Prefabricated movement joint system for concrete floors

Abstract

The invention relates to a prefabricated movement joint system with top edge rails providing protection for the concrete floor slab edges. The top edge rails may have a plurality of anchors to embed in the concrete and position the system, which are formed from the parent steel of the rail and not for example welded on. When the top edge rails are joined back to back with the possible use of yieldable fixings they clamp and hold in position possible a nylon or other plastic shaped extrusion and the divider plate thus comprising the whole of the assembled system.

1 . A prefabricated movement joint system for a concrete floor slab arrangement, wherein the prefabricated movement joint system is configured to be arranged in a joint to be formed between a first concrete floor slab and a second concrete floor slab in the concrete floor slab arrangement, the prefabricated movement joint system comprising
 a first top edge rail of metal or other material for providing edge protection in two planes for a first upper edge of the first concrete floor slab in the joint to be formed between the first concrete floor slab and the second concrete floor slab in the concrete floor slab arrangement   a second top edge rail of metal or other material for providing edge protection in two planes for a second upper edge of the second concrete floor slab in the joint to be formed between the first concrete floor slab and the second concrete floor slab in the concrete floor slab arrangement, and   a divider plate of metal or other material to be arranged in the joint to be formed at least partly between the first concrete floor slab and the second concrete floor slab in the concrete floor slab arrangement and at least partly between the first two top edge rail and the second top edge rail,   wherein   the first top edge rail of the prefabricated movement joint system comprises a first rail portion and a second rail portion, wherein the first rail portion of the first top edge rail is to be arranged essentially parallel with a top face of the first concrete floor slab, and wherein the second rail portion of the first top edge rail is to be arranged essentially parallel with a joint face facing the joint to be formed between the first concrete floor slab and the second concrete floor slab,   the first rail portion is provided in an essentially right angle in relation to the second edge rail portion so that the first top edge rail has an essentially L-shaped cross section form,   the first top edge rail has a plurality of first anchors to be cast into concrete of the first concrete floor slab to anchor the first top edge rail in the first concrete floor slab,   at least one first anchor of said plurality of first anchors has been formed by cutting and plastically deforming the material forming the second rail portion of the first top edge rail so that said at least one first anchor is an integral part of the second rail portion of the first top edge rail and consist of material that has been used forming the second rail portion of the first top edge rail,   the first rail portion of the first top edge rail is in the form of an elongated flat sheet member having uniform thickness,   the second rail portion of the first top edge rail is in the form of an elongated flat sheet member having uniform thickness,   the thickness of the first rail portion of the first top edge corresponding to the thickness of the second rail portion of the first top edge rail,   the first top edge rail have a plurality of first anchors to be cast into concrete of the first concrete floor slab to anchor the first top edge rail in the first concrete floor slab,   at least one first anchor of said plurality of first anchors has been formed by cutting and plastically deforming material forming the second rail portion of the first top edge rail so that said at least one first anchor is an integral part of the second rail portion of the first top edge rail and consist of material that has been used forming the second rail portion of the first top edge rail, and so that the second rail portion of the first top edge rail has a first opening through the second rail portion of the first top edge rail at the location said at least one first anchor has been formed of material forming the second rail portion of the first top edge rail, and   said at least one first anchor has an at least partly teethed side edge such as an at least partly saw-toothed side edge.   
     
     
         2 . The prefabricated movement joint system according to  claim 1 , wherein
 the dimensions and the shape of the first opening the in second rail portion of the first top edge rail corresponds at least partly to the dimensions and the shape of said at least one first anchor.   
     
     
         3 . The prefabricated movement joint system according to  claim 1 , wherein
 the dimensions and the shape of the first opening the in second rail portion of the first top edge rail corresponds essentially to the dimensions and the shape of said at least one first anchor.   
     
     
         4 . The prefabricated movement joint system according to  claim 1 , wherein
 said at least one first anchor having an elongated form, and   said at least one first anchor having a thickness corresponding to the thickness of the second rail portion of the first top edge rail.   
     
     
         5 . The prefabricated movement joint system according to  claim 1 , wherein
 the first rail portion of the first top edge rail being connected with the second rail portion of the first top edge rail by means of a first curved portion of the first top edge rail, and   the thickness of the first curved portion of the first top edge rail corresponding to the thickness of the first rail portion of the first top edge rail and to the thickness of the second rail portion of the first top edge rail.   
     
     
         6 . The prefabricated movement joint system according to  claim 1 , wherein
 the second top edge rail of the prefabricated movement joint system comprise a first rail portion and a second rail portion, wherein the first rail portion of the second top edge rail is to be arranged essentially parallel with a top face of the second concrete floor slab, and wherein the second rail portion of the second top edge rail is to be arranged essentially parallel with a joint face facing the joint to be formed between the first concrete floor slab and the second concrete floor slab, and   the first rail portion is provided in an essentially right angle in relation to the second rail portion so that the second top edge rail has an essentially L-shaped cross section form.   
     
     
         7 . The prefabricated movement joint system according to  claim 6 , wherein
 the second top edge rail have a plurality of second anchors to be cast into concrete of the second concrete floor slab and to anchor the second top edge rail in the second concrete floor slab, and   at least one second anchor of said plurality of second anchors has been formed by cutting and plastically deforming the material forming the second rail portion of the second top edge rail so that said at least one second anchor is an integral part of the second rail portion of the second top edge rail and consist of material that has been used forming the second rail portion of the second top edge rail ( 3   b ).   
     
     
         8 . The prefabricated movement joint system according to  claim 7 , wherein
 the first rail portion of the second top edge rail is in the form of an elongated flat sheet member having uniform thickness,   the second rail portion of the second top edge rail is in the form of an elongated flat sheet member having uniform thickness,   the thickness of the first rail portion of the second top edge rail corresponding to the thickness of the second rail portion of the second top edge rail,   the second top edge rail have a plurality of second anchors to be cast into concrete of the second concrete floor slab to anchor the second top edge rail in the second concrete floor slab, and   at least one second anchor of said plurality of second anchors has been formed by cutting and plastically deforming material forming the second rail portion of the second top edge rail so that said at least one second anchor is an integral part of the second rail portion of the second top edge rail and consist of material that has been used forming the second rail portion of the second top edge rail, and so that the second rail portion of the second top edge rail has a second opening through the second rail portion of the second top edge rail at the location said at least one second anchor has been formed of material forming the second rail portion of the second top edge rail.   
     
     
         9 . The prefabricated movement joint system according to  claim 8 , wherein
 the dimensions and the shape of the second opening the in second rail portion of the second top edge rail corresponds at least partly to the dimensions and the shape of said at least one second anchor.   
     
     
         10 . The prefabricated movement joint system according to  claim 8 , wherein
 the dimensions and the shape of the second opening the in second rail portion of the second top edge rail corresponds essentially to the dimensions and the shape of said at least one second anchor.   
     
     
         11 . The prefabricated movement joint system according to  claim 8 , wherein
 said at least one second anchor having an elongated form, and   said at least one second anchor having a thickness corresponding to the thickness of the second rail portion of the second top edge rail.   
     
     
         12 . The prefabricated movement joint system according to  claim 8 , wherein said at least one second anchor having an at least partly teethed side edge such as an at least partly saw-toothed side edge. 
     
     
         13 . The prefabricated movement joint system according to  claim 8 , wherein
 the first rail portion of the second top edge rail being connected with the second rail portion of the second top edge rail by means of a second curved portion of the second top edge rail.   the thickness of the second curved portion of the second top edge rail corresponding to the thickness of the first rail portion of the second top edge rail and to the thickness of the second rail portion of the second top edge fail rail.   
     
     
         14 . The prefabricated movement joint system according to  claim 1 , wherein at least one of the first top edge rail and the second top edge rail have a plurality of second apertures to suit yieldable fixings and height adjustment jacks. 
     
     
         15 . The prefabricated movement joint system according to  claim 1 , wherein comprising a plurality of first apertures for receiving low tensile yieldable fixings for holding the first top edge rail and the second top edge rail in position with respect to each other. 
     
     
         16 . The prefabricated movement joint system according to  claim 15 , wherein the yieldable fixings being variable to suit the strength and design of the concrete floor slabs. 
     
     
         17 . The prefabricated movement joint system according to  claim 1 , wherein comprising a divider plate in the form of a height adjustable divider plate, which is lockable into position between the first top edge rail and the second top edge rail. 
     
     
         18 . The prefabricated movement joint system according to  claim 1 , wherein the divider plate have a plurality of shaped apertures to accommodate dowels or corresponding load transfer systems arranged to transfer loads between the first concrete floor slab and the second concrete floor slab. 
     
     
         19 . The prefabricated movement joint system according to  claim 1 , wherein the divider plate having a plurality of embossed or raised ridges for the purpose of strengthening the divider plate. 
     
     
         20 . The prefabricated movement joint system according to  claim 1 , wherein comprising an extrusion of a nylon or similar plastic type material, shaped to suit a curved depression between the first top edge rail and the second top edge rail. 
     
     
         21 . The prefabricated movement joint system according to  claim 20 , herein the extrusion can be clamped into position between the first top edge rail and the second top edge rail, thereby preventing detritus from filling the depression and assisting in the smooth transition of wheeled traffic across the joint. 
     
     
         22 . The prefabricated movement joint system according to  claim 1 , wherein at least one of the first top edge rail and the second top edge rail comprises a plurality of second apertures for receiving height adjustment jacks or other similar accessories. 
     
     
         23 . The prefabricated movement joint system according to  claim 1 , wherein can be manufactured in discrete lengths and coupled together to provide the total desired length of joint. 
     
     
         24 . The prefabricated movement joint system according to  claim 1 , wherein can be supplied for use either fully assembled or in Kit Form, for assembly by others.