Special Reports

By the numbers

Thickness of steel on top of deck Total length of welds required to join deck sections Number of bolts required to join deck sections Number of bolts in typical joint Minimum force required to tighten typical 7/8-inch bolt Minimum clearance between deck sections and tower legs Temperature the deck must be preheated to before welding Number of welding passes necessary to fill a gap between sections Wind speed at which Tacoma Narrows Constructors shuts down bolting operations Inches of rain that fell on the construction site during November and December Amount each deck section shrinks from the heat of welding

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