// CODE SNIPPET
1503.4.1 Secondary Drainage Required
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Secondary (emergency overflow) roof drains or scuppers shall be provided where the roof perimeter construction extends above the roof in such a manner that water will be entrapped if the primary drains allow buildup for any reason.
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1107.1 Storm Drainage, Secondary Drainage Required
unless a safer water depth loading, including the required hydraulic head to maintain required flow rate out of the overflow drainage system that has ...
NYC Plumbing Code 2008 > 11 Storm Drainage > 1107 Secondary (Emergency) Roof Drains > 1107.1 Secondary Drainage Required
1107.1 Storm Drainage, Secondary Drainage Required
unless a safer water depth loading, including the required hydraulic head to maintain required flow rate out of the overflow drainage system that has ...
NYC Plumbing Code 2014 > 11 Storm Drainage > 1107 Secondary (Emergency) Roof Drains > 1107.1 Secondary Drainage Required
1503.4.1 Roof Assemblies and Rooftop Structures, Secondary Drainage Required
Secondary (emergency overflow) roof drains or scuppers shall be provided where the roof perimeter construction extends above the roof ...
NYC Building Code 2014 > 15 Roof Assemblies and Rooftop Structures > 1503 Weather Protection > 1503.4 Roof Drainage > 1503.4.1 Secondary Drainage Required
1106.4 Storm Drainage, Vertical Walls
to the projected roof area for inclusion in calculating the required size of vertical conductors, leaders and horizontal storm drainage piping. Exception ...
NYC Plumbing Code 2014 > 11 Storm Drainage > 1106 Size of Conductors, Leaders and Storm Drains > 1106.4 Vertical Walls
1611.3 Structural Design, Controlled Drainage
Roofs equipped with hardware to control the rate of drainage shall be equipped with a secondary drainage system at a higher elevation that limits ...