Abstract: A security barrier includes a plurality of barrier islands. Each barrier island has a concrete crash block having at least one pair of opposing side faces and external fixing elements on the opposing side faces. Attachments, which may be flexible attachments, extend between the external fixing elements of adjacent barrier islands of the security barrier. Each barrier island also has one or more load transfer element within the concrete crash block and, under load, the load transfer elements transfer load from the external fixing elements on one side of the concrete crash block to the external fixing elements on the opposing side of the concrete crash block.

Abstract: A surface mount security barrier includes a non-metallic matrix supporting and substantially encapsulating metal ballast. The security barrier has a mass in excess of 6 tonnes and a ratio of metal ballast to non-metallic matrix in excess of 1.5:1 by mass. A method of manufacturing such a security barrier is also provided.

Abstract: The invention provides a security barrier section (10) which has first (12) and second (14) barrier islands and cables (28, 30) there between. Each barrier island comprises a cast concrete block (16) having a front face and a rear face and a spring steel post (22) extending upwardly from a top face of the cast concrete block at a location between the front face and the rear face. An attachment means (26) is located on, or extending from, at least one of the front face and the rear face. At least one first cable (28) extends between the spring steel posts (22) of said the first (12) and second (14) barrier islands and is attached thereto by cable attachments. At least one second cable (30) extends between the attachment means (26) of said first (12) and second (14) barrier islands and is also attached thereto by cable attachments. The cable attachments are configured to allow said cable to slip in said cable attachment under loading.

Abstract: A security barrier includes a plurality of barrier islands. Each barrier island has a concrete crash block having at least one pair of opposing side faces and external fixing elements on the opposing side faces. Attachments, which may be flexible attachments, extend between the external fixing elements of adjacent barrier islands of the security barrier. Each barrier island also has one or more load transfer element within the concrete crash block and, under load, the load transfer elements transfer load from the external fixing elements on one side of the concrete crash block to the external fixing elements on the opposing side of the concrete crash block.

Abstract: The invention provides a security barrier section (10) which has first (12) and second (14) barrier islands and cables (28, 30) there between. Each barrier island comprises a cast concrete block (16) having a front face and a rear face and a spring steel post (22) extending upwardly from a top face of the cast concrete block at a location between the front face and the rear face. An attachment means (26) is located on, or extending from, at least one of the front face and the rear face. At least one first cable (28) extends between the spring steel posts (22) of said the first (12) and second (14) barrier islands and is attached thereto by cable attachments. At least one second cable (30) extends between the attachment means (26) of said first (12) and second (14) barrier islands and is also attached thereto by cable attachments. The cable attachments are configured to allow said cable to slip in said cable attachment under loading.

Abstract: A security barrier section includes two barrier section posts and at least one cable which extends between the two posts and is attached thereto, for example with U-bolts. Under impact of a vehicle the cable can slip to a limited degree. A security barrier includes a plurality of the security barrier sections and adjacent security barrier sections share a common barrier section post.

Abstract: A surface mount barrier post and assembly method has a retaining system to receive the post. The retaining system includes a post retaining element for receiving the post. The retaining element has a substantially vertical hollow steel section having an opening at its lower end on a first side, a steel foot box aligned with the opening and extending in a first direction, and a bottom plate to which the hollow section and foot box are attached. A steel front traverse member passes over the foot box and lies adjacent the bottom plate perpendicular the first direction. A steel rear traverse member lies adjacent the vertical hollow section on a second side opposite substantially perpendicular to the first direction. U-bolts are arranged to pass over the front and rear members on either side of the retaining element for receipt into holes in a surface on which the retaining system is mounted.

Abstract: A security barrier section (3) is provided which comprises two barrier section posts (4); and at least one cable (5) extends between two said posts (4) and is attached thereto, for example with U-bolts (6), such that under impact of a vehicle the cable (4) can slip to a limited degree. The invention also provides a security barrier (2) comprising a plurality of security barrier (3) sections. Adjacent security barrier sections (3) share a common barrier section post (4).

Abstract: A surface mount barrier post has a retaining system to receive the barrier post. The retaining system includes a post retaining element for receiving the post. The retaining element has a substantially vertical hollow steel section having an opening at its lower end on a first side, a steel foot box aligned with the opening and extending in a first direction, and a bottom plate to which the hollow steel section and foot box are attached. A steel front traverse member passes over the steel foot box and lies adjacent the bottom plate perpendicular the first direction. A steel rear traverse member lies adjacent to the vertical hollow steel section on a second side thereof opposite substantially perpendicular to the first direction. A plurality of U-bolts are arranged to pass over the front and rear traverse members on either side of the post retaining element so that, in use, they are received and set into a plurality of holes in a surface on which the barrier post retaining system is mounted.

Abstract: This invention presents a security barrier post (10) which has an underground footing (12) and an impact post (14) that extends above the surface. The underground footing (12) has a substantially vertical tubular steel shaft (16) having an opening at its lower end on an impact facing side and a steel foot box (18) aligned with the opening. A bottom plate (20) is provided to which the shaft (16) and said foot (18) box are attached. A spring steel back plate (22) is arranged adjacent and perpendicular to rear facing side of the shaft (16), and extends to at least one side of it. The back plate (22) is located at a position that is flush with or slightly below the surface in which the footing is buried. The impact post (14) has at least a first spring steel element (32) which is L shaped, and at least one packing element (34, 36, 38) located behind the first element (32) to retain it in a position in which it extends into the foot box (18).

Abstract: An security barrier underground footing (12), and a security barrier post (10) are provided. The footing (12) comprises a substantially vertical shaft (16) having a back plate (14) and a foot plate (18) both arranged substantially perpendicular to the shaft (16) and extending to at least one side thereof. In use, the footing (12) is at least partially buried. The back plate (14) is attached to the rear facing side of the shaft (16) away from which an impact will occur and is located at a position that, in use, is flush with or slightly below a surface in which the footing (12) is buried, and the foot plate (18) is towards the lower end of the shaft (16), at a position spaced from the back plate (16).

Abstract: A leaf spring suspension system for supporting a vehicle chassis (104) relative to a vehicle axle (105), the suspension system being arranged to be connected between first and second spaced connection locations of said vehicle chassis. The suspension system comprises a first elongate leaf member (10) arranged to be pivotably connected at a first end (14) thereof to the first connection location, and a second leaf member (12) pivotably connected at a second end (16) of said first member (10). A link member (108) is connected between the second leaf member (12) and the second connection location of said chassis, wherein the link member (108) is pivotably connected to the second leaf member at a first end thereof and is connected to the chassis at a second end thereof such that the angular orientation of the link member relative to the chassis can be altered in order to accommodate raising or lowering of the chassis relative to the vehicle axle.

Abstract: A leaf spring suspension system for supporting a vehicle chassis (104) relative to a vehicle axle (105), the suspension system being arranged to be connected between first and second spaced connection locations of said vehicle chassis. The suspension system comprises a first elongate leaf member (10) arranged to be pivotably connected at a first end (14) thereof to the first connection location, and a second leaf member (12) pivotably connected at a second end (16) of said first member (10). A link member (108) is connected between the second leaf member (12) and the second connection location of said chassis, wherein the link member (108) is pivotably connected to the second leaf member at a first end thereof and is connected to the chassis at a second end thereof such that the angular orientation of the link member relative to the chassis can be altered in order to accommodate raising or lowering of the chassis relative to the vehicle axle.

Abstract: An security barrier underground footing (12), and a security barrier post (10) are provided. The footing (12) comprises a substantially vertical shaft (16) having a back plate (14) and a foot plate (18) both arranged substantially perpendicular to the shaft (16) and extending to at least one side thereof. In use, the footing (12) is at least partially buried. The back plate (14) is attached to the rear facing side of the shaft (16) away from which an impact will occur and is located at a position that, in use, is flush with or slightly below a surface in which the footing (12) is buried, and the foot plate (18) is towards the lower end of the shaft (16), at a position spaced from the back plate (16).