centralcentral – wan chai bypass tunnel (slip road section 8) contract no. hy/2010/08 additional...

Central – Wan Chai Bypass Tunnel

(Slip Road Section 8)

Contract No. HY/2010/08

Additional Mitigation Plan for Slip Road 8 under condition 2.16 of FEP- 10/364/2009/B

Revision: 4

January 2019

Prepared by:

Environmental Officer

Gabriel Wong Date: 11 January 2019

This document contains confidential information of China State Construction Engineering

(Hong Kong) Limited and shall not be copied or amended without the approval of the

Contractor’s Representative

Contract No. HY/2010/08 Central – Wan Chai Bypass Tunnel (Slip Road 8 Section) Additional Mitigation Plan January 2019

Table of Content

1 INTRODUCTION 1

2 SCOPE OF WORKS 1

3 LIST OF REFERENCE DOCUMENT 2

4 KEY FACTORS CONSIDERED DURING CONSTRUCTION OF NOISE

SCREENING STRUCTURE WITH AESTHETIC DESIGN

2

5 DETAILS OF PROPOSED NOISE SCREENING STRUCTURE 3

6. CONSTRUCTION SCHEDULE 4

7 TREE & SHRUB PLANTING AMONGST THE NOISE SCREENING

STRUCTURE

4

8 NOISE SCREENING STRUCTURE WITH AESTHETIC DESIGN 4

9 Landscaping Area above Slip Road 8 change of design 4

List of Appendices

Appendix A

Location of Noise Screening Structure with Aesthetic Design & Landscape Area

Appendix B

Tree Planting Plan & Shrub Planting Plan

Appendix C

Detail Section of Noise Screening Structure & Wall Pattern of Noise Screening

Appendix D

Change of Landscaping Area above Slip Road 8

Appendix E

Victoria Park Re-provisioning Irrigation System Layout Plan


PlanD’s observation / comment via memo dated 18 October 2018 ref. (23) in EP2/H4/S3/15 in Annex

Responses

Central-Wan Chai Bypass –Tunnel (Causeway Bay Typhoon Shelter Section) EP Condition 2.16: Additional Mitigation Plan for Slip Road 8 (Revision 3)

It is acknowledged that the amendments shown in Appendices C and D in the revised plan, please find below our comments from landscape planning perspective: 1. For Appendix C – ‘Change in the Wall Painting

(planting of Babusa vulgaris wamin instead of painting bamboo like pattern on the screen wall) of the noise screening structure’: The proposed planting of Bambusa vulgaris is

an acceptable alternative measure, subject to the agreement from the future vegetation maintenance agent e.g. LCSD on the proposed plant species and its spacing etc.

Acceptance of the proposed planting of Bambusa vulgaris from LCSD has been obtained on 30 October 2017 as per the email attached in Appendix C.

Details to support the proposed bamboo planting, e.g. width and depth of soil medium and irrigation arrangement should be indicated in the section A-A drawing.

For the width of the soil medium please refer to the site sketch as attached in Appendix C. For the depth of the soil medium, it varies from 1.7m to 4.5m. For the irrigation arrangement layout and details of waterpoint, please refer to the site sketch as attached in Appendix E.

2. For Appendix D – ‘Part of the landscape area above Slip Road 8 occupied by additional elderly fitness facilities’:

Provided that the original proposed shrub and/or tree planting in this landscape area will not be affected, we have no comment on the above proposal.

Noted

The EP holder is reminded to seek comment from the future maintenance agent regarding the additional elderly fitness facilities, in particular the horizontal clearance requirements.

The acceptance from VPMO regarding the additional elderly fitness facilities have been obtained on 22 October 2018, please refer to Appendix D.

Noting that the location of proposed additional elderly fitness facilities is adjacent to the Slip Road 8, dense screen planting should be considered to protect users from the air pollution sources.

Please note that the proposed elderly fitness facilities was located on top of Slip Road 8 and away from tunnel portal. With the structure of screen wall along tunnel portal and planting area surrounding the elderly fitness facilities, the user would be protected from the air pollution source.


1

1.0 Introduction

In accordance with condition 2.16 of the Further Environmental Permit No. FEP-

10/364/2009/B, the purpose of this additional mitigation plan is to set out the noise and

visual mitigation measures of Slip Road 8 Section in Victoria Park, i.e. noise screening

structure with aesthetic design of the Central – Wan Chai Bypass Tunnel (Slip Road 8

Section) Project (hereafter SR8).

Landscape issue will be discussed in a separate landscape plan in accordance with the

condition 2.14 of FEP-10/364/2009/B.

Noise screening structure with aesthetic design forms part of works for Central – Wan Chai

Bypass as recommended in the approved EIA report (Registration No.: AEIAR-125/2008).

As the permit holder of the Further Environmental Permit No. FEP-10/364/2009/B, China

State Construction Engineering (Hong Kong) Limited (hereafter CSHK) would be

responsible for construction of the screening structure.

2.0 Scope of Works of SR8

In accordance with the conditions stipulated in the Environmental Permit No. EP-

364/2009/B and Further Environmental Permit No. FEP-10/364/2009/B, this plan aims to

reduce the noise & visual impacts of the Slip Road 8 on users of the Victoria Park during

the operation phase.

The scope of works mainly includes:

i) Construction of about 100m long Slip Road 8 tunnel structure in Causeway Bay

Typhoon Shelter (CBTS) by cut- and cover method;

ii) Construction of about 200m slip road 8 tunnel underneath Victoria Park Road and

within Victoria Park by cut-and- cover method;

iii) Construction of about 410m at grade carriageway connecting to Tsing Fung Street;

&

iv) A Landscape area in accordance with Figure 4.5 of the approved EIA report.

Location of noise screening structure with aesthetic design and landscape area, please refer

to Appendix A.


2

3.0 List of Reference Document

Relevant conditions in the EP and FEP are listed as follows for ease of references.

EP and FEP Condition Remarks

EP No. EP-364/2009, Condition 2.16

and

FEP-10/364/2009/B, Condition 2.16

- Referring to the Condition 2.16 stipulated

in Environmental Permit No. EP-364/2009

and FEP-10/364/2009/B, submission of

additional mitigation plan at least one

month prior commencement of the works.

- 4 hard copies & 1 electronic copy of

additional mitigation plan shall be certified

by ET Leader and verified by the IEC as

conforming to the relevant information and

recommendation contained in the approved

EIA Report (Register No.: AEIAR-

125/2008).

4.0 Key Factors Considered during Construction of Noise Screening

Structure with Aesthetic Design

The following factors have been taken into account during the preparation for this

additional mitigation plan

4.1 The proposed aesthetic design would be applied on the side facing Victoria Park and

the noise screening wall should be structure with compatible form, color and pattern

to create a harmonious visual relationship with Victoria Park. Different forms and

aesthetic design were considered.

Further to the noise screening structure proposed under the Additional Mitigation Plan

(Rev.02) approved on 09-04-2015, Noise Screening Structure will be constructed

without the wall pattern, a Planter Kerb will be constructed in front of the screen wall

and Bambusa Vulgaris cv. Wamin (BVW) will be planted. (Please refers to Appendix

B for the proposed planting plan and Appendix C for details on noise screening

structure).

4.2 Re-provisional works of the existing bowling green field prior to construction of noise

screening structure.


3

4.3 Diversion of traffic on Tsing Fung Street, Victoria Park Road & Island East Corridor

(IEC) to facilitate the construction works.

4.4 Plants established for the noise screening structure & landscape area. Please refer to

Appendix C for more details.

4.5 The purpose of the screen wall is to further reduce the traffic noise impact of Slip

Road 8. The screen wall is an additional measure to the noise mitigation measures

stated in the EIA report and therefore the overall performance on noise mitigation will

be better than the recommendations in the EIA.

5.0 Details of Proposed Noise Screening Structure

5.1 Taking into account of the key factors mentioned in Section 4 above & in accordance

with the Table 10.4 (Significant Landscape Impacts of the Proposed Works during

Construction Phase) of the approved EIA report, the construction works of noise screening

structure is designed and its details are elaborated below

(a) Approx. 1,900m2 of Victoria Park will be permanently alienated by the Slip Road

8,

(b) One bowling green court will be permanently alienated by the Slip Road 8,

(c) Existing trees will be affected by the roadworks and

(d) Existing trees will be affected by the reprovisioning of the affected facilities in the

Victoria Park including the reprovisioning of a bowling green, and

(e) Existing trees will be affected by the Landscape Deck across Victoria Park Road

5.2 Maintenance of planting & shrubs –

(a) To carry out the establishment period as stipulated in the Particular Specification,

(b) Liaise with the Engineer on site to tackle the earth works issue(s),

(c) Drawings shown indicative layout, final decision will subject to the site condition

& Engineer’s decision.

5.3 Change in alignment of structure & construction details, if any, would be subject to the

instruction & drawings of Highways Department.


4

6.0 Construction Schedule

The anticipated schedule of the noise screening structure is shown in Appendix A. It is

prepared based on the latest Works Programme and may subject to changes to cope with

the actual site situation and progress. Noise screening structure with aesthetic design would

be the permanent structure along the carriageway.

Construction of noise screening structure on site subject to the works carried out. Works

programme refers to Appendix A for details.

7.0 Tree & shrub planting amongst the Noise Screening Structure

The overall tree planting & shrub planting of noise screening structure is summarized and

enclosed in Appendix B.

8.0 Noise screening structure with aesthetic design

The detail section of noise screening structure, please refer to Appendix C for details.

9.0 Landscaping Area above Slip Road 8 change of design

Part of the Landscaping Area above Slip Road 8 was occupied by Elderly Fitness Area, as

instructed by AECOM on 22nd June 2017 (AECOM ref

CWN:PP:mplm:60095653/C8/M15/210/039/0950-2017006058T) (Appendix D refers).

Trees / shrubs will be planted inside the remaining Landscape Area. Please refer to

Appendix B for tree and shrub planting detail.


5

Appendix A

Location of Noise Screening Structure

with Aesthetic Design

& Landscape Area


6

Appendix B

Tree Planting Plan &

Shrub Planting Plan


7

Appendix C

Detail Section of Noise Screening Structure

& Wall Pattern of Noise Screening


8

Appendix D

Change of Landscaping Area above Slip

Road 8


9

Elderly Facilities with tree planting plan


10

Appendix E

Victoria Park Re-provisioning Irrigation

System Layout Plan

Contract No. HY/2010/08 Central – Wan Chai Bypass Tunnel (Slip Road 8 Section) Additional Mitigation Plan December 2018

5

Appendix A

Location of Noise Screening Structure

with Aesthetic Design

& Landscape Area

cat.yeung

新建印章

gabriel.wong

多邊形線段

gabriel.wong

圖說

Landscape Area

Contract No. HY/2010/08 Central – Wan Chai Bypass Tunnel (Slip Road 8 Section) Additional Mitigation Plan August 2018

6

Appendix B

Tree Planting Plan &

Shrub Planting Plan

gabriel.wong

多邊形線段

gabriel.wong

圖說

Landscape Area

gabriel.wong

多邊形線段

gabriel.wong

圖說

Lanscape Area


7

Appendix C

Detail Section of Noise Screening Structure

& Wall Pattern of Noise Screening

TS

¿ì̈

ó̄¦aº

Bowling Green

LLL

L

EASTERNCORRI

DOR

4.0

4.4

5.5

5.5

12.6

P

P

TS

ó̄¦aº¹C¼

Bowling Green

Playground

H

4.0

4.2

4.2

4.3

4.4

4.4

4.7

4.8

ISLAND EASTERN C

ORRIDOR

A/M

A/M

SLIP

ROAD 8

A/M

A

COMPOUND

NURSERY

Aó̄¦aº

Bowling Green

4.0

PLANTER KERB

EXISTING

MATCH WITH

BOWLING GREEN OFFICE

REPROVISIONED

PAVILION

REPROVISIONED

ARBOUR

BOWLING GREENREPROVISIONED

NEW ENTRANCE

FOOTPATHPROPOSED MATCH WITH

(TYPE 3)

PLANTER KERB

PROPOSED U-CHANNELCONNECTED FROM

WALL

EXISTING FENCE

MATCH WITH

DEMOLISHED

PLANTER TO BE

EXISTING

EXISTING FOOTPATHMATCH WITH

150

U-CHANNEL

225

U-CHANNEL

STEPPED

225 U-CHANNEL

STEPPED

225

U-CHANNEL

SKETCH NO.

Rev. Date Description Drawn Prepared Checked

(SLIP ROAD 8 SECTION)

CENTRAL - WAN CHAI BYPASS - TUNNEL

CONTRACT NO. HY/2010/08

CENTRAL - WAN CHAI BYPASS AND IEC LINK

SCALE

TITLE:

P

TS

Office

Victoria Par

k Fast F

ood

Kios

k

¿ì¨

ºû¦

ó̄¦aº

¹C¼

Bowling Green

Playground

SHR

PO

L

LL

LL

L

H

LLLL

LL

L L

L

L

L

L

LL

L

L

L

ISLAND

EASTERNCORRI

DOR

ªF°Ï

3.8

3.8

4.0

4.4

4.7

4.8

4.9

5.1

5.2

5.2

5.3

5.5

5.5

5.5

5.6

5.6

5.8

5.9

6.1

6.2

6.2

6.6

7.1

7.1

7.1

7.2

7.3

7.5

7.6

7.87.9

8.2

8.3

8.6

8.8

8.9 8.9

8.9

9.0

9.1

9.2

9.3

9.4

9.7

9.7

10.3

10.3

11.1

11.211.2

11.2

11.2

11.3

11.6

11.7

12.2

12.4

12.5

12.6

15.0

¹C¼Playground

²îSlipway

±Æ¤

H

W

M

Seawall

Outfall

L

L

L

L

L

L L

L

L

H

L

L

VICTORIA PARKROAD

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3.4

4.3

4.3

15.0

15.5

16.5

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ging R

oom

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Bowling Green

Skatin

g Area

Tennis C

ourts

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nd

Stan

d

Tennis C

ourts

Playground

Playground

WIP Sep 2007

LLLL

L

H

4.0

4.14.2

4.2

4.3

4.3

4.4

4.4

4.5

4.54.5

4.5

4.5

4.6

4.6

4.7

4.7

4.8

4.8

4.9

H

L

LEGEND:

KEY PLAN

ARBOUR

SECTION A-A

WALL

FENCE

SCREEN WALL

OFFICE

BOWLING GREEN

TO BE MAINTAINED

EXISTING FENCE WALL

-

1:500(A3)

14-06-17 FOR CONSTRUCTION CPL FF TH

1:5000SCALE

NO.60095653/T2/5542)

WORKING DRG.

(DETAILS REFER TO

BOUNDARY FENCE

MAINTAINED

FENCE TO BE

EXISTING BOUNDARY

60095653/T2/SK0269)

REFER TO SKETCH NO.

FENCE WALL (DETAILS

60095653/T2/SK0250)

REFER TO SKETCH NO.

(TYPE A PAVEMENT,

PROPOSED WALKWAY

3%

BEHIND REPROVISIONED BGO

LAYOUT PLAN FOR ADDITIONAL WALKWAY

F.F.L.

S.O.L.

PLANTING AREA

4500 C/C APPROX.

5x5 NOTCH IN FINISH AT

GRANOLITHIC FINISH WITH

25 THK. WASHED COLOURED

PLANTER KERB (TYPE 3)

A3 1:25SCALEA3 1:100SCALE

13-10-17 CPL TC THA

60095653/T2/SK0721D

WALKWAY

MAIN

IRRIGATION

FOUL SEWER

225 COVERED U-CHANNEL500

U-SHAPE STRUCTURE

CV WAMIN (BVW)

BAMBUSA VULGARIS

佛肚竹

大

WALKWAY

2500 MIN.

ARBOUR

2500

500

2000

APPROX.

1400

金連翹

連翹

花葉

STAGGER

'GOLDEN' (DRG)

AND DURANTA REPENS

'VARIEGATA' (DRV)

DURANTA REPENS

(TYPE 3)

PLANTER KERB WITH A252 WIRE MESH

GRADE 20/20 FOOTING

250

250

500

100

5025 25

200

LAYER

50 THK. BLINDING

300

50

100

PLANTER KERB

TO MATCH WITH EXISTING

PLANTER KERB (TYPE 3)

PLANTING AREA

60095653/T2/5522)

DRG. NO.

(REFER TO WORKING

PROPOSED GULLY

DETAILS ADDED

PLANTER & DRAINAGE

CPL TC TH21-11-17B

DETAIL '1'

PLANTING AREA1630

A3 1:25SCALE

DETAIL '1'

PLANTERPLANTER

AND DETAIL '1' ADDED

225 U-CHANNEL REVISED

AND SK0609)

60095653/T2/SK0759

SKETCH NOS.

60095653/T2/5522 AND

DRG. NO.

REFER TO WORKING

DRAINPIT (DETAILS

U-CHANNEL WITH

PAVEMENT

WITH TYPE A

TRANSITION AREA

C 07-02-18 KFC TC THSECTION A-A REVISED

NOTE 2 ADDED AND

SKETCH NO. 60095653/T2/SK0762.

FOR LIGHTING LAYOUT, REFER TO 2.

STATED.

MILLIMETRES UNLESS OTHERWISE

ALL DIMENSIONS ARE IN 1.

NOTES:

(TYPE 3)

PLANTER KERB

100

CABLE

LIGHTING

POST

LIGHTING

200

D 29-06-18 KFC TC THNEXT TO REPROVISIONED BG

DIVIDED PLANTER AREA

60095653/T2/SK0496)

SKETCH NO.

MANHOLE (REFER TO

EXISTING STORMWATER

60095653/T2/SK0496)

(REFER TO SKETCH NO.

STORMWATER MANHOLE

D

D

melody.chan

Line

melody.chan

Callout

soil depth varies from 1.7m to 4.5m for bamboo planting

A3 1 : 100

SCALE A1 1 : 50

NOTES:

NO. 60095653/T2/3011C TO 3013C.

THIS DRAWING IS READ IN CONJUNCTION WITH DRAWING 2.

SPECIFIED.

ALL DIMENSIONS ARE IN MILLIMETERS UNLESS OTHERWISE1.

SKETCH NO.






SCALE

TITLE:

75mm BLINDING LAYER

SCALE A1 1 : 50

FALL

FALL

A3 1 : 100

NO. SSD14)

(REFER TO HyD. STD.

TYPE 2 PARAPET

UTILITY TROUGH

UTILITY TROUGH

100 THK. PAVEMENTFINISHED ROAD LEVEL

WATERPROOFING MEMBRANE

(DRAWN AT S.O.L. SR08 CH254.675)

S.

O.

L.

SR

O8

SLIP ROAD 8

TO DRG. NO. 60095653/T2/2011

U-SHAPE STRUCTURE REFER

DETAILS FOR PIPE ALONG

FALL

(+mPD)

ACCESS LEVEL

MAINTENANCE

82451500 1500 3000

350

350

1000

AP

PR

OX. 2000

3000

VA

RI

ES

SCREEN WALL

CH240.00

CH230.00

CH220.00

CH210.00

M.J.

M.J.

M.J.

M.J.

6.50mPD

4.50mPD 4.50mPD 4.50mPD

4.70mPD

ELEVATION

6.70mPDU8A-1

350

FINISHED ROAD LEVEL

SCREEN WALL

SCREEN WALL WITH PAINT FINISH

WALL PATTERN DETAIL FOR NOISE SCREENING

A3 1 : 50

SCALE A1 1 : 25

BOWLING GREEN OFFICE

225 COVERED U-CHANNEL

金連翹

花葉連翹

STAGGER

'GOLDEN' (DRG)

AND DURANTA REPENS

'VARIEGATA' (DRV)

DURANTA REPENS

WAMIN (BVW)

BAMBUSA VULGARIS CV

大佛肚竹

3%

(TYPE 3)

PLANTER KERB

LIGHTING CABLE

FOUL SEWER

FENCE WALL

500

MAIN

IRRIGATION

200500

2000

(TYPE 3)

PLANTER KERB

APPROX.

1400

PLANTER 500 MIN. WALKWAY 500 ARBOUR PLANTER U-SHAPE STRUCTURE

- 11-07-18 AS BUILT KFC TC TS

SCREEN WALL ASBUILT

60095653/T2/SK0830 AS SHOWN

TYPICAL SECTION OF STRUCTURE SLAB

mPD

3

5

7

1000

FENCE

BOUNDARY


8

Appendix D

Change of Landscaping Area above Slip

Road 8


9

Elderly Facilities with tree planting plan

gabriel.wong

圖說

Elderly Facilities

gabriel.wong

多邊形線段

gabriel.wong

多邊形線段

gabriel.wong

圖說

Landscape Area

gabriel.wong

多邊形線段

gabriel.wong

圖說

Landscape Area


10

Appendix E

Victoria Park Re-provisioning Irrigation

System Layout Plan

P

TS

Office

Victoria Par

k Fast F

ood

Kios

k

¿ì ¤

”ßƒ

¤¨⁄

§Ö?

fló ƒa”

„C…

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Playground

SHR

PO

L

LL

LL

L

H

LLLL

LL

L L

L

L

L

L

L

L

ISLAND

EASTERNCORRI

DOR

“F° ˇ

3.8

4.0

4.4

4.7

4.8

4.9

4.9

4.9

5.1

5.2

5.2

5.2

5.2

5.2

5.3

5.5

5.5

5.5

5.6

5.6

5.8

5.9

6.2

6.6

7.1

7.1

7.1

7.2

7.3

7.5

7.6

7.87.9

8.2

8.3

8.6

8.8

8.9 8.9

8.9

9.0

9.1

9.2

9.3

9.4

9.7

9.7

10.3

10.3

11.1

11.211.2

11.2

11.2

11.3

11.6

11.7

12.2

12.4

12.5

12.6

15.0

H

L

„C…RCP

Playground

–̆⁄

Seawall

Outfall

L L

L

L

LL

L

L L

L

L

L

H

L

VICTORIA PARKROAD

” ß¶

3.4

4.3

4.3

15.5

16.5

P

P

TS

TS

Chan

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Shroff Office

Table Tennis

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„C…

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Bowling Green

Skatin

g Area

Tennis Courts

Tennis Courts

Tennis C

ourts

Sta

nd

Stan

d

Tennis CourtsVicto

ria Park

Centre Court

Tennis C

ourts

Sta

nd

Stan

d

Hand

ball

Field

Playground

Playground

WIP Sep 2007

LL

L

LL

L

H

ƒæ⁄

H

4.0

4.14.2

4.2

4.3

4.3

4.4

4.4

4.5

4.54.5

4.5

4.5

4.5

4.6

4.6

4.7

4.7

4.7

4.7

4.8

4.8

4.8

4.8

4.8

4.9

A/M

T

T

T

T

T

T

T

T

T

T

T

T

T

T

T

T

T

22

22

22

42

22

76

76

22

22

22

22

22

22

1"

25GI

A/M

T

T

T

T

T

T

T

*

T

T

T

WP 1-2

WP 1-3

WP 2-3

DN 25SV

22

25

25

DN 25S

V

22

DN 25SV

42

25

76

76

22

WP 5-1

*

DN 25SV

DN 25SV

*

25

T

*WP 1-6

*WP 1-4

*WP 1-6

*WP 4

-2

*WP 4-1

*WP 1-1

DN 25SV

DN 25

SV

WP 4-3

DN 25

SV

DN 25S

V

DN 25S

V

DN 25SV

DN 25S

V

WP 1-

5*DN

25SV

DN 25SV

DN 25SV

DN 25SV

DN 25SV

DN 25S

V

SKETCH NO.






SCALE

TITLE:

816200 N

816100 N

816000 N

ISLAND

EASTERN CORRI

DOR

A/M

A/M SLIP

ROAD 8

F/P

A/M

837500

E

837600

E

LEGEND:

WORKS BOUNDARY

EXISTING IRRIGATION PIPE

NOTES:

FROM VICTORIA PARK.

SHALL BE AGREED WITH THE REPRESENTATIVES

ANY TEMPORARY SUSPENSION OF WATER SUPPY

OTHER FACILITIES THAT REQUIRED WATER SUPPY,

THE WATER SUPPLY TO IRRIGATION POINT AND

WATERMAIN, THE CONTRACTOR SHALL MAINTAIN

3. BEFORE THE COMPLETION OF THE PERMANENT

WATERMIANS.

OF THE CONNECTION POINT TO THE EXISTING

RESPONSIBLE TO VERIFY THE EXACT LOCATION

INDICATIVE ONLY. THE CONTRACTOR IS

1. THE ALIGNMENT OF EXISTING WATERWORKS IS

REFER TO DRG. 60095653/T2/5532-5533.

2. DETAILS OF WATERWORKS WITHIN VICTORIA PARK

837400

E

ON DRG. 60095653/T2/5533.

IRRIGATION POINT SHALL BE TYPE I AS SHOWN

4. UNLESS OTHERWISE SPECIFIED, THE PROPOSED

UNLESS OTHERWISE STATED.

6. ALL PIPES SHALL BE JOINTED BY SPIGOT AND SOCKET

PIPE SHALL BE 20/20.

7. CONCRETE GRADE FOR HAUNCHING AND SURROUND TO

FOR FUTURE CONNECTION.

8. BLANK FLANGE SHALL BE PROVIDED TO THE PIPE ENDS

UNDERGROUND.

9. THRUST BLOCKS SHALL BE PROVIDED AT ALL BENDS

CONCENTRIC TEE PIECES UNLESS OTHERWISE AGREED.

11. ALL TEE OFFS EXCEPT THE WASH OUT TEES SHALL BE

STANDARD DRAWING NO. WSD 1.4 & WSD 1.40.

14. FOR TYPICAL DETAILS OF THRUST BLOCK REFER TO WSD

WATERMAIN ARE 1.5MPa AND 1.0MPa RESPECTIVELY.

15. TESTING AND WORKING PRESSURE FOR THE PROPOSED

OF DIFFERENT ZONES, REFER TO HyDTC NO. 3/90.

KERB ZONE AND 600mm IN FOOTWAY ZONE FOR DEFINITION

COVER OF 1000mm IN CARRIAGEWAY ZONE, 1500mm IN

13. ALL UNDERGROUND WATERPIPES SHALL HAVE MINIMUM

LAID UNDERGROUND.

16. ALL PIPES AS INDICATED ON THE DRAWING SHOULD BE

THE PIPE LAYING WORKS AS SHOWN ON THE DRAWINGS.

WIS 4-22-11 AND WIS 4-32-14 SHOULD BE ADOPTED FOR

5. POLYETHYLENE PIPE AND FITTING CONFORMING BS 6572,

DRAWING NO. WSD 1.31.

WATERMAINS IN ACCORDANCE WITH WSD STANDARD

12. IDENTIFICATION TAPES SHALL BE LAID ALONG ALL

F/P

A/M

TEXISTING IRRIGATION POINT

T

TO BE DEMOLISHED

EXISTING IRRIGATION POINT

*

SV SLUICE VALVE

GV GATE VALVE

SAV SINGLE AIR VALVE

DOUBLE AIR VALVEDAV

WOV WASH OUT VALVE

WALL/ABUTMENT WALL

RETAINING

STRUCTURE SLAB

U-SHAPE STRUCTURE

FOOTPATH

VALVE

AMENITY AREA

IRRIGATION POINT

VICTORIA HARBOUR

REDE

VELOP

MENT P

ROJECT

VICT

ORIA

PARK SWI

MMING

POOL

WATERMAI

N TO

BE L

AID

UNDER

CWB PROJ

ECT

LAID

UNDER

WATERMAI

N TO

BE

IRRIGATION MAIN

TO BE DEMOLISHED/ABANDONED

EXISTING IRRIGATION MAIN

SHALL BE INSTALLED IN PLANTERS

10. WATER PIPES AND WATER BOXES OF IRRIGATION SYSTEM

APPROVAL PRIOR TO FIBRICATION AND ASSIMBLY.

IRRIGATION PIPES AND FITTINGS FOR ENGINEER’S

CONTRACTOR SHALL SUBMIT SHOP DRAWINGS OF THE

17. THE PIPE FITTINGS ARE INDICATIVE ONLY. THE

EXTRACTED FROM WORKING DRAWING No. 60095653/T2/5531B 60095653/T2/SK0536 1:1000(A3)

- PC TH05-04-17 SYC

* 25

F/P

A/M

IRRIGATION SYSTEM LAYOUT PLAN

VICTORIA PARK REPROVISIONING

ALIGNMENT REVISED

IRRIGATION POINT AND

60095653/T2/SK0667

REFER TO SKETCH NO.

REPROVISIONED BOWLING GREEN

DETAILS OF IRRIGATION SYSTEM AT

IRRIGATION MAIN

EXISTING

CONNECTED TO

IRRIGATION MAIN

EXISTING

CONNECTED TO

IRRIGATION POINT

CONNECTED TO EXISTING


CONNECTED IRRIGATION TO


CONNECTED IRRIGATION TO

WP 5-2

centralcentral – wan chai bypass tunnel (slip road section 8) contract no. hy/2010/08 additional...

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