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A hot-rolled HSS-box section cut open with a bandsaw, demonstrating residual stress. A hollow structural section (HSS) is a type of metal profile with a hollow cross section. The term is used predominantly in the United States, or other countries which follow US construction or engineering terminology.
A box girder bridge, or box section bridge, is a bridge in which the main beams comprise girders in the shape of a hollow box. The box girder normally comprises prestressed concrete, structural steel, or a composite of steel and reinforced concrete. The box is typically rectangular or trapezoidal in cross-section. Box girder bridges are ...
[579] [580] [581] Note that the Ricoh AF Rikenon 50mm f/2 (Japan) lens of 1980 had a self-contained passive electronic rangefinder AF system in a bulky top-mounted box and was the first interchangeable autofocus SLR lens (for any Pentax K mount 35 mm SLR). [582] [583] [584] 1981 Sigma 21-35mm f/3.5-4 (Japan): first super-wide angle zoom lens ...
The old Britannia Bridge with train track inside the box-girder tunnel Section of the original tubular Britannia Bridge The patent curved and tapered box girder jib of a Fairbairn steam crane. A box girder or tubular girder (or box beam) is a girder that forms an enclosed tube with multiple walls, as opposed to an Ɪ-or H-beam.
As a necessary means for visually conveying ideas, technical drawing has been in one form or another a part of human history since antiquity. The use of these early drawings was to express architectural and engineering concepts for large cultural structures: the temples, monuments, and public infrastructure.
Below are the primetime rankers for broadcast, cable and premium cable networks in 2024, among total viewers (as well as the top 50 list in adults 18-49).
Jennifer Lyn Bernhard and her father Stevie Ray Smith were killed during an alleged attack by Shuvonne Vinson, Gregory Callhan and Keith Finley, per police
The box was moved to the 31st floor of the Vern Riffe State Office Tower (which had its own peregrines) in 2017 to prevent incidents during the renovation of the building's exterior, though the falcons nested in a commercial building on State Street instead. [41] [42] [43] One of the hatchlings at the tower, named Buckeye, lived from 1996 to 2009.