October_1965 — Page 10

on each side, and safety and parapet strips which are 6 ft. wide on one side and 11 ft. wide on the other.

In cross-section the superstructure consists of two structurally independent box beams. Each cantilever arm of the main span is 341 ft. in length. The construction depth is 34 ft. at the river piers, decreasing to 12 ft. 6 in. at the centre of the main span and to 11 ft. at the ends of the bridge. In the main part of the bridge the deck slab is 11 in. thick, and the webs vary between 12 and 15 in. in thickness. The thickness of the bottom slab of the box section increases from 6 in. at the centre of the main span to about 8 ft. at the river piers.

The superstructure is prestressed in the longitudinal and transverse directions with 32 mm. diameter steel bars. In addition to the longitudinal prestress, the webs are provided with an oblique prestress at 45 degrees over near- ly the whole length of the bridge.

Four construction carriages, each 48 ft. wide, were used in building the bridge. Starting from a river pier, they proceeded in opposite directions towards the land

and towards the centre of the main span respectively as each 11 ft. 6 in. length of superstructure was cast. The bridge is built in two independent halves longitudin- ally, and the carriages moved side by side and operated independently of each other.

The bridge was designed by Dr. Ulrich Finsterwalder, a member of the firm of Dyckerhoff and Widmann KG. The consulting architect was Dipl. Ing. Gerd Lohmer, of Cologne.

Australian Film on Careers

in Building

A DOCUMENTARY film aimed at attracting boys into building apprenticeship has been produced under the sponsorship of a Sydney firm, H. C. Sleigh, Ltd. Entitled "Careers in Building", it will be released later this year for show- ing by building associations.

The film, photographed in Technicolour, traces the progress on a large commercial building, from the draw- ing board stage to the final opening. Every trade, its role and importance is depicted.

This 18-storey office building is to be erected in Newark, New Jersey, USA, by the George A. Fuller Co. of New York, in as- sociation with The Mutual Benefit Life Insurance Co. Costing more than US$5 million, it will contain about 300,000 sq. ft. of floor space. The architects are Frank Grad and Sons, and the consulting architects are Eggers and Higgins.

54

PRODUCTION UP

TH

COSTS DOWN

with the VERSATILE

Manufactured by

BABCOCK

Licensed and designed by

WEITZ

X1190

TOWER CRANE

Where BABCOCK WEITZ tower cranes go up, build- ing costs come down.

The low price is just one of the many advantages of the new Babcock Weitz X1190 30 ton/metre universal crane, British-built by Babcock & Wilcox.

If you are concerned with the building of medium size flats or office blocks or with light civil engineering, consider these features of the X1190:

CAPACITY-1 ton at 98 ft. 6 in. radius to 2 tons at 54 ft. radius.

VERSATILE—Easily adapted for static travelling or climbing installation.

EASY ERECTION-well-proved patented mechanical system ensures speedy, safe erection. Simultaneous basculing and telescoping saves time and space. Structural parts interchangeable.

MINIMUM SPACE REQUIRED by the compact tower base.

AFTER-SALES SERVICE-Every Babcock Weitz crane is backed by first-class service for erection, maintenance, inspection and technical advice.

For further details, write or phone : BABCOCK & WILCOX (OPERATIONS) LTD. CONSTRUCTION EQUIPMENT DEPARTMENT 165 GREAT DOVER ST., LONDON S.E.1. TELEPHONE: HOP 5500. MALAYSIA : Jardine Waugh Organisation — *Singapore, Kuala

Lumpur, Kuching, Jesselton.

THAILAND: Jardine Waugh Organisation, Bangkok, HONG KONG : Jardine Engineering Corporation.

*Cranes in stock, erection and service facilities locally available.

Far East Architect & Builder October, 1965

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