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Walkway for a sloping rooftop
| Details |
Inventors: Green, William J.; Semmerling, Ralph P.;
Assignee: USG Industries, Inc. (Chicago, IL)
Primary Examiner: Bell; J. Karl
Assistant Examiner:
Attorney, Agent or Firm: Didrick; Robert M., Kurlandsky; Samuel, Robinson; Robert R.
An adjustable, U-shaped support stand is disposed transversely between an expanded metal walkway and a roof so that the walkway may be made level although the roof slopes or may be inclined with respect to the roof. The support stand has a U-shaped base comprising a foot, a short leg and a long leg, each leg having spaced apart columns of holes. Connected to each leg are extensions having an oval slot and a hole spaced apart in accordance with the columns of holes on the legs. Alignment of the slots and holes in the extensions with the appropriate holes in the legs allows the extended legs to be of different heights with respect to each other and also allows one end of an extended leg to be higher than the opposite end. The expanded metal walkway may thus be levelled even though the roof slopes in both the lateral and longitudinal direction under the walkway. |
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DETAILED DESCRIPTION The subject matter claimed is: 1.
A rooftop walkway comprising a longitudinal, expanded metal plank disposed at an acute angle to the roof on which the walkway rests, and an adjustable, U-shaped support stand to which the plank is fastened transversely; the support stand comprising a base, a pair of divergent legs connected to the base, and an extension member connected to each leg; each leg having a plurality of holes arranged in at least two spaced apart columns, and each extension member having a web and an outwardly extending flange connected to the plank, the webs having a pair of slots spaced apart in correspondence with the columns, wherein the slots in the extension members are aligned with the holes in the legs so that the base of the support stand and the flanges of the extension members are in different planes.
2.
The walkway of claim 1 wherein the expanded metal plank is horizontally level and the roof slopes longitudinally with respect to the plank, the slots in one extension member being aligned with a pair of horizontally spaced apart holes in one leg which are in a lower plane than those in the other leg with which the slots in the other extension member are aligned.
3.
The walkway of claim 1 wherein the expanded metal plank is horizontally level and the roof slopes transversely with respect to the plank, the spaced apart slots in the extension members being aligned with columnar holes in the legs which are in different planes.
4.
The walkway of claim 1 wherein one leg of the support stand is shorter than the other.
Description:
This invention relates to the use of expanded metal gratings as elevated walkways on roofs and other structures which need to be protected from the pounding of foot traffic.
It relates particularly to such elevated walkways on sloping rooftops.
It also relates to sloping elevated walkways on rooftops, flat or otherwise.
Rooftops on commercial buildings, although appearing to be flat, usually have a built-in slope for drainage purposes
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