MODULAR FORMWORK SYSTEM FOR CONRETE OR OTHER SIMILAR MATERIAL COMPRISING A PLURALITY OF INTERCONNECTABLE FORMWORK COMPONENTS

SYSTEME DE COFFRAGE MODULAIRE POUR BETON OU AUTRE MATERIAU SEMBLABLE COMPRENANT PLUSIEURS ELEMENTS DE COFFRAGE INTER-RACCORDABLES

English Abstract

The invention provides an improved formwork assembly for erecting a concrete
or other similar
material wall. The assembly includes a plurality of elements to form varying
thicknesses and
varying heights of wall with or without rigid insulation. Each element is
interconnecable to its
counterpart to form two parallel rows of formwork into which the concrete or
other similar
material is poured. The connecting elements have holes in their length to
facilitate the flow of the
concrete or other similar substance and for the placing of reinforcing rod for
initial strength and
stability. The assembly also provides for the construction of corners so that
walls can be joined at
a 90 degree angle on both sides of the parallel rows of elements as well as a
means of replacing
damaged wall elements after construction.

Claims

Claim
What is claimed is:
1. A formwork assembly (drawings IW2-1068, IW2-107, IW2-108) for erecting a
concrete or
other similar substance wall comprising:
a plurality of elongated, flat wall elements (drawing IW2-109) having means of
connection
on their longitudinal edges and being presented in an edge to edge
relationship to form two
parallel rows to define opposite flat surfaces of the said formwork;
a plurality of connecting members (drawings IW2-1048, IW2-105R, IW2-113) of
varying
sizes having openings along their length to allow the flow of concrete or
other similar
substance and having a means of connection along their longitudinal edges to
be connected
to the above flat wall elements by sliding the connecting members in to the
connection
means of the flat wall elements so as to simultaneously engage two flat wall
elements of
parallel rows;
a means of adding rigid insulation to the said formwork (drawings IW2-1038,
IW2-
104R);
a plurality of elements (drawings IW2-110, IW2-112, IW2-111, IW2-114) with a
means
of connection along their longitudinal edges to form inside and outside
corners to the said
formwork elements to create 90 degree corners on the opposing sides of the
parallel rows
of the formwork;
a means of connection which allows replacement of damaged flat wall elements
with a cap
placed over that connection (drawings IW2-101R2, IW2-115).

Description

CA 02329358 2000-12-29
Description
Modular Formwork System For Concrete or Other Similar Material Comprising a
Plurality of
Interconnectable Formwork Components
This invention provides an improved formwork assembly method for erecting a
concrete or other
similar material wall.
Background of the invention
Concrete formwork assembly has long been used in construction of all types of
buildings. This
type of modular formwork first was invented in Norway as an octagonal form
interconnected
longitudinally and is widely used in Europe. The Canadian version is shown in
the following
Canadian patents:
2,218,600 1999/08/31 Octaform Systems Inc.
2,215,939 1999/08/24 Octaform Systems Inc.
and though such formwork assembly systems have been mildly successful there
has been a
continuing need for improvement.
Summary of the Invention
Considered broadly, formwork assembly systems are a plurality of elements with
sliding
connection methods along longitudinal edges so as to form parallel rows of
wall elements. These
formed cavities are then filled with concrete or other similar material with
reinforcing bar
interconnected inside the formwork. Other formwork assembly systems have had
problems in
erection with too many elements (Octaform Systems requires 4 extra elements
per cylinder to
strengthen the outer wall) required to complete the wall section and if any of
the elements are
missed the flat wall is pushed out by the concrete filling. Our system negates
the need for these
four elements by changing and strengthening the flat wall element and the
connection method.
Further our system provides for a method of replacing damaged wall elements in
some cases that
have heretofore been unremovable and irreplaceable even after damage. Our
connection method
allows different siding finishes by using a "snap" connector system to easily
change styles.
In the drawings, which form a part of this specification,
Figure IW2-lOIR is an enlarged view of the connection detail of the flat wall
elements and
the connector.
Figures IW2-1008, IW2-1028 are full wall section details of the 4" and 6"
walls
respectively.
Figure IW2-1038 is a full wall section detail including a rigid insulation
element.
Figures IW2-113, IW2-1048, IW2-lOSR are views of the 4", 6" and 8" wall
connectors
respectively.

CA 02329358 2000-12-29
Figures IW2-108, IW2-107, IW2-1068 are full wall section details of the 4", 6"
and 8"
walls respectively showing inside and outside corner details.
Figure IW2-109 shows flat wall panel detail
Figures IW2-112, IW2-111, IW2-110 are views of the 4", 6" and 8" walls inside
corner
elements respectively.
Figure IW2-114 shows outside corner element for all wall systems
Figure IW2-115 shows "snap" connector detail.
Detailed Description of the Invention
The particular advantages of the invention illustrated are ease and quickness
of erection, strength,
ease of change of style, the ability to add insulation factors and the ability
to erect varying
tlucknesscs of wall.
The elements are of extruded PVC or other similar material for ease of
handling and shipping
The longitudinal connecting elements have holes (figure IW2-113) spaced
throughout their length
to facilitate the flow of concrete or other similar material and the placement
of reinforcing rod to
strengthen the wall. Their connectors consist of two parts (figure 1W2-10182)
1. A sliding connector along the longitudinal length for a connection method
to the flat
wall elements
2. A "snap" connector for a connection method for a cap or other style of
siding element.
The flat wall elements (figure IW2-109) is a universal flat wall
element for use in all wall applications and can be of any color and is
changeable after construction
and pouring of the concrete or other similar material.
The inside and outside comer elements facilitate ease of transition in
changing wall direction
(figures IW2-108, IW2-107, IW2-1068)
As best seen in figures IW2-10082, IW2-1028 and IW2-1038 the formwork assembly
system
connects along the longitudinal length of the elements to form a cavity that
when filled with
concrete or other similar material makes an impenetrable wall system
impervious to water and
weather.