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Case study

Metro Manila Subway

Metro Manila Subway is an enormous infrastructure venture across a densely populated area capable of transporting 1.74Million passengers, easing congestion on roading. The 36km north-south network with 15 stations is expected to cost USD7billion.

What did we deliver?

The Geotechnical investigation project across the Northern sector consisted of hundreds of drillholes. Drilling results were variable with poor RQD across different soils and volcanic units. RDCL supplied Televiewer scanning (borehole imagery), which JICA engineers used to determine static water level, geological units, fractures and defects. Data was digitally saved in 3D log outputs, allowing engineers across the world to easily understand the geotechnical risks for the tunnelling.


RDCL dedicated a team to the project in Manila and permanently deployed Televiewer tooling to Philippines, growing the RDCL footprint for televiewer work across Asia Pacific. Our staff were locally based, deploying daily for several months and quickly scanning holes, while our New Zealand processing team downloaded data overnight and presented results the following day. Due to variable to poor drilling results, with questionable core recovery, RDCL de-risked the design scope, as supplied reassurance of geology and geotechnical properties.

Services and tools

Wireline Geophysics including; Acoustic and Optical Televiewers (ATV & OTV), Downhole Seismic

Metro Manila Subway
Manila, Philippines
Hawke’s Bay
Te Matau-a-Māui
+64 6 877 1652
8/308 Queen Street East,
Hastings, Hawke’s Bay,
New Zealand
Te Whanganui-a-Tara
+64 4 282 1564
Unit 2, 2 Raiha St, Elsdon,
Porirua 5022, Wellington,
New Zealand.
Tāmaki Makaurau
+64 21 884 190
Unit A3, 269a Mount Smart Rd, Onehunga, Auckland 1061, New Zealand.
+63 916 276 3133 (Admin)+63 917 184 5147 (Technical)
Unit 2106, Prestige Tower,
F. Ortigas Jr. Road, Ortigas Center, Pasig City 1605, Metro Manila, Philippines.