GB2046341A - Method of and forms for moulding concrete partition walls - Google Patents

Abstract

A method of and forms for moulding concrete partition walls is disclosed which do not require external supporting framework for the forms. The forms are constructed as a pair of spaced opposed panel walls each composed of panel members PA disposed in side-by- side relationship and supported between upper and lower floor members SI, SS of a structure, the effective height of each panel member being extended by an associated L-shaped angle member AM engageable with and adjustable relative to the associated panel member to bear against the upper floor member. The panel members are engaged between the upper and lower floor members and concrete is poured into the space between the opposed panel walls. Tension members AL are provided extending across the space between opposed panel members and engaged with the panel members to retain the panel members in spaced relationship against the weight of poured concrete. The ends of the space are closed by edge panels PE dimensioned to fit between opposed panel members which are urged towards each other by clamping means MO to retain the edge panels in position by frictional engagement, the vertical edges of the edge panels being preferably covered with a material having a high coefficient of friction. <IMAGE>

Description

SPECIFICATION Method of and forms for moulding concrete partition walls This invention relates to a method of and forms for moulding concrete partition walls and is particularly concerned with producing such partition walls between the upper and lower floor members of a structure, i.e. between the floor members of one floor of the structure and the floor members of the next adjacent higher floor of the structure, It is known to mould partition walls by means of forms composed of spaced opposed walls made from panel members of wood or metal, an external framework being required to support the panel members and hold them in the desired configuration. Gernally the form is supported on the lower floor and concrete is poured into the space between the opposed walls before the upper floor is erected or constructed.

The requirement of the framework in the known arrangement is a disadvantage as it increases the cost of labour and materials.

It is an object of the present invention to provide an improved method of and form for moulding concrete partition walls in which the disadvantage referred to is materially reduced if not entirely obviated.

According to the present invention there is provided a method of moulding a concrete partition wall between upper and lower floor members of a structure which comprises erecting two spaced opposed panel walls each composed of a plurality of panel member disposed in side-by side relationship and supported on the lower floor member, extending the effective height of each panel member by an associated adjustable L-shaped angle member en- gageable with and adjustable relative to the associated panel member to bear against the upper floor member to hold each panel member between the upper and lower floor members and pouring concrete into the space between the panel walls.

The invention also provides a form for moulding a concrete partition wall between upper and lower floor members comprising two spaced opposed panel walls each composed of a plurality of panel members disposed in side-by-side relationship for support on the lower floor member, and an L-shaped angle member associated with each panel member and adjustable relative thereto to extend the effective height of the associated panel member whereby each panel member may be held between the upper and lower floor members.

One embodiment of the present invention will now be described by way of example, reference being made to the accompanying drawings in which: Figure l is an elevational view of a form according to the invention with parts omitted for clarity, Figure 2 is an exploded elevational view of a panel member of the form of Figure 1 with associated parts, Figure 3 is an exploded elevational view of an edge panel member of the form of Figure 1 with associated parts; Figure 4 is a fragmentary sectional view taken on the line IV - IV of Figure 5, Figure 5 is a fragmentary sectional view taken on the line V - V of Figure 4, Figure 6 is a fragmentary sectional view taken on the line Vl-VI of Figure 1, and Figure 7 is a fragmentary sectional view taken on the line VII - VII of Figure 1.

The form of this example comprises two spaced opposed panel walls each composed of three similar rectangular panel members disposed in abutting side-by-side relation. One of the panel walls is shown in elevation in Figure 1 and is composed of panel members PA and the corresponding opposed panel members of the opposed panel wall are identified as AP (Figures 6 and 7). The panel members PA and AP are of uniform height and width and are supported on the surface ES of the floor SI with their major dimension extending upwardly towards the lower surface of floor member IN of the next adjacent upper floor SS.Each panel member PA and AP support a metal bar BM on each upper edge and the height of the panel member together with the thickness of this bar is denoted as HA which is less than the distance between the surface ES of the floor SI and the lower surface IN of the upper floor SS (or the lower surface of a support member for the upper floor) by a distance IF. The distance IF is not large and accommodates any variation which may occur in practice in the distances between adjacent floors of the structure.

The panel members AP and PA are made of wood or of a synthetic material and the panel walls are spaced apart by a distance SP (Figure 7) which is the thickness of the partition wall to be constructed.

An L-shaped angle member AM is associated with each panel member and has a length corresponding to the width of the associated panel member. One flange, i.e. the upper flange, of the angle member AM has a width corresponding to the thickness of the associated panel and the other flange depends downwardly by a distance greater than the distance IF to engage a face of the panel member. Each angle member AM has two rigidly connected downwardly depending guide stems CM, MC, which pass through openings SD, DS in the associated bar BM and enter blind bores BB in the upper edge of the associated panel member.A threaded bolt BU is threadedly engaged in a threaded bore TB through the bar BM with its head in the space between the upper edge of the panel member and the upper flange of the angle member AM so that, by screwing the bolt BU into or out of the bar BM, the head of the bolt BU can be raised or lowered and can be raised to engage the underside IN of the upper flange of the angle member AM to force it against the under-surface of the upper floor SS thereby wedging the panel member between the upper and lower floors with the distance IF between the upper face of the bar BM and the undersurface of the upper floor covered by the downwardly depending flage of the angle member AM.

Each end of the space between the panel walls is closed by an edge panel PE of a height correspond ing to that of the panel members AP, PA and a width corresponding to thickness SP of the partition to be moulded so that it fits closely between the opposed panel walls. Associated with each edge panel PE is a bar BM1 corresponding to the bar BM, an angle member AM1 corresponding to the angle member AM with depending guide stems CM1, MC1 and a bolt BM1. The edge panel members PE are wedged between the upper surface ES of the lower floor and the lower surface IN of the upper floor in a manner similar to that described with reference to the panels PA, AP as will be understood.

As the width of the partition wall to be produced it not necessarily a multiple of the width of the partion members, PA, AP, it will be appreciated that the edge panels PE are not necessarily disposed right at the edge of the panel walls as shown in Figure 7 but can be disposed inwardly of that edge as required. To facilitate and improve the clamping of the edge panels PE between opposed panel members PA, AP, the vertical edges of the edge panels are provided with a coating or covering GU, UG, of a fraction material having a high coefficient of friction.The opposed end panels PA, AP are urged towards each other to engage the vertical edges of the edge panels PE by clamping means MO (Figures 1 and 7) which comprises a U-shaped element BR which embraces the ends of the panel walls and has inwardly directed arms extending towards the external faces of the opposed end panel members and at least one of which carries a cam member which is angularly adjustable to bear against the external face of the end panel member to which it is presented. The cam means in this example comprises a fixed cam CF and a rotatable cam CA, these cams being constructed as a cylinder severed along a plane inclined to the axis of the inwardly directed arm at an angle other than 90" so that rotation of the cam AC relative to the fixed cam CF displaces it in the direction of length of the inwardly directed arm.A stop ring RI is located in a recess in the end face of the rotatable cam CF and is secured to the inwardly directed arm to retain the cam. In this example a corresponding cam means is provided on the other inwardly directed arm and the fixed cam is referenced FC, the rotatable cam AC and the retaining ring IR. It will be aparentthat clamping of the opposed end panel members against the edge panel EP disposed therebetween can be effected simply by turning the bridging part of the U-shaped element MO up or down to rotate the fixed cams CF and FC and displace the rotatable cams CA, AC.

The vertical abutting edges of the panel members PA, AP which meet along a separation line are formed with notches SE to accommodate the end portions of tension spacer plates TI operable to retain the panel walls in spaced relationship and to supportthem against the outward pressure of poured concrete and any vibration. The spacer plates TI extend across the space between the opposed panel walls and their end portions extend and project through the notches SE and through apertures formed in the base of a vertically extending U-shaped bar which covers the separation line between adjacent panel members. A separate bar covers each separation line and the bars covering the separation line between adjacent panel members PA ae denoted by the reference PR and bars covering the separation line between adjacent panel members AP are denoted by the reference RP.The projecting end portions of the tension spacer plates TI are apertured and wedges CU, UC are forced into these apertures thereby retaining the tension spacer plates TI. The tension spacer plates TI are formed intermediate their length with folded wings or vertically extending grooves AL which may be used to locate and retain panels P of sound or heat insulating material to be embedded in the concrete partition wall.

A hopper TR (Figure 1) is provide and opens through an opening AE in the upper floor SS to the space between the opposed panel walls of the form.

Concrete is poured through the hopper into this space and may be vibrated and is left to set to form the desired concrete partition wall. It will be appreciated that the upper floor SS need not be completely constructed at the time the partition wall is cast as the wedging effect forthe form can be achieved between the lower floor and structural support membersforthe upper floor.

It will also be appreciated that the form described does not require additional external supporting framework and that the panel members may be used many times in the construction of forms as they are not damaged by nails or rivets. Also, it is possible to incorporate into the space between the panel walls sound orthermally insulating plates as well as electric cable and hydraulic pipes which become embedded in the partition wall when the concrete is cast. It will be understood that the panel walls may be constructed of any number of panel members PA and AP to suit requirements.

Claims (15)

1. A method of moulding a concrete partition wall between upper and lower floor members of a structure which comprises erecting two spaced opposed panel walls each composed of a plurality of panel members disposed in side-by-side relationship and supported on the lower floor member, extending the effective height of each panel member by an associated adjustable L-shaped angle member engageable with and adjustable relative to the associated panel member to bear against the upper floor member to hold each panel member between the upper and lowerfloor members and pouring concrete into the space between the panel walls.

2. A method according to Claim 1 including the step of passing a tension member between opposed panel members to extend externally of each side of the space therebetween and engaging the externally extending parts of the tension member by wedge means to retain the panel walls in spaced relationship.

3. A method according to Claim 1 or 2 including the step of defining an end wall of the space between the panel walls by an end panel disposed between panel members and frictionally engaged therewith.

4. A method of moulding a concrete partition wall substantially as herein described with reference to the accompanying drawings.

5. A form for moulding a concrete partition wall between upper and lower floor members comprising two spaced opposed panel walls each composed of a plurality of panel members disposed in side-byside relationship for support on the lower floor member, and an L-shaped angle member associated with each panel member and adjustable relative thereto to extend the effective height of the associated panel member whereby each panel member may be held between the upper and lower floor members.

6. Aform according to Claim 5 in which each angle member carries guide means engageable with the associated panel member and expandable means is provided engageable between the panel member and the associated angle member to displace the angle member relative to the panel member.

7. Aform according to Claim 6 in which the guide means comprises at least one stem carried by the angle member and extending into a bore in the upper edge of the associated panel member and the expandable means comprises a threaded member extending from said upper edge and engageable with the associated angle member.

8. A form according to Claim 7 in which the threaded member threadedly engages a bar supported on said upper edge of the panel member.

9. A form according to any one of Claims 5 to 8 in which a tension member extends across the space between each pair of opposed panel members and externally of the space and wedge means engages the externally extending parts of the tension member to retain the panel members in spaced relationship.

10. Aform according to Claim 9 in which the tension member extends through the separation line of adjacent panels and through a U-shaped bar covering the separation line, and the wedge means passes through apertures in the externally extending parts of the tension member to engage the U-shaped bar.

11. Aform according to any one of claims 5 to 10 in which at least one end of the space between the opposed panel walls is defined by an edge panel dimensioned to be received between opposed panel members and having edges engaged with the opposed panel members and covered with a frictional material.

12. A form according to any one of Claims 5 to 11 including clamping means operable to engage the opposed end panel members of the panel walls the clamping means comprising a U-shaped element operable to embrace the ends of the panel walls and having inwardly directed arms extending towards the external faces of the opposed end panel members, at least one inwardly directed arm carrying a cam member angularly adjustable to bear against the external face of the end panel member to which it is presented.

13. Aform according to Claim 12 in which the cam means comprises a fixed cam carried on said one inwardly directed arm and a rotatable cam engageable with the fixed cam for displacement relative thereto in the direction of length of said one arm.

14. Aform according to any one of Claims 5 to 13 including means opening to the space between the panel walls for the pouring of concrete into the space.

15. A form for moulding a concrete partition wall constructed, arranged and adapted to operate substantially as herein described with reference to the accompanying drawings.