Grandview Commerce High School - Annual Yearbook (Vancouver, British Columbia Canada)

Page 44 text:

COMMERCE ANNUAL the erection progresses, and then taken down. ln each tower there are approxi- mately 45,000 rivets. Sixty-one individual wire ropes, li inches in diameter, and 5,500 feet in length, extending from the North to South anchorage, make up the two main cab- les. These ropes, ISE inches in diameter, are being made in Montreal, where they are pre-stressed to get the absolute accurate checking of each piece of wire for physical accuracy, wound on reels, and shipped here, Fifty-seven million feet or 9,000 miles of cable will be usedg this sum equalling the length of about three times the distance fom here to Halifax. The cables will terminate in the anchors in two sets of 7 steel discs, four inches thickg each of the discs being 50 inches in diameter. The maximum pull on one of these cables is 8,000 tons, or equal to the pull of 6,000 teams of horses reaching from Vancouver to New Westminster. But to break the cables it would require 36, 008 Tforses pulling on each one, The bridge will be lighted by sodium vapor lamps and th-ere will also be beacons erected on each tower to mark them at night for safety in air trans- portation. When the Lions' Gate Bridge is completed, steel towers will rise to a height of 360 feet. A i500 foot span of steel will cross Burrard Inlet at a height of more than 200 feet above the water level. Nature decreed that North and West Vancouver must be separated forever from Vancouver City by a gap of water, but man's skill and knowledge has bridged that gap with a triumplaal mass of steel and concrete-The Lions' Gate Bridge. Miriam Pohjola. -...LQ-.4-Q-.-.... A GLIMPSE OF HOLLYWOOD Who has not longed to see some of Hollywood's stars, or, equally as excit- ing, a movie set? Had you been to Mount Baker thc middle of last summer, your longing would certainly have been satisfied. Here they were 'shooting' The Barrier. On first glance, the scenery seemed natural enoughg a huge lodge, a church, log cabins, and a primitive grave-yard. On closer observation, however, you would find that the log cabins were built out of ordinary boards cleverly touched up by Hollywood painters. The lodge, church, and grave-yard were merely temp-

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COMMERCE ANNUAL THE LIONS' GATE BRIDGE ,- ' .. . t ' - ' - ' - , 'x-4-iff' 'N ,Nh ,iff-?Z'?i i-X--lx 2-.gf -N A 'ff -33''15-f-l7,,k1hQ 1's-.,,qil ?' 'J N 8 ' Mobi iuhifi I 'Ss-.. I1, ' '- ff ? even Q333,ffw 'K 4 if ' , yi ictihgt lfijfelvfa 1 -K -- -e 5 5 gi p --'---2 2 sits., 01- H-'wifi y ,. ' E. 3-gg. ,W .:5',, i-Q' 4 , V - A- rr, --2' ft' 4 , ' 'auf 5 er' - .-r-sf.: -Q JT ',,-,..,f.,, M Wi-i .5 ' 7 ,,,, W, Hwnzgw Y v 1 Rising as the largest suspension bridge of its kind in the British Empire, the Lions' Gate Bridge will he a mighty monument to Vancouvefs ever-growing progressiveness. Spanning the First Narrows at the entrance to Vancouver har- bor, it will give direct connection between Vancouver, and North and West Van- COUVCI' . 15,000 tons of concrete have been poured into each ol the anchors which run back from the two main piers, and from which a greater proportion of the weight of the bridge is suspended. Each anchor is buried 60 feet deep. 20 feet square on IOD, and is as heavy as the combined weight of every man, woman and child, in Vancouver-300,000 people! This block of concrete, resembling a big hoe with two handles, one for each cable, is 614 feet away from the pier in front of it. The sinking and placing of the main piers at each end of the span was one of the most interesting operations. Two caissons or shells Q feet in diameter and 40 feet high, were made oi steel, wood, and concrete on the beach. They were floated off at high tide while they were still light enough, but while these were still being made, two holes inthe sloping rock were made by drilling, blasting, and the dredging away of loose rock. The caissons were then floated into place and ballasted with sufficient concrete to sink them. 10,000 tons of steel are involved in the construction of the bridge-about 8,000 tons in the structure of the span, towers, and viadncts, and about 2,000 tons in the making of the wire rope for the main cables and Suspenders. There will be approximately 850 tons, or about 5,000 feet, of steel in each of the main towers resting on the piers, The towers are erected with the help of a steel creeper which is attached to the permanent structure, hoisted. as

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