Question

Based on the following passage, why are space frames almost always made of steel struts?

The space frame is a three-dimensional truss type, almost always made of steel struts of the same length arranged in a triangular pattern,
needing few vertical supports. It can span large spaces and is useful in warehouses, convention centers, shopping centers, and movie
theaters, for example. The shape allows the roof to handle both tension and compression well through its variously angled components.
O They must handle both tension and compression.
O They have struts arranged in a triangular pattern.
O They must span large spaces without vertical supports.
O They are three-dimensional.

Answer 1

Space frames use steel struts because steel possesses both high tensile and compressive strength, ensuring that it can handle the forces that large structures must bear, and its properties are compatible with other construction materials.

Step-by-step explanation:

Space frames are almost always made of steel struts because steel is uniquely suited to handle the structural demands of these large, spanning constructs. Steel is the material of choice because it has high tensile and compressive strength, which is essential for withstanding the forces acting upon the frame. The triangular arrangement of the struts in a space frame ensures that loads are efficiently distributed, minimizing the need for vertical supports and allowing them to span vast areas such as those found in warehouses and auditoriums, where open space is advantageous. Moreover, the properties of steel, such as its coefficient of linear expansion being similar to that of concrete, make it favorable for integration with other structural materials, thus ensuring stability and integrity. Steel's attributes such as strength, durability, and resistance to corrosion contribute to its selectability for creating robust and long-lasting space frames.