1.
A PRESENTATION ON
METRO
PROJECTS

2.
COMMON TERMINOLOGIES
 PLATFORM
 OHE & THIRD RAIL TRACTION
 PLATFORM SCREEN DOOR
 ISLAND STATION
 CONCOURSE
 DRY FIXING
 HONED GRANITE
 TACTILE TILES

3.
TACTILE TILES

4.
TYPES OF METRO
 ELEVATED
 UNDERGROUND
 ON GRADE

5.
ELEVATED METRO

6.
 FULL SPAN CASTING OF INDIVIDUAL LINES
 FULL SPAN CASTING OF BOTH LINES
 SEGMENTAL LAUNCHING
 I-GIRDER
 CAST IN SITU

7.
SPECIAL FEATURES
 PORTAL
 CANTILEVER PIERCAP

8.
VIADUCT PHOTOS

9.
VIADUCT PHOTOS

10.
VIADUCT PHOTOS

11.
VIADUCT PHOTOS

12.
VIADUCT PHOTOS

13.
VIADUCT PHOTOS

14.
VIADUCT PHOTOS

15.
VIADUCT PHOTOS

16.
VIADUCT PHOTOS

17.
VIADUCT PHOTOS

18.
VIADUCT PHOTOS

19.
VIADUCT PHOTOS

20.
VIADUCT PHOTOS

21.
VIADUCT PHOTOS

22.
LAUNCHING GIRDER

23.
LAUNCHING GIRDER

24.
LAUNCHING GIRDER

25.
LAUNCHING GIRDER

26.
LAUNCHING GIRDER

27.
SEGMENT ERECTION
(For 31 m Span Length : Segment 11 Nos.

28.
SEGMENT ERECTION

29.
SEGMENT ERECTION

30.
SEGMENT ERECTION

31.
SEGMENT ERECTION

32.
SEGMENT ERECTION

33.
SEGMENT ERECTION

34.
LAUNCHING PHOTOS

35.
LAUNCHING PHOTOS

36.
LAUNCHING PHOTOS

37.
ELEVATED STATION

38.
 EXTENDED PIERCAP
 SIDE PLATFORM STATION
 ISLAND PLATFORM STATION
 TROUGH VIADUCT STATION

39.
EXTENDED PIERCAP PHOTOS

40.
EXTENDED PIERCAP PHOTOS

41.
EXTENDED PIERCAP PHOTOS

42.
EXTENDED PIERCAP PHOTOS

43.
EXTENDED PIERCAP PHOTOS

44.
EXTENDED PIERCAP PHOTOS

45.
EXTENDED PIERCAP PHOTOS

46.
EXTENDED PIERCAP PHOTOS

47.
METHOD STATEMENT FOR
CHENNAI METRO

48.
FOUNDATION FOR VIADUCT
PEDESTAL
FOOTING

49.
PIER FOR VIADUCT
PIER
PEDESTAL
FOOTING

50.
PIERCAP FOR VIADUCT
PIERCAP
PIER
PEDESTAL
FOOTING

51.
VIADUCT
VIADUCT
PIERCAP
PIER
PEDESTAL
FOOTING

52.
PLATFORM – MEENABAKKAM STN
PLATFORM
VIADUCT
EXTENDED PIERCAP
PIERCAP
PIER
PEDESTAL
FOOTING

53.
FOOTINGS – MEENABAKKAM STN
PLATFORM
VIADUCT
EXTENDED PIERCAP
PIERCAP
PIER
FOOTINGS PEDESTAL
FOOTING

54.
COLUMN – MEENABAKKAM STN
VIADUCT
EXTENDED PIERCAP
COLUMN
PIERCAP
PEDESTAL PIER
FOOTING
FOOTINGS

55.
CONCOURSE SLAB – MEENABAKKAM STN
PLATFORM
VIADUCT
CONCOURSE SLAB
EXTENDED PIERCAP
PIERCAP
COLUMN
PEDESTAL PIER
FOOTINGS FOOTING

56.
PLATFORM SLAB – MEENABAKKAM STN
PLATFORM SLAB PLATFORM
EXTENDED PIERCAP
VIADUCT
CONCOURSE SLAB
PIERCAP
COLUMN
PEDESTAL PIER
FOOTINGS FOOTING

57.
MEENABAKKAM STATION
ROOF SHEETING
STEEL COLUMN
PLATFORM SLAB PLATFORM
EXTENDED PIERCAP
VIADUCT
CONCOURSE SLAB
PIERCAP
COLUMN
PEDESTAL PIER
FOOTINGS FOOTING

58.
EXCAVATION – CUT & COVER METHOD
20,000
GL GL
Soil Cover
Weathered Rock
11,000

59.
BASE SLAB – CUT & COVER METHOD
GL GL
11,000

60.
WALLS – CUT & COVER METHOD
GL GL
9218
5750

61.
TOP SLAB – CUT & COVER
GL GL
9218
6250

62.
BACK FILL – CUT & COVER
GL Ground Level GL
6250 9218

63.
UNDERGROUND METRO

64.
TUNNEL
 CUT & COVER
 BORED TUNNEL

65.
FEATURES
 TOP DOWN
 BOTTOM UP

66.
STATIONS
 CUT & COVER
 BOTTOM UP
 TOP DOWN
 CAVERN

67.
PHOTOS: CUT & COVER

68.
PHOTOS: CUT & COVER

69.
PHOTOS: CUT & COVER

70.
PHOTOS: CUT & COVER

71.
PHOTOS: CUT & COVER

72.
PHOTOS: CUT & COVER

73.
PHOTOS: CUT & COVER

74.
– TYP. FEATURES
 OPEN EXCAVATION
 SOLDIER PILES / LAGGING
 SHEET PILES
 SHOTCRETING & ROCKBOLTING
 DIAPHRAGM WALLS
 KING POST

75.
BASE SLAB

76.
BASE SLAB

77.
BASE SLAB TEMP. CONTROL

78.
GROUND ANCHORING

79.
GROUND ANCHORING

80.
KING POST DRIVING

81.
KING POST DRIVING

82.
SHOTCRETING & ROCKBOLTING

83.
SHOTCRETING & ROCKBOLTING

84.
STRUTTING

85.
SHEET PILING

86.
SHEET PILING / STRUTING

87.
SHEET PILING

88.
SHEET PILING - GROUND SUPPORT

89.
SHEET PILING WITH HYDRAULIC JACK

90.
SHEET PILING WITH VIBRO HAMMER

91.
– TYP. FEATURES
 CONSTRUCTION IN REVERSE ORDER
 DIAPHRAGM WALLS
 PLUNGE COLUMNS & BARRETTES
 LONG BOOM EXCAVATORS & SMALL
EXCAVATORS

92.
GRABBING FOR DIAPHRAGM WALL

93.
GRABBING FOR DIAPHRAGM WALL

94.
PLUNGE COLUMN EXCAVATION

95.
PLUNGE COLUMN EXCAVATION

96.
PLUNGE COLUMN EXCAVATION

97.
TOP DOWN LONG BOOM EXCAVATOR

98.
TOP DOWN LONG BOOM EXCAVATOR

99.
TOP DOWN LONG BOOM EXCAVATOR

100.
METHOD STATEMENT FOR
BOTTOM UP CONSTRUCTION

101.
TUNNEL
STAGE 1 – DIAPHRAGM WALL
Traffic on half
width of road
500 X 500 X 150 thk.
RCC Guide Wall
Approximately 20 - 25 metres
Diaphragm Wall (typ.)
1000 / 1200 mm thk.

102.
TUNNEL
STAGE 2 – DIAPHRAGM WALL
Traffic on half
width of road
500 X 500 X 150 thk.
RCC Guide Wall
Approximately 20 - 25 metres
Diaphragm Wall
1000 / 1200 mm

103.
TUNNEL
STAGE 3 – EXCAVATION & STRUTS FIXING
Approx. 5-6 metres
5-6 m wide deck for
Dumper movement
Struts
Waler Beams

104.
TUNNEL
STAGE 4 – EXCAVATION & LVL 1 SLAB
Approx. 8-9 metres
RCC Waler Beam
1 m wide
PCC Base for Slab
Cross Beam 2.5 m wide Grid Casting
@ 8.4 m c/c

105.
TUNNEL
STAGE 5 – EXCAVATION & LVL 2 SLAB
Approx. 13-15 metres
Partition Bottom Slab
Wall
PCC Base for Slab
Grid Casting

106.
TUNNEL
CUT & COVER TUNNEL BY BOTTOM UP METHOD
10300 - 21250 mm
Final Ground Level
2000
4000 - 10000 mm
Diaphragm Wall
1000 / 1200 mm
Backfilled Area
Cut & Cover Excavation
5200
Partition Wall
300 mm thk.
Embedment
approx. 5 - 7
Down Up
Line Line

107.
STATION
STAGE 1 – DIAPHRAGM WALL & BARRETTE
Diaphragm Walls
constructed as for
tunnels
Approximately 20 - 25 metres
Steel Column plunged
in the bore & filled with
sand @ 8.4 M C/C
4.5 X 1 m Barrette
Cast upto Bottom
Slab level @ 8.4 m c/c

108.
STATION
STAGE 2 – STRUTS FIXING & TOP SLAB
Approx
3-4m

109.
STATION
Approx. 8 - 10 metres STAGE 3 – CONCOURSE SLAB

110.
STATION
Approx. 16 metres STAGE 4 – PLATFORM SLAB

111.
STATION
STAGE 5 – CONCOURSE SLAB COMPLETE
Approx. 8 - 10 metres

112.
STATION
STAGE 6 – TOP SLAB COMPLETE

113.
STATION
STAGE 7 – BACK FILLING
Backfi l l
Concourse Concourse
Pl atform Pl atform
down l i ne up l i ne

114.
CHALLANGES
 GROUND WATER
 UTILITY HANDLING
 WATER LINES
 ELECTRICAL LINES
 TELECOMMUNICATION LINES
 SEWAGE LINES
 CITY DRAINS
 TRAFFIC MANAGEMENT
 PRODUCTION IN NIGHT
 THIRD PARTY MANAGEMENT

115.
11 KV LINE SUPPORT

116.
TRAFFIC DECKING

117.
TRAFFIC DECKING

118.
TRIAL TRENCHING

119.
TRIAL TRENCHING