The invention provides a deformed reinforcing bar, a truss structure and a floor module structure. The deformed reinforcing bar comprises an accommodating recess so that when used with a strut member to construct the truss structure of the invention as a top or bottom chord, the bending regions of the strut member can be fitted into the accommodating recess of the deformed reinforcing bar to simplify the welding process to achieve consistent welding quality as well as enhance the strength of the truss structure after pouring concrete. Additional transverse ribs and concave marks can be added to the surface of the deformed reinforcing bar and the surface of the accommodating recess to enhance bonding capability with concrete. The floor module structure can be assembled with a plurality of truss structure.

A construction system definable in terms of an X, Y, and Z coordinate axes which provides a first part having a hollow three-walled web elongate in the Z axis, having a series of rigid securement flaps on the upper Z edges of the elongate Z axis member; and a second part having at least one open end for complemental engagement of the first part wherein the second part may fit over distal ends of said first part in which a cross-section of the second part is generally that of the first part, but wide and tall enough to allow the first part to slip within the second part, and said second part having an opposite end of said opening, wherein said second part securing the first part to a structural support.

In one implementation, a metal deck is provided that includes a plurality of deck components formed in a contiguous metal sheet. Each of the deck components includes a plurality of folded ribs formed along the length of the metal deck. Each of the plurality of folded ribs are configured such that one or more trusses of a building may fit between the plurality of folded ribs. The metal deck may be used to complete the structural diaphragm without using concrete.

In one implementation, a metal deck is provided that includes a plurality of deck components formed in a contiguous metal sheet. Each of the deck components includes a plurality of folded ribs formed along the length of the metal deck. Each of the plurality of folded ribs are configured such that one or more trusses of a building may fit between the plurality of folded ribs. The metal deck may be used to complete the structural diaphragm without using concrete.

A construction system definable in terms of an X, Y, and Z coordinate axes which provides a first part having a hollow four-walled web elongate in the Z axis, having a series of securement flaps along the edges of the upper surface of the elongate Z axis member; and a second part having at least one open end for complemental engagement of the first part wherein the second part may fit over distal ends of said first part in which a cross-section of the second part is generally that of the first part, but wide and tall enough to allow the first part to slip within the second part, and said second part having an opposite end of said opening, wherein said second part securing the first part to a structural support.

A construction system definable in terms of an X, Y, and Z coordinate axes which provides a first part having a hollow three-walled web elongate in the Z axis, having a series series of securement brackets with geometric cut-outs on the upper Z edges of the elongate Z axis member; and a second part having at least one open end for complemental engagement of the first part wherein the second part may fit over distal ends of said first part in which a cross-section of the second part is generally that of the first part, but wide and tall enough to allow the first part to slip within the second part, and said second part having an opposite end of said opening, wherein said second part securing the first part to a structural support.

A construction system definable in terms of an X, Y, and Z coordinate axes which provides a first part having a hollow four-walled web elongate in the Z axis, having a securement flange on the upper XZ base of the elongate Z axis member; and a second part having at least one open end for complemental engagement of the first part wherein the second part may fit over distal ends of said first part in which a cross-section of the second part is generally that of the first part, but wide and tall enough to allow the first part to slip within the second part, and said second part having an opposite end of said opening, wherein said second part securing the first part to a structural support.

A construction system definable in terms of an X, Y, and Z coordinate axes which provides a first part having a hollow three-walled web elongate in the Z axis, having a series of rigid securement flaps on the upper Z edges of the elongate Z axis member; and a second part having at least one open end for complemental engagement of the first part wherein the second part may fit over distal ends of said first part in which a cross-section of the second part is generally that of the first part, but wide and tall enough to allow the first part to slip within the second part, and said second part having an opposite end of said opening, wherein said second part securing the first part to a structural support.

A method for forming a plurality of beams connected in series is provided. The method comprises the following steps: providing a plurality of columns; providing a plurality of pre-assembled bar combinations, wherein each of the plurality of pre-assembled bar combinations comprises a plurality of lower main bars and a plurality of lower stirrups, and at least one end of the plurality of the lower main bars has connection sections extending beyond the plurality of lower stirrups; hoisting each of the bar combinations so that the two ends thereof are placed on top of two adjacent columns of the plurality of columns and the connection sections of the plurality of lower main bars of adjacent plurality of bar combinations overlap; and connecting the plurality of connection sections of the plurality of lower main bars of the adjacent plurality of bar combinations.

The present invention relates to a grid deck with shear-resisting plates and the assembly of the grid decks. The shear-resisting plates are pre-cast in the grid deck and protrude from the side surfaces thereof. When the grid decks with shear-resisting plates are assembled, they are laid on the beams with the shear-resisting plates contacting the beams and without the grid decks contacting the beams.