Abstract: A frame supporting the dome of a skylight is formed with conduits along the outer peripheral edges of the flange at the base of the dome, receptive of water runoff from the dome. The conduits are formed with openings for conducting the water to the outside of the curb on which the frame is mounted. When, due to heavy precipitation, or for other reason, some of the runoff water passes under the lower surface of the flange of the dome, it passes over the inner lip of frame members on which the flange rests and into a second conduit below the first which conducts this portion of the runoff also to the outside of the curb and away from the opening within the curb over which the skylight is positioned.

Abstract: An explosion vent comprises a symmetrical convex dome disposed over a building roof or wall vent opening. A pair of symmetrically arranged safety braces are disposed over the dome. A pin is disposed in each brace end and inserted in an enlarged opening or guide in a curb assembly which supports the dome on the building adjacent the vent opening. The pins and pin receiving openings or guides are arranged to disengage only when a predetermined pressure differential (an explosion) "pops out" the dome and braces in a predetermined direction determined by the parallel axes of the pins.