Page
METAL WINDOWS
MANUFACTURER:
MADE IN HONGKONG
# FROM
IMPORTED BRITISH MATERIAL
95% BRITISH.
THE TAI YING STErl window mfg, CO.
TELEPHONE: 27482.
OFFICE: 89/85," CHUN. YONG STREET. FACTORY-NORTH-POINT, HONG KONG.
HONG KONG DAILY PRESS, SATURDAY, MARCH 3, 1934.
SCOTTISH SHIPBUILDING
The Eagle O and Shipping Company, Limited, London, have just given out orders for six oil. tankers, and three of the number are to be constructed by Clyda shipbuilders. The fortunate firms are Messrs. Blythswood Shipbuild- ing Company Limited, Scotstoun; Mosers. Harland,and Wolf, Limit- ed, Gavan and Messrs. Lithgows, Limited.
These Port Glasgow. vessels nie to he built to a high- class spicification. and they will be fitted with itogle-screw Diesel mahcinary designed for a speed of 12 koots. They will have a dead. weight carrying capacity of be- tween 11,000 tons, and 11, tons The length will be about 480 ft,, and the beam, 60 it. These orders are most acceptable at present, as they will mea employment for a large, number of men.. Messrs. John G. Kincaid and Company, Limited, recneck, will supply the engines for two of the vessels, and Messrs Harland and Wolff will construct the engines at their Finniston works for the vessel they are to build.
For Constructural Work of Every
Description
Use Green Island Cement
WHERE GREEN ISLAND CEMENT IS MADE.
A
GENERAL
VIEW OF THE GREEN ISLAND CEMENT WORKS
TAKEN FROM THE SEA. "
Issued by the
GREEN ISLAND CEMENT CO., LTD.
2ND FLOOR
EXCHANGE BUILDING
This engine can be fitted in a few hours in place of the old Petrol engine, on any standard make of small or large truck or bus or pri- rate car chassis without any altera tion or special strengthening to any of the standard equipment whatever.
ENGINEERING & BUILDING
Reinforced Concrete
Structures
The building regulations of the Landon County Council, although having no official weight outside their own area, are, none the less, generally looked upon as authori- tative and are apt to influence opinion and practice in districts far from the County of London, In the past the regulations have, In some quarters, been considered unduly conservative, and in view of the revision of the London Building Act now being carried out, it is of great interest to note that the London County Council specifically usked to be furn- ished.
with recommendations for a code of practice for the use of reinforced concrete in bulid- ing." It will be remembered that such a code of practice, in con- nection with the use of structural steel, has already been furnished by the Steel Structures Research Committee. The request lelating to reinforced conere WL3 pre- sumably addressed to the Build- ing Research Boat, and in view of it, and of the national need of authoritative rules, the Rein- forced Concrete Structures Com- mittee of the Board has issued ä Report which includes.. recom-- mendations for a code of practice. for the use of reinforced concrete in buildings.
The Report is an important do- cument, and is likely to have wide influence. It is of a purely techn- ical nature, and is not concerned with any administrative action which may be taken as a result of its recommendations. None the less, the Committee have been led to hope that the code of prac- tice laid down will be of service to local authorities in the admin- Istration of their bye-laws." There is little doubt but that this hope. will be realised. The Committee is a strong one. "Bir George Hum phreys the chairman, and it has two representatives each of the Institution of Civil Engineers, the Royal Institute of British Architects, the Chartered Surve- yors' Institution, the Tristitution of Structural Engineers, the Institu- tion of Municipal and County En- the gineers, and Institute of Builders, and one representative each of the Institution of Water Engineers, the Incorporated Asso- ciation of Architects and Surve-
THE NEW PERKINS DIESEL:
+1
THE LIGHTEST MOST EFFICIENT, AND SMOOTHEST RUNNING MOTOR CAR CRUDE OIL ENGINE EVER PRODUCED.
+6
yors, and the Reinforced Con- crete Association. The general scope of the new code may be defined by a quotation from an explanatory statement which ser- ves as an introduction."
"The code has been framed, in such a manner as to assure good prac tice whilst not handicapping pro- gress, and to leave the door open to the adoption of new methods. &c., where these are adequate, established and authoritatively by tests or otherwise."
Referring to the actual code it- self. it will be found that thres grades of concrete are allowed. The first, ordinary grade, is in- tended for use in cases where ri- gid control is not exercised, and where considerations or conven- lence are such that it becomes Impracticable to insist on test. For this grade, and for a 1: 2: 4 mix, the permissible direct stress is 600 lb. per square inch. The second high grade calls for pre- liminary tests, for greater control during the progress of the work, and for a programme of tests on the deposited concrete. For 1:24 mix the permissible, dir- ect stress is 760 lb. per square Inch, or approximately 25 per cent greater than that for ordin- The third. ary grade confrete. special grade, calls for an even greater exercise of control and
of testing. For this grade the actual pre-determined strength of the concrete forms hte basis for the permissible stress. The permissible stress so obtained shall not, however, exceed by more than 25 per cent. the values permitted for similar mixes of high-grade concrete.
аа
Steel stresses are limited by consideration of two factors: (a) the factor of safety on the yield poing of the steel, (b) the extent of the cracking that is likely to occur on the tension side of a member in bending. In the opinion of the Committee adequate factor of safety 19 assured by making the per- missible stress 0.45 of the yeld- point stress,, The extent of the cracking, should not in general go beyond that experienced with a steel stress of 20.000 15 per square inch. The corresponding yield point must be not less than 44.000 lb. per square inch, in or- der to provide the requisite fac-. tor of safety.—
ANDREW CARNEGIE RESEARCH FUND
The Council of the Iron and Stes Institute is prepared to make.
of annually a limited number grunts from
fund the research founded by the late Mr. Andrew Carnegie in aid of metallurgical research work. The object of the scheme is not to facilitate ordinary collegiate studies, but to enable students, who have passed through a college curriculum or have been trained in industrial establish- ments, to "conduct researches on problems of practical and scientific importance relating to the metal- lurgy of iron and steel and allied subjecta Candidates, who must be under 35 years of age, must make their application before the end of February on a special form obtain- the able from the secretary on nature of the proposed research, but the maximum amount granted in any one year will," as a rule, not exceed 100. The results of the research must be communicated to the Institute.
·
The Mersey Road Tunnel, the Largest in the World
In June 1922, a joint committee, representing the local authorities of Liverpool, Birkenhead, Bottle and Wallasey, and entitled the Merseyside Municipal Co-ordina- tion Committee, was appointed. under the chairmanship of the Iate Sir Archibald Savidge, to consider plans for improving the cross-river connections. This body decided to nominate three engin- eers, namely the late Sir Maurice Fitzmaurice. Sir Basli Mott, and Mr. John Brodie, to report on the possibilities of constructing either
a bridge over, or a tunnel under, the Mersey. After examining the position with the greatest care, these gentlemen submitted a re- port, which included complete schemes, designs and estimates, for both a high-level bridge, and a tunnel. It was apparent, how ever, that the building of a bridge
·would “necessitate the construc- tion of plers in the waterway; and as this would have interfered with the river trame, it would undoub tedly have aroused opposition from the dock and shipping in- terests.
the alternative scheme for a turmel was therefore' adopted by the Joint Commitee, and the ne- cessary Parliamentary powers for its construction were obtained in the Mersey Tunnel Act of 1925. This Act, which was modified in 1927, 1928 and 1933, in addition "to
authorising the necessary works set up a statutory body, which is known as the Mersey Tunnel Joint Committee and is the controlling authority for the construction of the tunnel.
The tunnel comprises a through traffic entrance in Old Hay- simi- market, Liverpool and a
wos
lar entrance near Chester- street. Birkenhead: In addi- tion, there is a dockside bran- ch on the Liverpool side, of which the entrance is at New Quay just north of Chapel-street; and this joins the main tunnel under Dale- street, near North John-street. A similar branch on the Birken- its entrance in head side has Rendel-street, was originally intended that the main Liverpool entrance to the tunnel should be in Whitechapel. near the central
But as a result shopping area. of more complete investigation, and as it would have necessitat- ed an expensive street improve- ment, this
abandoned in favour of the Qld Haymarket entrance. It had also been in- tended to have only an outlet in Birkenhead, but the docks bran- ch already mentioned was added by the Mersey Tunnel Act of 1827. The two tunnels on the Liverpool side are built on a falling gradi- ent of 1 in 30, and this gradient continues past their junction to a. point in the main tunnel 780ft. beyond the quay wall of George's- parade. From this point, which" is the lowest the tunnel, there is a rising gradient of 'i in 300 for a distance of 1,670 ft., follow- ed by a rising gradient of 1 in 30 to the junction of the main and dock tunnels on the Birkenhead Ide. "The main tunnel then con- tinues on a rising gradient of 1 in 30 to the entrance near Ches- ter-street; the ruling gradient in the Birkenhead dock tunnel, is' the same, though there is a short length of 1 in 40. The length of roadway from Old Haymarket. Liverpool, to Chester-street. Bir- kenHead, is 3.751 yards, and that from New Quay. Liverpool, to Rendel-street. Birkenhead. 3,670 yards, the total length of roadway constructed being 5,084 yards. The distance from the working shaft at George's Dock, Liverpool, wo the similar shaft at Morpeth Branch Dock, Birkenhead, is 1,735 yards, and that between the quay walls on the two sides of the river, 1,281 yards. At the deepest point the bottom of the under- river tunnel is 70 1. below high
water level, while the average cover of rock over the top of the tunnel is 20 ft., the minimam be- ing ft. 6 in. Above the rock there is usually from 5ft, to 10 ft. of gravel and above this is clay. which forms the immediate bed of the river at the point where the tunnel erosses. The average total cover of rock, gravel and clay above the top of the tunnel is from 30 ft. to 35.ft.
The length of tunnel under the river is circular in section, the ex- ternal and internal diameters be- ing 46 ft. 3 in. and 44 ft.' respec- tively.
The cross-sectional area
is 1.690 sq. ft. It is, therefore, the
largest subaqueous tunnel in the "world, comparing with the Roth- erhithe Tunnel under the Thames in London, which is 30 ft, in dia- meter, and with the Holland Ve- hicular Tunnels under the Hud- son River, New York, which are 29 ft. -
THE LOCOMOTIVE-
BUILDING INDUSTRY
18
One of the most noteworthy
weeks improvements of late that in the locomotive-building industry. At Newton-le-Willows, Messrs. Vulcan Foundry, Limited, have this week re-opened their farges preparatory to commen- cing upon the contract recently obtained from the London Mid- land and Scottish Railway Com- pany for Afty engines. The Arm is also engaged on the construc- tion of five locomotive bollers for the Bombay," Baroda and Central. 'India Rallway. and has just signed an agreement, it is an- nounced, with a Danish firm for the construction at their works of Diesel locomotives, ralicars and shunting tractors incorporating the Danish company's design. It is expected that an additional 2,000 men will be employed at-the Newton-le-Willows works before Easter. The outlook at Crewe is improved by the building of 40 new superheater locomotives for express freight service, at the London Midland and Scottish" Rallway works there, and, in addition, the company announces that during the next twelve 'months 30 locomotives will be reconstructed or repaired weekly at the Crewe repair depots.—
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ELECTRICAL-CABLE JOINING TAPE
The
Holborn
tape, recently introduced by Messrs. W. T. Henley's Telegraph Works Com- pany. Limited, Holborn-viaduct, London, E.C., for use in jointing low-tension cables, consists of a. selvedge cotton tape in. wide, which has been thoroughly dried and impregnated with a slightly adhesive insulating compound during manufacture. It is mods- ture-proof and can be used with-- out the application of heat, as the successive layers adhere to each other sufficiently to ensure that they remain in position. At the same time, it is not, so sticky as to be inconvenient to handle. It is claimed that the use of this tape will obviate the necessity of impregnating plain cotton tape in compound on site and will also eliminate the materials required to heat that compound. Testa show that the tape, when applied to low-tension, four-core joints: is capable of withstanding a pressure of over 33. kV, and does not deteriorate so long as it is protected from foreign matter by the wrapping.,"
For
every $100 spent on petrol for an ordinary petrol engine, only $14.80 is required for crude oil for the Perkins Diesel, showing thereby in fuel costs the
AMAZING SAVING OF 85%
Here is a Diesel engine that will do 4,000 revs. per min. giving it a similar "speed range to an ordinary petrol engine. It is made in four models having an R.A.C." rating of 14.4 h.p. 15.0 h.p., 18 h.p., and 27 h.p respectively.
United National Corporation,
HONG KONG,
National Commercial Bank Building.
Phone 32602,
Ltd.,
Shanks
& CO LTD
BARRHEAD-SCOTLAND
SANITARY WARE
MODERN SANITARY
EARTHENWARE
APPLIANCES IN
WHITE & COLOUR
THE JARDINE ENGINEERING CORPORATION, LD
L.
(Incorporated under the Companies' Ordinances of Hongkong)
14, PEDDER ST. HONG KONG
SOLE ACENTS —
SHAMEEN, CANTON,