Abstract: A flexible sheet barrier includes a flexible sheet which has a first face to receive adhesive surface from a material being a strip of duct tape. The flexible sheet has a spaced series of apertures along at least one edge of the sheet, and inwardly spaced from the edge of the sheet. When the duct tape is placed over the apertures, the adhesive surface adheres to a substrate on the opposite face of the flexible sheet. The adhesive surface also adheres to the material on the first face of the sheet. This effectively provides a bonding of the flexible sheet to the substrate. Applied to a secured area, a room or space or floor can be lined so that safe asbestos abatement can be effected.

Abstract: A tarpaulin covering system for protecting a pile of material having an array of folded tubular vents connected to a tarpaulin to assist a weighting system on the tarpaulin in the prevention of aerodynamic lift. The vents remain in a folded state when the air pressure between the tarpaulin and the pile of material is minimal. During a period of increased air pressure, the vents in the area of increased air pressure open allowing for the escape of the entrapped air. The venting system prevents a protective tarpaulin from being lifted off the surface of the material pile which may cause damage to the tarpaulin resulting in an decrease in the overall integrity of the protective tarpaulin system.

Abstract: Apparatus to temporarily enclose multi-story structures such as municipal water towers during sandblasting and painting to thereby contain the debris and overspray from the environment. A plurality of booms extending in an array outwardly from the top of the structure are temporarily attached to the structure. Hoisting and guide cables extend downwardly from the ends of the booms out beyond the outermost periphery of the structure. A plurality of fabric or plastic panels are supported on a framework in turn attached to guides on the guide cables and the guides are attached to the hoisting cables. The guide cables are anchored to ground. The hoisting cables are connected to a common hoisting engine. The entire assembly of panels can be raised in unison about the structure for daily activities and then lowered at night or quickly lowered in the event of high winds.

Abstract: A modular ground deployable membrane supporting building structure and arched truss member therefor. The building structure incorporates a plurality of truss members supportable vertically in side-by-side arrangement within a ground anchor connectable at each end of each truss member. Each truss member is comprised of a plurality of frame sections each connectable in aligned abutting end-to-end relation. Each frame section is comprised of inner and outer channel members having a unique U-shaped cross section facilitating cross member connection to secure a spaced parallel relation of the channel members, flexible membrane retention and improved strength and reduced deployment time. An improved membrane tensioning arrangement and ground anchor structure facilitating pivotal deployment of each assembled truss member are also provided.

Abstract: The present invention is system for covering structures that have complex surfaces using tensioned membrane panels which exhibit maximum flexibility over multiple curvatures of the structure's surface. The system includes a means for supporting the cladding membrane over the structure, a means for tensioning the cladding membrane and a means for securing the tensioned cladding membrane to the structure. Generally, ribs are mounted to the structure wherein the ribs provide support for the cladding membrane. Attached at least one of the ribs are clamping channels which secure the tensioned cladding membrane to the structure. The ribs can be thermally isolated from the building surface to minimize directly conducted heat loss. Additionally, the tensioned membrane cladding system usefully accommodates various methods of applied insulation between the cladding membrane and the structure.

Abstract: A support frame for a moveable awning having horizontally spaced, cantilevered, extruded tubular frames having curved sections connected to the outer ends thereof and to the upper ends of horizontally spaced vertically extending, extruded tubular uprights. The extruded cantilevered frames, curved sections and extruded uprights all have an elliptical configuration in cross-section which are contiguous. The leading edge of the awning is connected to a trolley assembly having rollers engaging the exterior surfaces of the cantilevered frames, curved sections and uprights. By this construction and arrangement a continuous, smooth track is provided between the roof portion and wall portion to facilitate the extension of the awning and the retraction thereof to the stored position. Each curved section is of one-piece construction made of plastic and bendable when heated to obtain the proper curvature between the sloped cantilevered frames and the uprights.

Abstract: A triangulated roof structure for supporting a roof that projects in plan a substantially closed oval curve having major and minor axes, includes a substantially horizontal outer compression ring, a substantially planar cable truss positioned along the major axis of the oval, a plurality of oval tension hoops concentrically arranged within the compression ring at different heights relative to a common reference plane, and a plurality of substantially vertical compression members having upper and lower ends, affixed at their lower ends to each of the oval tension hoops. The compression members are located so that compression members affixed to a first tension hoop are not radially aligned with compression members affixed to an adjacent tension hoop.

Abstract: Shelter for snow-covering installations is provided with a prefabricated monobloc casing made of polyethylene type material obtained by rotational molding. This casing includes, at its lower part, elements for positioning and for directly anchoring to water and air pipes used to supply the snow guns. The bottom of the casing is provided with grooves enabling the casing to be positioned and centered on the water and air pipes. There is also provided a belt equipped with buckles for fastening of straps which provide connection between the shelter and the water and air pipes.

Abstract: A cover housing arranged to receive a barbecue grill assembly therewithin providing for a work surface at a top portion of the housing. The housing is arranged to optionally include doors as well as wind deflector wings mounted to the upper perimeter edge of the housing structure.

Abstract: An awning structure of the type having a frame work in which some parts are bent into a radius, and a fabric cover secured snugly over the frame, the curved frame parts extending generally between a vertical and a lower portion, and some of the frame parts being of identical cross-section, defining a generally U-shaped channel, with opposed side walls, and a bottom wall joining the side walls, and the side walls defining an open mouth remote from the bottom wall, an intermediate bracing wall extending from the bottom wall between the side walls, the side walls and the intermediate wall lying in planes parallel to one another and spaced apart from one another, and the intermediate wall defining a free edge, terminating substantially adjacent the open mouth, a bridge wall extending between each side wall and the intermediate wall, the bridge wall being spaced inwardly from the open mouth, and defining a generally arch shape in section.

Abstract: The invention provides a system to divide a ceiling of a building into smoke containment cells utilizing suspended and interconnected curtains. Resilient jawed clips are utilized to simply and firmly attach the curtains, mounted on rigid supporting bars, to roof deck supporting joists or girders. Methods are employed within the system to seal around intersecting ducts or pipes, to abutting curtains and to the underside of the roofing deck.

Abstract: A structural member useful for awning structures, including: an elongated bottom wall; two elongated side walls orthogonally joined to the bottom wall; two inwardly facing, elongated top wall segments orthogonally joined to the side walls to define a stapling groove between the opposing distal edges of the top wall segments, such that a portion of a sheet of fabric may be inserted into the groove; a stapling platform disposed internally of the structural member, parallel to the bottom wall, and orthogonally attached to and extending between the side walls, such that the fabric may be stapled to the stapling platform; a first, elongated hollow channel disposed internally of structural member, defined between the stapling platform, the first and second side walls, and the bottom wall; first and second reinforcing walls disposed between and attached to the first and second top wall segments, respectively, and the stapling platform; second and third elongated hollow channels disposed internally of the structural

Abstract: Disclosed is a portable shelter for air conditioner units, comprising a frame assembly mounted on wheels and configured to have a sloping top and parallel sides, the frame assembly being provided with a thermal reflective cover and anchoring means, whereby an outdoor air conditioner unit may be easily protected from the heat of the sun's rays and from the elements, including rain, wind driven debris and leaves, thereby allowing the air conditioner unit to function more efficiently at a lower temperature.

Abstract: A continuous curtain for surrounding a stadium and to extend upwardly from the upper margin of the stadium so as to minimize lateral wind forces and thereby eliminate erratic wind currents on or above the playing field of the stadium. The curtain has a number of side-by-side panels with each panel being porous or having holes therethrough to permit limited flow of air through the panels. The panels are suspended from a location above the stadium and extend downwardly to ground level in generally vertical planes. The upper margins of the panels are spaced well above the upper margin of the stadium, and the curtain is open at the top of the wind barrier. Thus, the interior of the space surrounded by the curtain is not closed to the upper hemisphere. The suspending structure for the curtain is buoyant in air and is held down by cables extending downwardly from the buoyant structure to the ground. The buoyant structure can be helium-filled balloons which are supplied by helium from helium sources at ground level.

Abstract: A clean environment enclosure assembly (10) prevents contaminants from reaching unfinished products during the manufacturing process. The clean environment enclosure assembly (10) includes a plurality of frames (16) which are secured to each other using various shaped brackets (60, 62, 64) to form a structural frame. Sheets of plastic (22) extend across each of the plurality of frames (16) to complete the housing (14). The sheets of plastic (22) are secured to side members (18) of the frames (16) by elongated caps (24) which run the length of the side members (18). The caps (24) have two arms (30, 32) which engage the two substantially parallel side walls (42) of the side members (18) wherein detents (38,40) of the two arms (30, 32) engage indents (44, 46) of the parallel side walls (42) preventing the cap (24) from freely disengaging the side member (18). The sheets of plastic (22) are sandwiched between the cap (24) and the side members (18).

Abstract: A solar structure, and more particularly a greenhouse, comprising a framework formed from frame members (20, 20a) and a flexible cover (26) having portions (28) of varying optical density along its length, and wound between a pair of opposed spooled 24 mounted on respective sides of the framework such that the cover is wound from one spool to the opposed spool. The cover is constrained to move over rollers (22) extending longitudinally of the framework, and the edges of the cover are received to move within slots formed in the edges of the frame members.

Abstract: This invention relates to an extruded section for use as a ridge or gutter section in a foil greenhouse, which section comprises at least one hollow extending in the longitudinal direction of the section. The hollow is accessible via a slot and is adapted to receive a thickened rim of a foil material. According to the invention the hollow is bounded by two superposed arms, at least one of them being sufficiently resilient for the arms to be bent apart to enable the thickened rim of a foil material to pass into the hollow and a further hollow is provided in the longitudinal direction of the section for receiving in operation a steel wire. The invention further relates to a foil greenhouse provided with at least a number of ridge or gutter sections comprising such an extruded section, to a foil sheet with a thickened rim suitable for cooperation with the present section, and to an auxiliary tool for zipping a thickened rim of a foil sheet into a hollow of an extruded section according to this invention.

Abstract: A construction assembly for attaching a flexible covering material to a fixture. The construction assembly employs a reusable support member having a pair of substantially circular openings with griping teeth protruding therefrom. At least one elongated locking bead employed for securely positioning a covering within the circular openings and an elongated trim pad operatively associated with the support member for securely maintaining locking beads in position.

Abstract: A containment system employs a pair of spaced webs and a cord which is laced through grommets mounted to the webs for adjusting the effective dimensions of the containment panels at the work site. Panels are connectable in end-to-end fashion wherein a panel flap extends between the panels with each of the panels being fastened to a support cable, so that there is no containment gap between panels of the containment system.

Abstract: This invention is directed to a plastic-covered, gutter-connected sheltering horticultural structure constructed of a framework and flexible cover sheet material. The structure is constructed with a number of gutters with arched roof trusses connected at their ends between side walls of a consecutive pair of the gutters. Anchor means are provided to join each of the gutters for engagement to longitudinal edges of flexible covering sheet material and maintaining the sheet material in a tensioned state over the roof trusses. A plurality of fastening means are spaced at intervals along the length of the gutters to maintain the anchor means spaced apart from the gutters to provide unobstructed passages between the anchor means and the gutters.

Abstract: A gazebo top connection which includes a gazebo top connector formed from a single sheet metal piece, the upper ends of a plurality of wood rafters and fasteners joining the gazebo top connector and the wood rafters. The gazebo top connector is formed with arms which are field bendable to accommodate rafters at infinite pitches over a wide range of roof pitches. A compression ring formed in the gazebo top connector provides a connection which gives strength to the connection.

Abstract: An all-purpose modular canopy system including a canopy frame formed of a plurality of interconnected sections, the sections being formed of welded tubular elements. The sections are modular in configuration including end and central portions whereby the sections may be selectively assembled to produce the desired length. The canopy frame includes transversely disposed brace elements associated with supporting columns and adjustable fittings to facilitate alignment of the columns and canopy frame, and the canopy frame is covered by a flexible covering using a lacing system between the frame and covering to maintain covering tension. The covering may include a skirt cooperating with skirt stabilizers formed in the canopy frame corners for maintaining the skirt properly oriented.

Abstract: A rain cap system which keeps rain, snow, wind, dirt, dust, and other elements from penetrating the assembly junctions of Fast Structures.TM.. Four gaskets are placed (one each) on the four structural bolts at each junction of the Fast Structure.TM. and a rain cap is snapped into place completely covering each junction. The rain cap squeezes the Fast Structure.TM. junction to seal out the weather and to hold itself in place, and thus does not require nuts, screws, bolts, glue nor any other fastening devices.

Abstract: A convertible enclosure particularly adapted to cover an outside hot tub installation. The enclosure includes a tubular frame with sliding cross-pieces. A cover is attached to the cross-pieces such that the cover may be extended to encompass one side and the top of the space desired to be enclosed with the opposite side remaining open.

Abstract: A rapidly erectable building structure includes a plurality of arches each having a pair of lower ends. Base mechanisms are provided for holding the lower ends of the arches to position them in longitudinally spaced, transversely extending, vertical positions. A plurality of panels of a flexible web material are stretched between the arches. Each panel has a pair of opposite side edges, a width corresponding to a longitudinal distance between adjacent ones of the arches and a length corresponding to a transverse distance spanned by the arches. A first pair of lines is connected to a first end portion of each panel and a second pair of lines is connected to an opposite second end portion of the same panel. The lines extend generally arcuately between the side edges of the panel and are spaced a predetermined distance apart in the transverse direction. The base mechanisms guide the terminal segments of each line so that they can be pulled together to thereby transversely tension the panels between the arches.

Abstract: A building structure for plant nursery or like buildings including a pair of side frame assemblies, each defined by an elongated gutter member supported at an elevated attitude by a plurality of upstanding supports. Brackets are disposed between the supports and the gutter member, the brackets including opposite side flanges disposed adjacent opposite sides of the gutter member to stiffen same. Straps span the gutter and connect the sides thereof together to resist splaying and thus deflection of the gutter under wind loading. The building structure includes a roof frame formed of a plurality of arcuate roof frame members which are supported in opposite sockets secured to the side flanges of the brackets.

Abstract: An aliphatic polyurethane film is utilized as the primary glazing material for greenhouses and other heat-gain enclosures such as pool covers and sun rooms. The film is preferably a thermoplastic aliphatic polyurethane film having good abrasion resistance, low temperature flexibility, ultraviolet resistance, and strength characteristics. Lightweight portable greenhouses and modular high-performance greenhouses are made possible by the system.

Abstract: A waterproof roof including a supporting roof structure and a hold down assembly for securing a generally continuous sheathing member to the supporting roof structure. The hold down assembly including a number of elongate members supported in a parallel spaced relation of the supporting roof structure with the sheathing member overlying the elongate members. The elongate members each including a raised center portion having a channel on each side. The sheathing member is locked in the channels by cables aligned in the channels and trapped therein by deforming the raised center portion.

Abstract: A covered arena structure capable of being erected or dismantled for transport from site-to-site comprises an interior portal frame structure comprising a series of inwardly inclined side members supporting an interior roof structure around the periphery thereof so as to define a substantially unobstructed arena area; a weatherproof membrane covering the interior portal frame structure and being draped over the inwardly inclined side members; an exterior pyramidal frame structure outside the membrane; and suspension means connected between the pyramidal structure and the membrane so as to suspend a portion of the membrane located above the interior roof structure.

Abstract: The present invention discloses various novel methods of conjoining parallel structural members of awning or other fabric framing structures, as well as an apparatus for accomplishing those methods. By properly orienting the structural members to be conjoined and securing them together with a properly formed clamp, the existing staple channel cover may also serve as a light and water tight seal between fabric covered sections of such structures. Various combinations of such structural members are disclosed, with methods described of conjoining those members and providing for sealing between such members.

Abstract: A shell structure for constituting the airflow shaft of a water-cooling tower comprises an upright frame support by ground foundations. The frame consists of a grid having at least three intersecting sets of bars, one of the sets comprising horizontal bars connected as to constitute circumferential girdles vertically distributed along the frame while the other two sets comprises bars which are at opposed angles with said horizontal bars, for defining a grid whose elemental pattern is an equilateral triangle. The bars are connected by nodes each receiving bars of all said sets. A veil defining a substantially continuous airflow stack is located within said frame and maintained in tension by connectons to the nodes of the frame. The frame may have a constant cross-section while the veil has a cross-section which varies along the vertical axis of the structure.

Abstract: A smooth, flat plastic film sheet forms a ceiling covering. The dimensions of the room are measured. The dimensions are proportionately reduced. A plastic sheet film is prepared to the reduced dimensions. A plastic edge connector is ultrasonically welded to the entire periphery. A connector strip is fastened to the upper wall entirely around the room. Hot air is blown to the top of the room. The edge connector at the edge of the film is snapped into the connector strip, starting at the corners. The film and edge connector are of a plastic that stretches when hot. The edge connector, when completely fitted into the connector strip pulls the film taut as the film shrinks when cooled to room temperature to provide a perfectly fitted, wrinkle free covering. The same invention may be used to cover a wall. The special edge connector is provided with a snap latching feature to provide audible indication of correct locking in place and the edge connector has a provision for easy unlatching for removing the covering.

Abstract: A fabric awning assembly, method of assembling the same from multiple sections of awning frames, and a novel divider bead for spanning the joint between adjacent sections of awning frames. Staple receiving channels in awning frame extrusions at the end of each section face like channels in adjacent sections so as to facilitate the use of only one divider bead between adjacent sections. The divider beads include protrusions for securing awning fabric within the channels and for protection from pooling moisture. The divider beads, when installed between adjacent sections of fabric awning frames, create the aesthetic impression that the adjacent sections are actually one continuous assembly.

Abstract: A screened enclosure such as that commonly used to cover lanais, swimming pools, outdoor dining areas and the like has supports for overhead screening. Typically the supports are a series of roof arches joined by cross beams, and fixed screening is secured to the upper surfaces of these supports. The enclosure includes removable screen sections which are removably secured to under surfaces of these supports or the under surfaces of specially provided screen support members. These under surfaces to which the removable screen sections are removably secured define several perimeter sections which are usually but not always rectangular, with a separate removable screen section for each of those perimeter sections. When a removable screen section is removed, partially or completely, it is removed from underneath the screened enclosure so that no one has to climb above the screened enclosure to reach and remove debris.

Abstract: A greenhouse for providing improved growth and environmental control for growing plants comprising a frame defining a structure having a given length and width forming a bounded, interior region for receiving plants; a flexible cover positionable over the frame for providing a roof enclosure for the structure; an elongate roller substantially extending along the length of the structure secured to a lengthwise edge of the cover; and a power source coupled to the roller for travel therewith operable for rotatably driving the roller about its longitudinal axis to retract or extend the cover relative to the frame.

Abstract: Apparatus to temporarily enclose multi-story structures such as municipal water towers during sandblasting and painting to thereby contain the debris and overspray from the environment. A plurality of booms extending in an array outwardly from the top of the structure are temporarily attached to the structure. Hoisting and guide cables extend downwardly from the ends of the booms out beyond the outermost periphery of the structure. A plurality of fabric or plastic panels are supported on a framework in turn attached to guides on the guide cables and the guides are attached to the hoisting cables. The guide cables are anchored to ground. The hoisting cables are connected to a common hoisting engine. The entire assembly of panels can be raised in unison about the structure for daily activities and then lowered at night or quickly lowered in the event of high winds.

Abstract: A building construction, in particular a roofed-over hall, has a lattice-type space framework and at least one flexible skin secured thereto as a means defining a chamber (25 or 26) which can be acted upon by a fluid medium and which has at least one inlet/outlet for the fluid medium. Foil webs (22, 23, 24) of translucent plastic material are fixed in superposed relationship between adjacently extending frame members (14) of the framework and form between the two frame members (14) air-tight chambers (25, 26) extending to the frame members. One chamber (25) can be filled with stationary inflation medium and the flow medium can flow through the other chamber (26) between the inlet and the outlet.

Abstract: A roofing system and method of securing insulation board to a roof deck free of mechanical fasteners includes the deck, a plurality of the insulation boards, and a flexible waterproof membrane which covers the boards. First and second embodiments of the invention include flexible polyisobutylene pads and strips respectively, which have opposite top and bottom pressure sensitive adhesive surfaces. A plurality of the pads are adhered to the insulation boards by their adhesive top surface at locations where mechanical fasteners otherwise would be necessary to secure the boards to the roof deck. A pair of the strips are adhered to the boards by their adhesive top surface at spaced locations. After removal of a release sheet from the bottom surface of the pads or strips, the boards are placed and pressed on the roof deck, and the exposed adhesive secures the boards to the deck free of mechanical fasteners.

Abstract: A suspended membrane structure, comprising:a plurality of suspending members arranged substantially parallel or substantially radial fashion;a membrane downward hung by a plurality of wire members (or hanging members) from a plurality of points on each suspending member; anda plurality of bracing cables each provided on the membrane in the same direction with that of said suspending member at each middle position between said suspending members, and capable of imparting a tensile force to said membrane.

Abstract: A construction assembly for closures, including awnings, canopies, boat coverings, signs and displays having a frame composed of aluminum and the like including channelled, joinable members preferably for assembly by welding into a frame, a covering material formed from a textile, and flexible trim pads for interlocking the covering material into the channels of the joinable members. The assembly includes staples to act as anchors to hold the material into place before forced insertion of the flexible fasteners. In cross section, the joinable members have a round or a multi-sided configuration.

Abstract: A method and an apparatus for roofing a structure or the like by erection of at least one frame and installation of a tent cloth therealong. The frame comprises various elements forming, in the erected position of the frame, roof and wall elements. The roof elements adjoin each other along a ridge line and the wall elements adjoin the roof elements along roof edge lines. The method and apparatus are characterized in that the frame has two frame halves hinged together in a flat starting position and lifted from that position by at least two points. The roof elements are lifted first on the side of the ridge line until the roof elements are at a given angle to each other, in which position there is provided between the roof elements a tie member which, in the loaded condition, defines an angle between the roof elements.

Abstract: A process for erecting a inflatable building structure which is especially adapted for housing plants. The process includes the steps of(1) installing a plurality of support posts in the ground or other suitable base;(2) attaching a roof structure formed from one or more inflatable membranes to the plurality of support posts; and(3) inflating the inflatable membrane.Preferably the inflatable membrane has peripheral rigid support members which are each attached to a row of associated posts. The roof structure formed from the inflatable membrane(s) together with rigid support members may be initially laid on the ground before being elevated.There also may be provided an upper securing cable extending across the top of the or each inflatable membrane which may initially be in the slack condition but which is subsequently tensioned before inflation.

Abstract: An enclosure is provided for an inground swimming pool. The enclosure is a building like structure made up of vertical sidewalls including a fence portion and a ventilating window portion. The roof is made from a transluscent plastic supported on a skeleton-like framework.

Abstract: A header bar for an awning structure has a square extrusion of aluminum tubing with a C-shape cross-sectioned track extending along an upper surface, and having an opening midway between a wall facing rear surface and a front surface of the tubing for removably retaining an expanded hem of a flexible awning cover therein. A strip of closed cell foam rubber between the rear surface and a wall acts as a waterproof seal.

Abstract: A frame structure comprises a plurality of parallel, spaced apart, arched frame assemblies composed of pairs of frames. This enables existing frame members to be used for longer spans and/or stronger structures. The pairs of frames are connected together at spaced apart positions. Conveniently the connections between frames occurs adjacent to the ends of sections forming the frames and a combined arrangement can be used for connecting frames and joining sections. Fabric panels extend between the frames of a pair and between pairs of frames. The panels have integral tensioning means. The frames are pivotally fastened to ground support means.

Abstract: A roadway protection against snow or the like comprises a vault structure having a skeleton formed by dismountable arches provided with a ventilated covering.

Abstract: This invention relates to a portable self-supporting collapsible shelter having a supporting frame; a cover comprising a tent enclosure when erected and supported by the frame having at least two side walls spaced from each other at the same ends by a rear wall, a top wall (or roof) and a front wall; the cover having at least one continuous opening directed across one first wall and at least partially across two other walls spaced from each other at the same ends by the one first wall, in use said at least one continuous opening being closed and opened by at least one continuous closure mechanism being disengageable so as to open the at least one continuous opening and being engageable so as to close the at least one continuous opening, enclosing an article traversing the at least one continuous opening.

Abstract: A portable isolation enclosure includes an open-bottomed enclosure having walls and a top portion constructed from a lightweight structural frame material with a lightweight fabric stretched thereacross to form a sealed enclosure. Windows of a transparent plastic material are mounted in the wall for viewing outside the enclosure. The lightweight materials of the enclosure allow one or more workers to lift the enclosure off of the ground and transport it from one contaminated area to another. An air filtration unit is pneumatically connected to the enclosure to impart a negative pressure within the enclosure, and to remove asbestos particles from air exhausted from the structure. A selectively closable door is provided in one wall which will permit a person to enter or exit the enclosure, and is designed to allow air to enter the enclosure, under the influence of the negative pressure.

Abstract: A viewing structure comprising a plurality of parallel arched frames, pivotally mounted at their ends on the ground, each frame having a front portion, a top portion and a rear portion. The front portion is generally arcuate, with straight top and rear portions joined by a further arcuate portion. The top portion inclines upward and rearward and support pillars are mounted on each top portion, spaced apart along the top portion. Seating members are mounted on the pillars and flooring members are provided between the pillars. The spaces between arches can be filled by fabric panels. The clear space beneath the structure can be used for food concessions, washrooms and other uses.

Abstract: A sealed portable isolation enclosure for use in removing asbestos material from ceiling or other elevated asbestos-containing structures including a booth and an adjustable ceiling-contacting plenum for accommodating ceiling of various heights. Disposed between the booth and the plenum is a flexible transparent film for enclosing and sealing the spaced formed therebetween regardless of the elevation of the plenum relative to the booth. The enclosure is equipped with EPA approved vacuum and ventilation systems for filtering and ventilating the contamainated air therein. A disposable bagtrap door system is provided for the disposal of the asbestos-containing materials. In addition, the enclosure may also include a shower system within the enclosure.