Which statement describes the dimensional order for rectangular hollow structural sections (HSS)?

Which statement describes the dimensional order for rectangular hollow structural sections (HSS)?

• A. Height x Width x Thickness
• B. Width x Height x Thickness
• C. Thickness x Height x Width
• D. Height x Thickness x Width

Answer: (A)

Rectangular HSS dimensions are written with the exterior height first, then the exterior width, and finally the wall thickness. This order reflects describing the hollow rectangle by its vertical size, its horizontal size, and then how thick the walls are. So the standard notation is Height x Width x Thickness. For example, a section 8 inches tall, 4 inches wide, with 0.5 inch wall thickness is denoted 8 x 4 x 0.5. Other sequences would mix up the primary exterior dimensions or place thickness in a different position, which would not align with how these sections are specified in drawings and catalogs.

Rectangular HSS dimensions are written with the exterior height first, then the exterior width, and finally the wall thickness. This order reflects describing the hollow rectangle by its vertical size, its horizontal size, and then how thick the walls are. So the standard notation is Height x Width x Thickness. For example, a section 8 inches tall, 4 inches wide, with 0.5 inch wall thickness is denoted 8 x 4 x 0.5. Other sequences would mix up the primary exterior dimensions or place thickness in a different position, which would not align with how these sections are specified in drawings and catalogs.