Commonwealth Parkville School - Comet Yearbook (San Juan, Puerto Rico)

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EL CIRCO I' 7 1 . ' yi Everything h I ln -Z is 2 ' , ff? Children'S Wear ' ', -1 5-L V i U' dig. .f-5 r5: .lif'f,i1a1u:1afu1 i 5-P A ' ' I .E-.IIUHLIII '51 , 'FQ '-4 ' I X v? .V -X : If .Q pf L M! ff! I f, IIO6 Ashford Ave. Santurce, P. R. 723-9272 From Tots to Teens non use any ous one aa- usa' noun anno non. :nun on.: For the Youth Today the Largest Selection of Hippie and Psychedelic Items, in P. R. .... L'-Wig Bumper Strips Buttons Decals Incense in sticks, cones, piece, powder or candles. Jewelry Love and Peace Symbols Maltese Cross Mocassins Nehru Shirts and Jackets Posters Psychedelic Paraphernalia Pipes - The Largest Selection in Puerto Rico Q . . . . . . We Also Make to Order -- Buttons, Bumper Strips Pennants and T Shirts, With Your Own Wording or Design THE HIPPIE HEAVEN SHOP IN LAFAYETTE ELECTRONICS PLAZA las AMERICAS I79

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Hydraulic Shifting Jacks Guide Span .IAQ cv- 1 -in H ' - ------ ---- Q .,bv N. M - '... ,. .. -- ,, ,, -- j ., Batching Plant Section on Siipway : L- 1 I 2 3 C 4 D 5 Permanent Piers Numbered 1, 2, 3, 4, 5 Temporary Piers Lettered A, B, C, D 4AboveJ Concrete sections were fabri- cated at hatching plant and moved along slipway to rlver bank where they were joined. Beam was hydraulically jacked across the rlver and, once in place, lowered onto the piers and seated. The Caronl Rlver Bridge is reported to be the largest concrete structure pre- fabricated and jacked in stages to the flnal position. Owner: Republic of Vene- zuela, Corporacion Venezolana 'de Guay- ana. Designers: Prof. Dr.-Ing. F. Leonhardt and Baulng, W. Baur, Stuttgart. Contrac- tors: Consorcio Puente Caroni Venezu- ela, a joint venture including Tuven C.A., Caracas, Ed. Zublln A.G. and C. Baresel A.G., Stuttgart. ' 5 'itii f ..,,..., -li T K' wfi XX - vvuv 2 .,,.. 5 NA fe! sz X X , at n f 1 ff ! , fri? X X V rf' .ff X if 'ef ' f X Y ,ff f Q iw f' ui im ,X s Q , jf f WI vvvv r v Wa: In the mix This bridge was a push-over 'th I ' ' The Caroni River Bridge in Venezuela is unique in bridge construction history. The 1574 ft. long, prefabricated concrete super- structure was cast in 50 sections, joined together, and post-tensioned. The beam was then pushed with hydraulic jacks across the river in 500 separate stages. POZZOLITH was used in the concrete for this bridge to meet critical requirements for on-site production with precise control despite extreme heat and humidity. POZZOLITH helped obtain high strength concrete averaging 5650 psi with a 12.32, coefficient of variation-excellent field con- trol of uniformity for concrete specified at 5000 psi. PozzoLrrH improved the worka- bility and placeability of 6100 cu. yds. of 2 inch slump concrete. lt further provided controlled retardation to prevent unwanted cold joints. You'll find PozzoLiTH specified by engi- neers wherever predictable concrete per- formance is needed. It contributes the same benefits to your run-of-the-job con- crete as it does to critical applications. For detailed information, call your Master Builders field man, or write Master Build- ers, Cfeveland, Ohio 44118 and Toronto 15, Ontario. manufactured only hy MASTER BUILDERS 'POZZOLITH is a registered trademark for Master Builders' water-reducing, set-controlling adrnixture for concrete.

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