DISPOSITIF D'ANCRAGE EN ACIER POUR FIXATIONS SUR MURS EN BETON

STEEL ANCHOR BRACKET FOR SURFACE MOUNT ON A CONCRETE WALL

Abrégé français

Dispositif d'ancrage en acier encastré dans la surface d'un mur en béton à moitié solide avant que le béton ne durcisse. Le support a une surface de référence qui, lorsqu'alignée avec la surface du mur en béton, donne une surface verticale perpendiculaire à la surface du mur. La surface prolongée verticalement fournit un ancrage pour les éléments de structure en acier qui y sont rattachés. Une deuxième tige prolongée est immergée dans le béton mou pour ancrer le support dans le béton.

Abrégé anglais

A metal anchor bracket which is embedded into the surface
of a semi-solid concrete wall before the concrete has set. The
bracket has a reference surface which when flush with the
surface of the concrete wall produces a vertical surface which is
perpendicular to the surface of the wall. The vertically extending
surface provides an anchor for steel super structural members
which are attached thereto. A second vertically extending leg is
immersed into the soft concrete to anchor the bracket in the
concrete.

Revendications

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CLAIMS
1. A bracket insert for placement in a recently poured
concrete structure comprising an elongated sheet metal member
having stepped cross-section formed by bending the insert to fold
the member along parallel lines extending along the length of the
insert,
a first step of said member section forming an upstanding
sheet metal flange to form a first leg of said bracket insert above
the concrete surface in which the insert is inserted,
a second leg of said section being orthogonal to said first leg
and forming a second flat surface, said second surface being flush
with the surface of said concrete when said insert is inserted into its
final position in said concrete surface,
a third leg of said section being orthogonal to said second leg
and extending in a direction opposite to said first leg, said third leg
forming a third flat surface substantially parallel to said first flat
surface,
and a fourth leg of said section being in the form of a lip
formed orthogonally to said third surface, said insert being inserted

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into said concrete so that said third and fourth leg sections are
buried in said concrete.
2. A bracket insert as claimed in claim 1 wherein the insert is
formed from steel which is coated with a protective coating.
3. A bracket insert as claimed in claim 2 where the third leg
is formed in said metal sheet is provided with a series of apertures
to permit the flow of concrete therethrough.
4. A bracket insert as claimed in claim 3 wherein the first leg
sheet surface has pre-drilled holes for mounting other members
thereto.
5. An anchor insert for a concrete wall formed from an
elongated flat metallic sheet so as to form a plurality a sheet metal
sections formed by bending the sheet along parallel lines extending
lengthwise along the sheet,
a first sheet section being flat and being joined to a second
sheet section by an orthogonal bend, such that the first and second
sections are of substantially the same width,
a third sheet section joined at the opposite edge of the
second sheet section by a second orthogonal bend,

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said third sheet section extending in a direction away from
said first sheet section and being in a parallel plane to said first
sheet section,
and a fourth sheet section being a lip formed in edge of said
sheet by an orthogonal bend in said third section,
said third sheet section having substantially the same width
as said first and second sheet sections.
6. An anchor insert as claimed in claim 5 wherein said lip
folds backwardly toward said first sheet section.
7. An anchor insert as claimed in claim 6 wherein said third
sheet section is provided with a series of spaced apertures slightly
smaller than the width of said third sheet section.
8. An anchor insert as claimed in claim 7 where the first
sheet section is provided with a series of spaced pre-drilled holes
for attachment of other structural members.
9. An anchor insert as claimed in claim 8 wherein the sheet
is a steel sheet covered with a protective coating.

Description

2179227
EHO-961 1 3
STEEL ANCHOR BRACKET FOR SURFACE MOUNT ON
A CONCRETE WALL
This invention relates to an angle bracket insert which is
inserted in the top surface of a concrete wall while the concrete is
still in a semi-liquid state. The bracket insert may be
conveniently inserted into the concrete medium to a
5 predetermined depth because of its shape. The shape of the
bracket also enables the installation crew to quickly install the
bracket in the setting concrete and be confident that the
upstanding leg of the bracket is perpendicular to the top surface
of the wall. The bracket may be accurately placed and moved
laterally to the desired predetermined location. Once the
concrete wall has set, the bracket cannot be removed without
destruction of either the bracket or the top surface of the wall.
The bracket insert is primarily intended to be used in the

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construction of buildings where steel joists and studs are used for
floor and wall construction.
BACKGROUND OF THE INVENTION
In the construction of buildings in which steel super structural
5 members are utilized for building construction, it is customary to
secure the steel superstructure members to some form of a plate
(angle plate) which is bolted to the concrete wall on which the
structural steel members are placed. A steel header is usually
fastened to the angle plate and the ends of the structural
members, i.e. floor joists, to the steel header.
The entire construction depends on the accurate placement
of anchor bolts sunk into the semi-solid concrete which ultimately
hold the anchor plate firmly to the concrete. The anchor plates
are provided with predrilled holes which are supposed to fit over
15 the exposed bolts projecting from the surface of the concrete.
Nuts are supplied for threading onto the threaded ends to hold
the angle plate firmly against the concrete surface.
In most instances, the placement of the anchor bolts is
done by a different work crew, than the crew installing the steel
20 superstructural members such as steel floor joists. Because

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each bolt must be individually placed, the chances of placement
error is great... the bolts may not be perpendicular to top surface
of the wall and each bolt must be carefully placed in order to fit
into the predrilled holes of the angle bracket. If the bolts are
s correctly placed in the concrete, sometimes the placement crew
splash concrete onto the threaded portion of the bolts making the
operation of screwing a nut onto the threads a virtual
impossibility. Any exposed bolt which is not correctly placed
merely serves to complicate the attachment of the angle plates.
Workers may cut holes in the angle members or in some
instances cut off the protruding but misplaced bolt.
If the foundation and the anchor bolts is allowed to stand
idle for any length of time, the bolts will no doubt rust, leading to
another difficulty in the assembly of the anchor plate to the top
15 surface of the wall.
This invention overcomes the shortcomings of the prior art
by the complete elimination of anchor bolts from the top surface
of the foundation wall.

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SUMMARY OF THE INVENTION
This invention comprises a steel plate having three right
angle bends to produce an elongated bracket having four flat
surfaces each orthogonal to the adjacent surface such that two
5 pairs of parallel surfaces are produced and each pair of parallel
surfaces is orthogonal to the other pair.
The surfaces are made so that a first surface of the bracket
will lie on the top horizontal surface of the recently poured
concrete wall while one adjacent leg protrudes vertically above
0 the wall surface to engage the structural steel members to be
attached to the bracket. The other adjacent vertical leg is
embedded in the soft concrete. This leg is provided with
apertures to assist in placement in the recently poured concrete
as well as positive locking in the cured concrete. An upturned
15 flange is provided on the opposite end of the apertured leg to
provide additional stabili~ation and locking in the concrete wall.
RELEVANT PRIOR ART
U .S. Patent 3,574,984 April 1 3,1 971

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BRIEF DESCRIPTION OF THE DRAWINGS
FIGURE 1 is a perspective view of the bracket insert of this
invention;
FIGURE 2 is a sectional view showing the bracket mounted
5 in the concrete wall of a building.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring to FIGURE 1, a length of the bracket insert 10 is
shown in perspective. The bracket insert 10 may be
manufactured in any length but it will be found that a standard
10 length of 8-10 feet will be a standard and shorter lengths may be
pre-manufactured or cropped from the longer lengths. The
bracket insert 10 has four legs 12, 14, 16 and 18. The four leg
surfaces are all orthogonal to adjacent surfaces.
The reference surface 14 is embedded flush with the top
surface of the recently poured concrete wall. Leg 12 of bracket
10 thus protrudes above the top surface of the concrete wall to
be used as an anchor for the steel members to be attached
thereto. Holes such as the one shown at 20 are provided at
equally spaced intervals for attachment of structural members
20 thereto. The downwardly extending leg 16 is made to be inserted

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into the soft concrete of a recently poured wall. Leg 16 has a
series of apertures 22 therein which enable the leg 16 to be
laterally shifted in the soft concrete to allow accurate placement
of the bracket before the concrete is cured. An overturned flange
5 18 is provided at the end of leg 16 to provide stiffness to leg 16
and additional stabilization of the bracket 10 in the soft concrete
prior to setting.
FIGURE 2 is a cross-sectional view showing the bracket 10
mounted in a concrete wall 24. The bracket 10 is embedded in
wall 24 until the top surface of leg 14 is flush with the top surface
of the concrete wall. The bracket 10 is then moved laterally until
the desired lateral position is achieved. Apertures 22 assist in
allowing leg 16 to move laterally through any aggregate. Flange
18 will probably rest on some aggregate because of the manner
in which bracket 10 is inserted into the soft concrete. This helps
to prevent distortion of bracket insert 10.
An eight foot length of bracket 10 may be conveniently
inserted into the soft concrete to produce an upstanding vertical
leg 12 to which structural members such as studs, joists or siding
20 may be attached.

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When compared to the prior art methods of producing
anchor members in the top of a concrete wall, this device
produces superior advantages. The bracket 10 is placed in the
uncured concrete until the top surface of leg 14 is flush with the
5 top surface of the concrete wall. If the top surface of the
concrete has been screeded1 it is usually a simple matter to sink
leg 16 into the soft concrete until the top surface of leg 14 lies
flush with the screeded surface of the wall. It is a simple matter
to determine that surface 14 is horizontal, and once surface 14 is
0 horizontal, leg 12 must be vertical. Because of the construction
of bracket insert 10, it is extremely rigid in the longitudinal axis
and once the two ends have been accurately located in the
concrete wall, it will be found that the bracket insert 10 will be
straight and true without curving in the longitudinal axis.
This device is not subject to moving once set in the
concrete wall, and it may be accurately placed by locating both
ends of the bracket with the knowledge that the rest of the
bracket is in line with the two ends. Inserts 10 may be placed
end to end to provide a continuous vertical leg 12.

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The insert itself may be made out of 18 gage steel which
has been coated with protective coating such as by galvanizing to
resist corrosion. This gauge has been found to be satisfactory
for most applications.
When compared to prior art methods of providing anchors
in top surfaces of concrete walls, the bracket of this invention is
superior. No misplaced or mis-aligned bolts in the cured
concrete must be dealt with, and no concrete covered threads
are to be encountered. The building process is expedited as a
result.
When compared to bracket insert of U.S. Patent 3,574,984,
it will be found that the applicant's bracket is superior in
installation, and function. The above U.S. Patent requires that
the insert be nailed to the form work for installation before
pouring of the wall is begun. The device requires a Styrofoam
insert in order to perform its function, thus a more complex
structure (and more expensive) results.
Though the applicant's device is structurally simple, it is a
robust structure, well designed to accomplish the function of easy

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insertion and adjustment into the concrete wall and yet provide
an accurate and sturdy anchor once the concrete has set.

Dessin représentatif