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PondPond
BU
S
ST
OP
BU
S
ST
OP
invtinvt
562
561
585
585
586
586
587
587
588
588
589
589
590
590
591
591
592
592
593
593
s
h
e
d
s
h
e
d
587
586
585
588
BCP
BCP
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225Ø
150Ø
225Ø
150Ø150Ø
225Ø
300Ø
>
>
>IL 97.70
IL 96.70
IL 95.80
98.80 XIL 94.99
S8 (1500Ø)CL 97.56
Pipe 1.006
600Ø 1:33 / 12.0m
Concrete
IL 94.69
S10 (1500Ø)CL 96.95
Pipe 1.009
600Ø 1:129 / 1
1.6m
Concrete
IL 94.60
F7 (1200Ø)CL 97.55
IL 94.15
F8 (1200Ø)CL 97.29
Pipe
1.0
06
150Ø
1:5
0 /
22.7
m
Clay
IL 92.55
F10 (1200Ø)CL 96.96
Pipe
1.0
0715
0Ø 1
:17
/ 27
.0m
Clay
IL 92.36
F11 (1200Ø)CL 96.72
Pipe
1.0
0822
5Ø 1
:109
/ 2
0.2m
Clay
Pipe
1.0
0922
5Ø 1
:148
/ 5
0.2m
Clay
Pipe
N2
1.00
022
5Ø 1
:81
/ 49
.7m
Clay
Headwall 2IL 94.250 (825Ø)
IL 94.86
S9 (1500Ø)CL 97.29
Pipe
1.0
07
600Ø
1:1
57 /
20.
4mCo
ncre
tePi
pe 1
.008
600Ø
1:1
60 /
27.
2mCo
ncre
te
825Ø 1:352
Pipe 1.005
150Ø 1:55 / 13.8m
Clay
96.88
IL 96.500
x Lat SW7 (1200Ø)CL 97.850
IL 96.300
x Lat SW8 (1200Ø)CL 97.650
150Ø 1:11
IL 96.002
x Lat SW9a (1200Ø)CL 97.399 150Ø 1:13
IL 95.700
x Lat SW10 (1200Ø)CL 97.079
150Ø 1:14
IL 95.300
x Lat SW11 (1200Ø)CL 96.796
150Ø 1:98
IL 96.400
x Lat FW6 (1200Ø)CL 97.875
IL 96.100
x Lat FW7 (1200Ø)CL 97.667
150Ø 1:5
IL 95.500
x Lat FW10a (1200Ø)CL 97.101
150Ø 1:2
IL 95.428
x Lat FW11 (1200Ø)CL 96.834
150Ø 1:2
IL 95.12
S11 (1200Ø)CL 96.71
150Ø 1:47
150Ø 1:10150Ø 1:11
Road 1
0.0
10.0
20.0
3
0
.0
4
0
.0
5
0
.0
6
0
.0
7
0
.0
8
0
.0
9
0
.0
100.0
110.0
120.0
1
3
0
.0
1
4
0
.
0
1
5
0
.0
160.0
1
7
0
.
0
1
8
0
.
0
IL: 95.80m
F33
IL: 95.60mF35
IL: 95.50m
F37
CL: 98.759m
IL: 95.30m
F39
IL: 94.90m
F41
IL: 94.450m
F43
IL: 94.325m
Existing
CL: 96.839m
IL: 93.953m
S32
IL: 98.725m
HW1
IL: 98.50m
S36
IL: 98.20m
HW2
IL: 97.50m
HW3
IL: 96.00m
S76
IL: 96.665m
S78
IL: 96.15m
S82
IL: 96.65m
S84
IL: 96.575m
S86
IL: 96.425m
S88
IL: 96.20m
150Ø
1/1
18
11.7
67m
1.0
16
4
5
0
Ø
1
/
2
2
1
2
2
.
1
3
7
m
5
.
0
0
6
1
5
0
Ø
1
/
1
1
7
2
3
.
3
4
3
m
1
.
0
1
5
225Ø
1/2
76
20.7
13m
7.0
01
2
2
5
Ø
1
/1
5
8
1
1
.8
4
0
m
7
.0
0
0
150Ø 1/38
14.247m 1.021
150Ø
1/110
13.727m
1.020
4
5
0
Ø
1
/1
5
4
2
3
.0
3
8
m
5
.0
0
8
450Ø
1/249
12.428m
7.003
600Ø 1/20
6.118m 1.016
600Ø 1/6
4.283m 1.017
5.900m
1.014
1
5
0
Ø
1
/1
2
0
5
4
.0
0
2
m
1
.0
1
9
3
0
0
Ø
1
/2
3
0
1
7
.2
4
1
m
7
.0
0
2
150Ø
1/1
14
45.5
12m
1.0
18
1
5
0
Ø
1
/1
0
7
2
1
.4
7
7
m
1
.0
1
7
450Ø
1/52
21.592m
5.007
OF1
OF2
IL: 98.518m
OF3
IL: 98.325m
3
0
0
Ø
1
/1
4
0
2
8
.9
5
8
m
O
v
e
rflo
w
P
ip
e
2
3
0
0
Ø
1
/1
4
0
2
6
.6
7
4
m
O
v
e
rflo
w
P
ip
e
3
300Ø
1/1
22
15.3
03m
Overf
low
Pip
e 3
Ex. Pond
98.5m Bed Level
300mm Freeboard
99.900m Top of Bank
S200
IL: 95.597m
S202
IL: 95.468m
Existing
CL: 96.856m
IL: 95.30m
2
2
5
Ø
1
/1
0
0
1
2
.9
3
2
m
9
.0
0
0
225Ø
1/1
00
16.8
41m
9.0
01
100.300
FFL
100.750
FFL
101.200
FFL
101.350
FFL
101.500
FFL
G
A
R
A
G
E
1
0
1
.3
5
0
G
A
R
A
G
E
1
0
1
.0
5
0
96.301
96.364
96.6
14
9
6
.8
6
4
9
7
.1
1
4
9
7
.1
3
7
9
7
.3
6
4
9
7
.6
1
4
9
7
.8
6
1
9
8
.0
6
1
9
8
.1
7
0
9
8
.2
0
1
98.3
26
98.389
98.4
51
98.501
98.575
98.638
9
8
.7
0
0
9
8
.7
7
9
9
8
.8
2
6
9
8
.9
5
3
9
8
.9
9
0
99.077
9
9
.
1
6
0
9
9
.
1
9
8
9
9
.
3
2
3
96.296
96.296
96.300
96.363
96.6
13
9
6
.8
6
3
9
7
.1
1
3
9
7
.1
3
6
9
7
.3
6
3
9
7
.6
1
3
9
7
.8
6
0
9
8
.0
6
0
9
8
.1
6
9
9
8
.2
0
0
98.3
25
98.388
98.4
49
98.499
98.574
98.637
9
8
.6
9
8
9
8
.7
7
6
9
8
.8
2
3
9
8
.9
4
8
9
8
.9
8
1
99.073
9
9
.
1
5
9
9
9
.
1
9
8
9
9
.
3
2
3
9
9
.
3
8
7
Note - Existing
Drainage Connection
Details TBC & altered
accordingly to suit the
Proposed
invt
invt
w.l.
w.l.
w.l.
post
98.41
98.60
98.51
98.45
98.46
98.52
98.76
99.27
99.43
99.5099.56
99.96
100.08
101.45
100.08
99.95
100.29
100.17
99.79
99.51
98.98
98.78
99.11
97.80
97.71
97.74
95.94
95.71
96.1396.55
96.71
96.90
97.17
97.48
98.02
98.76
98.39
98.44
98.62
98.55
98.54
98.48
98.28
98.49
98.53
98.24
98.41
98.17
97.98
97.77
97.56
97.67
97.61
97.70
97.77
97.89
98.13
98.2598.23
98.52
98.33
98.07
97.84
97.69
97.64
97.49
97.35
97.19
96.00
96.32
96.66
96.85
97.05
97.20
97.35
97.49
97.45
97.60
97.93
98.31
98.51
98.16
97.79
97.52
97.32
97.00
96.69
96.65
96.79 96.3496.17 95.70
96.54
96.50
96.17
96.50
97.02
97.72
98.17
98.51
99.17
100.12
99.18
98.63
98.22
97.64
97.17
96.91
97.26
97.48
97.61
97.98
98.42
99.03
99.59
100.27
99.75
99.41
99.28
98.72
98.88
98.23
98.28
97.93
98.17
98.27
98.60
98.61
99.71
99.63
99.40
99.19
99.68
99.90
100.15
100.35
100.3899.25
99.13
100.70
100.25
98.79
98.43
98.28
98.18
97.77
97.47
97.27
97.00
96.01
96.31
97.57
97.43
97.31
96.87
96.84
96.64 96.28
96.01
96.59
96.92
97.09
97.35
98.60
98.87
99.03
98.25
97.27
97.67
97.81
97.55
97.5398.28
97.43
97.99
98.23
98.44
98.49
98.44
98.72
98.72
98.78
98.63
98.46
98.7099.06
98.10
96.26
98.51
97.61
98.70
98.78
98.42
99.90
97.47
99.16
99.22
99.29
99.23
99.40
98.85
99.76
100.40
97.51
97.01
97.23
95.86
97.48
95.44
Pond
96
100
100
98
98
98
98
98
98
98
98
100
98
98
LEVEL OF EXISTING ROAD AT POINT OF TIE IN WITH
PROPOSED SITE ROAD MUST BE CHECKED BEFORE
COMMENCEMENT OF WORKS AND ANY DISCREPANCIES
REPORTED IMMEDIATELY.
FOUNDATIONS FOR PLOTS ADJACENT TO ADOPTABLE
SEWERS LESS THAN 5m AWAY FROM PLOT WALL TO BE
LOWER THAN THE INVERT LEVELS OF SEWER TO PREVENT
ANY LOADING FORCES ON THE PIPEWORK
POLISHED STONE VALUES, AGGREGATE SIZES,
AGGREGATE ABRASION VALUES AND PENETRATION
VALUES OF ALL SURFACE COURSE MATERIALS MUST BE
CHECKED WITH HIGHWAY AUTHORITY AND COMPLY WITH
ALL CODES OF PRACTICE PRIOR TO ORDERING AND
LAYING OF MATERIALS
ALL ADOPTABLE DRAINAGE MUST COMPLY WITH SEWERS
FOR ADOPTION 6TH EDITION AND ADOPTING WATER
AUTHORITIES REQUIREMENTS
S106 APPLICATION
A SECTION 106 APPLICATION TO SEVERN TRENT WATER
MUST BE COMPLETED FOR THE RE USE OF ANY EXISTING
CONNECTION INTO THE EXISTING PUBLIC SEWERAGE
SYSTEM OR THE CONSTRUCTION OF A NEW CONNECTION.
AN APPLICATION WILL BE REQUIRED FOR THE FOUL AND
SURFACE WATER DRAINAGE ARRANGEMENTS AND THIS
SHOULD BE COMPLETED BY THE CONTRACTOR.
MANHOLE RINGS SHALL NOT BE CUT
A SCREEN AND SUMP IS TO BE FITTED OVER THE
OUTGOING PIPE TO THE LAST NEW SURFACE AND FOUL
MANHOLES BEFORE ENTERING THE EXISTING SEWERS IN
ACCORDANCE WITH SEWERS FOR ADOPTION 6.
THE SCREEN SHALL ONLY BE REMOVED ONCE ON SITE
CONSTRUCTION WORKS HAVE BEEN COMPLETED
SURFACE WATER SEWER NETWORK DESIGNED IN
ACCORDANCE WITH ROADS IDENTIFIED ON ORIGINAL
DRAINAGE AND LEVELS CONCEPT LAYOUT AND POSITIONS
ARE SUBJECT TO CHANGE
ALL EXISTING SEWER LEVELS AND LOCATIONS TO BE
CHECKED AND VERIFIED PRIOR TO ANY CONSTRUCTION
WORKS AND ANY DISCREPANCIES REPORTED
IMMEDIATELY.
MATERIALS FOR ADOPTABLE SEWERS
PIPES 150mm - 300mm DIA :-
SURFACE AND FOUL WATER PIPES ARE TO BE EXTRA
STRENGTH VITRIFIED CLAY WITH FLEXIBLE MECHANICAL
JOINTS. PIPES MUST COMPLY WITH THE RELEVANT
REQUIREMENTS OF BS EN 295-1:2013 AND BS 65:1991
(surface water pipes only).
PIPES > 300mm:-
DIA SURFACE AND FOUL WATER PIPES ARE TO BE HIGH
STRENGTH CONCRETE. CONCRETE PIPES AND FITTINGS
WITH FLEXIBLE JOINTS SHALL COMPLY WITH THE
RELEVANT PROVISIONS OF BS 5911-1:2002.
SURFACE WATER MANHOLE S36 IS TO BE FITTED WITH A
HYDROBRAKE.
THIS DRAWING IS TO BE READ IN CONJUNCTION WITH ALL
RELEVANT DESIGN DRAWINGS AND OTHER INFORMATION
ANY POND BED LINING AND / OR BANK STABILISATION
METHODS REQUIRED FOR BALANCING POND TO BE
ASSESSED BY STRUCTURAL ENGINEER
IMPORTANT:
HEADWALLS WILL REQUIRE THE ENVIRONMENT AGENCY'S
PRIOR WRITTEN CONSENT UNDER SECTION 109 OF THE
WATER RESOURCES ACT 1991 BEFORE ANY
CONSTRUCTION TAKES PLACE
HEADWALLS TO BE PRE_CAST CONCRETE.
PIPES OF DIFFERENT DIAMETERS ENTERING MANHOLES
SHOULD BE INSTALLED WITH SOFFITS AT THE SAME LEVEL
THE OUTSIDE OF THE SEWER SHOULD BE IN VEHICLE
CARRIAGEWAY (NOT FOOTPATH) AND BE AT LEAST 1m
FROM KERB LINE. THE OUTSIDE MANHOLES SHOULD BE AT
LEAST 0.5m FROM THE KERB LINE.
TREES ON THE DRAWING ARE EXISTING OR PROPOSED
AND ADHERE TO B.2.3 (PAGE 33) OF SFA6. THE TREES
SPECIFIED WILL BE AS PER SEWERS FOR ADOPTION AND
POSITIONED. WHERE CLEARANCES WITH VEGETATION IS
NOT ACHIEVABLE, APPROPRIATE ROOT PROTECTION WILL
BE PROVIDED
THE MATERIALS TO BE USED ARE SUITABLE FOR THE
GROUND CONDITIONS
WHERE PIPE CROSSING, PLASTIC MEMBRANE TO BE USED
FOR PROTECTION TO ELIMINATE CHANCES OF CROSS
CONTAMINATION
PRELIMINARY
SUBJECT TO SECTION 38 & 104
APPROVAL
2
7
Notes:
1) Larger sizes may be required for manholes on bends or where there are junctions.
2) May be reduced to 675 by 675 where required by highway loading considerations, subject to a safe system of work being specified.
3) Not applicable due to working space needed.
4) Minimum height of chamber in shafted manhole 2m from benching to underside of reducing slab.
5) Min clear space between ladders or steps and the opposite face of the shaft should be approximately 900mm.
6) Winch only - no steps or ladders, permanent or removable
7) The minimum size of any manhole serving a sewer (i.e any drain serving more than one property) should be 1200 mm x 675 mm
rectangular or 1200 mm diameter
600
600
600
na³
Circular
diameter
675 x 675
675 x 675
675 x 675
1050
1200
900
1050 x 800
1200 x 800
900 x 800
6
5
5
Steps
Ladder
Winch
1200
1200
1200
The larger of 1800
or (DN+775)
1000
1200
1200
The larger of 1800
or (DN+450)
Circular
diameter
4
Min clear
opening size¹
Rectangular
length and width
2
750 x 675
1200 x 675
7
Manhole shaft
> 3.0m deep to
soffit of pipe
1200 x 1000
1200 x 1075
1350 x 1225
1800 x
(DN+775)
750 x 675
1200 x 675
1200 x 750
1800 x
(DN+450)
Min internal
dimensions¹
Rectangular
length and width
≤ 225
300
375-450
>450
≤ 150
225
300
>300
Size of largest
pipe (DN)
Manhole
< 1.5m deep to soffit
> 1.5m deep to soffit
Type
Minimum Dimensions for Manholes
Severn Trent Water Manhole Requirements For Sewers
For Adoption 6th Edition - Adoptions & Diversions
General requirements
Copies of delivery notes for concrete and pipe bedding will be required intermittently
as the job progresses. All other component units must be kite-marked.
Channels and Benching
All chambers with pipe sizes 150mm, 225mm, 300mm must have swept bends and
channels. All benching to be a minimum 40mm thick granolithic concrete trowelled to
a smooth finish.
Ironwork In Manholes
If the chamber is less than 3m deep we require double encapsulated step rungs
unless otherwise approved. If the chamber is over 3m deep we require hot dipped
galvanised mild steel ladders. There must be 900mm between ladder and back of
shaft. Depth is measured from finished cover level to the top of the benching. The
maximum distance between cover level and the first step must be 675mm.
Brickwork
Min 2 max 4 courses under frame and must be solid class B engineering bricks or
concrete spacing rings neatly pointed up. English Bond to be used on all brickwork.
Sulphate resisting cement must be used in all locations.
Cover and Frames
Cover slab opening, cover and frames must be 675 x 675 unless otherwise approved.
DN400 shall be used at all locations. On spine roads must be 150mm deep. On
residential cul-de-sacs 100mm may be used subject to approval. Frames for
manhole covers should be bedded in a polyester resin bedding mortar in all situations
where covers are sited in NRSWA Road Categories I, II or III.
'Infill' type covers should not be used.
In block paved areas 150mm deep frames must be used (in accordance with cl 2.8.6
SfA6 p.25)
Laterals
They should be laid to the same standard as public sewers. They should have no
changes of line or gradient between the sewer and the demarcation chamber. They
should have an adoptable manhole as the demarcation chamber unless there is only
on property when a plastic chamber to BS EN 13598-2:2009 is allowed. Lockable
B125 and A15 covers may be allowed in certain locations subject to approval. The
demarcation should be inside the boundary of the property, no more than 1m inside
the boundary, preferably in the driveway and not in the wheel tracks of vehicles.
FOUL WATER
Manhole
Pipe line
Direction Arrow
Rising Main
Demarcation Chamber*
SURFACE WATER
Manhole
Pipe line
Direction Arrow
Demarcation Chamber*
HIGHWAY DRAINAGE
Manhole
Gully
Highway Drain /
Gully Connection
OTHER
Existing Sewers
to be abandoned/
grubbed up in accordance with
Severn Trent Water Specification
* Demarcation chambers to be constructed as per
adoptable manhole construction details depending
on chamber depth. A 450Ø Inspection chamber
can be used providing lateral only serves one plot.
X X X X
Client
Title
Status
Date CreatedScale @ A0
PM/Checked byDrawn By
Drawing NumberRev
Project
Job Ref
rpsgroup.com/uk
c 2018 RPS Group
Notes
1. This drawing has been prepared in accordance with the scope of RPS’s
appointment with its client and is subject to the terms and conditions of that
appointment. RPS accepts no liability for any use of this document other than
by its client and only for the purposes for which it was prepared and provided.
2. If received electronically it is the recipients responsibility to print to correct scale.
Only written dimensions should be used.
MAKING
COMPLEX
EASY
Salisbury House, 2A Tettenhall Road,
Wolverhampton, West Midlands, WV1 4SA
T: 01902 925500 E: [email protected]
Preliminary AG
AAC5560
NJEJ
1:200
04.03.20
900-3 P01
St. Modwen Homes
Phase 2B
Uttoxeter
Engineering Layout
Sheet 2
Rev Description Date Initial Checked
P01 Latest Layout added, slight amendments made
to drainage.
20.03.20 NJEJ AG
For guidance only. Do not scale off this drawing
1:20 -
5m4m400mm
3m300mm
2m200mm
1m100mm0
0
20001800160014001200800mm600mm400mm200mm0
9m 10m0 1m 2m 3m 4m 5m 6m 7m 8m
1000
1:100-
1:50 -1:5 - 500mm
P/2020/00671Received 02/07/2020
