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2. ASTM A992 - Wikipedia

   en.wikipedia.org/wiki/ASTM_A992

   ASTM A992. ASTM A992 steel is a structural steel alloy often used in the US for steel wide-flange and I beams. Like other carbon steels, the density of ASTM A992 steel is approximately 7850 kg/m 3 (0.2836 lb/in 3 ). ASTM A992 steel has the following minimum mechanical properties, according to ASTM specification A992/A992M.

3. World Trade Center cross - Wikipedia

   en.wikipedia.org/wiki/World_Trade_Center_cross

   World Trade Center cross. The World Trade Center cross, also known as the Ground Zero cross, is a formation of steel beams found among the debris of the World Trade Center site in Lower Manhattan, New York City, following the September 11 attacks in 2001. This set of beams is so named because it resembles the proportions of a Christian cross.

4. Fatigue (material) - Wikipedia

   en.wikipedia.org/wiki/Fatigue_(material)

   The bright area is caused by sudden fracture. In materials science, fatigue is the initiation and propagation of cracks in a material due to cyclic loading. Once a fatigue crack has initiated, it grows a small amount with each loading cycle, typically producing striations on some parts of the fracture surface.

5. Coupon collector's problem - Wikipedia

   en.wikipedia.org/wiki/Coupon_collector's_problem

   In probability theory, the coupon collector's problem refers to mathematical analysis of "collect all coupons and win" contests. It asks the following question: if each box of a given product (e.g., breakfast cereals) contains a coupon, and there are n different types of coupons, what is the probability that more than t boxes need to be bought ...

6. Weld access hole - Wikipedia

   en.wikipedia.org/wiki/Weld_access_hole

   Also the flanges have been beveled in preparation for welding. The weld access hole or rat hole is a structural engineering technique in which a part of the web of an I-beam or T-beam is cut out at the end or ends of the beam. The hole in the web allows a welder to weld the flange to another part of the structure with a continuous weld the full ...

7. Rumors of American consumer strife are greatly exaggerated ...

   www.aol.com/finance/rumors-american-consumer...

   Per a recent Adobe Analytics report, U.S. consumers spent $331.6 billion shopping online in the first four months of 2024—7% more than last year. And nearly $26 billion of that online spend came ...

8. WestJet cancels hundreds of flights after aircraft mechanics ...

   www.aol.com/finance/westjet-cancels-hundreds...

   Labor negotiations between WestJet, Canada’s second-largest airline, and the Aircraft Mechanics Fraternal Association remain at a standstill after the union called a surprise strike last week ...

9. Bending stiffness - Wikipedia

   en.wikipedia.org/wiki/Bending_stiffness

   Bending stiffness. The bending stiffness ( ) is the resistance of a member against bending deflection/deformation. It is a function of the Young's modulus , the second moment of area of the beam cross-section about the axis of interest, length of the beam and beam boundary condition. Bending stiffness of a beam can analytically be derived from ...