CAP 123I:
Building (Standards
of Sanitary Fitments, Plumbing, Drainage Works and
Latrines) Regulations
PNAP 297:
Provision of Sanitary
Fitments in Offices, Shopping Arcades and Department
Stores, Places of
Public Entertainment and Cinemas (May 2005) [PDF]
PNAP 211:
Planning and Design
of Drainage Works [PDF]
Drainage Services
Department
(DSD), Hong Kong www.dsd.gov.hk