Seal arrangement for a joint of two joint elements, in particular realized as a monopile and a transition piece, of an offshore structure, preferably an offshore wind energy installation, in particular a substructure thereof, in which, for the purpose of producing a stable joint, an upper joint element and a lower joint element are inserted into each other in a clamping manner by means of at least one seal unit, comprising one of the joint elements and the at least one seal unit fixed to the joint element, in such a manner that the seal unit, in a joining position, is arranged between an inner joint surface of one joint element and an outer joint surface of the other joint element, at least one seal unit having at least one elastic sealing element, which extends in the circumferential direction around the entire circumference and the thickness (D) of which is greater than the thickness (D) of an adjoining seal unit region and method for producing a seal arrangement.

The present invention relates to an erosion control apparatus and methods of using and installing the apparatus. The apparatus is constructed to prevent erosion of soil during typical weather or tidal conditions and adverse weather events. The apparatus can include an anchored marsh installation operative to stabilize a tidal marsh and shoreline.

The present invention relates to an intelligent bionic scouring protection structure for a cylindrical foundation and an application method thereof, wherein the protection structure is formed by connecting bionic units; an uppermost layer of the bionic unit is a bionic grass bundle, a bottom end of the bionic grass bundle is sleeved inside a bundle tube, the bundle tube is fixedly connected with a fiber mesh layer through a binding wire, connecting rings are fixed at both ends of the fiber mesh layer through the binding wire, two adjacent fiber mesh layers are connected through the connecting ring; and a bottom portion of the bionic unit is provided with a seabed connecting structure for fixing the whole protection structure. The above protection structure with an upper layer, a middle layer and a lower layer is adopted to replace traditional hard scouring protection such as ripraps and sand bags.

A multilayer membrane may be suitable for construction, and/ir adapted to be installed between a wall of a seat obtained in the ground and a concrete structure. The multilayer membrane may include: a first layer including thermoplastic polymeric material, impermeable or substantially impermeable to water; a second layer including thermoplastic polymeric material, impermeable or substantially impermeable to methane gas and/or radon gas and/or volatile organic compounds (VOC), fixed to the first layer and adapted to be positioned, when the membrane is installed, between the first layer and a concrete structure.