A structural plan shows a column designated as 'HSS8x8x1/4'. What type of structural member is this?
Correct Answer
A) Hollow structural section
HSS stands for Hollow Structural Section, which is a square or rectangular steel tube. The designation 8x8x1/4 indicates an 8-inch by 8-inch square tube with 1/4-inch wall thickness.
Why This Is the Correct Answer
HSS is the standard abbreviation for Hollow Structural Section in structural engineering and construction. These are steel tubes that can be square, rectangular, or round, manufactured specifically for structural applications. The designation HSS8x8x1/4 follows the standard naming convention where the first two numbers indicate the outer dimensions (8 inches by 8 inches) and the last number indicates the wall thickness (1/4 inch).
Why the Other Options Are Wrong
Option B: Heavy structural support
Heavy structural support is a general descriptive term that could apply to many types of structural members. It doesn't specifically identify the type of member, whereas HSS is a precise technical designation for hollow structural sections.
Option D: High-strength steel
While HSS members are made of steel, 'hot-rolled steel section' refers to the manufacturing process, not the specific type of structural member. Hot-rolled sections include I-beams, channels, and angles, but HSS specifically denotes hollow sections.
Memory Technique
Remember 'HSS = Hollow Steel Square/rectangular' - the H always means Hollow, and the dimensions that follow tell you it's a tube with those outer dimensions and wall thickness.
Reference Hint
Look up structural steel designations in the Steel Construction Manual (AISC) or the structural drawings section of construction reference materials.
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