A frame for a transportable shelter includes a first base member, a second base member, a plurality of structural members, and a plurality of purlins. Each of the structural members have a first end that is connectable to the first base member, a second that is connectable to the second base member, and at least two interconnecting members that extend between the first end and the second end. A first interconnecting member of a structural member is connectable to a second interconnecting member of the structural member. The plurality of purlins are configured to connect one of the structural members to another structural member.

The invention is a structural connector used as a component to construct an arch consisting of a plurality of closely adjacent, polygonal rows of stringer beams. The multiple row polygonal arch is a low-cost, general purpose support structure for bridges, shelters and arbors applicable to many cost-, time- or environmentally-sensitive situations. The invention is a Y-shaped connector, typically made of sheet metal, with three brackets, two upper brackets and a lower bracket, which collectively enable a union of three beams forming one node of the multiple row polygonal arch. Using these Y-shaped connectors to join the beams at each node creates the arch structure, and additionally provides the features of cantilevering, modularity, generic component shape, reusability and safety. The invention is applicable to a variety of structures such as: pedestrian and vehicular bridges, shelters, arbors, as well as jewelry, furniture and toys.

A quonset style building is provided with an arched-roof defining a width, length and height, and tower supporting the roof adjacent its apex. The tower separates storage areas on opposite sides of the building. The tower also permits the building height and width to be increased over conventional quonset buildings, and allows the width to be 3 the height, while withstanding typical weather forces, including wind and snow.

A one-piece truss adapter for supporting single-axis trackers with truss foundations. A upside-down Y-shaped structure has bearing support portion and an opposing pair of legs with an angularly adjustable connector for securely joining the one-piece adapter to a pair of driven screw anchors at different angular orientations. Each leg terminates in a connector that is received in a socket integral to a driving coupler at the head of each screw anchor. A retaining nut may hold the connector in place to complete the angularly adjustable assembly.

Structural connectors used as a component to construct an arch including a plurality of closely adjacent, polygonal rows of stringer beams. The multiple row polygonal arch is a low-cost, general purpose support structure for bridges, shelters and arbors applicable to many cost-, time- or environmentally-sensitive situations. The structural connectors may be a Y-shaped connectors with three brackets, two upper brackets and a lower bracket, which collectively enable a union of three beams forming one node of the multiple row polygonal arch. Using these Y-shaped connectors to join the beams at each node creates the arch structure, and additionally provides the features of cantilevering, modularity, generic component shape, reusability and safety. Structural connectors are applicable to a variety of structures such as pedestrian and vehicular bridges, shelters, arbors, as well as jewelry, furniture and toys. Other aspects, embodiments, and features are also included.

A geodesic dome structure having a doorway in a vertical plane, includes: a single upper pentagonal planar member provided at a topmost position; five upper hexagonal planar members with vertices thereof meeting facing vertices of the upper pentagonal planar member; five middle pentagonal planar members disposed between the upper hexagonal planar members, with upper vertices thereof meeting corresponding vertices of the upper hexagonal planar member; five middle hexagonal planar members disposed between the upper hexagonal planar members and the middle pentagonal planar members; a single lower doorway hexagonal planar member disposed between the middle hexagonal planar member.

A strut disclosed herein, where multiple such struts are configured to form a geodesic dome, where each strut includes multiple elongate rod members with multiple fastener-through holes defined on each of the elongate rod members. The opposing ends of each elongate rod member comprises a bolt hole, where each of the opposing ends of one elongate rod member is joined and fastened to other opposing ends of the other elongate rod members to define a hub, thereby defining a framework for the geodesic dome. Each fastener-through hole is configured to fasten a covering material of a predefined configuration over the framework defined by the elongate rod members, thereby forming the geodesic dome.

A one-piece truss adapter for supporting single-axis trackers with truss foundations. A upside-down Y-shaped structure has bearing support portion and an opposing pair of legs with an angularly adjustable connector for securely joining the one-piece adapter to a pair of driven screw anchors at different angular orientations. Each leg terminates in a connector that is received in a socket integral to a driving coupler at the head of each screw anchor. A retaining nut may hold the connector in place to complete the angularly adjustable assembly.

A connector is described herein. In an embodiment, a connector may comprises an upper wall, a lower wall, one or more outer circular walls and one or more inner circular walls; wherein one of the one or more outer circular walls is an extended part of the upper wall or the lower wall; wherein one of the one or more outer circular walls and one of the one or more inner circular walls are configured to form a circular slot between the outer circular wall and the inner circular wall; wherein the connector is configured to accommodate a plurality of ends of a plurality of planar panels in the circular slot to connect the plurality of planar panels. The connect further comprises a top connector piece and a bottom connector piece; wherein the top connector piece comprises the upper wall and one of the one or more inner circular walls; wherein the bottom connector piece comprises the lower wall and one of the one or more inner circular walls; wherein the top connector piece and the bottom connector piece are configured to be joined. In an embodiment, the connector is configured to facilitate the assembly of a dome structure.

A method for manufacturing a non-magnetic spatial latticed shell structure composed of carbon fiber plate members. The load-bearing member of the latticed shell structure is made of non-magnetic carbon fiber plate, and joints are made of non-magnetic titanium alloy material. The magnetic shielding layer is provided on the roofing system above the structural layer, and a non-magnetic space with a magnetic field strength lower than 1 nT is formed inside the structure. The load-bearing members are fixed by two carbon fiber limb plates in the form of inter-limb connection and forms an hollow rectangular built-up section; and the joint comprises a titanium alloy gusset plate, a titanium alloy bolt group, and a carbon fiber limb plate; the magnetic shielding layer of the roofing system comprises a shielding layer pad, a shielding layer, a shielding laminate, a buffer layer, a permalloy plate, and a batten.