A dynamically deployable, low visibility pneumatic cofferdam for flood mitigation is disclosed. The cofferdam includes a first planar component, a second planar component, an inflatable hermetic airbag sandwiched therebetween, and connection members attached to the first planar component, a second planar component to form a cofferdam unit. The connection members are adjustable to apply and maintain a desired amount of pressure on the airbag to enable a watertight seal to be formed. The cofferdam units may be sized and designed to sealingly mate adjacent cofferdam units in a variety of configurations to form watertight seals. The cofferdam units may also be sized and designed to attach to seawalls, flood walls, sidewalks, or other infrastructure. When in a deployed state, the height of the cofferdam may be adjusted to a desired height to provide flood mitigation. When in an undeployed state, the cofferdam remains in a substantially flat and unobtrusive position.

A dynamically deployable, low visibility pneumatic cofferdam for flood mitigation is disclosed. The cofferdam includes a first planar component, a second planar component, an inflatable hermetic airbag sandwiched therebetween, and connection members attached to the first planar component, a second planar component to form a cofferdam unit. The connection members are adjustable to apply and maintain a desired amount of pressure on the airbag to enable a watertight seal to be formed. The cofferdam units may be sized and designed to sealingly mate adjacent cofferdam units in a variety of configurations to form watertight seals. The cofferdam units may also be sized and designed to attach to seawalls, flood walls, sidewalks, or other infrastructure. When in a deployed state, the height of the cofferdam may be adjusted to a desired height to provide flood mitigation. When in an undeployed state, the cofferdam remains in a substantially flat and unobtrusive position.

A system for the double-sealed connection of waterproofing panels for lining surfaces of hydraulic works, such as dams, canals, water basins and the like. The system includes a central connection band, made of elastically flexible material and resistant to stress and perforation, whose longitudinal edges are superimposed to the longitudinal edges of continuous waterproofing panels; the system further includes a bottom locking element, an upper locking element superimposable to the previous one, and at least an intermediate sealing gasket, which extend along longitudinal edges of the connection band superimposed to the longitudinal edges of contiguous waterproofing panels; the bottom locking element and the upper locking element include a plurality of axially aligned rectangular compression plates connected by flexible hinges to allow the locking elements to freely adapt against planar and/or irregular surfaces of the surface of the specific hydraulic work to be waterproofed.

A system for the double-sealed connection of waterproofing panels for lining surfaces of hydraulic works, such as dams, canals, water basins and the like. The system includes a central connection band, made of elastically flexible material and resistant to stress and perforation, whose longitudinal edges are superimposed to the longitudinal edges of continuous waterproofing panels; the system further includes a bottom locking element, an upper locking element superimposable to the previous one, and at least an intermediate sealing gasket, which extend along longitudinal edges of the connection band superimposed to the longitudinal edges of contiguous waterproofing panels; the bottom locking element and the upper locking element include a plurality of axially aligned rectangular compression plates connected by flexible hinges to allow the locking elements to freely adapt against planar and/or irregular surfaces of the surface of the specific hydraulic work to be waterproofed.

A flood barrier to protect an area of land from floodwaters, the flood barrier having a waterside to be placed adjacent a body of water and a protected side opposing the waterside, the flood barrier comprising a plurality of supports spaced apart from one another; at least one intermediate barrier section supported to extend between a pair of neighbouring supports when assembled, the intermediate barrier section comprising at least a first beam arrangeable such that it is supported to extend between the corresponding pair of neighbouring supports and a water impermeable membrane sheet attachable to said first beam via a mechanical connection to form a skirt extending from said first beam, outwardly from the waterside of the flood barrier onto the ground.

A flood barrier to protect an area of land from floodwaters, the flood barrier having a waterside to be placed adjacent a body of water and a protected side opposing the waterside, the flood barrier comprising a plurality of supports spaced apart from one another; at least one intermediate barrier section supported to extend between a pair of neighbouring supports when assembled, the intermediate barrier section comprising at least a first beam arrangeable such that it is supported to extend between the corresponding pair of neighbouring supports and a water impermeable membrane sheet attachable to said first beam via a mechanical connection to form a skirt extending from said first beam, outwardly from the waterside of the flood barrier onto the ground.

A dynamically deployable, low visibility pneumatic cofferdam for flood mitigation is disclosed. The cofferdam includes a first planar component, a second planar component, an inflatable hermetic airbag sandwiched therebetween, and connection members attached to the first planar component, a second planar component to form a cofferdam unit. The connection members are adjustable to apply and maintain a desired amount of pressure on the airbag to enable a watertight seal to be formed. The cofferdam units may be sized and designed to sealingly mate adjacent cofferdam units in a variety of configurations to form watertight seals. The cofferdam units may also be sized and designed to attach to seawalls, flood walls, sidewalks, or other infrastructure. When in a deployed state, the height of the cofferdam may be adjusted to a desired height to provide flood mitigation. When in an undeployed state, the cofferdam remains in a substantially flat and unobtrusive position.

A dynamically deployable, low visibility pneumatic cofferdam for flood mitigation is disclosed. The cofferdam includes a first planar component, a second planar component, an inflatable hermetic airbag sandwiched therebetween, and connection members attached to the first planar component, a second planar component to form a cofferdam unit. The connection members are adjustable to apply and maintain a desired amount of pressure on the airbag to enable a watertight seal to be formed. The cofferdam units may be sized and designed to sealingly mate adjacent cofferdam units in a variety of configurations to form watertight seals. The cofferdam units may also be sized and designed to attach to seawalls, flood walls, sidewalks, or other infrastructure. When in a deployed state, the height of the cofferdam may be adjusted to a desired height to provide flood mitigation. When in an undeployed state, the cofferdam remains in a substantially flat and unobtrusive position.

An epoxy grout composition for marine repairs contains: a liquid epoxy resin comprising up to 15 wt. % benzyl alcohol and having a viscosity of 220 to 1100 cps; a liquid hardener comprising up to 25% benzyl alcohol and having a viscosity of 50 to 85 cps and, wherein the total benzyl alcohol content of the combined resin and hardener ranges from 1 to 12 wt. %; and preferably, a particulate inorganic filler comprising 10 to 50 wt. % of particles under 150 μm and 50 to 90 wt. % of particles between 150 μm and 1.18 mm. The composition is particularly suitable for placement in the annular space between a marine structure and a fiberglass composite jacket. The composition may be provided in kit form, with premeasured containers of resin, hardener, and filler. A related method is also disclosed.

An epoxy grout composition for marine repairs contains: a liquid epoxy resin comprising up to 15 wt. % benzyl alcohol and having a viscosity of 220 to 1100 cps; a liquid hardener comprising up to 25% benzyl alcohol and having a viscosity of 50 to 85 cps and, wherein the total benzyl alcohol content of the combined resin and hardener ranges from 1 to 12 wt. %; and preferably, a particulate inorganic filler comprising 10 to 50 wt. % of particles under 150 μm and 50 to 90 wt. % of particles between 150 μm and 1.18 mm. The composition is particularly suitable for placement in the annular space between a marine structure and a fiberglass composite jacket. The composition may be provided in kit form, with premeasured containers of resin, hardener, and filler. A related method is also disclosed.