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CONSTRUCTION SEQUENCE AND PROCEDURE OF HYDERABAD METRO RAIL Contributed By:K ABHINAV REDDYJNTUHCEH, INDIA

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1. SEGMENT CASTING2. CONSTRUCTION OF PIERS3. ERECTION OF LAUNCHING GIRDER4. ERECTION OF PRECASTED SEGMENTS6. POST TENSIONING5. GLUING AND TEMPORARY STRESSING OF VIADUCT SEGMENT7. SESMIC ARRESTER

S1-01S2-02S3-03S4-04S4-05S4-06S4-07S4-08S3-09S2-10S1-11 TYPICAL 31M SPAN CONSISTS

SEGMENT CASTING

SOFFIT

SIDE SHUTTERING

PLACING OF REINFORCEMENTTYPICAL GIG

HDPE SHEATHSDUCT PROFILING

SEGMENT WITH CENTRAL VOIDS

INNER ASSEMBLY

BULK HEAD PANEL

CONCRETING1. DONE BY BOOM PLACER2. FROM THE BASE DESHUTTERING1. MOULD IS DE SHUTTERED AFTER 24 HOURS

DESHUTTERED SEGMENT

CASTING BAY

STACKING YARD

CONSTRUCTION OF PIER1. OBTAINING THE STATUTORY PERMISSIONS2. TRAINING ON CWP

3. BARRICATION

4. EXCAVATION5. PLACING OF REINFORCEMENT

REBARS AFTER BENDING

ISOLATED FOUNDATION

6. SHUTTERING

7. CONCRETING8. DESHUTTERING

ERECTION OF LAUNCHING GIRDER1. TRANSPORTATION OF LG2. ASSEMBLING OF LG3. ERECTION OF SUPPORTS4. LIFTING AND PLACING OF LG5. ERECTION OF WINCH ASSEMBLY6. ERECTION OF SEGMENT TROLLEYS

FRONT SUPPORT

MIDDLE SUPPORT

1. SEGMENT ALIGNMENTGLUING AND TEMPORARY STRESSING OF VIADUCT SEGMENT2. GLUING3. TEMPORARY STRESSING

POST TENSIONING1. INSTALLATION OF POST TENSIONING STRANDS

MULTI STRAND JACKHYDRAULIC MORTER2. STRESSING PREPARATIONS

3. INSTALLATION OF BEARING PLATES AND WEDGES

6. LOCK OFF7. SLIPPAGE CHECKING8. CUTTING THE PROJECTED STRANDS9. FILLING THE DUCTS

4. INITIAL STRESSING FOR SLACK REMOVAL5. FINAL STRESSING OPERATION

SESMIC ARRESTER