A mechanical closure device comprises an enclosure having four sides, a top and bottom and defining a discharge opening at the bottom. A floodgate assembly is interiorly removably mounted to the enclosure and comprises a pair of doors pivoted on a hinge assembly between an opened position and closed position. In the closed position, the doors seal against the flange to prevent passage of water through the discharge opening. A discharge drain assembly is preferably disposed on one door and has an opened and a closed position. An appendage is provided to facilitate opening and of the door. Upon removal, the floodgate assembly is stably positionable on a multipositionable service rack. A multipurpose tool is employed unlatching the floodgate doors and slidably removing the floodgate assembly.

A comprehensive dry flood proofing system to mitigate inland flooding risk for existing or new homes and other buildings. The system leverages the home or building's structure to offer practical and affordable inland area flood protection for structures constructed with a slab on grade foundation. The system includes pluggable weep holes, entry door/garage door/window protectors, wall appurtenances and penetration protection, a house wrap and/or debris barrier for wall protection and sewage anti-backflow protection. The system is reusable, easy to deploy, does not detract from the home or building's permanent appearance, allows for ingress/egress during flood events and can protect the home or building from standing water up to 24 above slab elevation. The preparation and installation preflood, the deployment immediately preceding a flooding event and the subsequent removal after a flooding event can be provided by both contractors and homeowners.

Provided is a structure for operating a watertight door by use of buoyancy. The structure includes: a detention tank for storing rainwater flowing from a street inlet; a buoyant member which is installed in the detention tank; and a sensor installed in the detention tank, in which if the buoyant member raised by the buoyant of the rainwater collected in the detention tank comes into contact with the sensor, the watertight door is automatically operated. The watertight door structure manually operated at localized heavy rain is improved, and the watertight door is automatically operated if the water level reaches the predetermined level.

A comprehensive dry flood proofing system to mitigate inland flooding risk for existing or new homes and other buildings. The system leverages the home or building's structure to offer practical and affordable inland area flood protection for structures constructed with a slab on grade foundation. The system includes pluggable weep holes, entry door/garage door/window protectors, wall appurtenances and penetration protection, a house wrap and/or debris barrier for wall protection and sewage anti-backflow protection. The system is reusable, easy to deploy, does not detract from the home or building's permanent appearance, allows for ingress/egress during flood events and can protect the home or building from standing water up to 24 above slab elevation. The preparation and installation preflood, the deployment immediately preceding a flooding event and the subsequent removal after a flooding event can be provided by both contractors and homeowners.

A temporary water barrier for residential and commercial doors. The temporary water barrier is an inflatable bladder that is configured to be installed in a doorway and inflated to create a barrier to water within the jam of the door or opening beneath the door. The elongate bladder has sealed ends, an inflation valve to communicate an inflation fluid to an interior of the bladder. A resilient seal may be provided along one or more of a top surface and a bottom surface of the bladder. A notch may be defined in the bladder with the notch dimensioned to fit around a hinge supporting the door in the doorway.

One illustrative kit disclosed herein includes a package and a plurality of individual sections of a moldable material positioned within the package, wherein each of the individual sections of the moldable material have an axial length. In this example, when viewed in a cross-section taken through the individual sections of moldable material in a direction transverse to the axial length, each of the individual sections of the moldable material have a non-rectangular cross-sectional configuration for at least a portion of the axial length of each of the individual sections of the moldable material.

An inflatable barrier separates a first section from a second section of space, providing containment for the first section. The air pressure in the first section is different than in the second section. The inflatable barrier includes an inflatable bag that has edge seals in the form of parallel tubes that may be inflatable. The inflatable bag receives air from an air mover through a first opening that may be reinforced with webbing. It has a vent carrier that can hold a vent. The vent releases air into the first or second section while the bag stays inflated. A tension rod prevents the bag from bulging out of shape. The bag may be hung from an expandable rod. An internal channel may route air through the whole bag. Edge hooks and a ballast container may minimize air gaps around sides and bottom.

The present invention is a rapidly deployable flood defense system and method that has at least one barrier cover, each comprising a plurality of laterally-extending crossbeam housing tubes stacked generally vertically and housing an inflatable crossbeam disposed within the tube, an end retaining tab at each end of the tube, and a plurality of rear support retaining tabs spaced along the lateral length of the crossbeam housing tube; and a front apron and a rear apron. The system also has a plurality of support tubes and a plurality of additional support tubes positioned along the lateral length of the crossbeam housing tube. Each support tube held in the generally vertical direction by a base post and each and additional support tube positioned along the lateral length of the crossbeam housing tube having an additional base post positioned rearwardly.

A flood protection system comprises a plurality of stackable planks which mount at their ends to a building wall with a water tight seal. The wall mount includes a flat gasket portion directly affixed to the building and outwardly extending protrusions having a substantially T-shaped configuration located thereon such that a uniquely shaped gasket connected to a plank engages the substantially T-shaped outer portion of the protrusions to permit rapid stacking and disassembly of planks. The extruded aluminum planks include internal ribbing to provide added strength while eliminating the excessive weight of conventional planks. Unique anchor means may also be provided to stabilize the planks where long spans are involved.

A flood defense system for homes, structures and other buildings consisting of a watertight film (16) adhered by a sealant tape (10,12,14). The film (16) has high elongation properties to stretch and fill gaps, cracks, and other paths of liquids into buildings. The sealant tape (10,12,14) has high tack properties and is thick such that it can conform to textured surfaces which are often found on exterior walls. Together the sealant tape (10,12,14) and film (16) form a watertight seal which can be rapidly applied and later removed with no modification to existing building.