An interlockable industrial mat having a plurality of elongated members some of which are arranged in staggered orientation to form protrusions and corresponding recesses on opposite ends of the mat. The elongated members are held together by a plurality of joining; members. To facilitate interlocking of one mat with another similarly configured mat, each protrusion includes a first hole that is in alignment with a first bore for receiving a connecting rod, and each end of the non-staggered members is provided with a second hole that is in alignment with a second bore for receiving another same size rod. The first and second bores are in alignment such that when the protrusions of one mat are received in the recesses of another mat, a connecting rod can be passed through each bore to interlock the mats together. Multiple mats can be interlocked that way to form temporary support structures.

An impact-absorbing assembly includes a covering layer being one or more of artificial turf, rubber mats, polymer mats, short pile carpeting, particulate infill, wood chips, and ground rubber chips. Also included is a layer of underlayment panels positioned beneath the covering layer. The panels have a panel section with a plurality of drain holes formed therethrough. A top surface of the panels is configured to support the covering layer. A bottom surface of the panels has a plurality of bottom projections that cooperate to define bottom channels suitable to permit water flow across the bottom surface, the bottom channels being in fluid communication with the panel drain holes. The bottom projections define a first spring rate characteristic that is part of a first stage and a second spring rate characteristic is part of a second stage, the first stage having a smaller volume of material than the second stage.

Systems and methods for a ground water filtration system are described. The ground water filtration system includes paver blocks designed to facilitate liquid seepage between the paver blocks and to route the seepage to a preferred area. A filter may be utilized to remove undesired particulates in the seepage prior to routing. The ground water filtration system additionally provides at least one layer of stone to facilitate flow direction of the seepage. At least one geogrid fabric is also provided to further enhance ground water filtration.

Systems and methods for a ground water filtration system are described. The ground water filtration system includes paver blocks designed to facilitate liquid seepage between the paver blocks and to route the seepage to a preferred area. A filter may be utilized to remove undesired particulates in the seepage prior to routing. The ground water filtration system additionally provides at least one layer of stone to facilitate flow direction of the seepage. At least one geogrid fabric is also provided to further enhance ground water filtration.

The invention relates to a method and a device for producing a paving area from paving elements, wherein the paving elements are printed in situ from a printable material onto a surface in a 3D printing method using a 3D printing device.

The disclosed technology includes a paver including a gripping structure on the bottom surface thereof, as well as methods for manufacturing and using the same.

The disclosed technology includes a paver including a gripping structure on the bottom surface thereof, as well as methods for manufacturing and using the same.

A structural system that includes at least two pavers partially defining a paved surface, the pavers partially defining a void between them. The system also includes a permeable joint located in the void between the pavers, where the permeable joint also partially defines the paved surface. The permeable joint includes a base layer formed of aggregate and bonded together with a non-cement binder, and a membrane layer formed of aggregate that is sized smaller than the aggregate of the base layer, where the aggregate of the membrane is also bonded together with a non-cement binder. The membrane is less permeable than the base layer and is located above the base layer.

An insert for lifting and leveling a precast concrete slab is provided. The insert includes a sleeve that extends through the concrete slab and has two distinct threaded portions on an inner surface of the sleeve. This configuration allows a lifting bolt to be positioned into an upper end of the sleeve to lift the concrete slab, and a different-sized leveling bolt to be positioned in the sleeve to selectively elevate or raise part of the concrete slab relative to a ground surface.

A modular roundabout or traffic calming system with interlocking connectors and a method of installation are provided. A plurality of boards is arranged in a pattern on a ground surface at an intersection of vehicle roadways, the pattern including one or both of a central island and a splitter island. At least some of the boards forming a perimeter of the pattern are affixed to the ground surface. At least some of the boards forming interior boards are interconnected at adjacent edges with connectors. The connectors can include a hinge joint so that the interconnected boards can be folded or rolled. A kit for a modular roundabout or traffic calming system is also provided.