A scupper door system includes a frame defining a passageway. A door is mounted within the frame at a pivot and is therein rotatable about the pivot within the passageway between a closed position, blocking the passageway, and an open position wherein the passageway is open to permit passage of wate
A scupper door system includes a frame defining a passageway. A door is mounted within the frame at a pivot and is therein rotatable about the pivot within the passageway between a closed position, blocking the passageway, and an open position wherein the passageway is open to permit passage of water therethrough. A latch mechanism is configured to retain the door in the closed position and is triggerable in response to a preset water condition at one side of the passage to release the door from the closed position and allow the door to rotate to the open position.
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1. A scupper door system, the system comprising: a scupper frame defining a passageway between an interior side and an exterior side of a parapet positioned on a roof;a door mounted within the frame at a pivot, wherein the door is rotatable about the pivot within the passageway between a closed posi
1. A scupper door system, the system comprising: a scupper frame defining a passageway between an interior side and an exterior side of a parapet positioned on a roof;a door mounted within the frame at a pivot, wherein the door is rotatable about the pivot within the passageway between a closed position and an open position, wherein in the closed position the passageway is blocked and in the open position the passageway is open to permit passage of water therethrough;a latch mechanism configured to retain the door in the closed position and triggerable by presence of a preset water condition at the interior side to release the door from the closed position and allow the door to rotate to the open position in a first direction; andwherein the scupper door system is configured to prevent the door from rotating to the open position in a second direction opposite of the first direction where the latch mechanism comprises a retention pin and a retention slot, wherein the retention pin is positioned to be received within the retention slot to retain the door in the closed position, and wherein in the presence of the preset water condition the retention pin is configured to be withdrawn from the retention slot to release the door. 2. The scupper door system of claim 1, wherein the preset water condition comprises a minimum level of water at the interior side. 3. The scupper door system of claim 2, wherein the pivot comprises a pivot pin received within a pivot slot, wherein the pivot slot comprises a vertically extending portion, and wherein the pivot pin is translatable within the vertically extending portion to allow the door to vertically translate to a raised position. 4. The scupper door system of claim 3, wherein the door is buoyant and configured to vertically translate to the raised position when the minimum level of water is present at the interior side, and wherein the vertical translation of the door to the raised position withdraws the retention pin from the retention slot. 5. The scupper door system of claim 2, wherein the latch mechanism comprises a float operatively coupled to one of the retention pin and retention slot, and wherein the float is positioned to be raised by water present at the interior side such that the retention pin is withdrawn from the retention slot when the minimum level of water is present. 6. The scupper door system of claim 5, wherein the float is positioned within a chamber defined in the door, and wherein the chamber includes a fluid port dimensioned to allow water present at the interior side to enter the chamber and raise the float. 7. The scupper door system of claim 1, wherein the latch mechanism comprises a blocker plate attached to the frame and a float associated with the door having a blocking surface, wherein the float is positioned such that blocking surface extends below a height of and contacts the blocker plate when the door is in the closed position to prevent the door from pivoting to the open position in the absence of the preset water condition. 8. The scupper door system of claim 7, wherein the preset water condition comprises a minimum level of water at the interior side, and wherein the float is positioned to be floatable by the minimum level of water at the interior side to relocate the blocking surface above the blocker plate to release the door. 9. The scupper door system of claim 8, wherein the door defines a chamber in which the float is positioned. 10. The scupper door system of claim 9, wherein the door defines one or more fluid ports extending through a face of the door between the interior side and the chamber. 11. The scupper door system of claim 1, wherein the latch mechanism comprises a blocker plate attached to the frame and a fluid modifiable blocker, the fluid modifiable blocker positioned to contact the blocker plate to prevent the door from rotating from the closed position when so positioned, wherein the fluid modifiable blocker is positioned within a chamber accessible by water comprising the preset water condition at the interior side, wherein when the fluid modifiable blocker is accessed by the water the fluid modifiable blocker at least partially dissolves to release the door. 12. The scupper door system of claim 11, wherein the preset water condition comprises a minimum water level at the interior side. 13. The scupper door system of claim 12, further comprising a rain guard positioned to prevent falling rain from accessing the fluid modifiable material. 14. The scupper door system of claim 1, wherein the passageway comprises a first passageway and a second passageway defined by the frame, wherein the second passageway is stacked above the first passageway. 15. The scupper door system of claim 14, wherein the door comprises a first door and a second door, wherein the first door is positioned in the first passageway and the second door is positioned in the second passageway. 16. The scupper door system of claim 14, wherein the door is positioned in the second passageway and the first passageway is open. 17. A method of draining a roof, the method comprising: locating a scupper frame within a parapet positioned on the roof, wherein the scupper frame defines a passageway between an interior side and an exterior side of the parapet, and wherein a door is positioned within the passageway at a pivot and rotatable between a closed position and an open position;retaining the door in a closed position in the absence of a preset minimum level of water at the interior side;opening the door to the open position in a first direction in response to a pressure exerted by the preset minimum level of water present at the interior side; andpreventing the door from opening to the open position in a second direction opposite of the first direction wherein the retaining the door in the closed position comprises extending a retention pin within a retention slot to retain the door in the closed position, and opening the door comprises using the pressure exerted by the preset minimum level of water to withdraw the retention pin from the retention slot. 18. The method of claim 17, wherein opening the door further comprises allowing the pressure exerted by the preset minimum level of water to rotate the door to the open position after the retention pin is withdrawn from the retention slot.
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