A structural steel member connecting assembly includes a first connecting member and a second connecting member. The first connecting member is pivotally connected to a positioning portion of a first structural steel member and therefore can be swung. The second connecting member is pivotally connected to the first connecting member such that the two connecting members are rotatable with respect to each other. The second connecting member has a fixing portion coupled with a second structural steel member such that the longitudinal directions of the two structural steel members intersect. With the second connecting member rotatable with respect to the first connecting member, the installation angles of the two structural steel members can be easily changed in order to make a stable engineering structure. The structural steel member connecting assembly features convenience of, and flexibility in, use and has extensive applications.

A trussed collapsible tubular mast includes a deformable beam having an extended state, a flattened state, and a rolled state, where a stiffness and strength of the deformable beam in the extended state is greater than a different stiffness and a different strength of the deformable beam in the flattened state. At least one collapsible tubular mast wall has a plurality of truss members of a first material having a first material thickness. At least one truss member is disposed substantially perpendicular to a longitudinal axis of the trussed collapsible tubular mast. Disposed between the truss members is a wall area of a second material thickness less thick than the first material thickness.

A trussed joist (such as shown in FIGS. 1, 2, and 3) is provided which includes an upper chord and a lower chord connected to each other by descending and ascending diagonals making triangular or trapezoid openings across the joist. The joist is supported at lower chord not matching the truss node point or supported at the upper chord whereby the joist is unworkable. At least one reinforcing is fixed at the faces of the chords by dowel fasteners. The reinforcing element overlaps at least one truss node point.

Various embodiments are described herein for mobile units having an interior defined by fewer than four side walls, the mobile units being adapted to be interconnected with at least one like or different mobile unit, the at least one like or different mobile unit having fewer than four side walls, thereby to jointly form a large interior room with a longitudinal support structure for the roof structure of at least one of the mobile units.

A computer program product comprising: accessing a model of a building, wherein the model is comprised of a plurality of assemblies, wherein the assemblies are comprised of a plurality of members; detecting the assemblies which are identified as roof trusses, wherein the roof truss is identified by the specific members and member internal interfaces and the member properties; analyzing the roof trusses to determine if a roof truss has an external interface with another roof truss; isolating the roof trusses and the plurality of members; and analyzing each of the members of the roof trusses which have external interfaces with other members, wherein the interface is analyzed to determine if the interface is conflicting, wherein a conflicting interface is one where the actual values of the members are inconsistent with a required value.

A nacelle of a wind turbine is disclosed. The nacelle comprises a rear frame structure (1) comprising a plurality of truss assemblies (2) being connected to each other at connecting regions (3). At least one of the truss assemblies (2) comprises at least one beam structure (4), the beam structure (4) comprising at 5 least a first beam member (5) and a second beam member (6) being arranged substantially in parallel to each other, thereby defining a longitudinal direction of the beam structure (4). The first (5) and the second (6) beam members are retained to each other by a retaining means (12). The retaining means (12) is configured to enable the first beam member (5) to slide relative to the second 10 beam member (6) along the longitudinal direction, e.g. by means of oblong slits (11) formed in the first beam members (5) and bolts (12) extending through the oblong slits (11) and being attached to the second beam members (6).

A volumetric modular unit constructed at a modular unit factory and shipped assembled to a modular building project site is disclosed. A modular building constructed from shipped volumetric modular units is also disclosed. Features of a volumetric modular unit and modular building are designed to account for and leverage traditional building practices. Shipping constraints often dictate volumetric modular unit design constraints. The volumetric modular unit and modular constructed building addresses both design needs and shipping constraints to leverage more economical resources available at a volumetric modular unit manufacturing plant.

Various implementations described herein are directed to a load bearing ledger fitting, a modular header beam, a perimeter safety deck, a multi-purpose bearing plate, and a mega-shore bearing plate of an integrated construction system.

The invention concerns a truss structure including a plurality of longitudinal members extending parallel to one another in a main extension direction and crossmembers (9) distributed in the main extension direction to connect the longitudinal members mechanically two-by-two, forming a plurality of polygons (11) each contained in a plane perpendicular to the main extension direction.

According to the invention, each crossmember (9) connecting two longitudinal members includes a first half-crossmember (9a) with a first end connected to one of the two longitudinal members so as to be able to pivot about a first axis (X1-X′1) and a second half-crossmember (9b) a first end of which is connected to the other of the two longitudinal members so as to be able to pivot about a second axis (X2-X′2). The two half-crossmembers are connected to one another by an articulation hinge (13) allowing relative rotation of the two half-crossmembers (9a, 9b) about a third axis (X3-X′3). The first, second and third axes are parallel to one another and orthogonal to the main extension direction, allowing the truss structure and each crossmember (9) to pass from a deployed position to a folded position in which the first and the second half-crossmembers (9a, 9b) of each crossmember (9) extend substantially parallel one alongside the other in said main extension direction.

Various implementations described herein are directed to a load bearing ledger fitting, a modular header beam, a perimeter safety deck, a multi-purpose bearing plate, and a mega-shore bearing plate of an integrated construction system.