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Al Jewaibyah Regulating Tank 70,000m3
- 2. AJRT RegulatingTank 2x35.000m3 ArealView Man Made River Project IV Phase - Ghadames Project
- 3. Al Jewaibyah Regulating Tank 2x35.000m3 Construction Reservoir schematic overview
- 5. RegulatingTank Structural Fill Structural Fill applied in layers over the sub-grade , level of achieved compaction determined over Field Density Test (FDT)
- 6. Plate LoadTest Conducted over the final layer of structural fill.
- 7. RegulatingTank - Structural Fill Final layer of structural fill, compacted, leveled and ready for blinding concrete
- 9. AJRT Tank Bottom Slab Formwork drawing - bottom slab plan
- 10. Base Slab - Corrosion Protection 2mm thick PE Sheeting between BlindingConcrete and Base Slab concrete as corrosion protection
- 11. Bottom Slab - Sections
- 12. Compressible Material Extruded PolystyreneType I (ASTMC578) laid on the top of Blinding Concrete (Class C)
- 13. Base Slab Reinforcement Steel ReinforcingWorks (ASTM A615): -Ø>14mmGRADE 60,Yield Strength = 400MPa, deformed; -Ø=12mmGRADE 40,Yield Strength =280MPa, deformed; -Ø<12mm MILD Steel,Yield Strength =250MPa, round
- 14. 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.
- 15. Base Slab Formwork RMD Kvikform, wall kicker 10cm height
- 16. Batching Plant New Batching Plant erected for supply of RegulatingTank concrete works
- 17. Batching Plant
- 18. Batching Plant & Cement Silos
- 19. Batching Plant with Chiller, Silos, Aggregate Separator
- 20. 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.
- 22. Batching Plant Automatic mixing & control
- 23. Batching Plant Aggregate Separators Sand blowing for decrease of fine materials
- 24. Concrete Quality Control Cylinder moulds for sampling of concrete
- 25. Fresh Concrete Quality Control -Workability SlumpTest
- 26. Fresh Concrete Quality Control – Air Content
- 27. RegulatingTank – Outlet Section Base SlabConcrete 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
- 28. ConcreteWorks Trowell of the Base Slab concrete surface, over applied curing compound BASF Masterkure 106D; SIKA
- 29. Base Slab Structural Concrete Concrete ClassA: (W=189kg/m3; C=386kg/m3; W/C=0.49 ; Agg=1.830kg/m3; Add=3,1kg/m3) Cement –Type II,ASTMC150; Additive BASF Lubricon L-200, BASF MelcretTB101Type G
- 30. Construction Joints – Water Stop SCP Ltd - 25x8mm Dual Seal SwellableWater Stop
- 31. SwellableWater Stop SCP Ltd - 25x8mm Dual Seal SwellableWater Stop
- 32. Walls –Work Plan
- 34. RegulatingTankWalls Formwork In total 55nr of Wall-segments installed with concrete, max modular wall-length = 15m’, height = 6.06m; width = 0.45m
- 37. Construction Joint Base Slab /Walls / Walls SCP Ltd - 25x8mm Dual Seal SwellableWater Stop between each of 55nr modular wall-segments
- 38. Construction Joint Base Slab /Walls SCP Ltd - 25x8mm Dual Seal SwellableWater Stop
- 39. Walls,Columns & Roof Slab - Sections
- 40. Columns Formwork RMD Kwikform, Columns Ø400mm
- 41. Columns Formwork RMD Kwikform Column-kickers
- 42. RegulatingTank Columns (500nr) 500nr Columns Ø400mm Concrete ClassA (W=189kg/m3; C=386kg/m3;W/C=0.49 ; Agg=1830kg/m3; Add=3.1kg/m3)
- 43. RegulatingTank – Roof Slab Formwork RMD Kwikform Scafffolding
- 44. Roof Slab - Sections
- 45. RegulatingTank – Roof Slab Formwork
- 46. RegulatingTank PartitionOverflow Wall PartitionOverflow Wall dividing RegulatingTank onto 2 separate Water Chambers (2x35.000m3)
- 47. Roof Slab ReinforcementWorks Access Manhole openings– DN600
- 48. Roof Slab ReinforcementWorks 81nr of Roof Slab modules (max width 15x15m), with 25x8mm DualSeal Swellable Water Stop in construction joint between each slab
- 49. Roof Slab Concrete Installation Roof Slab d=300mm; Concrete ClassA (W=189kg/m3; C=386kg/m3; W/C=0.49 ; Agg=1830kg/m3; Add=3.1kg/m3) Cement –Type II,ASTMC150; Additive BASF Lubricon L-200, BASF MELCRETTB101Type G
- 51. Roof Slab Survey verification of Roof Slab plywood formwork (behind visible tower-crane and concrete pouring of columns)
- 52. RegulatingTank 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
- 53. RegulatingTank 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
- 54. RegulatingTank Access Manhole Sealing ofTie-rod holes, finishing works remaining
- 57. RegulatingTank Overflow Pipe Penetration Overflow Steel DN1600mm Pipe Nozzle (25x8mm Dual Seal SwellableWater Stop & elastic sealing 2x1.5cm)
- 58. RegulatingTank – Overflow PipeWall Closure of Wall Shutter
- 59. RegulatingTank Overflow Pipe Shutter gaps sealing, centering of the Steel DN1600 Pipe elevation
- 60. RegulatingTankOutlet Shaft 1 Outlet Shaft with Steel DN1400mm Pipe
- 61. RegulatingTankOutlet Shaft 2 ReinforcementWorks on Outlet Shaft 2 with Steel DN1400mm Pipe
- 63. Outlet Shaft 1 Concrete Installation
- 64. Outlet Shaft 1
- 65. Inlet & Drain Shaft
- 66. Inlet & Drain Shaft
- 67. Inlet Section – Integrated Surge Shaft RegulatingTank PartitionWall visible at the back
- 68. RegulatingTank Inlet & Surge Shaft Inlet Pipes Steel DN1200mm
- 69. Inlet &Tank Integrated Surge Shaft Steel DN1200 Pipes
- 70. Inlet Surge Shaft with Inlet DN1200 pressure pipes Wall’s reinforcement works, pipe nozzles positioning and anchoring in progress
- 72. Surge Shaft
- 73. Surge Shaft Corrosion Protection All buried concrete surfaces in contact with soil are protected byCoalTar 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
- 74. Inlet Surge Shaft – Tank’s Base Slab gap To be filled with Soil cement.
- 75. Surge Shaft – Compressible Material Corrosion Protection: AmerCoat 78 HBB Resin Black + Cure (1:4); DoeCote 1080H + DoeClean 1080 (1:4)
- 76. Surge Shaft – Compressible Material Corrosion Protection: -Compressible material – Polystyrene 5cm -- 3nr layers of Coal tar Epoxy (min 450 microns)
- 77. 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
- 78. Tank’s Integrated Surge Shaft – Soil Cement filling Slump = 5 - 15cm; Minimal 7-days strength = 0.7MPa
- 79. Integrated Surge Shaft, PartitionWall between Water Chambers
- 82. RegulatingTank Drain Shaft – Reservoir Sump Base Slab reinforcement works, Drain Steel Pipe DN250mm, Sump (750x750x300mm)
- 83. Drain Steel Pipe DN250mmWall Penetration Pipe nozzle wall penetration, swellable water stop, elastic sealant for prevention of water leakage.
- 84. RegulatingTank Drain Shaft –Tank’s Sump Internal Expansion Joint with Water Stop between Reservoir Sump and Drain Shaft
- 85. RegulatingTank Drain Shaft –Tank’s Sump Internal ExpansionWater-Stop (400mm) left for connection with Drain Shaft
- 87. RegulatingTank view during construction SupportingTower Crane, Batching Plant Silos visible on the right side
- 88. Inlet OverflowWeir Wall Height of Weir (Overflow Wall) top 50cm lower than Roof Slab bottom
- 89. RegulatingTank CornerWalls 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
- 92. Details
- 93. Details
- 96. RegulatingTank Roof Slab Maintenance Opening 3x3m View from inside of the tank
- 97. RegulatingTank Roof SlabWorks InletOverflow WeirWall visible on left side
- 98. RegulatingTankOutlet Shaft 2 Assembling of Steel Pipes DN1400
- 99. RegulatingTankOutlet Shaft 2 Welding of DN1400 Steel Pipes in protected environment. Reservoir Overflow DN1600 Steel Pipe visible on upper left side
- 100. RegulatingTankOutlet Section Outlet DN1400 Steel Pipes aligned and welded. Reservoir Overflow DN1600 Steel Pipe visible on upper left side
- 101. RegulatingTankOutlet Piping DN1400 View towards downstream PumpStation
- 102. RegulatingTankOutlet Pipe – towards Pump Station
- 103. RegulatingTankOutlet View Steel DN1400 Pipes, Outlet ShaftsWalls Reinforcement works visible
- 104. RegulatingTank Inlet Section Shafts Transition from DN1600 PCCP (Pre-stressed Concrete Cylinder Pipes) to DN1200 Steel Pipes
- 105. RegulatingTankView
- 109. Overflow Discharge
- 110. RegulatingTank – on FirstWater FirstWater on 4th November 2009
- 111. RegulatingTank – on FirstWater FirstWater on 4th November 2009
- 112. RegulatingTank – on FirstWater FirstWater on 4th November 2009
- 113. RegulatingTank on FirstWater FirstWater on 4th November 2009