GB2191520A

GB2191520A - Wall ties for added walls

Info

Publication number: GB2191520A
Application number: GB08713626A
Authority: GB
Inventors: David Kenneth Cusick; John Lamont
Original assignee: C & T Metals
Current assignee: C & T Metals
Priority date: 1986-06-11
Filing date: 1987-06-11
Publication date: 1987-12-16
Anticipated expiration: 2007-06-11
Also published as: EP0249478A3; GB2191520B; GB8713626D0; EP0249478A2; GB8614185D0

Abstract

A wall fastening (1) system for fastening a second wall (3, Fig. 1) to a first existing wall (2, Fig. 1) comprises an elongate rail 4 fastened upright to said first wall (2). A plurality of wall-tie carrying members 6 for wall ties 7 each has a flange 9 engageable with a slot (8) on the rail 4 whereby the carrying members (6) are positionable spaced apart on the rail 4 as a vertical array. The spaced carrying members 6 are firmly secured to the first wall 2 e.g. by wall screws, and the spacing is such that each wall tie carried by the respective carrying member 6 lies between two successive brick courses 6 of the second wall 3. The above system provides a saving in material and also a fastening system of increased rigidity. <IMAGE>

Description

GB 2 191 520 A 1

SPECIFICATION and including retaining means to receive a locating

Wall Fastening Method and Apparatus member on each wall-tie carrying member whereby the wall-tie carrying members can be positioned on The present invention relates to a wall fastening said positioning member at desired vertical system to facilitate the building of a second wall 70 spacings relative to each other.

onto a first or existing wall. Preferably the elongate positioning member Wall tie devices are known comprising an comprises a rail device, and the carrying members elongate metal section adapted for vertical are preferably slidably movable on the elongate securement eg. by wall screws to an existing wall positioning member.

and the metal section includes at least one side 75 Preferably the carrying members are adapted for flange facilitating alignment of a second wall. UK securement to the existing wall. Each tie element Patent 1604941 describes such a wall tie device. Tie can comprise an L- shaped member, the carrying elements are carried by the metal section so as to be members including slot means to receive a first limb located between brick (or block) courses of the of the L-shaped tie element while the other limb of second wall whereby suitable keying can be 80 the element is located between courses of the provided between the walls. Since irregularities can second wall.

arise in the position of the brick courses of the Preferably the carrying members are slidably second wall, provision for some vertical retained on the elongate positioning member by adjustability of the tie elements has been included in slot-and-flange means.

the elongate section. For example published UK 85 Preferably said other limb of the L-shaped tie Patent Applications 2154258A and 2154260A element is of flanged form. In the preferred describe double-limbed tie elements with the limbs embodiment the slot means of the carrying member slidably received in vertical slots in the elongate receives the tie elements first limb so that the limb is section. positioned over a hole on the member, said hole However, the previous adjustment provisions for 90 serving for through- passage of a screw to secure the the tie elements have not been completely adequate carrying member to said existing wail.

andlor have resulted in a tie mounting which has not Embodiments of the present invention will now been structurally satisfactory. A further be described by way of example with reference to disadvantage of previous wall tie systems has been the accompanying drawings wherein:- that they have not been economic in use of material 95 Fig. 1 shows a schematic side view of the and have been relatively heavy. construction of a second wall onto an existing wall It is an object of the present invention to obviate using a wall fastening system in accordance with or mitigate these disadvantages. the present invention; According to one aspect of the present invention Fig. 2 shows an "exploded" isometric view of the there is provided a method of installing a wall 100 wall fastening system shown in Fig. 1; fastening system on a first wall to facilitate the Fig. 3 is a plan view of the fastening system of Fig.

building of a second wall onto said first wall, said 2; second wall being formed by courses of building Fig. 4 shows a detail of the fastening system in bricks or blocks with cementing material between side view and embodying clip means for retainment said courses, said method comprising fixing upright 105 of parts of the system; attachment means for wall tie elements to said first Fig. 5 shows a similar view to Fig. 4 but in the wall and mounting said wall tie elements on the locked condition with the system parts clipped attachment means so that each tie element is together; located between two successive courses of the Fig. 6 shows a sectional end view of the system second wall, characterised in that a plurality of 110 through section X-X in Fig. 3 but including a separate individual wall tie attachment members modification.

are provided, in that an elongate positioning Fig. 7 shows a front view of a modified tie carrying member is located upright on the first wall, and in member in accordance with the present invention; that said wall tie attachment members are and positioned on said elongate positioning member at 115 Fig. 8 shows a sectional end view (corresponding desired vertical spacings relative to each other and to M-M of Fig. 3) of a further modified form of the secured to said first wall at said spacings. wall fastening system.

According to another aspect of the present Referring to Figs. 1 to 3 of the drawings, a wall invention there is provided wall fastening apparatus fastening system 1 is shown facilitating the building to facilitate the building of a second wall onto a first 120 of a second wall 3 onto an existing wall 2, and (as existing wall, said apparatus comprising upright shown in Fig. 1) particularly for a second wall 3 attachment means adapted for securement to said extending at right angles to the first. The wall first wall, and carrying means on said attachment fastening system 1 comprises an elongate means for wall ties whereby each wall tie can be positioning member 4 providing an edge flange 5, a positioned between two successive brick or block 125 series of wall-tie carrying members 6 (only one courses of said second wall, characterised in that shown in Fig. 2) which are fitted on the elongate there are provided a plurality of separate individual member 4, and wall tie elements 7 carried by the wall-tie carrying members for wall ties, and an carrying members 6. The parts of the system 1 are of elongate positioning member adapted for metal plate construction, preferably of mild or securement in an upright position on said first wall 130 stainless steel, and can be formed by metal 2 GB 2 191 520 A 2 stamping. member 6 is located in position as shown in Fig. 1 The flange 5 of member 4 is bent over to form a prior to building the course so that the limbs 18 of slot 8 receiving a flange 9 of each carrying member the elements 7 will be at the top level of the course 6; the elongate member 4 being fastened to the wall (or slightly above) and the element 6 is secured in 2 bywall screws 10 passing through holes 11 on the 70 this position on wall 2 by means of fastening screws member 4. Member 4 includes a reinforcing ridge inserted through the screw apertures 28. Further 12. The carrying member 6 is of corrugated plate carrying members 6 are fitted to the member 4 and form and raised corrugations thereof provide screwed to the wall 2 to form a vertical array of apertured land portions 13 for wall screws (not members 6 with selected vertical spacings S,, S2 etc.

shown) to secure the member 6 to the wall 2. Strap 75 and each member 64carries tie elements 7 located portions 14,15 standing proud of lands 13 to between successive courses of the wall 3.

provide slots 16,17 to receive the wall tie elements Alternatively, the vertical array of members 6 can 7. Each element 7 is of L-shaped form and is be fitted to the positioning member 4 at the desired stamped out so that the longer limb 18 has side vertical spacings S,, S2 etc. and secured to the wall 2 flanges 19, while the shorter limb 20 of element 7 is 80 prior to the formation of the wall 3. The spacings S, received in slots 16,17 so as to cover the recessed S2 etc would normally be uniform eg. 300 mm. As screw aperture 28 in land 13 (two elements 7 being seen in Fig. 3, the edge flange 5 serves to align the provided for carrying member 6). The wall tie 7 is brick courses. The flange 9 located in slot 8 has consequently firmly gripped between the land 13 sufficient width to prevent tilting of the element 6 so and the strap portions 14,15 such that any free 85 that the elements 6 will be set precisely normal to (pivotal) movement of the tie 7 in the plane of the member 4 and hence horizontal. Similarly tie land 13 or in a plane perpendicular thereto can be elements 7 are restrained from pivotting by slots 16, substantially precluded. Tongue apertures 21 are 17 and this provides satisfactory structural rigidity present on each element 7 for through-passage of and hence improved keying between the walls 2,3.

mortar cementthereby assisting the keying action. 90 As will be noted the carrying members 6 are Further it is preferable that each carrying member symmetrical about a horizontal (longitudinal) axis 6 is movable into a locked condition on the elongate so that the members 6 suffice without alteration for positioning member 4. Thus, referring to Figs. 4 and left hand or right hand positioning of the elongate 5, forthis end the positioning member4 can have a member 4, the flange 9 being placed atthe left or concave channel 25 while each carrying member 6 95 right hand side simply by rotating the member 6.

has a corresponding mating channel 26, thpwidth The flange 9 can be provided with a sideways Wp of the channel 25 being slightly less than the directed tongue 9A to improve the securement of width Wc of the channel 26, so that the channel 25 the flange 9 in the slot 8.

can serve as a clipfor the channel 26. Fig. 4 shows As will be appreciated, the above wall fastening the position of initial fitting of a carrying member 6 100 system of the present invention provides an infinite onto the positioning member 4. In this position the vertical adjustment of the wall tie elements 7 member 6 is inclined relative to the member 4 with relative to the member 4 so that all irregularities in the flange 9 partially in the slot 8, and in this position course levels can be compensated for. Further in the the member 6 is capable of a sliding guided present invention, the wall tie elements are carried movement on the positioning member 4. To lock the 105 by separate carrying members rather than by a member 6 in the positioning member 4, a single integral elongate metal section as in previous downward force F is applied to the member 6 to systems and this enables substantial reduction in cause the channel 26 to clip into channel 25 as the amount of material required for the construction shown in Fig. 5, held by the side walls 25A, 25B of of the wall tie since the elongate member 4 can be the channel 25. 110 relatively narrow. Additionally, the specific and firm A further preferred feature is thatthe limb 18 of securement of each carrying member 6 to the wall 2 the tie element 7 is located slightly above the top by means of the fastening screws give greatly edge of the relevant carrying member 6 and to improved strength to the fastening system in achieve this requirement a stop element 27 is comparison to systems using a single integral provided on the limb 20 of tie element7 as shown in 115 elongate tie attachment member which maybe Fig. 6 and engages an outer edge 13A of the land 13 secured to the base wall only at random positions.

to limit downward movement of the tie element 7. The present fastening system 1 can be With this arrangement, the top of a brick or block conveniently used for the building of "second" can be positioned level with the top edge of the walls having substantially different brick or block carrying member 6 as shown so that a small space is 120 sizes since only the tie carrying members 6 need be present between the bricks and the limb 18 for substituted, all other items being common for all cement or mortar 3A bonding the brick courses of brick or block sizes.

wall 3. The length L of the element 6 determines the brick In the constructions of the second wall 3 onto size to be catered for, specifically for brick (or block) existing wall 2, the elongate member positioning 125 widths in the range B1 to B2. By way of example the member 4 is firstly located in a vertical position on following sizes are indicated wall 2 eg. using a plumb line, and the member 4 is secured to the wall 2 by wall screws 10. For the L for brick size 131-132 formation of the various courses (ie. A, B, C of Fig. 1) 120 mm 125-170 mm of the second wall 3, the respective carrying 130 170 mm 190-250 mm 3 GB 2 191 520 A 3 Where the brick or wall width isto be relatively and an elongate positioning member adapted for small ie. less than 100 mm, the tie carrying member securement in an upright position on said first wall 6A shown in Fig. 7 will be preferred. As can be seen, and including retaining means to receive a locating element 6A is retained by only a single screw and - - member on each wall- tie carrying member whereby only a single set of slots 16117 is provided for a.-76 the wall-tie carrying members can be positioned on single tie element 7. said positioning member at desired vertical Modifications are of course possible. Thus the spacings relative to each other.

mounting of the tie elements 7 on the carrying 7. Apparatus as claimed in claim 6, wherein the members 6 could be achieved in some alternative elongate positioning member is in the form of a rail manner. For example, referring to Fig. 8, the tie 75 having flange means defining an elongate recess to element 7 could be provided with a downwardly receive a co-operating flange on each wall-tie projecting finger 29 at the upper end which clips carrying member.

over an extended portion of the land 13 as shown, 8. Apparatus as claimed in claim 7, wherein each one or both of the strap portions 14,15 being wall-tie carrying member is positionable on the dispensed with. However, for improved securement 80 positioning member with the flange of the carrying it may be preferable to couple the tie elements 7 to member located in said recess so that the carrying the carrying member 6 at or towards the bottom end member is slidably guidable on the positioning thereof for example, by means of a hook element 30 member.

on the member 6 engaging a slot 31 on the element 9. Apparatus as claimed in any one of claims 6 to 7, as shown, and for this arrangement the tie 85 8, wherein parts of said positioning member and element 7 could be symmetrical about a vertical axis said wall-tie carrying members define co-operating with similar retainment means at each end of the clip means whereby each wall-tie carrying member element 7 forfitment to the positioning member 4 can be moved to a locked position on said so that the elements 7 are still usable for left or right positioning member.

hand positioning of the member 4. 90 10. Apparatus as claimed in any one of claims 6 to 9, wherein each wall-tie carrying member includes

Claims

CLAIMS at least one hole for a screw serving to secure the

1. A method of installing a wall fastening system carrying member to said first wall.

on a firstwall to facilitatethe building of a second 11. Apparatus as claimed in claim 10, wherein said wall onto said first wall, said second wall being 95 hole is recessed.

formed by courses of building bricks or blocks with 12. Apparatus as claimed in any one of claims 6 to cementing material between said courses, said 11, wherein each wall tie comprises an L-shaped method comprising fixing upright attachment member, the carrying members including slot means forwall tie elements to said first wall and means to receive a first limb of the L-shaped tie mounting said wall tie elements on the attachment 100 member while the other limb of the L-shaped means so that each tie element is located between member is located between courses of the second two successive courses of the second wall, wherein wall.

there are provided a plurality of separate individual 13. Apparatus as claimed in any one of claims 6 to wall tie attachment members and an elongate 12, wherein step means are provided to position the positioning member located upright on the first 105 portion of the wall tie located between courses of wall, said wall tie attachment members being the second wall at a level above the top edge of the positioned on said elongate positioning member at wall-tie carrying member.

desired vertical spacings relative to each other and 14. Apparatus as claimed in claim 12, wherein secured to said first wall at said spacings. each wall-tie carrying member includes holding

2. A method as claimed in claim 1, wherein the 110 means which engages spaced apart portions of said wall tie attachment members are slidable on the first limb of the Lshaped member for firm location elongate positioning member to the relevant spaced of the wall tie in the carrying member.

positions. 15. Apparatus as claimed in claim 14 when

3. A method as claimed in claim 1 or 2, wherein dependent on claim 11, wherein a land is provided the wall tie attachment members are locked to said 115 at said recessed hole, and in that said holding elongate positioning member at the relevant spaced means comprises straps on either side of said land positions. and standing proud of the land whereby said one

4. A method as claimed in any one of the limb of the L-shaped member is gripped between preceding claims, wherein upright outwardly- said straps and the land with the recessed hole projecting flange means are provided for alignment 120 covered by said one limb.

of said courses of the second wall. 16. Apparatus as claimed in any one of claims 6 to

5. A method as claimed in any one of the 15, wherein each wall-tie carrying member preceding claims, wherein each wall tie attachment comprises a corrugated form metal stamping.

member is formed by a metal stamping. 17. Apparatus as claimed in any one of claims 6 to

6. Wall fastening apparatus to facilitate the 125 16, wherein each wall- tie carrying member is building of a second wall onto a first existing wall, symmetrical about an axis.

said apparatus comprising a plurality of separate 18. Apparatus as claimed in claim 7, wherein individual wall-tie carrying members for wall ties spring tongue means are provided to secure said co each of which wall tie is to be located between two operating flange in the recess.

successive brick or block courses of the second wall, 130 19. A method of installing a wall fastening system 4 GB 2 191 520 A 4 as claimed in claim 1 and substantially as 5 illustrated in Figs. 1 to 3 or these figures as modified hereinbefore described. by Figs. 415 or Figs. 6,7 or 8 of the accompanying 20. Wall fastening apparatus substantially as drawings.

hereinbefore described with reference to and as Printed for Her Majesty's Stationery Office by Courier Press, Leamington Spa, 12187. Demand No. 8991685. Published by the Patent Office, 25 Southampton Buildings, London, WC2A lAY, from which copies may be obtained.