A modular safe room that can be installed in an enclosed space in existing homes, buildings and other occupied structures is disclosed. The modular safe room is constructed from three separate elements and can be sized to fit the desired space. The elements making up the modular safe room comprise tongue and slot elements for attachment to each other.

A hollow groove pipe structure is disclosed and includes a hollow groove pipe, first fixing sliding members, second fixing sliding members, and fixing members. The hollow groove pipe has a first surface, a second surface, a third surface, and a fourth surface for surrounding a hollow space. At least two opposite surfaces have grooves, and the bottoms of the grooves are greater (wider) than the opening and provided with trough holes. The plates having a plurality of protruding portions can be clamped in the grooves. The first and second fixing sliding members having protruding portions surround and clamp the plates with the space between the two through holes of the grooves, such that the fixing members pass through the holes of the first fixing sliding member, and the holes of the groove the holes of the second fixing sliding member fix and combine the plates into a whole.

A set of panels including a panel with a first main plane and an adjacent panel with a second main plane, wherein the panel and the adjacent panel are provided with an angleable locking device for locking a first edge of the panel to a second edge of the adjacent panel. The first main plane is essentially perpendicular to the second main plane. The angleable locking device includes an edge groove at the first edge and a tongue groove at the second edge. The edge groove includes a flexible tongue arranged in an insertion groove at a first side of the edge groove. The angleable locking device is configured to be unlocked by an angling motion of the panel relative the adjacent panel, such that an angle between the first and the second main plane increases.

A wall system comprising at least one wall module and at least one linking element is provided. Said wall module comprising a substantially rectangular plate (3), said rectangular plate comprising two side edges (5a, 5b), each comprising a side edge bent configuration (11), wherein said side edge bent configuration comprises a first side bend (13a), a second side bend (13b) and a third side bend (13c), wherein all three side bends (13a,b,c) are substantially 180° or 160-200° and are provided along different bending lines being parallel with the side edges (5a, 5b) of the plate. Said linking element comprises an elongated rectangular plate (33; 33′) comprising two side parts (45a, 45b: 45a′, 45b′) along a length of said plate (33; 33′) and a middle part (47; 47′) along the length of said plate between said two side parts, wherein said two side parts (45a, 45b; 45a′, 45b′) comprises locking features (43a, 43b; 201; 43a′, 43b; 43a″; 43b″; 43a′″; 43b′″), wherein the radius of the second side bend (13b) of the wall module is provided such that a side part (45a, 45b; 45a′, 45b′) of the linking element (31; 31′; 31″; 31′″; 31″) can be provided into an opening (17) between first and third bent side parts (15a, 15c) of the wall module and during the connection will be passing a third bent side part (15c) which finally will lock a side part (45a, 45b; 45a′, 45b′) of the linking element (31; 31′; 31″; 31′″; 31′″) within the side edge bent configuration (11) of the wall module (1) when a wall module and a linking element have been connected.

In one aspect, a smart corner is provided that can be prefabricated. The smart corner comprises a rear side including a first hole, a first side including a second hole, a second side including a third hole, and a top. A wall frame is also provided. The wall frame includes a top plate, a bottom plate, studs, and four smart corners. A framing system is also provided comprising at least two wall frames. The at least two wall frames connect via the smart corners.

A protective enclosure for equipment located outside, such as, for example pipeline and wellhead valves, dewatering pumps, etc. includes a wall frame assembly constructed of a plurality of vertical frame members that are connected together at their tops and bottoms by a plurality of angle-iron members. Wall assemblies comprising insulated wall panels that are connected in a side-by-side relation by tongue-and-grove couplings are attached to the wall frame with the bottoms thereof supported on angle-iron members that connect the bottoms of the vertical frame members. A roof assembly can be attached to the wall frame in a stationary fashion or in a movable fashion to allow the roof to open, permitting access into the enclosure for servicing equipment housed therein. The enclosure has other features as described in the specification in further detail.

A monolithic corner encapsulates one or more panels while maintaining structural integrity and maintain hygienic properties. The corner may securely receive one or more panels and provide flexibility to easily adjust the one or more panels. The corner may simplify installation and an ability to adjust connected panels without compromising safety, installation time, and sterility.

The invention is a system and method for building a polar zonohedron structure from precast cement panels. The building system may include a plurality of panels configured to register with each other. Each panel includes a precast cement base with side walls enclosing a cavity within the precast cement base. The panels include at least one ridge protruding from at least one surface of a side wall of the panel and at least one aperture on at least one surface of a side wall of the panel. Each ridge is preferable configured to interlock with each aperture; in his way, the panels interlock with each other to form the polar zonohedron structure.

A modular building system consists of panels of various sizes and shapes that join together through a series of primary joints and secondary joints. The primary joint and secondary joint have key-to-keyway fasteners and wedge-to-slot fasteners. In this way any panel can attach to any other panel. Panels could be joined for form larger panels and cutouts or other features could be included in the panels.

A temporary wall system providing wall panels with peripheral surface mounted roto-locks for linear combinations is provided. Hinged corner posts also, providing the roto-locks, enable selectively orienting wall panels transversely relative to each other. Each wall panel provides an internal strut structure for strengthening the wall panels.