No_5_November_and_December__1939 — Page 7

AMSTER

0000

Hong Kong Builder

15

BQULLA

B

蹴

Plan of general arrangement at operating floor levels, and Reserve Tank floor.

proved quite satisfactory. Filtration from below was a difficulty which was overcome by pumping but a more serious question arose when concreting inside the caisson

after the required depth had been attained, as the pumps carried away the fine cement with the water. The pro- blem was solved by resting four piling tubes of large