1933-10-07 — Page 2

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HONG KONG DAILY PRESS, SATURDAY, OCTOBER 7, 1933.

ENGINEERING AND BUILDING

THE CENTENARY -

GUSTAV EIFFEL

ENGINEERING

"

OF

་་

Tower Builder And Steel Engineer

Quite apart from this, however, Eiffel was undoubtedly one of the greatest structural steel engineers in the history of the world, and he designed and built for example many famous bridges and viaducts, having a works at Levallois Perrett,

near Paris.

JI

means of staircases and ladders.

CONTRACTS

Orders Secured By British Firm

扑

ཀ

Messrs. John M. Henderson and

IMPERVIOUS CONCRETE

Experiments With Mining Etc.

A paper on Aggregate Grading types of concrete, viz., "lean," "me and Concrete Quality, which Pro; dium" and "rich," so that it is fessor Walsh has contributed to the possible to see, almost at a glance, proceedings of the Institution of whether a particular mixture of any Civil Engineers of Ireland, contains two aggregates will produce a work. valuable information for those enable courete.

gaged in concrete work. The paper i The procedure, together with the deals with experiments which Pro- tables which are included in the fessor Walsh has carried out with paper, showing the water-cement- a view to" providing a simple me- ratio to use and the yield of con thod whereby aggregates can be crete to be expected, should effect Messrs Dorman Long and Cour-impervious concrete.

combined, scientifically, to produce a considerable saving in time when pany, Limited, 33, Broadway, Westments, based on the grading of the supplies of aggregates. It must be His experi- considering the values of different minster, London, S.W.1, have oh- tained, from Messrs. Hull City and down by Fuller, Bolemey and others tables are based on dry materials, aggregates, follow the lines laid borne in mind, however, that the Recently there was celebrated in construction the weight of steel used Suburban France the tentenary of Alexandre for the tower only was 2,403 tons, contract for the supply and erection graphs depicting the type of grad the job, for the bulking effect of Cinemas, Limited, the who have evolved, formulae and and allowance should be made, on Gustav Eiffel, who was born in with also 93 tons of cast iron, while of the 870-ton steel framework of the ing which will give

i Dijon on the 15th December 1532,883 tons of steck, 50 tons of cast new Regent Cinema at Hull. The maximum density. Professor Walsh, the desired results are to be attain- concrete of moisture in the fae aggregate, if famous of course in connection with iron, and over 3,000,000 bricks were contract stipulates that the steel however, has gone a step furthered.. the Eifel towers in Paris. and employed in constructing the enter work must be concluded in 8 weeks and has established zones for three Blackpool

tainment buildings round the base from the receipt of particulars, and

Professor Walsh has paid special of the tower. Also it may be stated the actual erection of the 870 tons

attention to the need for workabili. duplicate lifts are employed to take of steelwork is to be completed in

ty of the concrete, coupled with Messrs Sir W. G. Armstrong, density strength being the last con- visitors to the top, starting 65 feet 5 weeks. above the ground and going to a

Whitworth and Company (Engine sideration in view of the high stan height of 373 feet to the main upper Company, Limited, King's Works, Westminster, London, S.W.1, in- It would have been of interest if ers). Limited Thames House dard of modern Portland cement. level, from which the more daring Aberdeen, have received an order form as that negotiations have been tests for permeability could have visitors may hscend still bicher by for a 4-ton. 1,000-ft. span, travelling completed, as a result of which the been included showing the relative aerial cableway from the British London and North Eastern Railway resistance to water pressure of the The well known Eiffel tower in

Of great importance is the pro-Phosphate Commissioners. They Company will put the. new Arm- various mixtures. The slump cone Paris was completed in 1880 on the tection of these huge steel towers have also obtained an order from

strong Whitworth streamlined and flow table were used as guides. Champs de Mars, being 98 feet from rust and corrosion, but it is Messrs. The Croft Granite, Brick Diesel-electric rail

twice the interesting to note that no trouble and Concrete Company, Limited, regular service on the suburban admits that, even so, reliance had coach, into to workability, but Professor Walsh high, much more than height of the Dome of St. Paul's has been caused in this connection Leicester, for a radial cableway for and outlying railway systems out to be placed on the behaviour of the life of the a load of 6 tons, and having a span aide Newcastle. Two power unita concrete under the shovel. It is to (40 feet), the cost being about £250, during the 40 years' 000, Apart from pleasure purposes Blackpool Tower since Red Lead of 1,236 ft.

A third contract they of identical design were recently be hoped that, before long some the tower, taken over by the Muni- paint is used exclusively for the have in hand is for the winches and ordered by a South American rail- more accurate method of comparing eipality of Paris in 1909, has proved ground cont of all the steelwork, traversing gear for the trawler slip way, while a contract for another the workability of different concrete to be of the utmost importance to about 10 tons of paint being requir: way at the new Grimsby Fish Dock, unit has just been placed by an In- mixture will be forthcoming-En-

The Blackpool the main contract for which has dian railway."Engineering." a number of sections of science, ined for

gineering." cluding meteorology, the chemistry Tower Co. Ltd. always anxious to been placed with Messrs. P. and W. of the atmosphere, astromeny, aero. use the best of everything when the MacLellan, Limited, Glasgow. dynamies, and wireless. Since 1921,

smart appearance and the efficiency Mesars, William Simons and Com for example, "Radio Paris has of the Tower structure is concerned pany Limited, Renfrew, have re- been one of the world's most im state they have found nothing yet ceived two contracts for dredgers. portant broad-casting stations, wito beat Red Lead paint and the The first is for a Diesel-engined dely used by British listeners be-steelwork is still in excellent con- 2-in. cutter suction reclamation cause of the heavy Sunday program-dition after the long exposure to the dredger, for river service, to the or mes of British stations.

wind and rain and the spray fromder of Messrs. The Barmah Oil the Irish Sea. This is a striking Company, Limited. "Machinery of example of the value of Red Lead 3,000 brake horse-power will be in- paint in protecting iron and steel stalled in the dredger and the suc- from rust and corrosion, which has tion frame will dredge to a depth long been the standard method for of 40 ft. Two pumps will deliver bridges, lighthouses, pit-head gear, 1,000 tons of solids per hour to an aerials for high tension trasmis elevation of 38 ft. at the end of 11 sion lines, and other exposed, struc, miles of floating and shore pipe line. tures.

The second order is from the Chin- ese Purchasing Commission" for a small steam-driven cutter auction dredger of the firm's radial design. This type of dredger is particularly suited for work in narrow channels. Mesgrs. The Chloride. Electrical Storage Company, Limited, 337, Victoria-street, London, S.W.1, have received an order for an Exide battery of 220 cells, type SEG/6, for the Palace of the Dalai Lama, ruler of Tibet. The parts of the battery will be specially packed for the 300-mile overland journey by

BLACKPOOL'S "TOWER.

The Eiffel tower at Blackpool was erected by Heenan and Froude Ltd. of Manchester, the foundation stone baving been laid on the 25th Sept- ember 1991, and the height to the crows nest is 480 feet, with $18'9' | to the top of the flagstaff. In the

one coat.

SHIPPING AND MACHINERY

UP-TO-DATE

The Olympia

For Constructural Work of Every

Description

Exhibition

Messrs. Ruston and Hornsby,

Andrew

It would be unfair to apply the and allied industries in the countrymule, yak or coolie, quantity test to this year's Shipping in the past few years, as healtby Limited, Lincoln, are to supply. Four and Machinery Exhibition, at Olym- and as progressive-looking an ex-100-kW auxiliary generating sets pin says the Manchester Guardianbition as has been seen at Olympia for the Incomati, a vessel which is Tec exhibition this

is during the present exhibition sen- year but only the export is likely to į 100,

being built for Messrs. notice that. It is, however, consi- This year the organiser have suc- Weir and Company, London, by dering the condition of the shipping cooded in arranging an exhibition Messrs, Workman Clark (1928),

which ought to excite the enthusi Limited, Belfast. asm of schoolboys while drawing the Mesars. Radiovisor Parent, Limi- more restrained nods of approval ted, 28. Little Russell street. Lon from the experts. This year even don, W.C.1, bave received the order the housewife will find to interest for completing the installation of her such things as a spray-painting smoke indicators in the Barking. outfit which may be run from a Power Station of the County, of ordinary household electric lighting London Electric Supply Company. point, a suite of wovenfibre furni- this will make a total of eighteen ture of four chairs and a table which folds into a space nine inches (Continued on next fol.) deep, and a combined wood preser- vative and stain (of many colours) by means of which wood may be The Department has made some rendered proof against dry-rot, and strange discoveries during its "ex- which is also fire-resisting. For the periments into marine corrosion. schoolboy fas well as the mechani-It will come as a surprise to many cally minded grown-up) there are visitors to learn that there are still such excitements, among the forest in commission' steamships with the of binnacles, replicas of ship's original wrought iron plates, such bridges, wireless cabins, and such-ne the 5.3. Edina, which were built like as the "Armstrong Whitworth as long ago as 1854 and saw service 15-ton Diesel electric shunting loco in both the Crimean and the Great motive, which runs up and down || War.

Use Green Island Cement

TWO REFLEX TYPE ROTARY KILNS HAVING AN OVER ALL LENGTH

OF 264 FEET. THESE KILNS ARE USED TO MANUFACTURE GREEN ISLAND CEMENT.

lasued by the

GREEN ISLAND CEMENT CO., LTD.

2ND FLOOR

EXCHANGE BUILDING

150 feet of railway track. This, it

was mid, is the first time a locomo tive has been installed in working order in an enclosed exhibition in this country.

GOVERNMENT SCIENTIFIC

EXHIBITS

The Government is taking part in this year's exhibition for the first time and is represented by the Post Office and the Department of Scientific and Industrial Research. -The Post Office, to give the lie to a recent report that wireless tele- phone conversations from British stations were being overheard, by foreigners, demonstrates how the speakers are scrambled" into una recognisable and uncanny sounds..

The exhibits of the Scientific Research Department may not catch everyone's eye at a first glance, bati they are full of unusual interest. A collection of miniature ship's pro- pellers fastened to a board disclose the story of recent experiments in the tanks at Teddington by means of which as mach as 10 per cent, has been added to the speed of British cargo vessels.ND VERY DE

Another exhibit, hardly less exclt- ing in appearance, is an inventiou which is claimed to have evolution- ised the surveying of ships for sea- worthiness, enabling the thickness of steel plates to be measured when there is access only from one side of (Oontinued on next column),

instruments,

the plate.

Shanks

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