A corrugated metal plate comprises a plate configured to define a series of crests and troughs, where the plate has longitudinal edges extending parallel to longitudinal axes of the crests and the troughs and transverse edges extending orthogonally to the longitudinal axes of the crests and the troughs. The corrugated metal plate further comprises at least one of: at least one longitudinal flange extending from each longitudinal edge, and at least one transverse flange extending from each transverse edge.

A modular structure includes a sill and a plurality of interlocking panels. The interlocking panels are attached to one another to form a panel assembly having a first end and a second end. The first end of the panel assembly is attached to a first side of the sill, and the second end of the panel assembly is attached to a second, opposing side of the sill.

An assembled structure includes multiple first assembling units, each of the first assembling units comprising main body parts and connection parts, wherein the main body parts have a profile shape of a polygon having 6n equal-length sides, wherein n is a positive integer; and the connection parts are provided on each equal-length side of each main body part; and the connection parts on each equal-length side are connected to each neighboring first assembling unit by a sliding pair, and the sliding direction of the sliding pair is the same as the extension direction of the sliding pair on the equal-length side on which the sliding pair resides.

A modular dome-like structure comprises a semispheric wall. A lowermost course of the semispheric wall is constructed using a plurality of springers. An intermediate course of the semispheric wall is constructed using a plurality of a first voussoir type. A second to uppermost course of the semispheric wall is constructed using a plurality of a second voussoir type. An uppermost course and third to uppermost of the semispheric wall is constructed using a plurality of a third voussoir type. The modular dome-like structure may have a cap constructed using a plurality of fourth voussoir type and a keystone or the modular dome-like structure may have an oculus. The modular dome-like structure may further include a lateral opening in the semispheric wall. The lowermost course and the intermediate course may be laid in a stretcher bond.

Frameless modular wall systems, frameless modular free-standing wall structures, and related methods are disclosed. The systems and structures include a plurality of panels including a wall portion and connector portions extending from opposing lateral sides of the wall portion, the connector portions each including a wide portion and a narrow portion extending between the wide portions and the panel portion. The systems and structures also include a plurality of connecting posts including connector slots configured to removably accept a connector portion of a panel therein, the connector slots each including a wide portion and a narrow portion corresponding to the wide portion and a narrow portion of the connector portions of the panels. When the plurality of panels and the plurality of connecting posts are removably coupled via the connector portions and the connector slots, the panels and connecting posts form a free-standing wall structure.

In order to provide an efficient hydroponic cultivation system, the disclosure provides a hydroponic cultivation system comprising a plurality of vessels extending in a predetermined direction; a plant holding plate that holds a plant and is disposed to span across the plurality of vessels; and a support mechanism provided between vessels adjacent to each other among the plurality of vessels, wherein each of the plurality of vessels is configured to contain a culture solution required for the growth of the plant, and the support mechanism supports the plant holding plate above the plurality of vessels.

A beam system and method of erecting a supporting arch enables large roofed structures to be erected quickly and economically. The method includes aligning a plurality of structural elements longitudinally; connecting upper corners of the structural elements to upper corners of adjacent structural elements, wherein adjacent lower corners of the structural elements remain unconnected; elevating first and second structural elements in a middle of the supporting arch; connecting lower corners of the first and second structural elements together; elevating third and fourth structural elements adjacent the first and second structural elements, respectively; and connecting lower corners of the third and fourth structural elements to lower corners of the first and second structural elements, respectively.

The Safe immediate accommodation structures is a modular, very light, sturdy, and economical structure, which rectifies all the hurdles and limitations of the past in the field of temporary and permanent accommodation, when it comes to providing immediate and secure accommodation. Due to its unique geometrical design (FIG. 1&2) it enables us to have the least number of modules, with the possibility of changing the dimensions, and the potential for combination, interconnection and disintegration, in the 6 coordinate directions. It is also very resistant against earthquakes, hurricanes, tornadoes, pressure, long term exposure to sun light, corrosion due to downpours.

The potential for being assembled and dismantled many times and in different places, makes this product a suitable choice for use in difficult to reach and rural areas, the research teams in protected areas, disaster-stricken areas, war inflicted countries where the need for establishing a relief camp is felt, and on the other hand, temporary and permanent accommodation in the exhibition areas, markets and store and the recreational complexes.

A chemical toilet cabin includes a platform (3), vertical side walls (4, 5, 6, 7) connected to the platform, and a roof (8) connected to the walls. Reversible joint connectors (9, 10, 11, 12, 21, 22) are along the edges of the walls and on the opposed faces of the platform and the roof to removably join each wall to the walls adjacent thereto, the platform and the roof. A reversible lock (13, 14, 15) for the joint connectors are provided arranged between each wall and the adjacent walls and between each wall and the platform and the roof.

A tornado shelter has a dome-shape, sheltering wall formed by a multiplicity of modular, hollow/cavitied wall panel units manually assembled together at respective peripheral edges by the mating engagement of interlocking, male and female portions. Each wall panel unit is a one-piece molding with opposed side wall portions in spaced apart, parallel relation defining between them respective containers with filler openings adjacent a top and containing a filler material of alternately water, a rheopectic fluid, gel or granular particles, thereby increasing impact strength and anchoring weight. Selected base panel units are formed with respective eyes receiving ground anchoring stakes. Panel portions can be laminates reinforced by wire mesh or KEVLAR integrally molded therein.