// CODE SNIPPET
1101.12.1 Primary Roof Drainage
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Roof areas of a
building shall be drained by roof drains or gutters. The
location and sizing of drains and gutters shall be coordinated
with the structural design and pitch of the roof.
Unless otherwise required by the Authority Having
Jurisdiction, roof drains, gutters, vertical conductors or
leaders, and horizontal storm drains for primary
drainage shall be sized based on a storm of 60 minutes
duration and 100 year return period. Refer to Table D
101.1 (in Appendix D) for 100 year, 60 minute storms
at various locations.
Related Code Sections
1101.12.1 Storm Drainage, Primary Roof Drainage
or
leaders, and horizontal storm drains for primary
drainage shall be sized based on a storm of 60 minutes
duration and 100 year return period. Refer ...
California Plumbing Code 2016 > 11 Storm Drainage > 1101.0 General > 1101.12 Roof Drainage > 1101.12.1 Primary Roof Drainage
1101.12.1 Storm Drainage, Primary Roof Drainage
or leaders,
and horizontal storm drains for primary drainage
shall be sized based on a storm of 60 minutes duration
and 100 year return period. Refer ...
California Plumbing Code 2019 > 11 Storm Drainage > 1101.0 General > 1101.12 Roof Drainage > 1101.12.1 Primary Roof Drainage
1101.12 Storm Drainage, Roof Drainage
drainage system shall be a
separate system of piping, independent of the
primary roof drainage system. The discharge
shall be above grade, in a location ...
1101.12.2.2.2 Storm Drainage, Combined System
The
secondary roof drains shall connect to the
vertical piping of the primary storm drainage
conductor downstream of the last horizontal
offset ...
California Plumbing Code 2016 > 11 Storm Drainage > 1101.0 General > 1101.12 Roof Drainage > 1101.12.2 Secondary Drainage > 1101.12.2.2 Secondary Roof Drain > 1101.12.2.2.2 Combined System
1101.12.2.2.2 Storm Drainage, Combined System
The secondary
roof drains shall connect to the vertical
piping of the primary storm drainage conductor
downstream of the last horizontal offset ...
California Plumbing Code 2019 > 11 Storm Drainage > 1101.0 General > 1101.12 Roof Drainage > 1101.12.2 Secondary Drainage > 1101.12.2.2 Secondary Roof Drain > 1101.12.2.2.2 Combined System