Two-part masonry tie

Details Two-part masonry tie Two-part masonry tie

1993-11-26

1995-10-10

Friedman, Carl D.

Static structures (e.g., buildings)

Assembled in situ-type anchor or tie

Sheet or wire tie

52379, 52562, 52565, 52568, 52712, E04B 230

Patent

active

054560527

DESCRIPTION:

BRIEF SUMMARY
TECHNICAL FIELD

The present invention relates, in general terms, to an improved form of masonry or brick tie. The invention relates more particularly, but not exclusively, to a two-part masonry tie, in other words an arrangement made up of two separate, yet interconnectable members.


BACKGROUND ART

In the past it has been an accepted practice in the construction of so-called cavity brick walls, especially in Australia, to initially construct a first wall (preferably the innermost wall) in its entirety and, subsequent thereto, to construct the second (preferably external) wall or courses of bricks spaced-apart therefrom by the prescribed distance. In overseas countries, as for example the United Kingdom, in contrast to the Australian practice it has generally speaking been the routine to construct both inner and outer walls each on a progressive basis.
Regardless of whether or not the Australian or United Kingdom practice is to be pursued, building regulations require that adjacent, juxtaposed walls be interconnected utilizing components known as masonry or brick ties. The employment of such ties serves to provide increased structural rigidity and lateral stability and to assist in prevention of unwanted collapse of masonry brick walls. Such is especially important in, for example, earthquake-prone areas.
In Australia, with the aforementioned practice of initially constructing a first wall and subsequently building adjacent thereto a second wall, the requirement for the use of masonry ties resulted in the first constructed wall having a number of ties or members, generally of metal, disposed therewithin and protruding therefrom at the prescribed intervals. The aim was then to be able to construct the second or juxtaposed wall such that at least part of said protruding member could be located within the mortar thereof. The ties then serve to "connect" the walls in the desired manner. The very existence of such protruding members has however, been found to give rise to problems in terms of the safety of the bricklayer during the course of construction of the adjacent brick wall (on the other side of the cavity). In a practical sense the bricklayer took the risk of cutting or in some way impaling himself on the protruding portions of the ties while actually constructing the second wall. By virtue of the risk of such cutting or impaling, it had become a common practice for the bricklayer to bend the ties either upwards or downwards subsequent to their disposition in the first-built wall. It was the intention that, during construction of the second brick wall, the ties would be bent back into their initial configuration and appropriately located within mortar courses of the second brick wall whereby to provide the desired interconnection between the adjacent walls. Such a practice of first bending a brick tie and subsequently restoring such a tie to its substantially horizontal configuration in itself involved the expenditure of significant periods of time. Furthermore, investigations carried out on buildings which suffered significant damage during the recent earthquakes in Newcastle have revealed that the sometimes adopted practice of bending brick ties out of the way to avoid damage to the bricklayer gave rise to a more practical problem in that, when the second brick wall was being constructed, the brick ties sometimes were not restored to their substantially horizontal configuration so as to be disposed appropriately within the second brick wall. In effect, therefore, and in contrast to the prescribed building regulations, in some instances no brick ties were either in place or effective. The result was that the damage caused by the earthquakes was much more substantial than would have been the case if the walls had been properly constructed and braced, employing brick ties as prescribed.


DISCLOSURE OF THE INVENTION

The arrangement in accordance with the present invention seeks to overcome the problems and disadvantages associated with the prior art by providing a masonry or brick tie of a two-piece c

REFERENCES:
patent: 3277626 (1966-10-01), Brynjolfsson et al.
patent: 3292336 (1966-12-01), Brynjolfsson et al.
patent: 3341998 (1967-09-01), Lucas
patent: 4047353 (1977-09-01), Aarons
patent: 4722163 (1988-02-01), Thornton et al.
patent: 4730422 (1988-03-01), Young
patent: 4765108 (1988-08-01), Lapish

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