how many rivets are there in the sydney harbour bridge?
341945
The total weight of the Bridge is 52,800 tonnes, and six million hand-driven rivets hold the Bridge together.
867931
Hi lok rivets are made from alloy steel, stainless steel, or titanium (maybe aluminum hi-loks exist but I have never come across such).\n\nConfigurations include shear head or tension head and can be flush (countersunk head) or protruding head.\n\nBlind Hi-loks also exist.\n\nYou should note, that 'hi-lok' is a brand name like kleenex, it has become so common that it is used as a word, but refers to shear pins.\n\nFor full specs visit:\n\nhttp://www.hi-shear.com/fastenermain.html\n\nhttp://www.huck.com/aerospace/index.html\n\nhttp://www.textronfasteningsystems.com/aerospace/\n\nhttp://www.3m.com/US/auto_marine_aero/aero/\n\nor\n\nhttp://www.loctiteaero.com/
954433
There are 14 cables on the bridge. You can count the number of nubs on the tower, this is where the cables attach.
491748
Construction\nConstruction started May 1914 and in 1916 it was opened to the public. At the time it was the world's largest pier, 292 ft wide and 3000ft long (89m x 914m).\n\nThe pier was designed as a shipping and entertainment area. In its first decade, the Municipal Pier was successfully attracting both visitors and ships. It was also temporarily used as a military facility during the first world war.\n\n\nDecline\nBy the end of the 1920s, the Navy Pier's success started to decline. The introduction of cars and the opening of movie theaters created more competition for the Pier. Shipping started to decline in the 1930s due to the depression and the competition of transportation by trucks.\n\n\nNavy Pier\nIn 1927 the pier was renamed Navy Pier in honor of World War I veterans. It would turn out to be a prophetic name change, as the Navy Pier served as a naval training facility during the second World War. After the war it served as the Chicago branch of the University of Illinois. In 1965 the university moved to its new location and the Navy Pier started to decay.\n\n\nRedevelopment\nThe first step in the redevelopment of the Navy Pier was the 1976 restoration by Jerome R. Butler, Jr. of the Auditorium building at the eastern end of the pier. One year later it was designated a Chicago Landmark. Another step to the redevelopment of the Navy Pier was taken in 1989, when the city of Chicago and the State of Illinois installed the Metropolitan Pier & Exposition authority. At the same time they committed 150 million dollar for reconstruction of the pier as a recreational center. The renovation by Benjamin Thompson & associates started in 1992 and was completed in 1994. The result is a very successful recreational center next to Chicago's downtown area. With many attractions and 50 acres of parks and gardens It attracts more than 8 million visitors each year. \n\n\nHeadhouse & Auditorium\nThe two major buildings on the Navy Pier, Headhouse and Auditorium - both designed by the architect Charles Summer Frost and constructed in 1916 - have survived its ups and downs.\n\nThe most western building, a brick and terra cotta building with two prominent towers is the Navy Pier Headhouse. The name was derived from the area, which at the time was known as the Headlands. Each tower housed a huge 2-million liter tank for the fire sprinkler system. The Headhouse is now home to Chicago's children museum. At the western side of the building is the recent 19acre Gateway Park, featuring a modern, computerized granite fountain with 240 jets.\n\nAt the other end of the pier is the Auditorium, also known as the Hall. This beautiful building with a magnificent Grand Ballroom measures 138 ft by 150 ft (42m x 48m) and has a 100ft (30m) high half-domed ceiling.\n\n\nAttractions\nThe Navy Pier is home to many attractions, some may vary depending on the season. For a comprehensive list, prices and schedules have a look at Navy Pier's own website: www.navypier.com. Here's an overview of attractions found at the pier:\n\n- The most eye-catching is the 148 ft Ferris Wheel. It was modeled after the first ferris wheel built for the 1893 World Columbian Exposition.\n\n- Near the Ferris Wheel is a 44ft high musical carousel with 36 hand-painted animals.\n\n- The skyline stage, a 100ft high vaulted roof structure, is used as an ice skating rink during wintertime and as a 1500-seat theater during summer.\n\n- The Navy Pier features two museums: the Children's museum (www.chichildrensmuseum.org) and the Smith museum of Stained Glass Windows, which opened in 2000.\n\n- A 7 story Shakespeare theater complex with a 525 seat theater is another recent addition to the Navy Pier.\n\n- Other attractions are an 18 hole miniature golf course, a funhouse maze, a 40ft high wave swinger and an IMAX theater.\n\n- The Navy Pier is also a starting point for many boat trips. You have ample choice: You can take a trip on a 148ft high, four-masted schooner
47884
The Akashi Kaikyo bridge in Japan takes the title, with a main span of 1,991 meters (or 6,532 feet). There are bridges that actually cover longer distances, especially in the cable-stayed category, but the general rule in judging record-breaking bridges seems to be to consider the longest span, or the longest point-to-point connection without a pier or arch underneath.
656402
there are quite a lot of them :)\n\ntry this http://www.island.net/~rjbw/Opindex.html
834752
Hope this info helps\n\nThe girders are made from steel (79% imported from England and 21% from Australian sources). The pylons are made of concrete faced in granite, which was quarried near Moruya, 300km from Sydney. Around 6 million rivets and 52,800 tonnes of steelwork and 17,000 cubic metres of granite have gone into the construction of the Bridge. The bridge took 8 years to build.
532387
Which harbour bridge are you talking about? My guess is that no matter which large harbour bridge you are talking about, they are massive structures, and as such command a lot of visual space, and therefore become famous.  Eiffel tower, because of its mass, statue of Liberty, Sydney or Auckland harbour bridges, to name just a few large man made objects, because of their size tend to be more famous than say a small object crossing a creek, say
674614
A PBS video of the WTC construction using self-jacking cranes is shown at the ref. 1 site. This is part of the transcript:\nIn August, 1968 actual steel construction began. Kangaroo cranes imported from Australia were used for the first time in the United States. The cranes were assembled on top of the core columns. Each could lift 60 tons at a time. They would be the driving force behind the towers' construction. The cranes had the ability to jack themselves up 36 feet at a jump. As the walls grew to the height of a crane, the crane would hoist itself up, a neighboring crane would swing core columns into place beneath it, and construction would continue.\nAlso check out ref. 2 for some useful diagrams.
457046
Hi I did a search on Yahoo and found this path:\nhttp://www.tacsafety.com.au/jsp/content/NavigationController.do?areaID=12&tierID=1&navID=12348A44&navLink=null&pageID=168\n\nIt showed some stats and some numbers relating to it. Try it :)
1111141
http://www.osti.gov/bridge/purl.cover.jsp?purl=/10142986-5y0FRa/native/
499307
Looks like you have a Wheatstone bridge. Why don't you try Wikipedia.\n\nhttp://en.wikipedia.org/wiki/Wheatstone_bridge
508703
Its possible usually the rivets are brass or copper alloy, if that helps.
1037524
it looks like there are many different shapes, squares, triangles, trapezoids...\n\nhttp://www.greatbuildings.com/buildings/Sydney_Opera.html\nclick on picture of exterior
1047803
an agreement to built the 'meaty' part of a structure
795507
Garndiffaith viaduct, constructed by John Gardner 1878\n\nCheck out the link below.\nIt was the best i could find .\n\nHave a nice day ...\n☺☺☺
881549
Here's three including a full length\n\nhttp://www.encyclopedia-titanica.org/biography/324/\n\nEasy enough to find with a one second search!