Nyc Roof Drains For Set Back Roof

My complaint is that a tech that will take the time to use tie offs and fall arrest is the type of person that won t ever fall off a roof.

Nyc roof drains for set back roof.

Strainers shall have an available inlet area above roof level of not less than one and one half times the area of the conductor or leader to which the drain is connected. The clamping collar secures the membrane at each drain to ensure a water tight seal. The distinguishing feature of a siphonic roof drain is the air baffle. Big money for these systems i m seeing 200 300 000 bills to add.

The published roof drain flow rate based on the head of water above the roof drain shall be used to size the storm drainage system in accordance with section 1106. The flow rate used for sizing the storm drainage piping shall be based on the maximum anticipated ponding at the roof drain. Hasn t been made retroactive yet. The roof drain is usually set in the deck and the membrane is stretched over the entire roof.

The membrane is cut out at each drain and is secured by the drains clamping collar. An extensive green roof system installed atop the nyc department of parks and recreation s dpr five borough building on randall s island. Epdm roofs are water proof and tend to be expensive. Roof drains zurn plumbing products groupspecification drainage operation 1801 pittsburgh avenue erie pa 16502 phone 814 455 0921 fax.

A siphonic roof drain looks much like a traditional roof drain. Roof drains from zurn include combination primary overflow control flow dual outlet siphonic retrofit and more which cater from educational to commercial needs. To see availability for this product personlog in or get online access. No hub cast iron high volume roof drain with ductile iron dome.

1 24 of 279 results for roof drains page 1 of 12. This air baffle is engineered and tested to prevent air from entering the piping system at peak flows. Roof drains shall have strainers extending not less than 4 inches 102 mm above the surface of the roof immediately adjacent to the roof drain. It is important to remember that no roof area should ever have less than two roof drains.

Even on roofs without hvac equipment fall arrest is required for roof drain and roofing inspection. Other than the baffle a siphonic roof drain has the same features as a traditional roof drain including a.