Insulated concrete forms (ICFs) of variable design comprise an increasingly important and popular product for construction of building and other structures. Such ICF products typically include a pair of spaced sidewalls fabricated from an insulating material. The paired sidewalls are maintained in a spaced relationship by connecting ties. The ties may be configured to support reinforcing bars (rebar). The ICF products are modular sizes and designed to be stacked to thereby provide a form adapted to receive poured concrete in the space between the sidewalls, thereby resulting in a poured concrete structure intermediate sidewalls of an insulating material. An example of ICF products are depicted in U.S. Pat. No. 7,861,479, which is incorporated by reference as if fully set forth herein.
Further details, aspects, and embodiments of the subject matter of this disclosure will be described, by way of example only, with reference to the drawings.
An insulated concrete form including of first and second spaced sidewalls forming a cavity therebetween, said sidewalls having an inside surface and interconnected by a plurality of form ties, and a form insert made of an insulative material positioned adjacent the inside surface of at least one sidewall which thereby increases the R-value of the resulting structure.
A method for construction of structures utilizing insulated concrete forms comprising, positioning a course of a plurality of insulating concrete forms such that the course is adapted to receive poured concrete, wherein the course comprises a portion of a structure and wherein the course includes a plurality of interconnected exterior sidewalls having outside surface and an inside surface and positioning a plurality of form inserts in contact with the inside surface of the interconnected exterior sidewalls such that the form inserts cover ate least about 80% of the surface area of the inside surface.
Aspects of this disclosure can be applied in the construction of structures utilizing insulated concrete forms. One advantage of use of an insert as described herein is to increase the resistance to heat flow or R-Value of such structures in an efficient and cost effective manner. The higher the R-Value, the more effectively the structure resists heat flow. Another advantage of use of an insert as described herein is that it may be used with existing designs of insulated concrete forms. Additional advantages of an insert as described herein include ease of installation, reduction of waste, and decreased incidence of human error in the construction of structures utilizing insulating concrete forms. These and other advantages of use of an insert as described herein are apparent from the description below and the accompanying drawings.
Referring to
Referring to the Figures by example, in an embodiment, a form insert (1) can include a form insert outward face (22), a form insert inward face (23), and a form insert thickness (24) defined in a first horizontal direction (z) between the form insert outward face (22) and the form insert inward face (23). The form insert (1) can include a form insert front side (25), a form insert rear side (26), and a form insert length (27) defined in a second horizontal direction (x) between the form insert front side (25) and the form insert rear side (26). The form insert (1) can include a form insert top surface (28), a form insert bottom surface (29), and a form insert height (30) defined in the vertical direction (y) between the form insert top surface (28) and the form insert bottom surface (29).
Referring to the
Referring to
Referring to 7B, in an embodiment, an outward face (22) of a form insert (1) can be positioned to cover an overall inside surface area or a portional surface area of the inside surface (6) of a sidewall (3). An example overall inside surface area can be defined in the vertical direction (y) between the first sidewall top surface (7) and the first sidewall bottom surface (8) and in the second horizontal direction (x) between the first sidewall front side (34) and the first sidewall rear side (35). An example portional surface area of an inside surface (6) of a sidewall (3) can be defined in the vertical direction (y) between the first sidewall top surface (7) and the first sidewall bottom surface (8) and in the second horizontal direction (x) between a first lateral member (38a) and a second lateral member (39a), as shown in
In addition, as shown in
In addition, in an embodiment, form inserts can be installed on the interior surfaces of both, opposing sidewalls of the insulated concrete forms (not shown). In addition, in an embodiment, a second form insert can be positioned on an inward face of a first insert which was positioned on the interior surface (6) of a sidewall (3) to further increase the R-Value of the resulting structure.
In an embodiment, a form insert may also be formed of a single piece configured to span adjoining forms in the lateral direction. For example, a single insert may comprise a single piece of insulating material which spans the lateral dimension of two ICF blocks and thus includes slots that will accommodate placement over the ties associated with two adjoining ICF blocks. One advantage of such embodiment is that the insert can facilitate the joinder of the adjoined blocks.
In an embodiment, inserts may vary in thickness or material. In an embodiment, the form insert thickness (24) is about 5% to about 200% of the first sidewall thickness (33) and less than the cavity thickness (40). In an embodiment, the form insert thickness is about 0.5 inch to about 3.0 inches. In an embodiment, a form insert (1) can have an R-Value of about 5. In an embodiment, inserts may include additional features such as passageways for conduit, piping, sensors, or controls, or structures for gripping fasteners for wallboard or siding.
In an embodiment, an insert (1) can be dimensioned so as to fit between the lateral members (41) of the form ties (4) and engage the lateral members of the form ties (4) so as to create a friction fit. The insert length (27) of the form insert can be slightly greater than the spacing distance (42) between form ties so that the form insert (1) maintains contact with and is held in position by the lateral members of a pair of spaced form ties (4). The friction fit also assists to maintain the position of the form insert (1) against the interior surface (6) of the sidewall (3). In one embodiment, raised embossments (13) on the side of the insert (1) are used to enable the friction fit. The raised embossments (13) can be in the form of a brand name, logo, or R-value.
In addition, in an embodiment, the insert (1) includes a ledge (16a, 16b) on the front and rear side of the form insert near the top of the form insert. The ledges (16a, 16b) can be configured to engage a portion of a first upper surface (45) of the lateral members of a pair of form ties (4) so that the form insert (1) cannot be inserted below the position at which the ledges engages the form ties, thereby maintaining the top surface (17) of the insert flush or substantially aligned with the top surface (7) of the form (2). Substantially aligned as used herein means within plus or minus of about half an inch of being level or flush with the referenced surface. In an embodiment, the distance between each ledge (16a, 16b) and the form insert top surface (28) can be from about 0.5 inch to about 6 inches. In an embodiment, the distance between the ledge (16a, 16b) and the form insert top surface (28) is about 3.5 inches. In one embodiment, the form insert (1) can be about 32 inches high, about 7.50 inches wide, and about 2 inches thick. In an embodiment, the width of the insert (1) can vary from the top to the bottom. For example, in one embodiment, the top of the insert can be about 8 inches wide, the middle portion of the insert can be about 7.50 inches wide, and the bottom portion can be about 7.25 inches wide. In an embodiment, the insert can taper gradually from about the middle portion toward the bottom portion. In an embodiment, the insert can taper gradually from point at about 25% of the height of the insert toward the bottom portion. The term about as used herein for purposes of approximating length, height, or thickness means plus or minus fifteen percent.
In an embodiment, the insert (1) utilizes a tongue (14) and groove (15) structure to interlock stacked inserts. For example,
In an embodiment, a kit can include at least one insulated concrete form as described herein and at least an embodiment of a form insert as described herein. In kit can include instructions for the user describing how the user can position a course of a plurality of insulating concrete forms such that the course is configured to receive poured concrete. A course is understood in the art and shown in U.S. Pat. No. 7,861,479 which is incorporated by reference. For example a course can include a portion of a structure wherein the course includes a plurality of interconnected exterior sidewalls having outside surface and an inside surface. In an embodiment, the instructions can describe how to position a plurality of inserts in contact with the inside surface of the interconnected exterior sidewalls such that the form inserts cover ate least about 80% of the surface area of the inside surface, as described herein. In an embodiment, the resulting R-Value the portion of the structure is greater than if the form inserts were not used and can result in an increase, for example of at least about R-4. In an embodiment, the increase to can be in between about R-9 and about R-18.
An advantage of us of an insert as described herein is to increase the R-Value of structures constructed with insulated concrete forms. R-Value as used herein can be measured using ASTM standards known in the art. The additional thickness of insulative material introduced to the form by the insert increases the R-Value of the resulting structure. For example, if the insulated concrete form provides an R-Value of 23, use of an insert with R-Value of 9 can increase the R-Value of the resulting structure to R-32. In various embodiments, the R-Value of a form insert can be about R-4 to about R-12, including each value in between. In an embodiment, the R-Value of a form insert can be increased by laminating an insulative film on an inward or outward face of the form insert. Another advantage is that the insert can be positioned on the interior surface of the sidewall which faces the exterior of the structure. Such placement increases the energy performance of the wall. Another advantage of us of an insert as described herein is that the insert can be utilized with existing designs of insulated concrete forms, thereby increasing the versatility of existing forms to be used in applications which require higher insulative standards. Another advantage associated with the compatibility of the insert with existing forms is that existing tie design need not be changed to accommodate additional insulative material (a front view of an example of a complete tie (18) is shown in ghost format in
The detailed drawings, specific examples and particular embodiments given serve the purpose of illustration only. While some of the specific embodiments of the systems and methods described and shown herein concern building a vertical wall utilizing insulated concrete forms, the teachings of the present invention may be applied to apparatuses that build other structures using insulated concrete forms. In the foregoing specification, the invention has been described with reference to specific examples of embodiments of the invention. It will, however, be evident that various modifications and changes may be made therein without departing from the broader spirit and scope of the invention. Furthermore, the insert may have any suitable size and shape. Furthermore, the insert may be implemented as single or multiple pieces, while functionally operating as a single piece. Also, inserts functionally forming separate devices may be integrated in a single physical device. However, other modifications, variations and alternatives are also possible. The specifications and drawings are, accordingly, to be regarded in an illustrative rather than in a restrictive sense. While certain embodiments detail certain optional features as further aspects of the invention, the description is meant to encompass and specifically disclose all combinations of these features unless specifically indicated otherwise or physically impossible.
This application claims priority from U.S. Provisional Application No. 61/553,712, entitled, “An Apparatus and Method for Construction of Structures Utilizing Insulated Concrete Forms,” filed on Oct. 31, 2011 and which is herein incorporated by reference in its entirety.
Number | Date | Country | |
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61553712 | Oct 2011 | US |