Abstract:
The disclosure presents a composite concrete structure formwork which comprises stay in place fiberglass profiles and reinforcement to form various building and shelter structures. The structures include an interior container maintained at a set distance within an exterior container to form a void. The void is filled with wet concrete which is allowed to cure. All of the components in a preferred embodiment are formed of a fiberglass material.
Abstract:
The disclosure presents a composite conduit formwork structure which includes a cylindrical outer casing adapted to bond with a cylindrical inner casing which are maintained at a fixed distance apart by a plurality of radial stanchions. The inner casing and outer casing form an interior void which is filled with concrete during manufacture. The outer casing and inner casing remain in place to protect the structure once completed. A novel method of assembly is also provided whereby radial stanchions are rotated between the outer casing and inner casing. All of the components in a preferred embodiment are formed of a fiberglass material.
Abstract:
A housing component system having fiberglass resin forms secured in place with a binder such as cement. The forms may have a variety of forms and once secured with the cement will be strong avoiding the need for any reinforcement components such as reinforcing bar (rebars) of metal mesh.
Abstract:
Apparatus is provided for arch centering for slabs formed on prefabricated beams of reinforced or prestretched concrete, steel, wood, or the like, which includes elements of steel plate or another material having similar properties, constructed in a flat or arched form and with the dimensions that are required, which has four or more steel staples for its temporary support during its use, and two devices, one of which allows the staples to be slightly deformed in an elastic manner for their extraction and another for their leveling and coupling among themselves.
Abstract:
A modular panel which may be combined with others to constitute a mold for depositing concrete or the like is disclosed. Each modular panel is corrugated to have ridges and troughs which extend parallel to and alternating with each other. At least the troughs are provided with openings in the form of elongate slots with or without circular holes combined therewith such that the openings define nailing passages in alignment with those of another modular panel which is joined with that panel, with no regard to the relative position of the joined panels. An elastic transparent strip is adhered to the bottom of each trough to cover the openings while allowing nails to be driven therethrough.
Abstract:
A forming system for concrete floor and roof decks is provided having all parts standardized, separable and reuseable, including shoring, displacement domes or flat panels and half cradle and side panels, all constructed and related to enable quick virtually tool-free erection as well as removal for reuse. The displacement domes or flat panel forms are readily removable before the shoring if desired to reduce the between-use intervals. Convenient latch lock connections are provided for rapid erection and dismantling of components.
Abstract:
METHOD FOR FORMING CONCRETE BUILDINGS THAT HAVE NUMEROUS IDENTICAL PORTIONS, WHICH MINIMIZES THE SET-UP TIME FOR A GROUP OF FORMS, BY PERMITTING THE FORMS TO BE INDIVIDUALLY RELEASED FROM SET CONCRETE WHILE CONSTANTLY MAINTAINING THE POSITIONS OF THE FORMS ON A SUBFORM. THE METHOD INCLUDES THE USE OF SEVERAL FORMS WITH FLANGES THAT REST ON A SUBFORM, SEVERAL BOLTS FOR EACH FORM THAT PROJECT THROUGH FLANGES OF THE FORMS AND THROUGH HOLES IN THE SUBFORM, AND A SPRING FOR EACH BOLT TO URGE ITS LOWER END DOWNWARDLY WITH RESPECT TO THE SUBFORM. AFTER CONCRETE IS POURED ON THE FORMS AND PARTIALLY SETS, THE SUBFORM IS LOWERED A FEW INCHES EVEN THOUGH THE FORMS MAY REMAIN STUCK IN THE CONCRETE, AND THEN EACH FORM IS INDIVIDUALLY FREED FROM THE CONCRETE. AS EACH FORM IS FREED, THE BOLTS GUID IT DOWN TO ITS ORIGINAL POSITION ON THE SUBFORM. THE SUBFORM AND FORMS THEN CAN BE MOVED AS A UNIT TO A NEW LOCATION IN THE BUILDING WHERE ANOTHER IDENTICAL CONCRETE PORTION IS TO BE FORMED.
Abstract:
A retractable form for casting material, such as concrete, thereabout, has an elongate, substantially unitary structure including a pair of oppositely facing side legs connected together by an upper portion with the legs being movable relative to each other. The structure further includes first means coupled between the legs for setting them in a first position when the first means is in a first state, and for moving them out of the first position and toward each other, thereby retracting the form, when the first means is moved into a second state so that the form may be disengaged from material cast thereabout. The structure also includes second means coupled between the legs and cooperating with the first means for preventing movement of the legs relative to the upper portion when the first means is in the first state, the second means permitting movement of the legs out of the first position and toward each other when the first means is moved from the first state into the second state.
Abstract:
A pan-shaped structural concrete form wherein the top and each side of the pan is internally braced by a framework of metal tubes, some of which serve as hand holds for removal of the pan. In pans with flanges, the flanges are of flexible construction and are molded with a definite angle from the horizontal, so they become horizontal when the pan is turned upside down and pressed down by the weight of concrete. Other pans without flanges employ a lock-in rubber strip at the bottom to form a seal with the construction deck on which the pans are laid.