Boulder bars at 2.2 metre

spacings and ramp slope of 1:20.

5.854

5.638

5.172

4.690

4.480

6.586

2200020000

17195

Boulder bars at 3 metre spacings

and ramp slope of 1:30.

Approximate head drop of

100mm between boulder lines.

Fish resting pool.

Existing weir structure to be broken out where

required to allow boulder bar construction.

2200

Existing sheet pile cut-off.

Upper fish pass channel

approx. bed level.

Rip-rap sealed with 10-64mm

graded granular surface layer

of 150mm minimum thickness.

8.11

9.10

8.60

6.05

Q10

4.395

Q95

4.380

Q10

7.050

Q95

6.986

5.495

6.395

4.854

10-64mm graded granular material

minimum 150mm thick between

boulder bars above existing slab.

Ramp slope change

from 1:30 to 1:20.

5.854

Sheet pile wall.

Q10

4.395

Q95

4.380

Q10

7.050

Q95

6.986

2200020000

17195

Boulder bars at 3 metre spacings

and ramp slope of 1:30.

Approximate head drop

of 100mm between

boulder lines.

Fish resting pool.

Existing weir structure to be

broken out where required to

allow boulder bar construction.

2200

Existing sheet pile cut-off.

Boulder bars at 2.2 metre

spacings and ramp slope of 1:20.

Lower fish pass channel

approx. bed level.

Retaining sheet

pile wall.

Fish pass entrance.

8.11

9.10

8.60

Top of reinforced concrete

channel wall.

Concrete channel wall

keyed into structure.

6.05

5.495

6.395

4.854

3.986

5.854

6.586

10-64mm graded granular material

minimum 150mm thick between

boulder bars above existing slab.

Rip-rap sealed with 10-64mm

graded granular surface layer

of 150mm minimum thickness.

Main channel.

Boulders to be embedded

by minimum of 50% of

their nominal diameter

into rip-rap.

Existing channel wall.

Sheet pile walls.

Rip-rap fill sealed with 10-64mm

graded granular surface layer of

150mm minimum thickness.

1:20 slope rock ramp.

2600 2600

DWL

DWL

Timber cladding on

exposed sheet piles.

200mm deep gaps in boulder

bars approx. 300mm wide.

Pass bed level -

approx. 5.30 metres.

Pass bed level -

approx. 4.20 metres.

6.03

4.92

8.110

Existing footbridge and radial gates and

associated electrical items to be removed.

Existing sluice gate to be removed

to allow rock ramp construction.

CC

A

A

Sheet piling.

250mm thick reinforced

concrete fish pass wall.

500mm wide by 200mm deep notch

cut into weir to best attract fish

towards fish pass entrance.

Flow direction.

2 metre entrance to fish

pass to slope up from

bed level with rip-rap.

2.6 metre wide rock

ramp fish pass with

1:20 slope and 2.2

metre spacings.

B

B

DD

Existing sluice gate to be replaced

with 300mm thick weir 900mm

above existing base slab.

Boulders of 0.8 metres dieameter with gaps

of 0.3 metres to allow passage of flow. Gaps

are to be partially closed with flat boulders

embedded to rise 0.2 metres above bed.

5.3 metre wide rock ramp fish pass

with 1:30 slope and 3 metre spacings.

5.3 x 2 x 0.4 metre

resting pool.

Rock ramp width reduced to 2.6

metres at this location.

DWL

6.63

8.110

250mm thick reinforced

concrete wall to separate

pass from main channel.

Wall to slope down with

channel.

Reinforced concrete

separating wall tied into

existing structure.

Boulders to be embedded by

minimum of 50% of their

nominal diameter into rip-rap.

Existing channel wall.

Existing concrete

slab to be broken

out locally to allow

boulders to be

embedded.

Main channel.

10-64mm graded granular

surface layer.

1:30 slope rock ramp.

5300

Total gaps of 1.5m across

the channel.

200mm deep gaps in

boulder bars approx.

300mm wide.

Pass bed level -

approx. 6.00 metres.

ZENITH SLUICE

FISH RAMP DESIGN

ENV0001296C-CH2-00-2D0-DR-C-0002

1:200

P02

P01.1 18/04/19 INITIAL DESIGN

P02 24/05/19 HALF RAMP DESIGN

ENV0001296C

B228E006

Safety:

· Fast moving water

· Major lifting

· Working within cofferdam / stoplogs

Environment:

· Concreting in / adjacent to watercourse

· Flood risk from temporary cofferdam

· Plant and mechanical machinery in channel

SAFETY, HEALTH AND ENVIRONMENTAL

INFORMATION

In addition to the hazards / risks normally associated with the types of work detailed on this

drawing, note the following :

It is assumed that all works will be carried out by a competent contractor working, where

appropriate, to an approved method statement.

Maintenance and operation:

· No unusual maintenance / operational techniques

Decomissioning/demolition:

· No unusual construction techniques

Notes:

1. All levels are shown in meters Above Ordnance Datum

(Newlyn) unless stated otherwise.

2. All dimensions are in millimetres unless stated otherwise.

3. Drawing to be read in conjunction with Costing Requirements

Note.

LOWER MOLE FAS

MAJOR REFURBISHMENT

Section D-D

Scale 1:200 A1 / 1:400 A3

Section A-A

Scale 1:50 A1 / 1:100 A3

Plan on Rock Ramp

Scale 1:200 A1 / 1:400 A3

Legend

Drawing status

Drawing number

Scale

Client no.

Jacobs No.

Drawing title

DO NOT SCALE

Project

Client

Apprv'd

Purpose of revision

Rev Rev. Date Drawn Checkd Rev'd

© Copyright 2018 Jacobs U.K. Limited. The concepts and information contained in this document are the property of Jacobs.

Use or copying of this document in whole or in part without the written permission of Jacobs constitutes an infringement of

copyright. Limitation: This drawing has been prepared on behalf of, and for the exclusive use of Jacobs' Client, and is subject

to, and issued in accordance with, the provisions of the contract between Jacobs and the Client. Jacobs accepts no liability or

responsibility whatsoever for, or in respect of, any use of, or reliance upon, this drawing by any third party.

Rev

Floor 2 Cottons Centre, Cottons Lane, Golden Lane Estate, London Bridge, London, SE1 2QG

Tel: +44 (0) 161 873 8500 Fax: +44(0)161 873 7115

www.jacobs.com

Section C-C

Scale 1:200 A1 / 1:400 A3

Section B-B

Scale 1:50 A1 / 1:100 A3