Lists B  - The Chinese University of Hong Kong project: Two main ductile iron feed up pipelines of

diameter 200mm for fresh water supply from Tai Po road directed to the main water meter of the University.

Below pictures show the pipe work arrangement  :

1) Pipes start from Tai Po Road	2) Two main pipelines constructed by WSD	3) Thrust block constructed by WSD	4) Valve chamber on site suit
5) Two main pipelines from the valve chamber	6) Zoom in of picture 5	7) Existing flush water main near the mentioned fresh water pipelines	8) Pipelines beside the inspection staircase
9) Under the client 's instruction, pipe should be located close to the drainage well to avoid affecting future modification work for slope	10) Zoom in of the picture 9	11) Pipelines extended to the flush water pump house	12) Pipe route continues from picture 11
13) Pipe route continues from picture 12	14) Zoom in of picture 13	15) Pipe route continues from picture 14	16) Pipe route continues from picture 15
17) Pipe enclosed within the thrust block. Note: The thrust block is for supporting the pipelines, withstand the pipe gravity load/dead load and water 's live load	18) Two short-lengthed pipes are reserved for installation of gate valves for on/off control- ling function	19) Meeting point of the two mentioned pipelines	20) Assembly of the main water meter and check valve for main water supply
21) Fresh water main connected unexposed pipeline under the ground, which formed the complete main water supply system

Reference information of the thrust blocks for supporting the pipeline ¡V

Below data recorded the excavated bulk size of the thrust blocks :

Thrust blocks I.D. code	Height (mm)	Length (mm)	Width (mm)	Remarks
A	860	890	1240
B	790	780	1190
C	1050	780	1250
D	980	790	1260
E	1000	800	1260
F	930	840	1160
G	960	840	1200
H	820	800	1200
I	800	740	1200
J	1070	770	1240
K	940	760	1240
L	930	760	1220
M	920	770	1200
N	920	720	1100
O	920	760	1100
P	900	740	1200
Q	900	740	1200
R	980	780	1180
S	1100	800	1220
T	1220	770	1760
U	1180	1200	300
V	890	380	380	Average size of thrust block approx. 1,032(H) x 814(L) x 1113(W)
W	890	380	380
5	1600	1470	1070
6 (Valve chamber)	2250	1300	1070

Below pictures show the structure of the thrust blocks :

1) Blinding concrete inside the bulk	2)  Structure of R.C. Bar (T12-20 (V)-150)	3) Formwork for thrust block	4) Incompleted thrust block (I.D. Code Q)
5) Completed thrust block (I.D. Code A) (Same pattern as Q)	6) Setting of the pipe & block	7) Completed thrust block (different patter to Q)	8) Completed thrust block of picture 7 as viewing from the top
		Pipe from Tai Po Road, inlets of the valve chamber
9) Formwork for main valves chamber	10) Valve chamber		11) The only R.C. block encloses the two ductile iron pipes

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