A heavy-duty barrier, which is movable, comprising a base part, which comprises a ballast, and a fence part attached to the base part. The fence part comprises a fixed bar structure and a rigid connection element, which is movably attached to the bar structure, and which is connectable with a corresponding connection element of a neighboring heavy-duty barrier. The connection element comprises an attachment portion moveably attached to a bar portion of the bar structure, and a hook portion arranged to be engaged with a corresponding hook portion of another connection element.

A concrete-based composite material including iron rich particles is characterized by an iron content greater than 17% by weight of the composite material, can include iron particles which are an iron by-product recovered from iron slag material, can include iron rich particles which have an iron content of at least 60% by weight of the iron rich particles, and/or can include iron particles having a particle size distribution in the range of about −⅜ inch to +60 mesh or in the range of about −20 mesh to about +60 mesh. The composite material can include ground granulated blast furnace slag as a portion of the cementitious component of the composite material. A method of forming a structural element from the composite material includes casting the structural element such that the structural element is characterized by a ballistic performance of Level 10 as defined by Underwriters Laboratories standard UL752.

Provided is an adjustable barrier having a central hinge having a cylindrical post and an axis of rotation; a first expandable section coupled to the cylindrical post of the central hinge by at least a first connector; and a second expandable section coupled to the cylindrical post of the central hinge by at least a second connector. At least one of the first and second expandable sections is configured to articulate around the axis of rotation of the central hinge forming an articulation angle between the first and second expandable sections.

Disclosed is a fence post to be coupled to a flexible (e.g., mesh) fence to hold the fence above the ground. The fence post has a shaft to be driven into the ground. A downturned lower fence engaging hook extends from the bottom of the shaft to engage the bottom of the fence. The lower fence engaging hook is embedded in the ground along with the shaft of the fence post in order to hold the bottom of the fence against the ground. The fence post also has an upturned upper fence engaging hook extending from the top of the shaft to engage the top of the fence and hold the top of the fence up and above the ground. An upturned intermediate fence engaging hook extends from the shaft of the fence post between the lower and upper fence engaging hooks to engage the middle of the fence and hold the middle up and above the ground.

Embodiments of the disclosure provide a safety rail. The safety rail may include a body disposed on first and second adjustable boots. The first and second adjustable boots may be adapted to secure the safety rail to an excavation support structure. The body may include a lower rail connected to the first and second adjustable boots.

A portable safety rail system includes one or more railings inserted into one or more stackable rail bases. Each rail base can include a plurality of apertures for receiving end rail posts of railings through a raised hub defining an open region between the bottom of the hub and the surface on which the rail base rests. Each end rail post can have a stop flange that engages an upper surface of the hub when inserted therein and an aperture through the end portion that extends into the open region beneath the hub for receiving a pin to lock the post while allowing rotation of the post. The system can also include toe boards that are attached to railings with a mount having an aperture through which railings are extended, allowing the toe boards to also be rotated to be aligned with railings.

A barrier cable coupler for coupling two lengths of barrier cable comprises a coupler body including a threaded inner surface, a first end, and a second end; a fixed retaining collar having an outer surface and being retained to the first end of the coupler body, the fixed retaining collar including a tapered inner surface; one or more fixed end wedges positioned within the tapered inner surface of the fixed retaining collar; a tensioning retaining collar having an outer surface, the tensioning retaining collar positioned at least partially within the second end of the coupler body and including a tapered inner surface; one or more tensioning end wedges positioned within the tapered inner surface of the tensioning retaining collar; and a tensioning nut including a threaded outer surface engaging the threaded inner surface of the second end of the coupler body and retaining the tensioning retaining collar therein.

Provided is an adjustable barrier having a central hinge having a cylindrical post and an axis of rotation; a first expandable section coupled to the cylindrical post of the central hinge by at least a first connector; and a second expandable section coupled to the cylindrical post of the central hinge by at least a second connector. At least one of the first and second expandable sections is configured to articulate around the axis of rotation of the central hinge forming an articulation angle between the first and second expandable sections.

A heavy-duty barrier, which is movable, comprising a base part, which comprises a ballast, and a fence part attached to the base part. The fence part comprises a fixed bar structure and a rigid connection element, which is movably attached to the bar structure, and which is connectable with a complementary connection element of a neighboring heavy-duty barrier. The connection element comprises an attachment portion movably attached to a bar portion of the bar structure, and a hook portion arranged to be engaged with a corresponding hook portion of the complementary connection element.

A structural barrier and energy absorbing device comprises a plurality of structural elements. The structural element alone or in a plurality may serve as a traversal impediment or energy absorbing device, such as a pedestrian barrier, vehicular barrier, anti-tank obstacle, ballistic barrier, or the like. The structural element may be a tetrapod such that it comprises an element body having four extension portions that extend outwardly from the interior center to a distal end, such that the structural element maintains an identical orientation and a low center of gravity in each of four resting positions. The structural element may be a solid-state structural element comprised of a particular material or a portable and collapsible structural element wherein the element body comprises an outer skin defining an interior void space, such that during set-up or installation the interior void space may be filled with a filler substance onsite.