SURFACE MOUNT SECURITY BARRIER

1 . A unitary surface mount security barrier, the barrier comprising:

a non-metallic matrix, comprising concrete, supporting and substantially encapsulating metallic ballast, wherein

said security barrier has a mass in excess of 6 tonnes and a ratio of metallic ballast to non-metallic matrix in excess of 1.5:1 by mass.

2 . The surface mount security barrier of claim 1 wherein the ratio of metallic ballast to non-metallic matrix in excess of 2:1 by mass.

3 . (canceled)

4 . The surface mount security barrier of claim 1 having a bottom face and a top face and wherein the metallic ballast comprises a first layer of one or more pieces of metallic ballast located between the bottom face and the top face.

5 . The surface mount security barrier according to claim 4 wherein the metallic ballast comprises at least a second layer of one or more pieces of metallic ballast located above the first layer and between the bottom face and the top face.

6 . The surface mount security barrier of claim 4 wherein the matrix extends between said pieces of metallic ballast isolating them from one another.

7 . The surface mount security barrier according to claim 1 comprising one or more lifting points embedded therein, said lifting points comprising two or more box sections extending therethrough and opening on opposing surfaces thereof.

8 . (canceled)

9 . The surface mount security barrier of claim 1 wherein the metallic ballast comprises one or more of: steel; lead; one or more pieces of metallic ballast, each said piece comprising a single elongate section of metallic billet; one or more pieces of metallic ballast, each said piece comprising a plurality of elongate section of billet; and one or more pieces of metallic ballast, each said piece comprising a plurality of pieces of metal, especially metal balls or small pieces of scrap metal, bound together by a binder material.

10 . The surface mount security barrier according to claim 4 wherein the mass of the metallic ballast is biased towards a bottom face of the security barrier and wherein the first layer of at least one piece of metallic ballast is located in a lower 50% of the height of the security barrier.

11 . (canceled)

12 . The surface mount security barrier according to claim 10 wherein the first layer of at least one piece of metallic ballast comprises in excess of 60% of the metallic ballast.

13 . (canceled)

14 . The surface mount security barrier according to claim 1 further comprising a rebar cage substantially embedded within the matrix below the surface of said security barrier and surrounding said ballast within said matrix.

15 . (canceled)

16 . The surface mount security barrier according to claim 1 having a mass in the range of 7.5 tonnes and 8.5 tonnes, optionally comprising at least 5.5 tonnes of ballast.

17 . The surface mount security barrier according to claim 7 having a bench or seat attached to one or more sides thereof wherein said bench or seat is attached to said lifting point.

18 . The surface mount security barrier according to claim 1 further comprising a plurality of metal feet extending from a bottom surface thereof.

19 . The surface mount security barrier of claim 18 , further comprising a rebar cage substantially embedded within the matrix below the surface of said security barrier and surrounding said ballast within said matrix wherein said metal feet are formed as part of the rebar cage.

20 . A surface mount security barrier system comprising a surface mount security barrier according to claim 1 and an anti-skid plate beneath said surface mount security barrier and wherein the anti-skid plate has a plurality of metal feet extending downwardly therefrom, said anti-skid plate comprising a steel tray in which the surface mount security barrier is located.

21 . (canceled)

22 . The surface mount security barrier of claim 1 further comprising one or more fence post holes extending downwardly into a top surface thereof.

23 . The surface mount security barrier of claim 1 further comprising one or more post footing extending downwardly into a top surface thereof, said post footing for receiving, in use a post.

24 . A security fence comprising a plurality of surface mount security barriers according to claim 22 , a fence post located in one or more fence post holes in each said surface mount security barrier, and: at least one fence panel attached to fence posts of said adjacent surface mount security barrier, or at least one openable gate attached to said fence posts of said adjacent surface mount security barrier.

25 . A security fence comprising a plurality of surface mount security barriers according to claim 23 , a spring steel security post located in the security post footing of adjacent surface mount security barriers and a further security barrier comprising either one or more flexible barrier or a rigid barrier extending between the security posts of said adjacent surface mount security barriers, and wherein said flexible or rigid barrier is either permanently attached to said security posts, or is releasable from said security posts to create an openable barrier.

26 . A method of manufacturing a unitary security barrier comprising a non-metallic matrix supporting and substantially encapsulating metallic ballast, wherein said security barrier has a mass in excess of 6 tonnes and a ratio of metallic ballast to non-metallic matrix in excess of 1.5:1 by mass, the method comprising:

placing a first piece of a rebar cage, comprising at least a lower face of said rebar cage, adjacent a lower surface of a mould;

placing a first layer of at least one piece of metallic ballast above said lower face of the rebar cage;

placing at least two lifting points within the mould;

placing a second piece of a rebar cage within the mould, the second piece of the rebar cage comprising the remaining faces thereof; and

pouring concrete into the mould to substantially encapsulate said metallic ballast and rebar cage.

27 - 31 . (canceled)