Page
EXPERT BUYING
SERVICE
For years we have been buyers for Foreign and Colonial Firms. We possess the requisite expert knowledge and can render you valuable service.
SPECIALISTS IN
MACHINERY and PLANT HARDWARE.
of all types.
MINING MACHINERY,
ENGINEERING,
SHIPBUILDING and
MINING STORES
And SUPPLIES.
ESTATE SUPPLIES.
BRIP CHANDLERY
REQUISITES.
BUILDERS
CAR and CYCLE
PARTS and ACORSBOBIES, Etc.
We Inspect, buy and ship good SECONDHAND PLANT & MACHINE TOOLS
to suit customers' requiramanta,
R. THOMSON, LTD.,
141 BATH STREET, GLASÉOW,6.2
Tel: Adth: BANKENBOGÓ, Olga Code: Bentityn: A.10, 45: Kendale: Engineering, sta.
THE EXPRESS LIFT CO., LTD.
WITH WHICH IS INCORPORATED THE EUSINESS OF
SMITH, MAJOR & STEVENS, LTD,
"
EXPRESS SMS
LIFTS
MODERN LIFTS
FOR
MODERN BUILDINGS
SPEEDY RELIABLE SERVICE
FOR DETAILS APPLY TO
THE G.E.C., QUERN'S BUILDING, CHATER ROAD,
EVERYTHING (SE.C.
your guarnater
PERMANOID
ELECTRICAL
a
Berger Product
ALUMINIUM PAINT. :
—DOES NOT TURN BLACK WITH
AGE --- BUT REMAINS ALWAYS
BRIGHT AND SILVERY.
W. R. LOXLEY & CO. YORK BUILDING, CHATER ROAD.
HONG KONG DAILY PRESS, SATURDAY, FEBRUARY 6, 1932.
ENGINEERING AND BUILDING
DEVELOPING HIGHWAYS
IN CHINA
HOW THE MILEAGE HAS GROWN-
IN TEN YEARS.
SOME DETAILS OF THE NEW ROADS.
፡፡
king 7%.
Food supply problems in Chind especially in time of famine have Pantou-li Road. This road is made the question of transportation divided into two sections one from a most vital one. About ninety per Paotou to Sinsinkan, via Wuyuan, cont" of China's "modern milengend the other from Sinsiskan to consists simply of dirt roads. Very Paotou. Each section has à length littlo gravel or intendam construc of 1,500 kung li tion has been done, though crushed stone has been used to a limited
longth.
Sinn-Paotou
Rond.
STEEL SLEEPERS FOR CHINA.
LONG RAILWAY RAILS.
NEW DUAL AIR
VALVE.
A NOTABLE BRITISH DEVELOPMENT FOR
high pressure orifice, while low prossurb sir peshon out through the partial or full opening of the main low pressure valve, opoued and closed by hydraulic power-derived from the pressure within the pipe. Finally for the outlet of still larger - volumes of atmospheric pressuTO, air, as when Alling or emptying pipes, the main low pressure valve opens to the full extent.
PIPE LINES.
Hitherto for water maine double air valve have been necessary to perform the functions of ralensing In the norma?" position:"the" high: automatically under working pros pressure orifice is closed by the bail. Ray which may accumulate, float and the large low pressure exhausing air, at atmospheric press opening is similarly closed by the There are several interesting fa-sure when the pipe is being filled | low pressure valve portion, hold' up tures connected with the large con with water, and admitting air when against it by the water pressure in tract for steel sleepers which Messrs. | winter is being drained out of the the pipe below. When, however, Colvilles are now completing for pipe so as to prevent air locks and there is an accumulation of air the Chinn an their Glengarnock Works the formation of a partial vacuum.latter passes to the top of the valvo in Ayrshire. In the first place it Now, however, Glendald and Kon- and gradually displaces the water" represents the re-entry of a British nedy, Ltd., of Kilmarnock (Scot until the ball falls by its own weight
and opens the high pressure orifice. C steel-making frm into the Chinese land) have recently introduced an market, from which they have been ingenious Dual air valve which thus allowing the air to scape.
In the case of very large volumes largely excluded for the past two carries out itself all the above year. The order also represents three funitions so that the usund the Arab large output of steel sleep-¡ separate high pressure float valve ers from the
new plans which and atmospheric float valves are Messrs. Colvilles recently installed not required.
Glengariock for the production
14
of air, however, the rate of escapa- of the air from the high pressure orifice is not sufficiently rapid so that due to the pressure difference between the inside and outside of the valve, the low pressure valvo
Pabtou-huleh Rond.—This high- way is built wie Singinkan and extent for surfacing a few pro-
In principle the arrangement of vinces. Frequently it necessary Chikoutaing, and is 3,300 kung iin of wieel sleepers of widely varying the now valve, which possesses also tq "travel" and to transport freight
types to meet modern conditions at a number of other advaátrges, con portion openk, prosenting à large annular space through which the Running home and abroad." In this plant siste essentially of a buoyant high air escapes freely. When the water ovor long distances of mud and dirt. rends in order to reach the nearest from Sian to Paotou via Kaplan the steel used is in the form of pressure ball valve werking inside rises again first the high pressure railway station. This state
of Ninguia and Wuyuan, this road has either a flat bar or a rolled oca large non-buoyant low pressure and then the low pressure valve tion, according to the type of valve, all enclosed within a cowled inner ball or high pressure element portion closes automatically, the affairs is very serious, as it hinders a total length of 2,000 bụng lì. the development, of commerce, and' The total length of these five re-sleeper to be produced. After paschaing. Apart from the convenience acting essentially as a pilot valve.
to. the of one Self-contained unit the extra
Also the standard sizes of the disregards the comfort of the constructed roads will be 14,800 sing through the furnace
Valve are dim, sin, and dig. travelling public. Famine-strickenkung K. The total distance to be prudes a the delivery end of the advantages include the fact thrit diameter suitable for Min., 27in diatricts suffer worst of all, food re-constructed on these five high-furnace the bars are shaped into the float is isolated from the cur- and 39in. diameter maximum sizes and other supplies frequently ar- waya is shown in the following sleepers, punched, and delivered rent of escaping air, and therefore of pipe, respectively, with maximum upon an endless chain. On this undisturbed by eddies, while the and 350 lbs. por square inch, the working pressures, of any 70, 175, riving too late to be of service.
Distaner to be conveyor they are brushed and low pressure valvo is shielded by balls being in, bin and sin Length Re-constructed turned, and passed into a dipping its containing oup and cannot be diameter made of wood covered with tank for coating with a bitumastio blown shut. Also, the accumulations sheath of soft rubber making a joint hard vulcanite and having an outer in kung li in kung li
solution, after which they are pass of high pressure air escape through against a white instal orifice. 2,800
2,800
ed on to the inspection banka." The rate of output varies according to the section operated, but sleepers weighing 138.74lb. can be finished
table:-
Total
China's modern highways are shown in process of development in the following figüres: 102), 2,000 li; ¦ -1092, 14,000 74; 1923, 14,000; 1904, Kolsu 30,000 71, 1963, 45,000 4, 1996, Kolan- 47,000 12, 1937, 30,000 li; 1928, 33,000 |: 1929, 62,000 and in 1900, 94,177 Photou-li
li. Compared with the vast ares of Pantou-
Road
Shuleh
3,300
3,300
3,000
1,300
the Republic, such a length of road way is far from sufficient to meet Sian-Paotoh requirements and inspired by the
Shulch
3,600
1,800
2,000
1,800
efforts of the American Red Cross
14,000
1,1,000
to alleviate the famine-stricken dis-
tricts in 1920, China has at last awakened to the drgent necessity
Out of the total length 11,000 Long Hi (or kilometers) the Kaolin,
road complete reconstruction is necessary ag the original road
at a rate of six or seven a minute.
I
The order referred to, consisting Use Green Island Cement
of several thousands of tons of
stes sleepers, was placed by the Chinese Purchasing Commission.
ILLUMINATION METER........
for the construction of many more I road requires special st-PHOTO-THEODOLITE AS AN modern ronds-not only larger but tention. Along the Kaolan-Jli more suited to carry the faster and heavier trafo which results from development of motor-transport.
The National Good Roads Asso ciation of China, with headquarters
was only an earth track. Con NEW USE FOR INSTRUMENT. version of this crude surface into a modern road makes motor trans-
develop-
A novel and interesting use of the Photo-theodolite is described in a paper read by Mr. J. Swarbrick, F.R.I.B.A., before the Manchentor
in Shanghai, was organized tenportation possible, saving time and years Ago under the direction of facilitating commercial Dr. C. T. Wang, President of the ment. Association. This society has been
The first section of the Kaolan-and District Association of the In- supported by contributions from Shulch road is within the boundary stitution of Civil Engineers. There different organizations interested in of Siakiang province: With the has often been much conflict of its work, and by income derived exception of the territory west of testimony in the past when com from the sale of various publica- Tulan Temple, the land through pensation has been sought in the tions. The Association has estab- which the road passes is on A plaio,
courta for losses of light, due m lished branches in various districts, hence very little repair work to be the erection of new buildings or including Nanking, Sonchow, Ewei- done. Je former days persona, en- the heightening of old ones. In yang, Changsha and Knoyu intering Sinking province proceeded general, estimates are based on the in Kiangsu province; Hangchow, through Linngchow and Yumen amount of sky visible from various in Chekiang province; Anking sad hwn, but since the construction of Liuan, in Anhwei province; Bhang- new road traffic passes by that parts of the room concerned. What is uhually important, moreover, is the intensity of the light on hori-
yao and Kanna, in Kiangsi pro- route, which is better constructed vince; Hankow, Ichang, Siangyang than the old road.
provement is recommended.
COST OF PROPOSED WORKS.
も
zontal tables or desks. The condi-
ions assumed are those of a cloudy sky in autumn or winter, and that light which, at the desk of table, bae an intensity of less than one. candle-foot is nearly worthless.
A sub-committee of the Illumi
nating Engineering Society indeed
has recommended that the minimum figure should be Si candle-ft., or even, in the case of schools, candle-ft. The total lighs from the unobstructed hemisphere of ♫ cloudy sky on a dull winter's day is estimated as giving an illumina tion equal to 800 candle-ft, and the proportion received at any part of a room depends on the sky visible therofrom. Charts to facilitate the of the illumination
and Wangpu, in Hupeh province; The Prolou-Alshe section of the Sinyang, in Hunan province; Poton-Ili road is open to Hsienchien and Mingnan in Fukien
trafie, but "the other part of the province; Changtha in. Hunun pro-road is in bad condition, the bed vince; Peiping (the former being loose and shaky. capital; Taiyuan in Shansi prò The Paotou-Shulch and Sian. vince; Chengtų, Chunking, and Paotou roads are also in bad bon- Nanking, in Szechuan province; dition, and a general scheme of im- Kirin, in the province of that name; Kweiyang, in Kweichow; Kweiling, in Kwangsi province and Swatow, in Kwangtung province, making a total of 27 branches throughout the country. Under the Out of 11,000 kung li to be re- influence of the Association valuable constructed over 1,000 kung linave work his been done in connection been already built and are open with highway construction and to traffic. Roads passing through general development of roads in mountainous districts, require various provinces, particularly in larger the north-western part of the coun-work. For this reason about 1,500 from observations of this kind have try.
kung li hoed special care in the ten prepared by Mésers. P. J. NEW MAIN ROADS. vicinity of Hwangyuan, Tulan
and J. M. Waldram, and also by Temple, Yenmn, Sinsinkan, Chi the author of the paper. Hitherto Recently a plan for rond recon-koutsing and Ji. At 84,000 per such cheervations have required struction has been drawn up for kung ti the total cost of this work is much time to take, but by using the that district, the roads in question estimated at over 80,000,000, while speically fitted phototheodolite do being the Kaplan-lli, Kaolan-
amount
1
of engineering calculation
Shulch, Pactou-Illi, Proteu-Shulch, about 1,000 kung li at 81,000 per signed by Mr. Swardbrick, the work kung li will cost $1,000,000. The of Boquiring the data neetaenry and Sian-Paotou roads.
Koolan-Ili Road-This rond has remainder of the work to be done can, he claims, be reduced almost a total length of 3,800 kung on various roads is estimated to to insignficance. The methodʼmore- (Kilometers), running parallel with
י,
a railway which is under contém cost about $1,000,000 bringing the ever makes it easy to compare new total cost of this project up to conditions with old if photographs plation.
Kaolan-Shuleh Road. This high-about 80,000,000.-Far Eastern are taken both before and after the
change. way has a total length of 3,300 Iteview:
for
Constructural Work of
Every Description.
HOW GREEN ISLAND CEMENT IS MADE
Green Island Cement is manufactured from hard limestone and clay. It is necessary that these materials should be finely ground in order that they may come into intimate contact with one another in the burning process.
The finely pulverised materials are mixed in a certain definite proportion, roughly one. part of clay to three of limestone, and are fed to the Rotary Kilns.
In these Kilns they meet the hot gases and flames generated by pulverised coal blown in at the other end of the kilns, and after various chemical actions have tallen place, they combine to form Portland Cement Clinker.
The Clinker is ground down with a small percentage of gypsum to regulate the setting time, and Green Island Portland Cement is thus produced.
"Although sounding so simple, in reality the process is an intricate combination of mechanical, physical and chemical operations, needing great skill and care. Nothing but constant and accurate supervision will yield the results so Well-known with Green Island Coment; namely, strength, uniformity and reliability.
USE GREEN ISLAND CEMENT
Issued by thė:
GREEN ISLAND CEMENT CO., LTD.
2ND FLOOR.
EXCHANGE BUILDING.