Roof drains zurn plumbing products groupspecification drainage operation 1801 pittsburgh avenue erie pa 16502 phone 814 455 0921 fax.
Roof drains elevation view.
Zurn industries llc roof drains and accessories cad details the zurn industries llc cad details below are complete drawings that can easily be downloaded customized for your residential or commercial project and included in your cad library for future use.
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Given that a flat roof is never flat but is always sloped to drain the drain will be lower than the elevation of the perimeter of the roof.
Tier 1 and tier 2.
Roof drains for installation in these types of roofs should be equipped with a water dam watertight open top collar either internal or external of the dome with its flood level at the prescribed elevation above deck to serve as a dam to retain the desired amount of water on the roof.
In the figure hsc is the height of the bottom of the scupper above the top of the roof edge.
This is demonstrated in figure 2.
Download free high quality cad drawings blocks and details of roof drains organized by masterformat.
In the case of a building without a parapet this height would be zero.