m3; Add=3.1kg/m3)
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Regulating Tank – Roof Slab Formwork
RMD Kwikform Scafffolding
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Roof Slab - Sections
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Regulating Tank – Roof Slab Formwork
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Regulating Tank Partition Overflow
Wall
Partition Overflow Wall dividing Regulating Tank onto 2 separate Water Chambers (2x35.000m3)
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Roof Slab Reinforcement Works
Access Manhole openings– DN600
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Roof Slab Reinforcement Works
81nr of Roof Slab modules (max width 15x15m), with 25x8mm Dual Seal Swellable Water Stop in construction joint between each slab
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Roof Slab Concrete Installation
Roof Slab d=300mm; Concrete Class A (W=189kg/m3; C=386kg/m3; W/C=0.49 ; Agg=1830kg/m3; Add=3.1kg/m3) Cement – Type II, ASTM C150; Additive BASF Lubricon L-200, BASF MELCRET TB101 Type G
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Regulating Tank View during construction
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Roof Slab
Survey verification of Roof Slab plywood formwork (behind visible tower-crane and concrete pouring of columns)
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Regulating Tank Roof Slab
Reservoir height bottom to roof slab -6,06m, 500nr columns, 81nr base slab, 81nr roof slab modules (max width 15x15m), with 25x8mm Dual Seal Swellable Water Stop in construction joint between each slab
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Regulating Tank Roof Slab
The sequential bay method of construction has been used with each consecutive bay having at least two adjacent free edges and not more than two adjacent edges continuous with previous bays
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Regulating Tank Access Manhole
Sealing of Tie-rod holes, finishing works remaining
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Outlet Shafts & Overflow
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Outlet Shafts & Overflow
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Regulating Tank Overflow Pipe
Penetration
Overflow Steel DN1600mm Pipe Nozzle (25x8mm Dual Seal Swellable Water Stop & elastic sealing 2x1.5cm)
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Regulating Tank – Overflow Pipe Wall
Closure of Wall Shutter
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Regulating Tank Overflow Pipe
Shutter gaps sealing, centering of the Steel DN1600 Pipe elevation
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Regulating Tank Outlet Shaft 1
Outlet Shaft with Steel DN1400mm Pipe
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Regulating Tank Outlet Shaft 2
Reinforcement Works on Outlet Shaft 2 with Steel DN1400mm Pipe
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Outlet Shaft 1
Formworks
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Outlet Shaft 1
Concrete Installation
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Outlet Shaft 1
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Inlet & Drain Shaft
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Inlet & Drain Shaft
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Inlet Section – Integrated Surge Shaft
Regulating Tank Partition Wall visible at the back
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Regulating Tank Inlet & Surge Shaft
Inlet Pipes Steel DN1200mm
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Inlet & Tank Integrated Surge Shaft
Steel DN1200 Pipes
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Inlet Surge Shaft with Inlet DN1200 pressure
pipes
Wall’s reinforcement works, pipe nozzles positioning and anchoring in progress
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Surge Shaft Wall Formworks
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Surge Shaft
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Surge Shaft Corrosion Protection
All buried concrete surfaces in contact with soil are protected by Coal Tar Epoxy coating, average dry film thickness 150 microns to give overall dry film thickness of 450microns. Underside of bottom slab protected by 2 PE sheets with friction coefficient <0.1
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Inlet Surge Shaft – Tank’s Base Slab gap
To be filled with Soil cement.
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Surge Shaft – Compressible Material
Corrosion Protection: AmerCoat 78 HBB Resin Black + Cure (1:4); DoeCote 1080H + DoeClean 1080 (1:4)
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Surge Shaft – Compressible Material
Corrosion Protection: -Compressible material – Polystyrene 5cm -- 3nr layers of Coal tar Epoxy (min 450 microns)
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Inlet Surge Shaft Soil Cement filling
Soil Cement Mix Design: W=300kg/m3; Cement = 140kg/m3 (5% of Soil mass); W/C=2.1; Agg=1760kg/m3; Add=0.44kg/m3
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Tank’s Integrated Surge Shaft – Soil
Cement filling
Slump = 5 - 15cm; Minimal 7-days strength = 0.7MPa
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Integrated Surge Shaft, Partition Wall between
Water Chambers
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Regulating Tank Inlet side overview
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Regulating Tank Overview during
construction
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Regulating Tank Drain Shaft – Reservoir
Sump
Base Slab reinforcement works, Drain Steel Pipe DN250mm, Sump (750x750x300mm)
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Drain Steel Pipe DN250mm Wall
Penetration
Pipe nozzle wall penetration, swellable water stop, elastic sealant for prevention of water leakage.
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Regulating Tank Drain Shaft – Tank’s Sump
Internal Expansion Joint with Water Stop between Reservoir Sump and Drain Shaft
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Regulating Tank Drain Shaft – Tank’s Sump
Internal Expansion Water-Stop (400mm) left for connection with Drain Shaft
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Regulating Tank view during
construction works
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Regulating Tank view during construction
Supporting Tower Crane, Batching Plant Silos visible on the right side
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Inlet Overflow Weir Wall
Height of Weir (Overflow Wall) top 50cm lower than Roof Slab bottom
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Regulating Tank Corner Walls
The sequential bay method of construction has been used with each consecutive bay having at least two adjacent free edges and not more than two adjacent edges continuous with previous bays
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Regulating Tank View
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Regulating Tank Outlet Section View
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Details
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Details
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Regulating Tank Roof Slab
Maintenance Opening 3x3m
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Regulating Tank Roof Slab
Maintenance Opening 3x3m
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Regulating Tank Roof Slab Maintenance
Opening 3x3m
View from inside of the tank
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Regulating Tank Roof Slab Works
Inlet Overflow Weir Wall visible on left side
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Regulating Tank Outlet Shaft 2
Assembling of Steel Pipes DN1400
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Regulating Tank Outlet Shaft 2
Welding of DN1400 Steel Pipes in protected environment. Reservoir Overflow DN1600 Steel Pipe visible on upper left side
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Regulating Tank Outlet Section
Outlet DN1400 Steel Pipes aligned and welded. Reservoir Overflow DN1600 Steel Pipe visible on upper left side
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Regulating Tank Outlet Piping DN1400
View towards downstream Pump Station
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Regulating Tank Outlet Pipe – towards Pump
Station
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Regulating Tank Outlet View
Steel DN1400 Pipes, Outlet Shafts Walls Reinforcement works visible
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Regulating Tank Inlet Section Shafts
Transition from DN1600 PCCP (Pre-stressed Concrete Cylinder Pipes) to DN1200 Steel Pipes
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Regulating Tank View
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Regulating Tank Outlet with Overflow
Discharge
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Regulating Tank Outlet with Overflow
Discharge
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Regulating Tank Outlet with Overflow
Discharge
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Overflow Discharge
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Regulating Tank – on First Water
First Water on 4th November 2009
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Regulating Tank – on First Water
First Water on 4th November 2009
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Regulating Tank – on First Water
First Water on 4th November 2009
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Regulating Tank on First Water
First Water on 4th November 2009