A radon gas removal apparatus that is operable to substantially inhibit the entrance of radon gas into a structure. The radon gas removal apparatus is operably coupled to an area to which the structure is superposed. A housing is further included wherein the housing has a lower portion and upper portion mateably coupled. A blower assembly is present within the housing and is mounted in a vertical upright position. The lower portion of the housing includes a bottom having a mount extending upward therefrom to which the blower assembly is operably coupled utilizing a coupling. A fluid aperture is present in the mount and is operable to facilitate the egression of accumulated fluid present at the bottom of the housing into a connected pipe. The housing further includes an air turbulence diffusion member present on an exit aperture formed in the upper portion of the housing.

A construction method includes a charcoal paint application step in which a charcoal paint is applied to at least one of a floor, a wall, and a ceiling within a construction target room; an arrangement step in which flooring members made of Obi-sugi are arranged on the floor of the room; a diatomaceous earth application step in which diatomaceous earth is applied to the wall of the room; and a spraying step in which an antioxidant aqueous solution is sprayed on at least one of the floor on which the flooring members are arranged, the wall to which the diatomaceous earth is applied and the ceiling to which the charcoal paint is applied.

A membrane 10 is a geomembrane 10, which takes the form of a non-conductive sheet 11. A conductive layer 13 is printed on to the sheet 11, in this instance in a geometric pattern of a rectangular grid. The lines of the grid 13 are conductive and connected to each other, with non-conductive gaps 15 disposed between the grid lines. Accordingly, a conductive linear network is formed, which has the requisite conductivity for leak detection.

A planar, pliable sealing member is provided as a flexible seal for covering an upper opening of the well pit for any configuration of sump pump system. The sealing member forms a continuous membrane that provides a gas seal formed of any suitable non-gas diffusive or selectively gas diffusive material, including various elastomeric rubbers, such as butyl rubbers or other similar or functionally equivalent polymeric or co-polymeric rubbers. A seal at an outer periphery hat forms a continuous adhesive seal. The membrane further forms access orifices to allow for the passage of egressing structures such as pump discharge, ventilation, sump electrical connections, etc. A second sealing element is then applied or affixed providing an air-tight seal between the membrane at each orifice and a surface of any egressing structure. The second sealing element may be a similar adhesive, mastic or caulking material as with the first sealing element.

A barrier tape comprises a barrier section comprising one or more barrier layers and one or more adhesive layers adhered to a face of the barrier section. The barrier tape can be used to join together adjacent barrier sheets or to patch a breach in a barrier sheet to form a barrier assembly.

A system and method for selecting a proper fan for an air flow system for mitigating radon in a building. An air flow system includes a pipe connected to an access hole extending through the center of a slab and into the underlying soil. A test hole also extends through the slab. A variable speed test fan is installed in the pipe, and a manometer is installed to measure a static pressure value of the overall system. A chart or a computer program is configured to correlate a particular speed of the test fan and a particular static pressure value when the test fan creates an initial draw at the test hole with an identification of a proper fan. The proper fan has an operating speed which is closest to the particular speed. The proper fan is then installed in place of the test fan in the air flow system.

A temporary radiotherapy facility for use during renovation, upgrading, and/or modernization of an existing facility. The radiotherapy facility includes a central vault room containing a radiation emitting device and a platform for holding a quantity of radiation shielding material above the central vault room. The platform is supported by shear walls that are disposed outside the sidewalls of the central vault room such that the radiation shielding material is supported and suspended above the central vault room without being in contact with or bearing upon the central vault room or affecting the height or level of the central vault room.

A method and system for monitoring using a sub-slab sensor assembly for a building having a slab includes a housing, a first air quality sensor coupled to the housing and generating a first air quality signal for air above the slab, a second air quality sensor coupled to the housing and generating a second air quality signal for air below the slab and a pressure sensor coupled to the housing. The pressure sensor generates a pressure signal corresponding to the pressure below the slab. A position sensor generates a position signal corresponding to a location of the sensor. A network interface communicates the first air quality signal, the second air quality signal or the pressure signal, or warning signals corresponding thereto and the position signal to a network.

A sump cover having a receptacle and an automatic drainage device disposed in the receptacle. The drainage device includes a base platform defining a valve opening in communication with an outlet of the receptacle, a support structure attached to the base platform, a valve stem assembly, and a float assembly. The support structure includes a guide portion defining a slot in alignment with the valve opening. The valve stem assembly is slidingly disposed in the slot and includes a sealing member for selectively closing the valve opening. The valve stem assembly is moveable into a closed position, sealing the valve opening, and moveable into an open position, unsealing the valve opening. The float assembly includes a pin to selectively lock the valve stem assembly in the closed position and releases the valve stem assembly to the open position when a certain amount of liquid is present in the receptacle.

A sump cover having a receptacle and an automatic drainage device disposed in the receptacle. The drainage device includes a base platform defining a valve opening in communication with an outlet of the receptacle, a support structure attached to the base platform, a valve stem assembly, and a float assembly. The support structure includes a guide portion defining a slot in alignment with the valve opening. The valve stem assembly is slidingly disposed in the slot and includes a sealing member for selectively closing the valve opening. The valve stem assembly is moveable into a closed position, sealing the valve opening, and moveable into an open position, unsealing the valve opening. The float assembly includes a pin to selectively lock the valve stem assembly in the closed position and releases the valve stem assembly to the open position when a certain amount of liquid is present in the receptacle.