A tornado shelter and having a reinforced monolithic construction resulting from a single pour of concrete is described herein. Rebar extends upwardly from a base. The rebar is encased in concrete that forms the walls of the shelter. An upper portion of the rebar extend above a top surface of each of the walls. The upper portion of each of said rods are bent inwards and are also encased in the single pour of concrete for strengthening a ceiling portion of the shelter. A door, in-wall conduits, vent orifices and attached benches may also be provided.

The present application provides a prefabricated structural system and an assembly method thereof. The prefabricated structural system may be applied to steel structures, reinforced concrete structures and timber structures. When applied to the steel structures, the prefabricated structural system includes a plurality of steel structure joints and related members. The steel structure joints and related members further comprise: a beam-column connecting sleeve, comprising a first box-shaped steel tube and first C-shaped sleeves extending from and perpendicular to outer surfaces of the first box-shaped steel tube, wherein the first C-shaped sleeve is provided with first wedge shaped recesses at ends of upper and lower flanges thereof; columns, having a column connecting end inserted into the first box-shaped steel tube; main beams, having a main beam connecting end inserted into the first C-shaped sleeve; and main beam fixing steel plates, provided with first wedge shaped protrusions that are tenon-mortise-jointed with first wedge shaped recesses at both sides of the first C-shaped sleeve. In addition to the steel structural construction, the beam-column connecting sleeve of the prefabricated structural system may be further extended to reinforced concrete structures and timber structures.

The invention relates to an accessible connector for a building module, the accessible connector comprising arms with a top plate and bottom plate, a cavity formed between the top plate and the bottom plate and having an open side, and fixing apertures formed in one of the plates to receive fasteners for engaging with a corresponding connector of a second building module. The fixing apertures are accessible through the open side of the cavity, which has a height containable within a module floor and/or ceiling envelope and sufficient to allow the insertion of fasteners through the open side.

A system for providing an angled construction or bent beam construction. Such system may include a first beam comprising a first elongated beam segment having a first interlocking joint portion at one end, and a second beam comprising a second elongated beam segment having a second interlocking joint at one end, wherein the first interlocking joint portion is configured to rotatably couple to the second interlocking joint to form a rotatable joint such that the angle between the first beam and the second beam is adjustable.

Insulated panels having suitable surface members separated by an inner layer of insulated foam are used for the walls and as structural members for the floor and roof of a building structure. A rigid frame supports the wall, floor and roof insulated panels. The wall insulated panels are supported on the exterior of the frame by rigid brackets with the insulated panels being suitably flashed or capped.

An I-beam support system for aligning and leveling an I-beam during installation on a ground surface, wherein the I-beam support system comprises two sides, a hinge assembly and a fastener assembly. The two sides comprise a first side and a second side, each among the two sides comprises a beam clamp arm, a clamp arm hinge, a vertical support assembly, and a lower support assembly. The lower support assembly is configured to support the vertical support assembly on the ground surface. The I-beam support system is configured to selectively transition between a closed configuration and an open configuration. The closed configuration comprises the fastener assembly holding the two sides around a portion of the I-beam. The open configuration comprises the two sides unconnected at a distal end of the beam clamp arm, each among the vertical support assembly comprise an upper end adjusting support.

Insulated panels having suitable surface members separated by an inner layer of insulated foam are used for the walls and as structural members for the floor and roof of a building structure. A rigid frame supports the wall, floor and roof insulated panels. The wall insulated panels are supported on the exterior of the frame by rigid brackets with the insulated panels being suitably flashed or capped.

A system for providing an angled construction or bent beam construction. Such system may include a first beam comprising a first elongated beam segment having a first interlocking joint portion at one end, and a second beam comprising a second elongated beam segment having a second interlocking joint at one end, wherein the first interlocking joint portion is configured to rotatably couple to the second interlocking joint to form a rotatable joint such that the angle between the first beam and the second beam is adjustable.

A mezzanine system includes a column extending vertically and a beam extending horizontally from the column. The beam is fixed to the column by a first bracket such that the beam is horizontally supported by a support portion of the first bracket and vertically braced by a brace portion of the first bracket. The mezzanine system also includes a joist extending horizontally from the beam and fixed to the beam by a second bracket such that the joist is horizontally supported by a support portion of the second bracket and vertically braced by a brace portion of the second bracket. A joint portion of the first bracket is welded to the column, and a joint portion of the second bracket is welded to the beam. The beam is fastened to the first bracket, and the joist is fastened to the second bracket.