Abstract:
An apparatus for connecting an earthen formation to a concrete facing of a mechanically stabilized earth (MSE) structure, and a method of manufacturing the same. A one-piece, flat, plate-like connector has a stem and a tab, wherein the stem is resistance welded to a soil reinforcing element embedded within the earthen formation. The tab is connected to a facing anchor attached to the concrete facing. The stem of the plate connector has grooves formed in its opposing sides and longitudinal channels to increase the strength of the resistance weld.
Abstract:
A cover system is provided for waste sites and environmental closures, in which the cover system comprises a synthetic grass and an impermeable geomembrane that can be applied without the use of heavy earthwork equipment as temporary or final cover to control odors, erosion, gas migration and contaminate migration. The invention allows installation on very steep slopes and does not require the use of an extensive anchoring system to resist wind uplift or slope failure. A gas collection system is located under the cover system for the collection of gas produced by the waste sites.
Abstract:
A block suitable for use in a retaining wall, the block has a top surface, a bottom surface, a front surface, a rear surface, and opposed sides. The block includes a weakened section that extends substantially from the front to the rear surface, and which is configured and arranged to facilitate splitting the block into two smaller blocks. The weakened section can take the form of one or more slots that are generally situated within the body of the block and one or more grooves located at the front and rear surfaces, respectively. The groove at the front surface of the block is configured and arranged to simulate a joint between two adjacent blocks. Preferably, the front groove is formed by a core that modifies the block as it is removed from the mold in which it was cast. The block may include one or more projections and/or positioning elements that extend from the block in a generally vertical direction, and which are configured and arranged to engage a block in an adjacent course of blocks.
Abstract:
Disclosed is a geogrid (1) comprising a sheet main body (3) formed with a plurality of through holes (5) through which soil passes; at least one connector (7) protruded from a surface of the sheet main body (3); and at least one accepter (13) positioned opposite the connector (7) and accepting the connector (7) of another geogrid (1). With this configuration, the geogrid (1) can be conveniently, carried, maintained and constructed, and is improved in durability.
Abstract:
A unitized civil engineering structure capable of a solid integration and being high in durability. One block-form unit (B1), out of adjoining block-form units (B1, B1), is formed with a protrusion (P1, ...) and the other block-form unit (B1) is formed with a recess (H1, ...), and block-form units (B1, ...) are stacked one upon another with protrusions (P1) fitted into recesses (H1), whereby the civil engineering structure (ST1) is constructed.
Abstract:
The present invention relates to a system and method for constructing a pre-stressed modular construction for supporting or retaining an applied load. In particular, the present invention relates to a system and method for pre-stressed modular retaining walls. The system comprises a plurality of header stacks (101) constructed from a variety of header units (110). The header stacks are coupled by structural members (130). Active reinforcement elements (115) are used to induce a pre-stressing force into the header stacks to support or retain the applied load. A method for constructing the modular construction is provided.
Abstract:
A retaining wall structure built of wall-building units such as sand/soil bags or hardenable building units such as clay bricks has interconnecting members placed between adjacent courses of units to attach the adjacent courses to one another. The interconnecting members are plates having projections on both sides which protrude into the wall-building units of the adjacent courses. Sheets of geogrid preferably extend from between some of the courses of wall-building units into the fill retained by the wall-building units. Projections on the interconnecting members protrude through holes in the geogrid sheet, anchoring the wall face to the reinforced soil structure.
Abstract:
The dam comprises a body (11) made of loose material, for example earth and/or rocks (A), and a water barrier (12) axially extending to the dam body (11), comprising a waterproofing layered membrane (13) and a zone of waterpermeable loose material (B), on at least one side of the membrane (13), which can be injected with a sealing fluid and is designed to avoid puncturing of the membrane (13) and to allow the monitoring of the leakage waters due to failures in the waterproofing membrane (13). The water barrier (12) can be provided inside the dam body or close to the upstream face.
Abstract:
A facing element for a reinforced soil structure has first and second adjoining chamber (2, 3). A polymeric strip (6) to be secured to the facing element is circumflected about a non-metallic member (7), and the member (7) and a portion of the circumflected strip (6) are inserted into the first chamber (2) and moved laterally into the second chamber (3) where they are retained in wedged-engagement. The first chamber (2) is sealed to prevent removal of the rod (7).