An erosion control roll comprises a porous outer casing having an interior, a fill material within the interior, wherein the fill material comprises a mineral wool. The erosion control roll is flexible and positionable where it can provide one or more of erosion control, sediment separation, water flow diversion, and a fire barrier.

A reinforcement unit and methods are provided for creating footings for supporting structures, such as a fence post, using a reinforcement unit that has a tower that is generally perpendicular to a base, the tower defining a cavity for receiving a portion of the structure and an anchoring material. The reinforcement unit can include a top portion of a tower that is frangible. The base of the reinforcement unit can further include a pocket (or similar recess) substantially similar in width or diameter to the top portion of the tower such that a second identical reinforcement unit can be inverted and stacked on top of the second reinforcement unit. The methods can include placing the reinforcement unit on a layer of backfill material behind the wall face so that the unit is located adjacent the wall face and the base of the reinforcement unit extends away from the wall face, covering the base with at least one other layer of the backfill material, fracturing the top portion from the tower, such that the top portion drops into the cavity of the tower, depositing a bottom portion of the structure in the cavity of the tower, and filling the cavity of the tower with an anchoring material.

An earth retention levee system is disclosed which is constructed from spaced apart facing parallel walls of interlocking sheet piles (1, 2) said sheet piles having outside faces (5) and inside faces (4) formed with gridspines (10) along a longitudinal extent thereof, said gridspines (10) being connected to adjacent edges of geogrids (20) which link said parallel walls and stabilise fill (21) disposed therebetween.

The present invention provides a material for preventing adhesion of an aquatic organism formed from a fluororesin and a fluorinated pitch.

A reinforced concrete structure including a reinforcement made from a plurality of elongate longitudinal members of fibreglass or like material, disposed substantially parallel with one another in at least one predetermined direction. The elongate longitudinal members are coupled to one another by means of coupling members of fibreglass or formed by a strip of flexible polymer material. Metal and/or synthetic fibres are mixed with the concrete matrix to provide the structure with shear strength, making it possible substantially to reduce the number of coupling members.

The invention is stay-in-place cladding for concrete, including reactive and slow-curing concretes, allowing for enhanced strength and durability of the contained concrete by allowing it to cure over time while enabling beneficial chemical reactions. The cladding is perforated with tubes or holes. A preferred embodiment is a caisson for concrete mixtures, where the caisson contains the concrete mixture, and the caisson is deployed in marine or terrestrial environments.

A cover for an underground enclosure may include an upper surface comprising a pattern of bosses, a first slot and a second slot disposed on the upper surface, a lower surface opposite the upper surface. A first reinforcement member may be coupled to the lower surface. The first slot may extend into the first reinforcement member, and a second reinforcement member may be coupled to the lower surface and aligned with the first reinforcement member. The second slot may extend into the second reinforcement member. The cover may be configured to be lifted by the first slot and the second slot.