“Debeljaca” WS RC Tank (700m3)

Construction

Reinforced Concrete WS Tank “Debeljaca” (V=700m3), a part of Water Supplying System of Bihac City, Bosnia & Herzegovina The new RC water reservoir constructed app. 100 m north of the old reservoir. The maximum operating water level is at a height of 293,00masl, the minimum water level is at a height of 288,50masl. In the first stage only one chamber of the reservoir with a volume of 700m³ will be constructed. The walls and the piping built in a manner that an extension in the future with further 700m³ is possible without any changing. Construction Period: 2009 / 2010

RC Tank - Construction Sequence

COMPACTION OF STRUCTURAL FILL PLATE LOAD TEST (AS PER DIN18134)

PREPARED SUB-GRADE LAND SLIDE ON WORK-PIT SIDE STOPPED BY GABIONS, PLASTIC SHEETING AGAINST RAIN

PVC DN100MM DRAINAGE PIPES SYSTEM INSTALLED WITHIN THE SUB-GRADE

BLINDING CONCRETE INSTALLATION CONCRETE CLASS C12/15, D=8.0CM

BLINDING CONCRETE (C12/15; 8CM) VALVE CHAMBER AND RESERVOIR BASE SLAB

REINFORCED CONCRETE BASE SLAB (C30/37; 40CM) CONCRETE (C12/15; 5CM) HYDRO-INSULATION (BITUVAL V4) COLD BITUMINOUS COATING (IBITOL) BLINDING CONCRETE (C12/15; 8CM)

VALVE CHAMBER BASE SLAB – C30/37 CONCRETE, D=30.0CM

PIPE-FITTINGS INSTALLATION IN PARTITION WALL INSTALLATION OF PIPE NOZZLES, HORIZONTAL PVC WATER-STOP

VALVE CHAMBER DRAIN PIPE, WALL KICKER HORIZONTAL PVC WATER-STOP

PARTITION WALL PIPE NOZZLES

PVC WATER STOP 30MM WIDTH ON HORIZONTAL CONSTRUCTION JOINT BETWEEN WALL KICKERS AND FUTURE WALLS. CONCRETE CLASS C30/37, D=40.0CM

VALVE CHAMBER FITTINGS INSTALLATION AND PROTECTION AGAINST DAMAGE. WALLS THICKNESS D=40.0CM

Reservoir Side Walls concrete installation

Wall’s construction joints with vertical PVC Water-stop

30mm

SLUMP TEST ON EACH DELIVERED MIX TRUCK FOR VERIFICATION OF WORKABILITY

AIR CONTENT TAKEN ON EACH DELIVERED MIX TRUCK

VALVE CHAMBER REINFORCEMENT & FORMWORKS VALVE CHAMBER OUTSIDE WALL C30/37, D=30.0CM

RESERVOIR INLET WALL CONCRETE INSTALLATION CONCRETE CLASS C30/37, D=40CM, H=5.54M

RESERVOIR PARTITION WALL REINFORCEMENT WORKS CONCRETE CLASS C30/37, D=40CM

RESERVOIR VALVE CHAMBER SIDE WALLS CONCRETE INSTALLATION CONCRETE CLASS C30/37, D=30CM

RESERVOIR PARTITION WALL FORMWORKS WALL THICKNESS D=40CM

RESERVOIR COLUMNS (3NR) CONCRETE INSTALLATION CIRCULAR COLUMNS 3NR; D=35CM, H=5.54M

VALVE CHAMBER SLAB FORMWORK TANK’S VALVE CHAMBER SLAB REINFORCEMENT WORKS, WATER CHAMBER ROOF SLAB FORMWORKS

VALVE CHAMBER UPPER WALLS, WATER CHAMBER ROOF SLAB REINFORCEMENT WORKS

ROOF SLAB REINFORCEMENT WORKS, VALVE CHAMBER WALLS FORMWORK

RESERVOIR ROOF SLAB C30/37, D=22CM WATER CHAMBER ROOF SLAB CONCRETE WORKS

WATER CHAMBER ROOF SLAB CONCRETE C30/37, D=22.0CM

VALVE CHAMBER ROOF SLAB CONCRETE

ROOF SLAB TIGHTNESS TESTING AS PER EN 1508 A.6-8.3.4, 8.4,4. NO LEAKAGES RECORDED

RESERVOIR (WATER CHAMBER) WATER-TIGHTNESS TESTING IN ACCORDANCE WITH EN1508

WATER-TIGHTNESS TESTING AS PER EN 1508 A.6-8.3.4, 8.4,4 SEEPAGE ON WALL’S OUTER SURFACE SELF-HEALED WITHIN 2 WEEKS PERIOD

Hydro & Thermal Insulation Works

Roof Slab Hydro/Thermal Insulation: - Trench rampart Protective membrane (Tefond) - Thermal Insulation (Fibran) - Hydro-insulation (Bituval V4) - Cold bituminous coating (Ibitol) - Reinforced Concrete Roof Slab (C30/37; 22cm)

Hydro & Thermal Insulation

Outside Walls Hydro/Thermal Insulation: Ventilation Steel Pipes DN200 Reinforced Concrete Wall (C30/37; 40cm) Cold bituminous coating (Ibitol) Hydro-insulation (Bituval V4) Thermal insulation (Fibran) Protective membrane (Tefond) Crushed Stone Aggregate

RESERVOIR INLET PRESSURE PIPELINE DI DN300 WATER CHAMBER PERFORATED INTAKE PIPE DN300

Final Status - Reservoir Entry

Old, abandoned reservoir visible behind the new

reservoir entry

Final Status – SCADA System

SUCTION PIPE DI DN300 WITH AUTOMATIC AIR VALVE FINAL STATUS – VALVE CHAMBER

ELECTRO MAGNETIC FLOW METER PROMAG 50W ACTUATOR