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Peake and fellow astronaut Tim Kopra were charged with the primary task of replacing a defective voltage regulator, a box the size of a small suitcase attached to the far end of a long truss extending out on the starboard side of the International Space Station.
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"Faced with the difficulties of building to unprecedented heights, the engineers employed an innovative structural model: a rigid 'hollow tube' of closely spaced steel columns with floor trusses extending across a central core," according to an article about the building on the Skyscraper Museum's Web site.
The notion of the truss was extended from timber to metal.
In 1842 he obtained a patent for an improvement in the Howe truss, incorporating a curved timber extending from each buttress to the centre of the truss.
Whipple's truss bridge design incorporated double-intersection diagonals into the standard Pratt truss, thus allowing the diagonals to extend across two truss bays.
For a large section of it, he thanked his ministers: Edward Timpson for helping children with special needs; Liz Truss for shaking up childcare, school meals and the exam system; John Nash for extending the free schools and academies programme; and former minister Nick Gibb for championing reading in schools.
The central span rests on the cantilevered arms extending from the outer spans; it carries vertical loads like a simply supported beam or a truss that is, by tension forces in the lower chords and compression in the upper chords.
"Instead of proposing yet more cruelty to animals, why will she not look at extending the Act to grouse shooting and hare coursing, which also are cruel and hugely opposed in this country?" Ms Lucas's suggestion was dismissed by Ms Truss, who described the Hunting Act as a "mistake".
The bridge's truss structure exhibits a double-intersection configuration, constructed of 14 bays, each measuring approximately 11 feet wide and 23 feet in height, with the diagonals extending across two bays each.
The assembly operations became even more complex when a solar array wing (SAW) on the relocated Port-6 (P6) truss segment ripped while being extended.
The steel truss continued to be used and was extended to three dimensions to form space trusses.
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