1933-07-29 — Page 2

THE STEADY SHIP

EFFECT OF GYROSCOPIC

STABILISER

easily shut off and switched on again it was possible to obtain oh- servations in circumstances is simi- lay as it is possible to get at sen Ever since the gyroscopic ship from 3 to 31 degrees maximum

Without the stabiliser abe relled stabiliser had its chance of proving itself and getting great public at with it working the average total tention by its installation in the roll was three degrees. This is not giant Italian liner Conte di Sayona only a matter of comfort but of thers has been great discussion` as

engineering economy and efficiency to the pros and cons of such an

by keeping both propellers well in interference with the ship's natural the water and preventing any rac- movement on the water which cang as one or other of them lifts,,""

be so unwelcome to some passengers. Firstly, there is the question as to whether it really does its work and secondly, whether there are not attendant disadvantages which will more than outweigh the advantage claimed

+

A reduction in rolling also meant better steering, the deviation from the course laid down, being re- duced from three degrees to ona and a half which again means efficiency and economy.

Question of Strain.

The American Societies of NAVI Architects and Mechanical Engi- As regards the oft-rained ques- neers lost no time in calling a jointtion of straining the ship, all pos- meeting at which the performancesible means were taken to measure of this stabiliser could be described the deflection, elongation and com- and discussed and some very in pression of the structure and these reresting Facts and figures were pre- tests, as far as they went, showed sented"

that the suppression of rolling Rolling, Minimised.

minimised rather than increased As the stabiliser can be very the strain, That is a

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ENGINEERING AND BUILDING

KHEDIVE ISMAIL

BRIDGE

COMPLETED BY DORMAN LONG

THREE NEW THAMES BRIDGES

ARTISTIC ADAPTATION OF FERRO- CONCRETE CONSTRUCTIONAL

METHODS

The new bridge over the Nile in Bridge which was opened by the Cairo known as the Khedive Ismail

King Fuad I of Egypt on the oth instant replaces the old Kasr-oi-Nil Bridge which was completed in 1871 and which owing to the in-Wales formally opened three new creased volume of traffic and bridges afer the Thames at Chis heavier loading due to motor traffic wiek. Twickenham, and Hampton was considered inadequate for pre Court... seat, requirementi.

Early this month the Prince of, ed as similar to the bascules of

Tower Bridge.

In this case the contmetors were

L

Messrs. Aubrey Watson, Ltd., and the contract price was £101,206. Their construction has been made Before the concrete and steel! The new bridge is 1,280-ft. lons necessary by the increasingly diftructure could be proceeded with! and crosses the river in eight cult problem of dealing with the it was necessary to build an almost spans. It is 68-ft. in width and an growing volume of road traffic complete skeleton bridge of timber, electrically operated opening pan which has to pass from one bank for which purpose Canadian Dou is provided for the accommodation of London's river of river traffic, giving two clear The Chiswick and

to the other. glas fr logs and half-timbers sup- passages each of-66-ft.

Twickenham Plied to the contractors by Messie. bridges form linka in a new thor Ashworth Kirk and Co., Ltd., was The designs were prepared by oughfare from Hammersmith to used Dorman Long & Co., Ltd. as EngiTwickenham and beyond, thus ra: neers in conjunction with Sir John lieving opgestion on the Hammer Burnet & Partners as Architects, smith suspension, bridge and the and the structure presents a hand-old stone bridge at Richmond. some appearance which is in keen- ing, with its situation in one of the most picturesque pärts of Cairo

·Between these two points the course of the Thames makes a wide northerly and westerly detour, 80 Special consideration has been that vehicles moving from Ham- given to architectural effect. Themersmith, Bound în a south-westerly abutments are fanked by granite direction for places beyond Twic pylons, at the bases of which stand kenham, had either to keep north the four bronze lions which form of the river for some miles before the only relic of the old bridge turning southwards, or to

Paes which has been incorporated in the through Baruss and Richmond, new design.

both areas unsuitable in many ways for modern traffic conditions. Ornamental staircases leading The new road, after passing var from the approaches to paved ter the Chiswick bridge, cuts across the races on the river banks These piece of land on which is the Old terraces extend under the shore Deer Park and re-cross the river spans and are executed" in granite just below the Richmond railway and marble and provide features of Fridge.

In all, between 900,000 and 1,000,000ft. Board measure of tim- ber, the equivalent of a small forest, was employed in the construction concrete whilst it was setting, for of the framework to support the piling in the river and for the temporary works.

Modern Building Materials, This bridge provides striking evidence of the beauty that can be expressed in modern building The concrete is of a materials. thin lines of red concrete tiles, its shingled bus colour, relieved by texture brought out by wire-brush- known as "Moncon" cast store, ing and bush-hammering. It is

and is the work of the Mono Con- crete Co., Ltd. Various colour

combinations are available in this material, which is now being wide.

a highly ornamental character, The Hampton Court bridge rely used in the construction of

cinemas, blocks of flats, and "other large buildings.

The Spans are of steel in the places a old and narrow iron struc form of elliptical arches and noture which has been a hindrance to structure above dock level impedes heavy traffic for a long time. ItThe whole of the steel bars used the view from the roadway. The links up the Middlesex bank of the for reinforcement, to British stan bridge is carried on granite faced river with the new road from dard specification, on both Hamp piers, while the balustrading is Hampton Court to Eaher. constructed in

tom Court and Twickenham structural steel. Except in that each of the three bridges, was supplied from the heavily embellished, with cast iron bridges is in the main constructed Castle Works, Rogerstone, Mon., copings, fascia plates and orna.of reinforced, concrete, and that of Guest, Keen and Nettlefold, mental distance pieces.

they are all arched bridges of the Ltd. The lighting also forms a special-there is ttle imilarity between with the construction of both

same width 70ft. between parapets feature, the pylons being provided

in connection with top lantern lights, while the hem. Ofach it can be said, how- bridges, roadway lighting is effected by ever, that it contributes positively liability and incidental risks, were such as employers special lanterns which are designed to the beauty of the Thames.

covered by the Federated Employ- to give a flood light effect and are In Keeping With Surroundings.

ers Insurance Association, Ltd. mounted on ornamental cast iron standards.

Three famous architects have de- The old bridge was closed to with their surroundings. Taking signed these structures in harmony traffic on the 1st April 1931 and them in the order in which they work on its demolition and on the would be seen from & vessel going construction of the new bridge was down-stream, one comes first of all commenced forthwith As is cus- tomary in the construction of such where Sir Edwin Lutyens, RA, the to the Hampton Court bridge, works on the Nile operations were designer, in collaboration with Mr suspended during the two high W. P. Robinson, Inst.CE.. The flood perioda, namely of 1831 and 1832. This makes the actual time engineer, had the task of achieving occupied in the execution of the harmony with the ancient red-brick entire project approximately 18

elevation of the Palace near by months and the opening ceremony was performed and the bridge put inta service three weeks before the expiration of the contract period.

The work was carried out almost entirely by Egyptian labour under the supervision of British and Egyptian Officials, and this, the latest addition to the many import ant bridges, which span the Nile, presents a handsome tribute to the enterprise of the Egyptian nation.

1

point on which many sailormen will demand a rather longer test than is possible in the ordinary way, for the natural motion of a ship is one that obviously appeals to them more than it does.to the passenger.

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Reinforced concrete provides the necessary structural, strength for modern traffic conditions; red-brick panels and carved Portland stone facings farnish the resthetic note."

The new bridge was constructed for the Joint Committee of the Middlesex and Surrey County Councils by Mesers Holloway Bros. (London), Ltd., at a contract price of £170.000. It has a 10ft. carriage. way and two 15ft. footpaths.

Stonework, which is used in the construction of the cut-waters, the facing of the piers and abutments the balustered parapets and the string courses of the Hampton Court bridge, is another construc- tional material which Holloways have employed very widely, as, for instance, in a large number of war memorials throughout the country.

!

Wrought-iron lamps and stan- dards 11ft in height have been used to beautify the Hampton Court bridge. There are sixteen of these," which were supplied by Messrs. Thomas Elsley, Ltd They are somewhat unusual in that the mouldings and hoods of the lamps are also of wrought-iron, the lamps being surmounted by hand-chased. liong and crowns in cast bronze. The lamps and standards were com pleted in a little, per pro mouthe

Twickenham Bridge.

Entirely different in appearance in the next bridge in order, at Twickenham. Here is a structure. Wholly and undisguisedly modern, and one, which has many features of outstanding interest. Mr. Max- well "Ayrton, FRI.B.A was the architect, Mr. A. Dryland, C.B.E., M.Inst.CE, the consulting, engil. neer, and Mr. J. S. MacLachlan, M. Inst. C.E., the resident engineer, Its construction, in the first place, is interesting, if not entirely novel. The arches of the three 100ft river spans are each in two halves, the lawor parted being attached to the piers by a sort of knuckle joint or hifige. In the centre the two halvei meet, hat are not joined this allowing for shrinkage and expen sion. Except that the movement will normally be only a fraction aninch, the arches may be

Various hazards

Chiswick Bridge,

entirely in Portland stone and pro The Chiswick bridge in faced sents a most graceful appearance. It was designed by Sir Herber collaboration with the same engi: Baker, B.A., and carried out in neers as for the Twickenhaa bridge. The contract price for the Chiswick Bridge was £208,284.

There are three spans over the centre one, of 150ft, being the

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longest reinforced concrete span crown and faces of the bridge, pectively, are roadway spans of of any Thames bridge. On the which were lined with this shutter- Middlesex and Surrey banks, res ing, were in turn covered with 125ft. The general design is bold; Plywood supplied by Denny, Mott, and clean.

and Dickson. This ensured clean a smooth surface to the Practically the whole of the tim bridge after removal of the tem ber, British Columbian pine, used porary woodwork, and the resnit in the construction of this bridge, bears testimony to the workman- was supplied by Denny, Mott, and ship of the contractors staff. Dickson, Ltd., and a large quau- tity of it was especially shipped The approaches to the Chiswick

1v 14,000 cubic feet, and there is of wrought iron, designed by the from Canada. for this work. The bridge are made attractive by extent of the piles is approximate-semi-ornamental railings and gates about 10.000 cubic feet of planking, engineer to the Council and sup Canada, as a speciality for this whose experience in the manufac This firm also imported from Palmer & Co.. of Merton Abbey, plied and erected by Messrs. W

particular work, about 8,000 cable ture of iron, steel, and wire fenc feet of prepared shuttering, timing and gates is a wide and varied her. In addition to this, the one.

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