Rafter with internal drainage feature and sloped glazing system incorporating same

Patent · Tue Jul 21 04:00:00 EDT 1987

OSTI ID:6257668

Rockar, J A

This patent describes a sloped curtainwall system for a building or the like, comprising: at least one panel having an inner surface facing the building interior and an opposite outer surface with the outer surface having vertical and horizontal marginal edges and the inner surface having vertical and horizontal marginal edges; elongated rafters; purlins; means for interconnecting the rafters and purlins to provide a grid having at least one opening for receiving the panel; at least one of the rafters having: an enclosed chamber extending along its length; a first bearing and sealing means engaging outer vertical marginal edge is the panel; a second bearing and sealing means engaging inner vertical marginal edges of the panel; the first and second bearing and sealing means engaging the panel minimizes movement of moisture, air, dust and the like from the building exterior to the building interior around the vertical marginal edges of the panel; and the first and second bearing and sealing means defining a vertical pocket in fluid communication with the enclosed chamber and including a vertical condensation gutter for receiving and collecting moisture from the interior surface portion of the curtainwall system; at least one of the purlins having a horizontal pocket defined by means for engaging and outer horizontal marginal edge portions of the panel and at least one of the purlins having a horizontal condensation gutter for receiving and collecting moisture from the interior surface portions of the curtainwall system; means for providing fluid communication between the enclosed chamber and horizontal pocket of the at least one of the purlins to move moisture from the horizontal pocket to the enclosed chamber; and means for providing fluid communication between the horizontal and vertical condensation gutters, the fluid providing means located in close proximity to rafter-purlins crossing.

• Assignee: PPG Industries, Inc., Pittsburgh, PA
• Patent Number(s): US 4680905
• OSTI ID: 6257668
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320107* -- Energy Conservation
Consumption
& Utilization-- Building Systems-- (1987-)
AIR FLOW
BUILDINGS
CONDUCTOR DEVICES
CONNECTORS
CONTROL
COVERINGS
CURTAINS
DRAINAGE
DUSTS
ELECTRICAL EQUIPMENT
EQUIPMENT
FLUID FLOW
GAS FLOW
GLAZING
MECHANICAL STRUCTURES
MOISTURE
PANELS
PRESSURE CONTROL
SEALS
SUPPORTS
VAPOR CONDENSATION