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36
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Ex.107.35
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Ex.106.84
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Ex.107.67
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Ex.107.68
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Ex.107.99
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Ex.108.52
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Ex.108.38
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Ex.106.34
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Ex.105.37
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Ex.105.10
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Ex.101.00
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Ex.102.14
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Ex.100.20
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Ex.99.28
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Ex.98.45
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S2
CL 107.614
IL 106.189
S82
CL 103.382
IL 101.500
S70
CL 101.765
IL 100.249
S70
CL 101.707
IL 100.282(225Ø)
IL 100.207(300Ø)
S74
CL 99.570
IL 98.070(300Ø)
IL 97.920(450Ø)
S76
CL 99.872
IL 97.791
S78
CL 100.175
IL 97.689
S22
CL 100.834
IL 97.344(450Ø)
IL 97.194(600Ø)
S28
CL 99.767
IL 96.893
S30
CL 98.042
IL 96.242
S32
CL 96.990
IL 95.190
S88
CL 96.028
IL 94.512
S90
CL 95.610
IL 94.185
S92
CL 95.068
IL93.643(225Ø)
IL93.568(300Ø)
S36
CL 93.711
IL 91.911
S38
CL 92.570
IL 90.770
S40
CL 90.246
IL 88.446
S44
CL 88.639
IL 86.764
IL 87.439
HEADWALL S46
CL 87.250
IL 86.000
HEADWALL S48
CL 87.250
IL 85.750
S50
CONTROL CHAMBER
MAX Q = 10.7 l/s
CL 87.950
IL 85.700
HEADWALL S52
CL 84.800
IL 83.900
S4
CL 107.514
IL 106.003
S6
CL 107.713
IL104.756(225Ø)
IL104.681(300Ø)
IL104.606(375Ø)
S54
CL 106.599
IL 105.174
S60
CL 106.728
IL 105.300
S58
CL 107.571
IL 104.732
S8
CL 107.612
IL104.514
S14
CL 105.983
IL104.171(225Ø)
IL104.021(375Ø)
S64
CL 105.216
IL 103.000
S16
CL 105.443
IL102.876(300Ø)
IL102.801(375Ø)
IL102.726(450Ø)
S18
CL 105.150
IL102.582
SW BYPASS
S104
CL 86.800
IL 85.900
SW BYPASS
S102
CL 88.000
IL 86.700
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 BS7158 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.
2
7
Notes:
1) Larger sizes may be required for manholes on bends or where there are junctions.
2) May be reduced to 600 by 600 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
GENERAL NOTES
1. LEVELS INDICATED IN BLOCKS ARE FINISHED FLOOR LEVELS WHICH ARE GENERALLY
190MM ABOVE GROUND LEVEL.
2. ROADS FOOTPATHS AND PARKING BAYS WHICH FORM PART OF THE HIGHWAY TO BE
ADOPTED UNDER SECTION 38 OF THE HIGHWAYS ACT 1980 SHALL COMPLY WITH THE
RELEVANT COUNCIL HIGHWAY SPECIFICATION.
3. SEWERS TO BE ADOPTED UNDER SECTION 104 OF THE WATER INDUSTRIES ACT 1991
SHALL COMPLY WITH THE WATER AUTHORITIES ASSOCIATION "SEWERS FOR ADOPTION
6TH EDITION AND COMBINED ADDENDUM".
4. ALL PIPES TO BE USED IN ADOPTABLE SEWERS SHALL BE EITHER CLAYWARE TO BS EN
295-1:1991 AND BS 65:1991 (surface water pipes only), CONCRETE TO BS 5911-1:2002 OR
UNPLASTICISED PVC PIPES TO BS 4660/ BS EN1401-1:1998 WITH CLASS S BEDDING
UNLESS OTHERWISE STATED. THE MINIMUM REQUIREMENT FOR PIPES TO BE USED IN
ADOPTABLE SEWERS IS TO BE AS FOLLOWS:
4.1. 150MM DIA - CLASS 187 - MIN CRUSHING STRENGTH 28KN/M
225MM DIA - CLASS 120 - MIN CRUSHING STRENGTH 28KN/M
300MM DIA - CLASS 120 - MIN CRUSHING STRENGTH 36KN/M
4.2. LARGER THAN 300MM DIA - HIGH STRENGTH CONCRETE. WHERE COVER TO PIPES
IS LESS THAN 1200MM UNDER CARRIAGEWAY OR VEHICULAR ACCESS AREAS THEY
SHALL BE SURROUNDED WITH 150MM GRADE C20 CONCRETE, FLEXIBILITY OF
JOINTS BEING MAINTAINED BY USING COMPRESSIBLE FIBREBOARD AT INTERVALS
NOT EXCEEDING 5M.
5. ALL EXISTING DRAINAGE INVERT LEVELS, DIAMETERS AND LOCATIONS ARE TO BE
CHECKED BY THE CONTRACTOR PRIOR TO THE COMMENCEMENT OF ANY PROPOSED
DRAINAGE WORK. ANY DIFFERENCE BETWEEN ACTUAL AND DRAWN DETAILS IS TO
REPORTED IMMEDIATELY.
6. POSITIONS OF EXISTING SERVICES/STAUTORY UNDERTAKERS APPARATUS ADJACENT
TO OR CROSSING PROPOSED SEWERS IS TO BE CHECKED BY THE CONTRACTOR PRIOR
TO STARTING WORK.
GENERAL CONSTRUCTION NOTES -
1. HIGHWAY INSPECTOR TO BE PRESENT DURING INSPECTIONS / CBR TESTING
(AS PER STAFFORDSHIRE CC SPECIFICATION).
2. ALL TACTILE PAVING CROSSING POINTS ARE TO BE AGREED ONSITE WITH
HIGHWAYS CLERK OF WORKS, SHOULD THEY DIFFER FROM THE POSITIONS
SHOWN ON THE DETAILED DESIGN PLANS.
3. ALL EXISTING DRAINAGE INVERT LEVELS & POSITIONS TO BE CONFIRMED BY
CONTRACTOR PRIOR TO ANY WORKS BEING UNDERTAKEN ONSITE.
4. ALL LEVELS, HIGHWAYS & DRAINAGE DETAILS SUBJECT TO CHANGE UNTIL
RECEIPT OF TECHNICAL APPROVAL VIA RELEVANT APPROVING AUTHORITIES.
5. BUILDING DRAINAGE SHALL COMPLY WITH BS8301 1985 & THE BUILDING
REGULATIONS 1985 PART H.
6. ALL BUILDING DRAINAGE SHALL BE 100MM DIAMETER UNLESS SPECIFIED
OTHERWISE.
7. CONCRETE PROTECTION SHALL BE PROVIDED TO ALL UPVC PIPES WITH LESS
THAN 600MM COVER & TO CLAY PIPES WITH LESS THAN 300MM COVER WITHIN
NON ADOPTED AREAS.
8. WHERE A PIPE PASSES THROUGH A WALL AN OPENING IS TO BE FORMED
THROUGH THE WALL TO GIVE AT LEAST 50MM CLEARANCE AROUND THE PIPE.
BRICKWORK OVER SHALL BE SUPPORTED BY A LINTEL. A ROCKER PIPE OF
MAXIMUM 600MM LENGTH SHALL BE USED TO CONTINUE THE PIPEWORK.
9. WHERE A PIPE TRENCH IS WITHIN 1M OF A BUILDING IT IS TO BE FILLED WITH
CONCRETE UP TO A LEVEL BELOW THE BUILDING EQUAL TO THE DISTANCE
FROM THE BUILDING LESS 150MM.
10. WHERE THE FORMATION OF A PIPE TRENCH IS ABOVE ORIGINAL GROUND
LEVEL, LEVELS ARE TO BE MADE UP WITH WELL COMPACTED DTP TYPE 2
MATERIAL OR BETTER.
11. WHERE A DRIVEWAY FALLS TOWARDS A DWELLING IT SHALL BE PROVIDE WITH
A SUITABLE GULLY OR DRAINAGE CHANNEL TO PREVENT WATER DAMAGING
THE BUILDING.
12. ALL RETAINING WALLS ABOVE 600MM TO HAVE SUITABLE FALL PROTECTION
MEASURES AT THE HIGHER LEVEL.
13. ALL ADOPTABLE PIPEWORK FOR HIGHWAY DRAINS TO BE MINIMUM CLASS M
TO BS5911 OR CLASS 120 CLAY OR 28 KN/M CRUSHING STRENGTH IF 150MM
DIAMETER TO BS EN 295-1 AND LAID ON CLASS S GRANULAR BED UNLESS
SHOWN OTHERWISE.
14. MANHOLES COVERS AND GULLEY GRATES TO BE ADOPTED SHALL BE KITE
MARKED AND TO BS EN124, CLASS D400.
15. ALL CONNECTIONS TO SEWERAGE UNDERNEATH HIGHWAYS MUST BE MADE
VIA FACTORY MADE JUNCTIONS.
16. ALL DRAINAGE UNDER PROPOSED ADOPTABLE ROADS MUST BE BACKFILLED
WITH AN APPROVED GRADED GRANULAR MATERIAL.
17. ALL DRAINAGE MATERIALS MARKED WITH (*) TO BE AGREED WITH THE SEVERN
TRENT WATER CLERK OF WORKS PRIOR TO ANY CHANGES TO THE MATERIAL
PALETTE SPECIFIED.
18. 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 MATERIAL.
19. A SCREEN 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 6TH EDITION. THE SCREEN
SHALL ONLY BE REMOVED ONCE ON-SITE CONSTRUCTION WORKS HAVE BEEN
COMPLETED.
20. CONTRACTOR SHALL, PRIOR TO STARTING ANY WORKS, CONTACT THE
RELEVANT STATUTORY UNDERTAKERS AND HAVE THE LOCATION OF EXISTING
SERVICE APPARATUS MARKED OUT ON SITE. UNRECORDED PRIVATE AND
STATUTORY UNDERTAKERS APPARATUS MAY ALSO EXIST WITHIN THE SITE
AND THE CONTRACTOR SHALL EXERCISE DUE CAUTION WHEN CARRYING OUT
ANY EXCAVATION. IF SERVICES ARE DISCOVERED ON SITE THE ENGINEER IS
TO BE CONTACTED IMMEDIATELY.
FLOOD ROUTING PLAN
TH
AJM
DEC ' 15
1:500 @ A0
RACE/LCH/BRU
ENG_111
BRAMSHALL ROAD, UTTOXETER
LIONCOURT HOMES
The Contractor is to check and verify all building and site
dimensions, levels and sewer invert levels at connection
points before work starts. The Contractor is to comply in all
respects with current Building Legislation, British Standard
Specifications , Building Regulations, Construction (Design &
Management) Regulations, Party Wall Act, etc. whether or
not specifically stated on this drawing. This drawing must
be read with and checked against any structural,
geotechnical or other specialist documentation provided.
This drawing is not intended to show details of foundations,
ground conditions or ground contaminants. Each area of
ground relied upon to support any structure depicted
(including drainage) must be investigated by the Contractor.
A suitable method of foundation should be provided allowing
for existing ground conditions. Any suspect or fluid ground,
contaminates on or within the ground, should be further
investigated by a suitable expert. Any earthwork
constructions shown indicate typical slopes for guidance
only & should be further investigated by a suitable expert.
Where existing trees / structures are to be retained they
should be subject to a full specialist inspection for safety. All
trees are to be planted so as to ensure they are a minimum
of 5 metres from buildings. A suitable method of foundation
is to be provided to accommodate the proposed tree
planting.
Residential & Commercial Engineering Limited do not accept
any responsibility for any losses (financial or otherwise) to
any Client or third party arising out of the Clients (be it
Developer or Contractor but not limited thereto) non-
compliance with afore mentioned provisos.
c This drawing is the property of Residential & Commercial
Engineering Limited and may not be copied or used for any
purpose other than that for which it is supplied without the
express written authority of Residential & Commercial
Engineering Limited.
Revisions:
Project:
Title:
Client:
Drawn by:
Checked by:
Date:
Scale:
Job Number.
Drawing No.
Revision.#
PRELIMINARY, FOR INITIAL REVIEW
PURPOSES ONLY
Drawing Status:
Contact us :
Residential & Commercial Engineering Ltd,
Unit 17, Lakeside Business Park, Walkmill
Lane, Cannock,
WS11 0XE.
Tel : 01922 411552
Rev Description Date Drawn Check
Notes:
Key:
The drainage system is designed not to
flood any existing or new properties against
required criteria. This plan provides an
overland flood routing path to indicate that
should a flood event occur, the surface
water would be either directed back into
the scheme wide drainage system (via
gullies within the road system) or run off
site following the natural topography
Site Boundary
Flood Routing Arrow
P/2
016/
0026
0R
ecei
ved
19/0
2/20
16
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