Composite structural element, a structure including the composite structural element, and a method of forming the composite structural element

A structure formed of a plurality of structural elements connected to one another, the plurality of structural elements comprising a first composite structural element, wherein the first composite structural element includes:

• a concrete member having a first end, a second end, and a first elongated body extending between the first and second ends thereof, the first elongated body having a first length between the first and second ends thereof;
• and
• a hollow member having a first open end, a second open end, and a second elongated body extending between the first and second open ends thereof, the second elongated body having a second length that is shorter than the first length, the second elongated body covering the first elongated body along the second length thereof,
• wherein the second length of the second elongated body of the hollow member covers about 50% of the first length of the first elongated body of the concrete member,
• wherein the second elongated body is made of a metal.

A method of forming a composite structural element, the method comprising:

• creating a formwork, the formwork forming an interior space configured to receive concrete in fluid form therein, the interior space having a first length and a cross-section defining a cross-section of a concrete beam to be formed therein;
• disposing a hollow member in the interior space of the formwork, the hollow member having a first open end, a second open end, and an elongated body extending between the first and second open ends thereof, the elongated body of the hollow member having a second length between the first and second open ends thereof, the second length being shorter than the first length;
• and
• pouring concrete in fluid form in the interior space of the formwork to at least partially fill an interior of the hollow member and the interior space of the formwork with the concrete in fluid form,
• wherein the second length of the elongated body of the hollow member ranges from about 30% to about 70% of the first length of the interior space of the formwork.