6
mesures qu'il jugera utiles pour se procurer les ressources requises pour l'exécution de tous travaux prévus actuellement dans le dit rapport ou qui seraient ultérieurement reconnus nécessaires à l'amélioration définitive du cours du fleuve.
C'est cette demande que j'ai l'honneur de vous transmettre.
Veuillez, &c.
Le Consul doyen,
7
Inclosure 12 in No. 1.
Quarterly Report, No. 11, of the Whangpoo River Conservancy for the First Quarter of
the Year 1909, January, February, and March.
(No. 44.) Sir.
Inclosure 9 in No. 1.
Consul-General Sir Pelham Warren to Sir J. Jordan,
Shanghae, June 1, 1909. I HAVE the honour to transmit to you herewith copies in triplicate of the statement of Whangpoo Conservancy work during the quarter ended the 31st March, 1909.
I have, &c.
PELHAM L. WARREN.
Works made under Contract.
Woosung Outer-bar Training Works.--Contract No. 1 with the E.A.D. Company. Zinkstuks sunk.-2,038 square yards in the harbour bunding.
Mattress work land above low water:
1,071 square yards in the sea-dyke.
822 square yards in the harbour bunding.
The base work of the sea-dyke has been completed to the end, excepting a gap
15 feet wide left in the mattress work as an outlet for the waste water when pumping dredged matter into the space behind the harbour bunding.
Piling.-Driven in during the fascine base work :—
Sir,
Inclosure 10 in No. 1.
Directors of the Whangpoo Conservancy Board, Shanghae, to M. Siffert.
Shanghae, May 14, 1909. IN accordance with the stipulations of article 4 of the agreement made in Peking on the 27th September, 1905, regarding the establishment of a board o conservancy for the Whangpoo River, and with reference to our report of the 13th February, 1909, and previous ones to the consular body on this subject, we have now the honour to present the following statement regarding conservancy work during January, February, and March, 1909.
2. Staff appointments, changes, &c.-(a.) Foreign staff: Messrs. Blakmore and Prest (British) were engaged, Messrs. Robinson and Danson (British) left the board's employ during the quarter. (b.) Chinese staff: no change.
3. A copy of M. de Rijke's report to the board for the March quarter, 1909: enclosure 1.
4. A statement of receipts and expenditure during the March quarter, 1909, supported by the necessary vouchers.
We have, &c.
Gentlemen,
TS'AI NAI-HUANG, H. E. HOBSON,
Directors of the Conservancy Board.
Inclosure 11 in No. 1.
M. de Rijke to the Whangpoo Conservancy Board.
Shanghae, April 23, 1909.
I BEG to hand you herewith my quarterly report, No. 11, on the execution of the work done in the river and its mouth at Woosung during January, February, and March last.
A copy of the report on the surveys along the river during this quarter, as received from the surveyor, M. Müller, is annexed to this.
I am, &c.
J. DE RIJKE.
Jetty
"
"
*
Sea dyke
11
Harbour bunding
"
Progress in piling:
wallings and cross-beanis put on
Jetty, work-staging
guide piles..
inner row (north side)
258 piles 50 feet long.
91
45
16
*
788
40 "
+
45
24
51
31
2
20
"
328
15
1
A
396
18
35
31
222
15
215
22
>>
12
4,320 feet.
Over a length of.......
3,750 1,270
+
+5
90
今
Rubble mound.--During this quarter great masses of rubble stone have been dumped on the fascine base between the piles both of the training work at Princes Wharf and in the first and second section of the jetty, where the mud bottom was found to be extremely soft and yielding.
The ridge of rubble stone underneath the work staging, now invisible at low tide, is being raised considerably higher than shown in the plan so as to get an extra load on the fascine base in order to settle the work as much as possible before the top work is made, and thus prevent after-settling. The same is being done with the sea-dyke.
As soon as the outer row of piles in the jetty is driven in, the surplus stone between the staging piles will be shifted outwards to the proper shape of the rubble mound.
Settling observed by gauges.-Before stone dumping was commenced, gauges (gas- pipes with a foot about a square yard, made of wood) have been carefully placed vertically on the base of zinkstuks. Thus far two such gauges are placed in the training dyke, four in the first section, and six in the second section of the jetty. Sinking of the gauges-that is, of the base-in the training work at the end of December last one gauge, 0583 feet; the other, 9.503 feet.
In the beginning of April: 0708 feet, 9'690 feet.
Jetty, first section, sinking at the beginning of April: 040 feet, 9:32 feet, 0361 feet, and 0'416 feet.
Jetty, second section, in the beginning of April: 0-80 feet, 0:257 feet, 0-424 feet, 0-326 feet, and 0·132 feet.
The observations thus far may be considered as very satisfactory; evidently it is not much more than the settling of the brushwood itself.
It should be remembered that the three layers of zinkstuks underneath are all constructed extra strong, that without this flooring the greater part of the masses of rubble stone dumped would have sunk away into a mud bottom like this, and that afterwards the superstructure would have caused another sinking-always unequal- and repairs almost impossible to estimate.
427
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