Static structures (e.g. – buildings) – Installed screed or unit with specified feature retaining... – Position adjusting means
Patent
1989-11-21
1991-10-22
Chilcot, Jr., Richard E.
Static structures (e.g., buildings)
Installed screed or unit with specified feature retaining...
Position adjusting means
521266, 52678, 52687, E04C 316
Patent
active
050583484
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a method and an apparatus for use in connection with the casting and direct smoothing of single-course structural floors, and more specifically for forming a screed guide, i.e. a path for a screeding means, such as a vibrating screed or the like, at the locations where the walls of the following story are to be cast.
BACKGROUND OF THE INVENTION
When casting single-course structural floors, where the concrete is cast in a floor shuttering and is screeded or smoothed directly and forms the base for flooring, a specific screeding beam has to be positioned and levelled. This screeding beam acts as a support for the so called vibrating screed or vibrating beam finisher when screeding the concrete, and may be one of two different basic types, of which one has to be dismounted or removed after the casting while the other may remain in the structural floor, i.e. it is cast into the concrete.
When casting and direct smoothing a single-course structural floor in this manner it has up to now been necessary to provide such a screeding beam on each side of the location where the walls of the following story are to be cast, since the anchorage or protective reinforcement to be cast into these walls extends vertically upwardly from the floor shuttering and prevents the use of a common screeding beam for screeding or smoothing the structural floor on both sides of the location for the wall. The protruding anchorage or protective reinforcement creates a great problem also from another point of view, since it involves a fairly great accident risk, even if the protruding reinforcement bars are provided with protective knobs of plastic or the like.
When casting single-course structural floors in the traditional or conventional manner separate supports must also be provided for the top-layer reinforcement, and up to now these supports have been formed by bent reinforcement bars, so called "cats feet", which involves relatively time-consuming work. Using conventional technique it is moreover relatively complicated and time-consuming to adjust or adapt both the top-layer reinforcement and the screeding beams to the thickness of the structural floor in question.
Another disadvantage of the conventional technique resides in the fact that when the casting has to be interrupted temporarily, for instance to be resumed the following day, a special casting joint support or "stop support" has to be installed, which is time-consuming and involves additional costs.
OBJECT OF THE INVENTION
Accordingly, the object of the present invention is to provide a method and an apparatus of the aforementioned kind, by means of which the above discussed drawbacks of the prior art may be eliminated as far as possible.
According to the invention this object is accomplished by means of a method and an apparatus as described herein.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will be described in detail, with reference to the enclosed drawings, on which:
FIG. 1 is a perspective view of a portion of an apparatus according to the invention for forming a screed guide, and illustrates the screeding profile and the cover in a separated position,
FIG. 2 is an elevational view from above of the screeding profile with the cover removed,
FIG. 3 is an end view of the support for the apparatus,
FIG. 4 illustrates a spacing piece for a wall formwork,
FIG. 5 is a cross-section illustrating the apparatus according to the invention cast into a structural floor and supplemented with a weather covering,
FIG. 6 is an elevational view from above, schematically illustrating the use of the weather covering.
DETAILED DESCRIPTION OF THE INVENTION
As illustrated especially in FIG. 1, the apparatus according to the invention basically consists of a support frame 1 and a screeding profile 2 supported thereon. The support frame 1 (compare also with FIG. 3) consists of a plurality of yokes 3 generally having the shape of an inverted U. The yokes are provided at mutual distances from each other in a row and are connected by means of a
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Chilcot Jr. Richard E.
Watson Linda J.
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