Upright structural members (e.g., posts) are commonly used in building structures such as post frame structures and the like. Upright structural members are also commonly utilized to support decks and other structures. Such posts may need to support substantial vertical and side loads. One method that has been developed for supporting such posts includes digging a hole, and pouring concrete in the hole. The concrete may be supported/formed utilizing a tubular form known as a sonotube that is positioned in the opening prior to pouring of the concrete.
The present invention relates to a footing form or support that can be utilized to support posts in an upright position without the use of concrete or the like. According to one aspect of the present invention, the footing form of the present invention includes a structure that may be disk-like in shape, with a generally planar lower web defining a center, a central portion proximate the center, and a peripheral outer edge portion. The disk-like structure includes a plurality of upright structural webs extending from the central portion of the lower web to the peripheral outer edge portion of the lower web. The upright structural webs include upper edge surface portions forming at least a part of an upper support surface of the disk-like structure such that loads on the disk-like structure from an upright structural member such as a post are distributed outwardly by the upright structural webs to the lower web. The disk-like structure further includes a plurality of concentric circular upright webs extending around the center of the lower webs. The concentric circular webs, the structural webs, and the lower web together define a plurality of upwardly-opening pockets. The disk-like structure may include at least one aperture through the lower web at the bottom of each pocket to provide for drainage of water and the like from the pockets. The disk-like structure may comprise a one-piece molded member that is made from fiber-reinforced polymer or the like.
The footing form may optionally include a protective sleeve that fits over an upright post or the like. The upright sleeve may include a pin that fits into a keyhole-shaped opening in the planar lower web to interconnect the sleeve to the disk-like lower piece. The sleeve may include inwardly-protruding barbs or retaining features that engage slots or the like cut in side surfaces of a post to thereby interconnect the post and sleeve. The barbs may be one-way members that permit a post or the like to be inserted into the sleeve, yet prevent removal of the post/upright structural member from the sleeve.
During construction, a hole is dug in the earth, and the disk-like structure is positioned at the bottom of the hole. The post is then positioned in the hole on the footing, and the hole is then filled with dirt or the like. If the footing form includes a sleeve to cover the lower portion of the posts, the sleeve is positioned on the lower end of the post after the disk-like portion of the footing form is positioned at the bottom of the hole. Notches or the like may be sawed into the side surfaces of the post prior to insertion of the post into the sleeve. The one-way notches on the sleeve are received in the notches on the post to thereby retain the post in the sleeve. The post and sleeve may be connected to the disk-like portion of the footing form by inserting the pin at the bottom of the sleeve into the keyhole-shaped opening in the lower web, and the sleeve and post are then shifted sideways to engage the pin with the narrow portion of the keyhole-shaped opening. It will be understood that the sleeve portion may be connected to the disk-like portion prior to positioning of the footing form in the hole, the disk-like portion may be first positioned in the hole, followed by connection of the sleeve to the disk-like portion. Also, the post may be inserted into the sleeve prior to connection of the sleeve to the disk-like portion, or the post may be inserted into the sleeve after the sleeve has been connected to the disk-like portion.
These and other features, advantages, and objects of the present invention will be further understood and appreciated by those skilled in the art by reference to the following specification, claims, and appended drawings.
For purposes of description herein, the terms “upper,” “lower,” “right,” “left,” “rear,” “front, ” “vertical,” “horizontal,” and derivatives thereof shall relate to the invention as oriented in
With reference to
With further reference to
With further reference to
In addition to the structural webs 22, footing form 1 also includes a plurality of ring-like concentric webs 30 that extend upwardly from base web 20. The concentric webs 30 have an upper edge surface 31 that is preferably at the same height as upper edge surface 27 of structural webs 22. In the illustrated example, structural webs 22 are integrally formed with base web 20, with inner ends 33 that are integrally formed with an innermost concentric web 32, and outer ends 34 that are integrally formed with outer circular web 25. In the illustrated example, the upper edge surfaces 27 of structural webs 22 and the upper edge surfaces 31 of concentric webs 30 and 32 form upper support surface 7 that, in use, abuttingly supports a lower end 38 of a post 5 or 15.
The structural edge 22 and concentric webs 30 together define a plurality of upwardly-opening pockets 40. A plurality of apertures 41 through base web 20 provide for drainage of water and the like from the pockets 40. Preferably, each pocket 40 includes at least one aperture 41 through base web 20.
In a preferred embodiment, the footing forms 1 and 10 are made of an injection molded polymer material having fiber reinforcement material mixed in to provide a composite material. The footing forms 1 and 10 are preferably of a one-piece integrally-molded construction. This construction allows the footing forms 1 and 10 to be fabricated in a very cost-effective manner, and eliminates the cost associated with multiple-piece arrangements. In a preferred embodiment, the base web 20, structural webs 22, and concentric webs 30 are planar with a generally uniform cross-sectional thickness. However, the thickness, size, and shape of the webs may vary. For example the webs 22 and 30 may be tapered somewhat to facilitate removal of the footing form 1 from the mold tool during the production process. Also, various web thicknesses and shapes may be utilized without departing from the scope of the present invention.
In the description given above in connection with
With further reference to
Post sleeve 65 includes one or more retaining lips or barbs 75, 76, 77 and 78 that project inwardly, and engage notches 79, 80, 81 and 82, respectively that may be cut into the side surfaces 71-74 of a post 5 or 15. In the illustrated example, the retaining lips or barbs 75 include a first tapered portion 83 that extends inwardly at an obtuse angle relative to the sidewall, and a second portion 84 (
With further reference to
The keyhole-shaped opening 91 includes an enlarged portion 96 that is at least as large as the enlarged end 93 of pin 90, such that the enlarged end 93 of pin 90 can be inserted through enlarged portion 96 of keyhole-shaped opening 91. The post sleeve 65 is then shifted relative to the footing form 1 or 10 to thereby position pin 90 in smaller end portion 97 of keyhole-shaped opening 91. The end 97 of keyhole-shaped opening 91 has a width “W” (
Referring back to
With further reference to
If the footing form includes a post sleeve 65, notches 79-82 are cut into the sides of the post 5, 15 utilizing a saw or the like. The post sleeve 65 may be connected to the footing form 1 or 10 prior to positioning of the footing form 1 or 10 in the hole 50, and a post 5 or 15 may be then be inserted into the post sleeve 65. Alternately, the footing form 1 or 10 may be positioned in the hole 50, and a post sleeve 65 may be installed on a post 5 or 15. The post sleeve 65 and post 5 or 15 may then be positioned on the footing form 1 or 10 with pin 90 engaging the keyhole-shaped opening 91 as described in more detail above.
The footing form of the present invention provides a very cost-effective support for upright structural members such as posts. The footing form is very quick and easy to use during construction of a building deck, post frame structure, or the like, and thereby reduces the labor and other costs associated with conventional footing arrangements. The structural webs 22, concentric webs 30, and base web 20 provide a structure that distributes the loads outwardly from the post 5 over a relatively large area such that concrete or other conventional supports are not required. Although the footing form has been described as having a diameter of about ten inches or about sixteen inches, it will be readily appreciated that the footing form may have different sizes, shapes, and configurations depending upon the requirements of a particular structure to be supported. Also, although the footing form has been described as having a circular perimeter, with concentric webs, the footing form may have a peripheral shape that is not circular. Furthermore, the base web may be non-planar, and the concentric webs and structural webs may have non-uniform heights.
In the foregoing description, it will be readily appreciated by those skilled in the art that modifications may be made to the invention without departing from the concepts disclosed herein. Such modifications are to be considered as included in the following claims, unless these claims by their language expressly state otherwise.
This application claims the benefit of U.S. Provisional Patent Application No. 60/830,091, filed on Jul. 11, 2006, the entire contents of which are incorporated herein by reference.
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