Abstract: An awning for protecting a cargo in bad weather is disclosed, which comprises an awning arranged between a head piece and a vessel, the awning being designed, albeit not exclusively, for providing a protective covering during operations for loading vessels, more specifically for providing a protective covering for vessel holds when the hatches thereof are open. The awning is composed of a plurality of skirts, and each of these skirts comprises at least one cover, at least one flexible rod, at least one ring and at least one variable-length element. The volume of the variable-length elements may be increased or decreased by means of an external proportional control.

Abstract: An arena apparatus for staging a sport is provided. The apparatus includes a floor having a perimeter; and at least one wall coupled to the floor at the perimeter and extending upwardly and outwardly from the floor at an angle relative to an axis perpendicular to the floor, wherein the angle of the wall prevents an athlete from standing on the wall.

Abstract: An extendable structure adapted to operate between a retracted configuration and at least one at least partially extended configuration includes a box-like body, a foldable floor element, and a foldable ceiling element. The box-like body includes a first and a second upright. The foldable floor element is hinged at a lower portion of the uprights and is configured for being folded and spread out. The foldable ceiling element is hinged at an upper portion of the uprights and is configured for being folded and spread out. In the retracted configuration of the extendable structure, the foldable floor element and the foldable ceiling element are completely housed within the box-like body, which defines an overall size of the extendable structure.

Abstract: The removable roof system includes a set of guy ropes (10), each of the guy ropes extending between a top anchor point (2) and a bottom anchor point (3) of a structure to be covered, a velum (1) mobile between a deployed configuration in which the velum covers the structure to be covered and a retracted configuration in which the structure to be covered is uncovered, and a set of carriages (20) to which the velum is attached, arranged so as to be moved along the guy ropes of the set of guy ropes between the top and bottom anchor points in order to cause the velum to pass between its deployed and retracted configurations and comprising for each of the guy ropes of the set of guy ropes at least one motorized carriage, at least one motorized carriage cooperating with the associated guy rope by meshing or by alternating wedging.

Abstract: A retractable roof structure includes first and second roof support structures separated by a span distance, with first and second roof sections supported on the first and second roof support structures. A load transfer structure is configured to transfer load from a frame of the second roof section downwardly through a frame and truss structure of the first roof section to the first and second roof support structures.

Abstract: A tractor trailer trucks living quarters is a sleeper for a truck cab which is secured above the roof of the truck. Beneath the midpoint of the sleeper is a sink, oven, bed and refrigerator. The roof of the sleeper may be raised when in use and lowered when not in use via a plurality of switches in communication with a power source.

Abstract: A hard-shell motorcycle cover assembly includes a floor panel that is positionable on a support surface thereby facilitating a motorcycle to be rolled onto the floor panel. The floor panel is longitudinally elongated to accommodate a full length of the motorcycle. A shell is divided into a rear portion that is hingedly coupled to a front portion. The rear portion is positionable in an open position to facilitate the motorcycle to be driven onto the floor panel. Additionally, the rear portion is positionable in a closed position to enclose, and protect, the motorcycle on the floor panel. A biasing unit is coupled between the rear portion and the front portion for biasing the rear portion into the open position.

Abstract: A lift system for lifting an openable top portion of a nacelle of a wind turbine has first and second laterally spaced apart jacks pivotally connectable to a bottom portion of the nacelle and the top portion proximate a rear end of the nacelle. The first and second jacks are actuatable to raise and lower a rear of the top portion. The lift system further has a support member pivotally connectable to the bottom portion and the top portion proximate a front end of the nacelle. A front of the top portion is pivotable on the support member when the first and second jacks are actuated without raising or lowering the top portion where the support member is pivotally connected. The lift system permits opening the top portion where the top portion has a U-shaped lip into which a complementary inverted U-shaped lip of a rotor fairing is inserted, and permits opening substantially rectangular or non-rectangular nacelles.

Abstract: A retractable roof structure includes first and second roof support structures separated by a span distance, with first and second roof sections supported on the first and second roof support structures. A load transfer structure is configured to transfer load from a frame of the second roof section downwardly through a frame and truss structure of the first roof section to the first and second roof support structures.

Abstract: An apparatus for covering a vehicle is disclosed. The apparatus comprises a frame comprising anchors. The frame comprises a ramp and rails coupled to the ramp. The apparatus further comprises a hard cover provided in the shape of a vehicle. The hard cover comprises at least one latch. The apparatus further comprises a hydraulic system provided at the frame and coupled to the hard cover. The hydraulic system is operated using a motor. The apparatus may be operated with a cable and pulley system as well. In order to cover the vehicle, the vehicle is received at the ramp and the rails are operated to align the vehicle with the frame. Subsequently, the hydraulic system is operated to lower the hard cover to cover the vehicle. Upon lowering the hard cover, the latch is operably coupled to the anchor to lock the hard cover to the frame.

Abstract: A collapsible pop-up structure for the rapid erection of buildings includes at least two portals forming two first parallel aspect facades of the shelter, the two other facades each comprising means for vertical articulation, on one hand with respect to the uprights of the portals that they connect, and on the other hand with respect to an axis positioned centrally between the portals. The portals are independent and the uprights of one portal each comprise an internal profile that can be made to slide so as to increase the height thereof in order to impart pitch to the roof, wherein said internal profiles are connected by an upper beam and form a secondary upper portal that can be made to slide into the portal. Means for controlling the sliding are provided in at least one of the uprights.

Abstract: An electronic lock structure using a wireless charging device contains a power supply unit and an electronic lock unit. The power supply unit includes a variable-frequency drive and an AC/DC transformer. The electronic lock unit includes a battery and a rectification circuit, wherein the rectification circuit electrically outputs power of alternative current by way of a power receiving coil. When the power receiving coil is close to the power output coil, the power supply outputs the power to the electronic lock unit by using magnetic flux and to supply the power to the battery, thus charging the battery. When the power receiving coil is away from the power output coil, the power output coil does not conduct the power to the power receiving coil.

Abstract: A retractable roof system includes a support structure, having a first vertical leg, a second vertical leg, a third vertical leg, and a fourth vertical leg extending upward from a ground surface; a first guide track extending from the first vertical leg to the second vertical leg; a second guide track extending from the third leg to the fourth leg; a first support beam connecting the first vertical leg and the third vertical leg; and a second support beam connecting the second vertical leg and the fourth vertical leg; a roof retractably secured on the support structure, the roof having: a frame having a first edge aligned with the first track and a second edge aligned with the second track; rollers connected to the first edge and the second edge to slidingly engage with the first track and the second track; and a flexible roofing material secured on the roof frame; a pulley attached to the first end of the frame; force exerted on the pulley pulls a set of the rollers towards a center of the roof, causing a fi

Abstract: A storm shield apparatus for protecting persons, animals, or property within a bathing structure includes a retractable shield that is selectively moveable between a stowed position and a deployed position. The shield is moveable along first and second tracks. In some embodiments, the first and second tracks are disposed on the bathing structure, and the shield includes a plurality of nesting arcuate shield sections. In other embodiments, the tracks are positioned on opposing longitudinal end walls proximate the bathing structure, and the shield rolls over the bathing structure along the tracks. A trough with multiple panels may be positioned under the bathing structure to provide an additional barrier to prevent flying debris from penetrating the bathing structure from its sides, longitudinal ends or bottom. The trough mates with the shield in some embodiments to form a protective enclosure.

Abstract: A method for establishing access for mounting and dismounting of main shafts, gearbox, generator and other main parts located in the nacelle of a wind turbine, where the cabriolet remains localized on the nacelle, and guide transfer mechanisms are provided for mounting inside the nacelle. The basic idea is that the cabriolet is lifted upon rolls or roll sets which form the guide transfer mechanisms upward facing support surfaces, and that the cabriolet is stabilized by displaceable counter holds which are displaced and locked in position above the downwards positioned mounting flange, upon which the cabriolet can be displaced on the rollers or roll sets to a partly cantilevered position over the rear end of the nacelle. By the method, service on larger wind turbines can be performed without using mobile cranes, which saves resources.

Abstract: A structure includes a base, a first side wall rotatably attached to the base, a second side wall rotatably attached to the base, a roof guidingly coupled to both the first side wall and the second side wall, and a biasing assembly selectively urging the building into a fully erected configuration.

Abstract: A forward closure system includes a cylindrical frame. A pair of lune-shaped base sections are mounted to an inside surface of the frame. First and second opposed lune-shaped shell assemblies, each assembly including at least an outer shell section and an inner shell section, are rotatably mounted independently of each other at opposed ends along the rotation axis, the inner section and base sections of each shell assembly nested within the outer section when the forward closure system is in an open position, mating edges of the outer sections abutting one another when the forward closure system is in a closed position. An actuator is coupled to each outer shell section.

Abstract: Dual-side unfolding building modules are described that allow buildings with greater design flexibility, and particularly, large and open work or living spaces while allowing interesting roof designs such as butterfly type roofs. The building modules fold compactly for transport. The building modules can be prefabricated with interior and exterior finishing material thereby reducing the time required for finishing at the building site.

Abstract: A retractable roof system (30) for a large building structure (32) for selectively closing off an opening (39) of a fixed roof (34) of the building structure (32), the system includes at least one roof section (40) movably mountable on at least one pier (42). A deployment mechanism (46) is provided and includes a weight assembly in the form of a piston (76) of cylindrical form and comprising a generally cylindrical body (76) provided with top and bottom ring-type cylinder bumpers (78) and seal rings (84) let into ring grooves formed in the surface of the piston.

Abstract: The present disclosure relates to a building structure having a convertible roof with at least one moveable roof section. The moveable roof section can include an integrated overhang. The moveable roof section can also include a roller that rides on a track formed by an angle member. The convertible roof can further have a configuration that reduces rafter visibility.

Abstract: A process for providing emergency housing for a plurality of displaced people at a geographic location, said process including the steps of estimating the number of displaced people; determining a suitable combination of facilities to accommodate the displaced people; and transporting said facilities to said geographical location, wherein said suitable combination varies in accordance with the number of displaced people.

Abstract: A modular assembly capable of converting from a shipping container configuration into a building unit, and from a building unit into a shipping container configuration. From the shipping container configuration, a plurality of frame panels and unit panels moveably connected to a frame of the modular assembly are selectively positioned to form the floors, walls, and ceilings of the building unit configuration thereby forming a living and/or commercial structure complete with electrical, water and sewage connections. The assembly may include an automated erection system, which may include a system of electric motors, gears, pulleys, cables, automated mechanical arms and electronic controls, located within the container structure of the modular assembly, and which interact with a plurality of frame panels and unit panels to deploy and retract the plurality of frame panels and unit panels for constructing the shipping container configuration and building unit configuration.

Abstract: The present invention relates to a freestanding architectonic and constructive proposal, produced in the manufacturing facilities, which starting from an interconnectable basic model it can be assembled and reassembled according to specific requirements. Depending on the amount and shapes, it can scale up into horizontal, vertical or both complex architectonic structures. It is a foldable structure which allows easy arrangements for transportation and location in situ. Its configuration is carried through synchronized and symmetric orthogonal rotations and translations, both in its folding phase (1) and its unfolding phase (2), (FIG. 1), executed through any electric, pneumatic, hydraulic or manual system. Each one is integrated by axially symmetric segments forming the cover, the functional wall and the floor. The functional wall can lodge in its frame a typical wall, a functional piece of furniture or incorporate a specialized coupling module.

Abstract: A covering system includes a flexible, web-like membrane having first and second portions. A first cross support is connected to the first portion of the membrane, and a second cross support is connected to the second portion of the membrane. A drive mechanism is provided for moving the second cross support relative to the first cross support so that the membrane is movable between a first, retracted position and a second, deployed position. The drive mechanism includes a force multiplication mechanism for facilitating a longitudinal tensile stress application to the membrane when it is in the second, deployed position. A transverse tensioning mechanism that includes a catenary linkage is also provided for tensioning the membrane in a direction that is transverse to the longitudinal direction.

Abstract: A movable enclosure is configured to selectively enclose an area. The enclosure includes at least one side wall and an end wall attached thereto. The side wall comprises a number of individual panels that are independently movable along a track secured to the ground. The panels are selectively collapsible such that they may travel along the track and overlap one another when in a collapsed or stowed position. The enclosure may be configured in any number of intermediate positions wherein the panels are partially collapsed. Roof panels may be attached to the side walls for movement therewith, or alternatively, the roof panels may operate independent of the side walls to extend and retract between an open and collapsed configuration.

Abstract: A movable building structure is configured to selectively enclose an area. The structure includes at least one side wall and an end wall attached thereto. The side wall comprises a number of individual panels that are independently movable along a track secured to the ground. The panels are selectively collapsible such that they may travel along the track and overlap one another when in a collapsed or stowed position. The structure may be configured in any number of intermediate positions wherein the panels are partially collapsed. Roof panels may be attached to the side walls for movement therewith, or alternatively, the roof panels may operate independent of the side walls to extend and retract between an open and collapsed configuration.

Abstract: A modular housing system, also known as “Maisons Demontables” may utilize a plurality of lightweight composite construction panels to create modular housing units that have high degrees of resistance to environmental factors like wind, hurricanes, floods and so forth. The housing units may have a very high thermal insulating rating. The panels may comprise expanded polystyrene (EPS) panels to create a bent which is a plurality of panels that are hinged to one another so that they can be compressed for shipping, and expanded or unfolded to be used as part of a housing unit. The panels may be mated together to form a section of a housing unit such as a wall. The housing unit may be easily assembled or disassembled using basic tools. A hinge technique is provided for joining the panels together to form the bents, and may include a tensioning system to bind multiple panels together.

Abstract: A roof for a computer rack aisle is provided. The roof has a canopy that may be flexible and/or fire-resistant. The canopy has a retracted position an extended position. In the retracted position, the canopy may be wound around a spool. In the extended position the canopy may cover the top of an aisle between two computer racks. A selectively releasable retainer holds the canopy in the extended position while releasing the canopy to return to the retracted position when a predetermined condition is met. The canopy retractor is provided to return the canopy to a retracted position. The canopy having first and second lateral edges with flanges running from a position approximate a front portion of the canopy and to a position approximate a rear portion of the canopy. The flanges can be received within a canopy guide track to facilitate the smooth movement from the extend position to the retracted position.

Abstract: A movable enclosure is configured to selectively enclose an area. The enclosure includes at least one side wall and an end wall attached thereto. The side wall comprises a number of individual panels that are independently movable along a track secured to the ground. The panels are selectively collapsible such that they may travel along the track and overlap one another when in a collapsed or stowed position. The enclosure may be configured in any number of intermediate positions wherein the panels are partially collapsed. Roof panels may be attached to the side walls for movement therewith, or alternatively, the roof panels may operate independent of the side walls to extend and retract between an open and collapsed configuration.

Abstract: Disclosed is a pool opening to be exposed and/or concealed based on low profile covers constituted by roof components juxtaposed in the direction of the length of the swimming pool and each comprising a cover in a translucent material and a rigid frame formed of two arches placed in transverse planes and braced by longitudinal crosspieces with two end crosspieces delimiting two longitudinal parallel edges to the roof component and which rest on the longitudinal edges of the pool of said swimming pool defining a support surface, the system comprising a storage area located at an end of said pool said storage area being sufficient to accommodate the ground surface of a roof component allowing said roof components to be stored in a stacked way, all of said storage area being horizontally displaced from said pool opening, a wheel configured to mobilize said roof components allowing said roof components to be displaced horizontally along the pool towards and/or away from said storage area, a lifter in the storage

Abstract: A retractable roof system (30) for a large building structure (32) for selectively closing off an opening (39) of a fixed roof (34) of the building structure (32), the system includes at least one roof section (40) movably mountable on at least one pier (42). A deployment mechanism (46) is provided and includes ropes (66) and pulleys (68) appropriately mounted on the top section (50) of the pier (42). The ropes (66) extend from an actuating piston (60) to the movable part (44) of the top section (50).

Abstract: An animal confinement housing includes an air intake section and an animal confinement section. Air is drawn into the housing through the air intake section and directed through the confinement section to ventilate the confinement section and the animals confined therein. The height of the confinement section can be selectively varied between a raised position of sufficient height to permit personnel and equipment to enter the confinement section and a lowered position that is of sufficient height to accommodate the animals confined therein by reduces the cross-sectional area through the confinement section to increase the air flow rate through the confinement section, without requiring an increase in the rate of intake of air into the air intake section.

Abstract: A collapsible temporary housing system including a base, four walls being connected along each respective edge extending between at least two of the four corners, the walls being pivotally connected along the edges of the base so that when the walls are pivoted into a collapsible configuration each wall is laid upon a previously collapsed wall creating a nearly horizontal surface extending across a top surface area of the base, and a flat roof, the flat roof being detached from the four walls while the four walls are pivoted into an erected position, secured to the walls once the walls are erected, and set upon the nearly horizontal surface when the walls are pivoted into a collapsible configuration, wherein a plurality of other temporary housing systems may be stacked where a lean of the stacked housing systems which could result in the stacked housing systems falling over is not present.

Abstract: The foldable habitation has a foldable roof with a central section which can be folded into a generally flat configuration for transportation and storage, and which can be automatically deployed into a chevron shape upon deploying lateral sections of the roof. A novel method of handling a foldable habitation is also disclosed.

Abstract: Various aspects are directed to a spa cover lifter for lifting a spa cover comprising a first section and a second section pivotably coupled to the first section at a hinge interface. The lifter may comprise a first frame member, a second frame member, a drive system and a first cable. The first frame member may be coupled to the first section of the spa cover. The second frame member may be coupled to the second section of the spa cover, and the first and second frame members may be coupled to one another about the hinge interface. The first cable may extend from the drive mechanism to the first frame member.

Abstract: A passive indoor/outdoor stadium structure configured to reduce energy demands from the stadium structure includes a moveable roofing system and a micro-climate cooling system. The moveable roofing system covers an interior space of the stadium and has an open position and a closed position. The roofing system includes a fixed half-dome roof and a revolving half dome roof retractable beneath the fixed half dome roof, both the fixed half dome roof and the revolving half dome roof having an outer half dome clad with a plurality of solar hoods positioned in an overlapping arrangement. The micro-climate cooling system for cooling the indoor/outdoor stadium includes a full circulation mode for cooling a stadium volume when the roofing system is in the closed position, and a micro-climate mode for cooling a portion of the stadium volume when the roofing system is in the open position.

Abstract: Dimensionally adequate for the transit of persons in its interior, the main characteristic of which lies in the fact that it consists of a self-supporting, modular and removable cover, which allows simple and fast assembly, independent of said conveyor belt, in addition to subsequent folding in a horizontal position for those times of year when said cover is not used, giving it a high degree of watertightness and resistance to strong winds, with ensuing benefits in terms of visual impact and respect for the natural landscape, in addition to the possibility of using the entire outer surface of the cover as an advertising medium.

Abstract: The present invention provides a system or kit which includes plastic components which can be readily assembled to form a structure with the use of a minimal number of tools. The components are precut so that measurements and cutting of the component materials is eliminated. This leads to a savings in wasted materials. The components are readily assembled using conventional fasteners and simple hand tools. The components have preformed notches and tabs in order to facilitate assembly of the components without the requirement for measurements. This assures that the components will be assembled correctly and eliminates the opportunity for inaccurate measurements and incorrect assembly. The enclosure is provided with a sliding roof panel and pivoting doors which permit easy access to the interior of the enclosure.

Abstract: An outdoor screen room for creating a bug-free environment comprises a plurality of upright screened sidewalls held in a framework that also supports a plurality of screened roof panels that are pivotally attached to the framework, allowing them to be shifted between an enclosure-covering disposition for summer use and a vertical disposition during winter months when snow loads on a horizontal or a slightly pitched roof may be a problem.

Abstract: The invention can be efficiently used for intensively learning different disciplines, including foreign languages, and for forming and automating operational skills of professionals in different field of activity. It makes it possible to obtain a technical result and a high-quality intensive training. The use of a training aid is developed according to a synergetic theory in the form of a synergetic training device and makes it possible to provide a synergetic variant of intensive training. The synergetic training device is embodied in a dynamic technical device consisting of several soundproof booths which comprise training facilities and technical means using a sensor system.

Abstract: A mobile multi-functional shelter unit, for use as a general working area or for storing and maintaining heavy machinery. The mobile multi-functional shelter unit includes a central structure that has a deployed state and a non-deployed state as well as means for translating from the deployed state to the non-deployed state. The central structure has a base section, a central floor mounted on top of the base section, track means for raising a vehicle from a ground surface onto and off of the central floor. The central structure supports a raisable roof assembly and a lateral pullout assembly.

Abstract: An electrical equipment rack, such as a computer server rack, with a protective shield to protect the electrical equipment rack and equipment thereon from water damage is described. In general, the shield is constructed of a curved polycarbonate shell fastened to an aluminum frame having arc-shaped end sections attached to spaced elongated side rails. The aluminum frame is attachable to threaded rod hangers of the type that are used in most server rack rooms. Multiple shields may be fastened together end-to-end to increase the length of the overall shield, to extend over the entire length of the server racks or cabinets needed to be protected. Gaskets such as neoprene seals are compressed between shield sections to prevent water from penetrating between the fastened sections. Deployable curtains are fastened to the elongated side rails to further protect the electrical equipment rack from water damage.

Abstract: A pool shade device featuring two motor housings disposed on opposite sides of the pool, wherein each motor housing comprises a motor and a set of gears; a plurality of arcs covered with a cover component for shade, each arc having a first end operatively connected to a first motor and a second end operatively connected to a second motor, wherein the cover component can move between an extended position wherein the cover component is fanned over the pool or the spa and a storage position wherein the cover component is collapsed atop an edge of the pool or spa; wherein when the motors are activated, the motors cause the arcs to move between the extended position and the storage position.

Abstract: A microclimate cooling system for an indoor/outdoor stadium includes a partially rotatable roof, the rotatable roof having a first position environmentally sealing an interior of the stadium. and a second position exposing a portion of the interior to the atmosphere, a field surrounded by the stadium, and a tiered seating positioned adjacent a first side of the field. The system further includes a raised concrete barrier adjacent a second side of the pitch opposing the first side of the field, a first wall adjacent a third side of the field, and a second wall adjacent a fourth side of the field, the first and second walls perpendicular to the tiered seating extending between at least a portion of the tiered seating and the raised concrete barrier. The system further includes a plurality of air handling units for supplying cooling air to the tiered seating.

Abstract: A foundation system and a roof system are especially useful for flexible indoor/outdoor space structures. The foundation system has adjustment features for leveling of flexible structures. The roof system features independent roof segments. The foundation system includes one or more foundation members which have a frame, a base and an adjustable height member. Also disclosed are drive, connection, level sensing and control elements for the foundation system. The roof system includes a fixed bean with roller tracks, a set of overlapping roof segments, and a header beam also with roller tracks.

Abstract: A movable enclosure is configured to selectively enclose an area. The enclosure includes at least one side wall and an end wall attached thereto. The side wall comprises a number of individual panels that are independently movable along a track secured to the ground. The panels are selectively collapsible such that they may travel along the track and overlap one another when in a collapsed or stowed position. The enclosure may be configured in any number of intermediate positions wherein the panels are partially collapsed. Roof panels may be attached to the side walls for movement therewith, or alternatively, the roof panels may operate independent of the side walls to extend and retract between an open and collapsed configuration.

Abstract: A modular assembly capable of converting from a shipping container configuration into a building unit, and from a building unit into a shipping container configuration. From the shipping container configuration, a plurality of frame panels and unit panels moveably connected to a frame of the modular assembly are selectively positioned to form the floors, walls, and ceilings of the building unit configuration thereby forming a living and/or commercial structure complete with electrical, water and sewage connections. The assembly may include an automated erection system, which may include a system of electric motors, gears, pulleys, cables, automated mechanical arms and electronic controls, located within the container structure of the modular assembly, and which interact with a plurality of frame panels and unit panels to deploy and retract the plurality of frame panels and unit panels for constructing the shipping container configuration and building unit configuration.

Abstract: A moveable roofing system for covering an interior space includes a fixed half-dome roof fixed to and supported by a first support structure, a rotatable half-dome roof rotatable about and supported by a second support structure, the second support structure being concentric to the first support structure, and, wherein the rotatable half-dome roof is configured to rotate about the second support structure.

Abstract: A support assembly for supporting a retrofit roof to be installed above an existing roof made of preformed panels. Elongated support assembly members are positioned along the roof line to provide additional points of attachment for the new roof, while at the same time forming a substantially even plane for new roof panels. Some of the support members fit in the channels between the ridges of the preformed panels, which can be R-panels or standing seam panels. Transverse top members secure the channel-mounted members in place, while strapping members positioned atop the top members form additional lateral support for the new roof. A plurality of bracket support assemblies is secured between the top members to the roofing panels to elevate the new roof support. The bracket support assemblies are formed of two engageable parts to increase resistance to wind forces.

Abstract: A bleacher system comprises: a support structure mounted on wheels; two or more tiers mounted on the support structure, each tier including multiple girders at spaced intervals that are operably connected to the support structure, each girder supporting a plurality of seat supports and a plurality of foot board supports, with seat planks then secured to the seat supports and foot planks secured to the foot board supports in each tier; and at least one actuator operably connected to and extending between the support structure and a selected tier, such that extension of a rod of the hydraulic actuator causes the selected tier to pivot from a transport position into a deployed position, while also causing a corresponding movement of the remaining tiers from the transport position into the deployed position.