AU730384B2 - Extension of application of structural framing for concrete - Google Patents

Description

This invention is a extension of existing Patent No.69983/91 and involves the improvement of contact surface area of the paneling of the above invention to a concrete floor with starter rods protruding from the concrete floor. Steel rod spacers about 12mm. diameter are welded to the base of the frame such that in the upright condition the base of the frame does not cover the area of the concrete floor the wall panel is cemented to and only a few rod spacers obstruct contact surface which is very small compared to the whole base of the frame.

This has the further application of being applied to horizontal floors on the ground and in multi-story applications. The use of rod spacers between the top of a frame of a wall or footing to separate the top of the vertical frame and the one sided frame for the floor. This one sided frame can have the conventional spacing rods welded vertically so as to support a welded strip V. about 4mm. by 20mm. with the 20mm. side vertically up so as to give the correct thickness of the concrete horizontal floor such that a leveling beam is run over the top of the strip as the concrete is poured. For further paneling attached to 20 horizontal floor the rod spacers on wall panels which are vertically positioned so these wall panels can be welded on site without significant difficulty to a top RHS section spaced conventionally by spacing rods on the outer perimeter of the horizontal floor frame on the floor frame at any desired position above any bottom span of RHS still leaving room for the strip welded by spacing rods to the .base or floor frame.

(Summary of Invention). Invention involves the enhanced concrete flow during pouring around .bottom R.H.S. (Right angled hollow metal ,se'sections) contacting..floors..(nulti-story.-.or ground level only) 2 by lifting wall sections by spacing rods (metal rods) welded to base of vertical wall frame and this gap gives enhanced concrete contact to each floor level. Vertical thin metal strips as chair can also serve to do this with holes in the thin vertical strips (wide width in vertical plane) for better. concrete flow. Also vertical strips (wide width in vertical plane) are on top surface of horizontal floor frames to give better flow to top surface of floor and ease of leveling of floor concrete especially around protruding starters for walls at multi-story levels or ground floor level. Floor panels are joined wall panels or frames by spacing rods that are welded (preferably) to base and top of floor frame by spacing rods or chairs. (End of Summary of Invention) The wall frames attached by welding to top parallel spaced RHS section can also be welded to the strip on top of floor frame without significant on site difficulty or trouble.

The basic advantage of the strip which is welded vertically to the spacing rods welded to the horizontal floor frame is that with thin horizontal cross-section concrete flows around this section much i more easily and does not require prolonged low aggitation vibration as does concrete around the 20mm. by 20mm. RHS sections and constitutes less of a added time problem which is not a significant problem at any place except at the very top of the wall frame where a signif- I icant height of concrete above the RHS section does not exist. Alternatively, the strip can be just ordinary RHS section but slow vibration is then required of horizontal floor frames.

Another alternative to rod spacers between the ground concrete surface and the vertical wall frame is the use of a inserted chair which is basically a strip accross the width of the frame with a _-centre strip at 900 to this sloted over the strip and welded to the 3 spacing strip to give it vertical strength so the vertical wall frame can be placed over these chairs so that chairs have sufficent strength to support vertical wall panel. Chair is basically a by 3mm. strip accross width of frame with a centre strip of 25mm. by 3mm. slotted over 20 x 3mm. strip and welded to stand spacing strip vertically. Further to chairs for the base ground concrete to wall frame spacing is a basic chair for the spacing of wall frames from additional floor frames like second stories etc.. Here the strip accross the width is welded to two strips at 900 at each end which are at least 12mm. in from edge of concrete section so concrete can flow around with holes cut in strips so concrete can flow through also. Basically 20 x 3mm. strip is adequate for this style of chair.

The following diagram is a wall segment with rod spacers on base for increased contact and a floor segment horizontal and welded to top of wall segment with one parallel RHS section on top side S to which another wall segment on rod spacers welded to top piece of RHS and strips of horizontal floor segment. Item 1 is the vertical wall segment attached to concrete surface 3 by starter 4 with rod spacer 2 increasing surface contact with 5 being a layer of steel re-inforcement and 7 the spacing rod in the wall segment with 2a being rod spacer between the base wall segment and the floor frame "i and the vertical strip 6 is shown welded to spacing rods in turn welded to bottom frame of floor frame 8. Item 2b is the rod spacer welded to strip and RHS section of floor frame and 9 represents the 25 wall segment of the next level of the construction.

Figure 2a is of the chair for spacing the wall segment from the base ground concrete with 10 being the strip accross the width of concrete wall section to support and space the wall segment. Item 11 is the wider strip at 900 to this that supports the spacing strip 4 -4vertically and is slotted 12 over spacing strip and welded to spacing strip 13. Figure 2b is of a chair for spacing between wall segments or frames and additional floors or stories in the building. Item is the strip for spacing accross the width of the concrete section.

Items 11 a and lib are support strips of equal width welded at 900 to spacing strip 13a with holes in support strips 14 for concrete to flow through. Chairs can be welded to adjacent floor and wall sections.

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Claims (4)

1. Frames for concrete walls and floors in multi-story buildings comprising hollow right angled metal sections for the external attachment of formwork to vertical frames of R.H.S. includ- ing wall sections spaced by spacing rods; spacing rods spacing floor sections from wall section; floor frames permanently joined by preferably welding and containing re-inforcement layers; an upper-side of a floor frame supported from a lower frame by spacing rods welded to a thin metal vertical strip (wide width of strip in vertical plane) and bottom R.H.S. frame of floor frame; additional wall frames of additional levels are welded to upper-side of multi- level floor frame by spacing rods welded to a base frame of floor frame R.H.S. sections; additional wall frames and an upper-side of multi-level floor frame at an outside part of a R.H.S. of multi-level 15 floor frame and inner part supportedby vertical thin metal strips welded to spacing rods joining multi-level floor frames and wall frames.

2. Frames for concrete walls and floors in multi-story buildings as claimed in claim 1 including floor sections or frames having a 20 strip on an upper part of the frame of floor for easier pouring and concrete working during pouring and leveling instead of R.H.S. part for top of floor frame.

3. Frames for concrete walls and floors in multi-story buildings as claimed in claim 1 with bar chairs replacing spacing rods or segments for spacing that are welded to adjacent floor or wall segments of frames being a strip with one or more supprt strips at 900 to this being welded to a spacing strip and in a near edge part of frame section, holes are cut in support strips for concrete 4,t tflow through. -6

4. The Frames for concrete walls and floors in multi-story buildings substaintially as herein described with reference to accompanying drawings. GEORGE ANTHONY CONTOLEON 18TH.,DEGEMBER,2000, APPL ICANT DATE 00.00