U.S. patent number 3,585,767 [Application Number 04/805,326] was granted by the patent office on 1971-06-22 for prefabricated room unit.
This patent grant is currently assigned to WRW-Produkter AB. Invention is credited to Ove Rosto, Torsten Gunner HERMAN Wilk.
United States Patent |
3,585,767 |
Wilk , et al. |
June 22, 1971 |
**Please see images for:
( Certificate of Correction ) ** |
PREFABRICATED ROOM UNIT
Abstract
A prefabricated room unit designed for use in constructing
modular buildings. The prefabricated room unit is formed of a
plurality of identical sheet metal panels of substantially U-shaped
cross section. The walls of the room are formed by disposing the
sheet metal panels side-by-side having their adjacent lateral
flanges joined. The floor of the room unit is formed of
substantially identical panels mounted in pairs with their web
portions in contact and secured to each other so that each
combination of two sheet metal panels forms an I-type beam.
Inventors: |
Wilk; Torsten Gunner HERMAN
(Lindingo, SW), Rosto; Ove (Farsia, both,
SW) |
Assignee: |
WRW-Produkter AB (Stockholm,
SW)
|
Family
ID: |
20261651 |
Appl.
No.: |
04/805,326 |
Filed: |
March 7, 1969 |
Foreign Application Priority Data
|
|
|
|
|
Mar 12, 1968 [SW] |
|
|
3226/68 |
|
Current U.S.
Class: |
52/79.1; 52/264;
D25/35 |
Current CPC
Class: |
E04B
1/34869 (20130101) |
Current International
Class: |
E04B
1/348 (20060101); E04b 001/348 (); E04b
005/10 () |
Field of
Search: |
;52/79,588,508,264,265 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Murtagh; John E.
Claims
What we claim is:
1. A light weight prefabricated room comprising wall means and
floor support means wherein,
said wall means comprising a plurality of walls, each of said walls
comprised of a plurality of identical elongated sheet metal
elements, substantially of U-shaped cross section, each of said
elongated sheet metal elements being disposed side by side with
their respective adjacent flanges joined,
said floor support means comprising a plurality of I-type beams,
each of said I-type beams comprising a pair of said identical
elongated sheet metal elements, said elongated sheet metal elements
comprising said I-type beams being joined at their respective web
portions,
a pair of U-rails for each of said walls, one said rail being
disposed adjacent to and enclosing the upper portion of said wall,
the other said rail adjacent to and enclosing the lower end of said
wall,
said lower rail of each said wall being disposed on and supported
by at least one of said I-type beams.
2. The room unit of claim 1 in which the elongated sheet metal
elements forming said walls have their longitudinal axes oriented
vertically, and said U-rails have their longitudinal axes disposed
horizontally.
3. The room unit of claim 2 in which the flanges of said elongated
sheet metal elements comprising said walls are directed outwardly
of said room.
4. The room of claim 3 in which the external surfaces thereof are
covered with gypsum boards.
5. The room of claim 1 in which said identical elongated sheet
metal elements comprising said walls are joined flange-to-flange by
spot-welding and said I-type beams comprising said floor support
means comprise a pair of said identical elongated sheet metal
elements joined web-to-web by spot-welding.
Description
The present invention relates to a prefabricated room unit,
especially a bathroom, the load-carrying structure of which
substantially consists of sheet metal. As is commonly known the
general advantage of prefabricated building elements is the
possibility of shortening the time of construction of a building.
On the other hand, the prefabricated units are expensive as such
and, moreover, the costs for their transport to the building site
is higher than for building material of conventional types. This is
due not only to the fact that, as a rule, prefabricated units are
bulky but is also to a considerable extent caused by the need of
expensive specially designed and equipped transport vehicles.
The main object of the present invention is to provide a
prefabricated room unit composed by standardized uniform elements
whereby it is comparatively cheap in manufacture.
Another object of the invention is to provide a prefabricated room
unit of very low weight so that it renders itself for economical
transport from the factory to the building site.
A room unit manufactured in accordance with the main characteristic
of the invention consists of similar, elongated sheet metal
elements of substantially U-shaped cross section. Those of the
elements which form the walls of the room unit are disposed side by
side having their adjacent lateral flanges joined, whereas the
elements forming the floor of the room unit are mounted in pairs
with their web portions in contact and secured to each other so
that they act as I-type beams.
An embodiment of the invention will now be described in greater
detail reference being made to the accompanying diagrammatic
drawing, showing in perspective view a bathroom designed in
accordance with the principles of the invention.
The room unit here illustrated is substantially composed of a
number of similar, elongated sheet metal elements substantially of
U-shaped cross section. However, the outermost portions of the
flanges of the U-shaped elements are folded inwardly into
parallelism with the web portions. The elements forming the floor
part of the room unit have their web portions vertical and are
joined pair-wise, the backs of the webs of the two elements in each
pair being in contact with and secured to each other whereby there
is formed a number of beams which may be considered I-beams but,
naturally, have their flanges folded as just described. Reference
numeral 1 designates one element and reference numeral 2 the other
element in a beam composed by a pair of sheet metal elements. It
has been found economical to join the two elements by spot-welding
and welding spots have been shown on the drawing.
The walls of the bathroom consist of similar, elongated sheet metal
elements. However, in the walls those elements are not arranged
with their web portions facing each other resulting in double
thickness. Instead, they are mounted side by side so that the main
portions of their lateral flanges, i.e. those portions which are
perpendicular to the webs, contact each other. Those flange
portions have been secured to each other by spot-welding resulting
in formation of stable wall panels which in turn by spot-welding
are secured to the floor. The spaces formed between the parallel
floor beams house sheets of an heat-insulating material 4. The
external sides of the vertical walls are covered by boards 5 and 6
consisting of gypsum or some other suitable material. AS appears
from the drawing the top ends of the wall panels are surrounded by
the depending flanges of a U-rail which gives lateral stability.
Although this has not been shown it is convenient to use the same
mounting principle between the floor part of the room unit and the
vertical walls in which case corresponding rails rare secured to
the floor part, preferably by welding. The ceiling 7 of the
bathroom may be constituted by a plywood board. The door 8 may have
an ordinary wooden frame. Numerals units 10 and 11 relate to
conventional equipment, viz. a bath tub, a wash basin and a WC
chair. At 12 there have been shown pipes for warm and cold water
and a ventilation air passage. Numeral 13 refers to a sewer pipe.
Those pipes and passages may be mounted entirely inside the wall
but it is often preferred to locate two bathrooms, kitchens or
corresponding room units pair-wise adjacent each other in such a
way that the pipes and tubing of both rooms will be housed in the
space formed between the two parallel adjacent walls of the room
units.
A room unit manufactured in accordance with the principles of the
present invention has extremely low weight--as a matter of fact it
weighs less than 10 percent of a corresponding room unit made in
concrete. The underlying reason is that, thanks to the profile of
the sheet metal elements, the strength properties of the material
are optimally utilized. In addition thereto the construction may be
reinforced at those places where the load is at maximum, such as
near the wash basin and the WC chair. Such reinforcement could
usefully consist of plates, ribs or brackets. It is generally
preferred also in the vertical walls to have inserts of a sound and
heat insulating material, such as mineral wool. Waterproofing can
be attained by means of plastics material coatings attached to the
inner walls by spraying or cementing. Correspondingly, the floor of
the unit may be covered with a textile laminate plastics. In order
still further to improve the sound-insulating properties of the
unit and its capacity to withstand corrosion it is in some
instances advisable to spray all the sheet metal details with a
suitable composition, e.g. based on asphalt.
From what has been said above it should be apparent that in
carrying out the invention practically it is possible in many
different ways to modify the structural nature of the various
components. This is true not only as far as the sanitary equipment
inside the room unit is concerned but also in respect of the
details making up the floor, the walls and the ceiling of the unit.
The sole necessary condition is that the floor and the walls do, as
a load-supporting framework, comprise elongated sheet metal
elements each having a web portion and flanges, generally of
U-configuration.
* * * * *