Static molds – In situ construction engineering type or building type-mold... – Forming building structure
Reexamination Certificate
2000-10-26
2002-09-03
Callo, Laura A. (Department: 3635)
Static molds
In situ construction engineering type or building type-mold...
Forming building structure
C249S035000, C249S040000, C249S044000, C249S047000, C249S190000, C249S192000, C052S293300, C052S294000, C052S741130, C052S742140, C052S745100
Reexamination Certificate
active
06443418
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to an ultra thin-type metallic form panel suitable for constructing a foundation of a building, a form employing the same, and a method for constructing a foundation.
DESCRIPTION OF THE PRIOR ART
Forms employing metallic panels that underwent rust preventing treatments, such as galvanizing, are recently being used as forms in constructing concrete buildings. Such a method for constructing concrete buildings is advantageous in that labor for constructing forms can be saved by omitting poles, or the like, for supporting back surfaces of forms by fixing the forms to positions for constructing the concrete building by using nails or the like. Thus, labor for decommissioning forms can be saved by embedding the forms into the concrete, and the strength of the concrete building may be improved.
An example of such a form is suggested, for instance, in Japanese Patent Unexamined Publication No. HEI5-133028 (1993), wherein the form is comprised of a metallic form panel formed with a plurality of reinforcing ribs extending in an identical in-plane direction and obtained by bending a metallic plate. Outlet holes allowing seepage of concrete are formed between the reinforcing ribs of the metallic form panel. By using such forms, a part of the installed concrete is seeped through the outlet holes and is hardened. Because the hardened concrete binds the form panels to the installed concrete, no clearance will be formed between the concrete building and the form panels even though the installed concrete shrinks upon curing and hardening. On the other hand, the following subjects still remain in constructing a concrete building by using such forms.
(1) In constructing a foundation, the forms will be exposed above the ground surface so that finishing mortar needs to be constructed to the exposed portions for preventing degradations in external appearance of the building. Such operations are troublesome.
(2) In constructing a foundation with a footing portion, the forms need to be constructed and the concrete installed by performing at least two steps, for the footing portion and a footing beam portion, so that labor for performing these construction operations could not be saved using present methods.
(3) Since adjoining forms are combined by using screws or the like, such combining operations are troublesome.
(4) One would cut his or her fingers with lateral edges of the forms when constructing the forms so that safety considerations were insufficient.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide an ultra thin-type metallic form panel, a form employing the same, and a method for constructing a foundation with which labor for performing construction of a concrete building can be remarkably saved.
The ultra thin-type form panel according to a first preferred embodiment in accordance with the present invention is arranged in that a plurality of reinforcing projecting lines extending in longitudinal directions obtained by bending a metallic plate are formed in an aligned manner with intervals being formed in lateral directions, wherein guiding portions for bending are formed at intermediate portions in the longitudinal directions by cutting at least top surfaces and both lateral sides of the respective reinforcing projecting lines in lateral directions and the remaining portions are remained as coupling portions.
Since these form panels may be bent along the guiding portions for bending, the form panels may be bent to assume shapes that correspond to shapes of outer surfaces of a concrete building including portions which thicknesses differ from each other such that a possible scope of constructing the concrete building that may be built in a single step by installing concrete to thereby decrease the number of constructing forms. For instance, in case of constructing a foundation including a footing portion, it was necessary to construct the forms by performing two steps as described above in a conventional method for construction. However, since the form can be constructed by bending the form panel to fit along the footing portion and the footing beam portion so that the foundation may be built in a single step for constructing the form.
When constructing the foundation as a concrete building, portions of the form panels that are exposed above the ground surface may be folded in a downward manner along the guiding portions for bending to thereby embed the entire form panels into the ground. In other words, since it is possible to perform construction such that no form panels are exposed to the exterior upon completion of back filling of the foundation, operations for forming finishing mortar to the form panels may be omitted.
The ultra thin-type form panel according to a second preferred embodiment of the present invention is arranged in that a plurality reinforcing projecting lines extending in longitudinal directions obtained by bending a metallic plate are formed in an aligned manner with intervals being formed in lateral directions, wherein at least a part of top surfaces of respective reinforcing projecting lines remain as coupling portions at intermediate portions in longitudinal directions while the remaining portions are cut in lateral directions to form guiding portions for bending.
Similar to the first preferred embodiment, by bending the form panels along the guiding portions for bending, a possible scope of constructing the concrete building that may be built in a single step is achieved by installing concrete to thereby decrease the number of constructing forms. Further, since the form panels may be prevented from being exposed to the exterior upon performing back filling of the foundation, operations for forming finishing mortar to the form panels may be omitted.
The ultra thin-type form panel of a third preferred embodiment of the present invention is arranged in that the guiding portions for bending are formed to correspond to corner portions of lateral surfaces of a foundation of a building to be constructed. With this arrangement, by bending the panels along the guiding portions for bending, such that the form panels fit along the shapes of the lateral sides of the foundation, it is possible to construct the foundation in a single step even though the foundation may include a footing portion and a footing beam portion.
The ultra thin-type form panel of a fourth preferred embodiment of the present invention is arranged in that the guiding portions for bending are formed to be disposed downward of a ground surface when constructing a foundation for a building. With this arrangement, by bending portions of the form panels that are exposed to above the ground surface in a downward manner along the guiding portions for bending upon completion of the foundation, an advantage occurs in that no finishing mortar needs to be constructed to a portion of the form panel that is exposed to above the ground surface. Thus, foundation construction operations are remarkably saved.
The ultra thin-type form panel of a fifth preferred embodiment of the present invention is arranged in that clinch portions are formed to be successive in longitudinal directions to both lateral edges of the metallic plate in lateral directions. With this arrangement, it is possible to prevent lateral edges of form panels from becoming sharp thereby preventing inconveniences in which one may cut one's fingers at the time of construction so that safety of handling form panels may be improved.
The ultra thin-type form panel of a sixth preferred embodiment of the present invention is arranged so that engaging holes are formed on one side portion of the form panel in the lateral direction while engaging projecting portions are formed on the other side portion in the lateral direction for engaging the engaging projecting portions to the engaging holes such that adjoining form panels are made to be connectable. With this arrangement, adjoining form panels may be sequentially combined by fitting the fitting projecting portions to th
Callo Laura A.
Griffin & Szipl, P.C.
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