The 2.5 km. (1.5 mile) Forth Railway Bridge, the world’s first major steel bridge, with its gigantic girder spans of 521 m. (1710 ft.) ranks as one of the great feats of civilization. It was begun in 1883 and formally completed on 4 March 1890 when HRH Edward Prince of Wales tapped into place a ‘golden’ rivet.
Tancred–Arrol, constructed the bridge, robustly designed in the aftermath of the Tay Bridge disaster by civil engineers Sir John Fowler and Benjamin Baker. The balanced cantilever principle was adopted. The main crossing comprises tubular struts and lattice-girder ties in three double-cantilevers each connected by 105 m. (345 ft.) ‘suspended’ girder spans resting on the cantilever ends and secured by man-sized pins. The outside double-cantilever shoreward ends carry weights of about 1000 tonnes to counter-balance half the weight of the suspended span and live load.
This concept is readily understood from Baker’s ‘human cantilever’ model with his assistant Kaichi Watanabe representing the live load. The pull in his supporters arms indicates the tension in the ties and the push in the lower struts the compression in the tubes.
Each of the 110 m. (361 ft.) high double-cantilevers is supported on well-founded granite faced piers. The bridge’s construction involved the employment of 4,000 men at times, the use of 54,000 tonnes of steel and driving 6,500,000 rivets. Its total cost was £3,200,000 (~£235,000,000 today).
Tancred–Arrol, constructed the bridge, robustly designed in the aftermath of the Tay Bridge disaster by civil engineers Sir John Fowler and Benjamin Baker. The balanced cantilever principle was adopted. The main crossing comprises tubular struts and lattice-girder ties in three double-cantilevers each connected by 105 m. (345 ft.) ‘suspended’ girder spans resting on the cantilever ends and secured by man-sized pins. The outside double-cantilever shoreward ends carry weights of about 1000 tonnes to counter-balance half the weight of the suspended span and live load.
This concept is readily understood from Baker’s ‘human cantilever’ model with his assistant Kaichi Watanabe representing the live load. The pull in his supporters arms indicates the tension in the ties and the push in the lower struts the compression in the tubes.
Each of the 110 m. (361 ft.) high double-cantilevers is supported on well-founded granite faced piers. The bridge’s construction involved the employment of 4,000 men at times, the use of 54,000 tonnes of steel and driving 6,500,000 rivets. Its total cost was £3,200,000 (~£235,000,000 today).
by AndersOon1992 August 10, 2012
Get the Forth Rail Bridge mug.by Blackphoenix101 February 20, 2020
Get the Crossed the bridge mug.When you lie on your back between the chair and the ottoman and your lover straddles you and pees on you while reading the newspaper
by tim-tim April 7, 2004
Get the golden gate bridge mug.The piece of skin residing between your asshole and cock n' balls. Some would say that it forms a bridge between your ass and balls. Originated from preppy white kids with step hair cuts from Chicago.
by Sargento April 1, 2004
Get the Yoni Bridge mug.by Rasta-Clat November 13, 2004
Get the burn a bridge mug.A fake fad created by a bunch of bored, horny, and lonely teenagers attempting to troll but failing miserably.
Some uninteresting lameass attempted to start a fake trend called "bikini bridge" but then he got distracted by gay midget porn.
by FuckOffGod December 9, 2016
Get the bikini bridge mug.The mythical creature Smeagol from Lord of the Rings, combined with Bria Marshall to form the creature "Breegol". Still uncannily resembles Smeagol.
"Hey!! It's Breegol!"
by Ry-ahn! August 19, 2003
Get the Breegol mug.