1.0

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1.0

Ø

1.0

Ø

1.0

Ø

3.0

Ø

42.0

42.0

42.0

41.2

41.241.2

42.2

41.0

42.0

42.0

41.8

41.8

41.4

41.4

41.4

41.4

41.6

41.6

41.6

42.2

42.2

42.2

42.0

4.54

41.34

41.35

41.3641.46

41.69

41.7641.8741.96

42.01

0.64

4.54

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41.7841.8241.87

41.94

41.9241.9341.9542.0142.10

41.26

41.9141.95

42.02

42.00

41.9141.90

42.0742.03

41.98

41.80

41.83

41.8641.9241.9742.06

41.93

41.9541.9942.06

42.07 41.9342.11

41.95

42.00

41.94

41.9141.88

41.83

41.9642.07

42.0042.00

41.9441.95

42.08

05.1

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61.1

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45.1

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73.1

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27.1

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449

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24.1

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26.1

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66.1

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04.1

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31.2

441

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42.2842.35 42.16

42.10

42.22

42.32

42.15

41.95

42.17

42.26

41.92

41.90

41.88

41.84

41.62

41.52

41.43

41.31

41.47

41.3741.3841.30

41.31 41.2941.29

40.96

42.0242.04

42.10

41.8942.05

LCT

LCT

hsuB

hcna

rb

wol /

enil

pir

D

RWP

RWP

)elo

hna

m( 2C

I Sot

etal

p ec

ifir o

Ø

mm0

5s/l

6.4

ot s

wolf

tci r

tser

2CI F

0185

WT

S.xE

1085

WT

S.xE

100Ø @ 1:80

100Ø @ 1:80

100Ø @ 1:80

100Ø @ 1:50

1CIF

SIC1

3CI S

reb

mahc

noit

acra

meD

FIC3r e

bma

hc n

oi tac

rame

D

100Ø @ 1:6100Ø @ 1:4

Proposed Surface Water Drainage

Proposed Foul Drainage

Exis�ng Surface Water Drainage

Exis�ng Foul Drainage

Proposed Inspec�on Chamber

Proposed Manhole

Exis�ng Manhole

Rainwater Pipe

RWP

Key

Mass concrete

founda�onD

DD-150

When D is 1000 or m

ore, concrete fill tow

ithin D-150 of level of founda�onbo�

om

When D is less than 1000, concrete

fill to level of founda�on bo�om

Mass concrete

founda�on

Selected backfill material

Granular bedding m

aterial

Surface reinstatement as per soft or

hard landscaping specification

150m

in

150

Concrete bedand surround

Varies - refer tom

anhole schedule

150m

in

150

Type A granular bedand surround

Varies - refer tom

anhole schedule

Concrete bedding m

aterial

Class S granular bed and surround -pipe cover depth >900m

mClass Z concrete bed and surround -

pipe cover depth >900mm

Plas�c chamber and rings shall com

ply with Clause E2.31.

Min. 150m

m th'k GEN

3 insituconcrete surround com

plyingw

ith E4.1 and BRE SpecialDigest 1 in accordance w

ithm

anufacturer's instruc�on.

Temporarily cap sha� during

construc�on.

Precast concrete slab or insitu concreteslab to support cover and fram

e.M

inimum

50mm

gap between slab and

chamber unit.

Mortar bedding and haunching to

cover and frame to Clause E6.7.

Class B engineering brickwork or

precast concrete cover frame

sea�ng rings.

Flexible seal (seal needs to bew

ater�ght).

Cover complying w

ith Clause E2.32.If distance from

cover level to soffit

of pipe is >1m, access opening shall

be restricted to 350mm

diameter or

300x300mm

.

450mm

Joints between base and sha�

between sha� com

ponents tobe fi�

ed with w

ater�ght seals.

Base unit to have all connec�ons with

soffit levels set no low

er than that ofthe m

ain pipe.Invert of connec�ng pipe at least50m

m above that of the m

ain pipe.

Min. 150m

m concrete bedding.

Rocker pipe to Clause E6.6.2.Joint to be as close as possibleto face of cham

ber to permit

sa�sfactory joint andsubsequent m

ovement.

10

Compressible filler

Indica�ve concretefounda�on

New

drain sleeved throughfounda�on w

rapped with 50

compressible m

aterial and taped andboxed out in plyw

ood.

RWP adapter

Rainwater pipe

Refer to external works for

construc�on thicknesses

Rainwater pipe

For alterna�ve rodding gullyarrangem

ent see detail

Type 2 cover frame sea�ng rings

with 600x600 central access hole.

Type 1 cover frame sea�ng ring

with 600x600 eccentric access hole

(BS EN 752-3) bedded on m

ortar.

600

Duc�le iron cover and frame

to BS EN 124 D400, bedded on

class M1, M

2 or epoxy mortar.

600 max.

Cover slab with 750x600 access

(BS EN 752-3) bedded on m

ortar.10m

m uncom

pressed thicknessof approved sealant to allhorizontal joints.

100 min.

75

150mm

thick grade GEN3

sulphate resis�ngconcrete surround.Precast concrete cham

bersec�ons.Li�ing eyes to be pointed.Precast concrete cham

bersec�ons set 75m

m into

base slab.

225 min.

Invert with cham

ber to beform

ed using channel pipe.

Class M1, M

2, or epoxy mortar

haunching to mh cover and fram

e.

Grano concrete benching(m

in 20mm

thick) to be broughtup to a dense sm

ooth face neatlyshaped and finished toall branch connec�ons.Benching slope to be betw

een1 in 10 and 1 in 30.

Grade GEN3 concrete

(sulphate resistant).

diameter as

specified

Playing Field PavilionEast M

arkham

East Markham

Parish Council

As Shown

Construc�on1083-001 B

Proposed Drainage

RevisionDetails

Date

Project

Client

Title

Date

Num

ber

Scale

Status

269 Lincoln RoadN

orth Hykeham, Lincoln, LN

6 8NH

Tel : 07753 168226W

eb: ww

w.nc29.co.uk

Email : info@

nc29.co.uk

Drawn

Checked

January 2021

CCCC

AAddi�on of dem

arca�on chambers

19/02/2021

Copyright © 2021 N

C29 Ltd

N

Proposed Drainage LayoutScale 1:100

Surface Water M

anhole ScheduleFoul W

ater Manhole Schedule

Notes

1.Do note scale this draw

ing.2.

This drawing is to be read in conjunc�on w

ith all other project drawings

and specifica�ons.3.

All dimensions are in m

illimetres unless stated otherw

ise.4.

Should there be any conflict between the details indicated on this

drawing and those indicated on other draw

ings the Project Engineer shallbe inform

ed prior to construc�on.5.

Un�l technical approval has been obtained from

the relevant authority, itshould be understood that all draw

ings issued are preliminary and not for

construc�on. Should the contractor comm

ence site work prior to such

approval being given, it is en�rely at their own risk.

6.All 100Ø

proposed drainage pipes shown are to be laid at a m

inimum

gradient of 1:80.7.

All 150Ø proposed drainage pipes show

n are to be laid at a minim

umgradient of 1:150.

8.All exis�ng land drains encountered on site during construc�on are to bere-connected.

9.Tem

porary protec�on to be provided to drainage work during

construc�on as necessary.10.

Topographical survey and architectural layout based on third partyinform

a�on.11.

An�cipated foul flow rates calculated using discharge unit m

ethod to BSEN

12056-2.12.

Drawing to be read in conjunc�on w

ith Causeway Flow

design pack.13.

Pipes to be structured walled to BS EN

13476, Polypropylene to BE EN1852 or PVC-U

to BS EN 1401.

14.Both clay and concrete pipes shall be strength class 120 (100/150m

m m

incrushing strength 28kN

/m). Therm

oplas�c pipes shall have a minim

umring s�ffness of SN

415.

Pipes which run adjacent to buildings shall be installed in strict

accordance with Building Regula�ons Part H, clauses 2.23 to 2.25

16.Class Z concrete bed and surround to all foul and surface w

ater pipesw

ith less than 900mm

cover depth. Type S granular bed and surround toall foul and surface w

ater pipes with greater than 900m

m cover depth.

17.All m

anholes and inspec�on chambers subject to vehicular traffi

cking tohave D400 load-rated covers and fram

es to BS EN 124. All m

anholes andinspec�on cham

bers not subject vehicular trafficking to have B125

load-rated covers and frames to BS EN

124.18.

Concrete to be GEN1 unless specified otherw

ise.19.

The first flexible joint in pipes adjoining a manhole shall be a m

aximum

length of 600mm

from the inside face of the m

anhole, connec�ng to arocker pipe. The length of the rocker pipe shall be 600m

m.

20.All foul and surface w

ater pipes to be constructed to Building Regula�onsPart H.

CDM Requirem

entsRisk - Deep excava�onControl m

ethod - Contractor to design trench support to depths shown in the

manhole schedule, appropriate to the ground condi�ons.

Risk - Water ingress into excava�ons, including ground w

aterControl m

ethod - Contractor to specify method of dealing w

ith ingress ofw

ater into excava�ons, in par�cular if ground water is experienced.

Contractor to undertake trench inspec�ons prior to entry into any excava�on,and again if le� overnight or if condi�ons change.Risk - U

nderground servicesControl m

ethod - Contractor to trace underground u�li�es using CAT, Gennyand trial holes.

Typical Pipe Bedding DetailsScale 1:50

Typical Rainwater Pipe Detail

Scale 1:20

Typical Inspection Chamber Detail

Type D - Design and Construction Guidance 2020

Maxim

um Depth 2m

Scale 1:20

Typical Flexible Joint to ConcreteBed and Surround Detail

Scale 1:20

Drain Sleeved Through Foundation DetailScale 1:20

Pipe Protection Near Foundation Detail

Scale 1:20

Typical Manhole Detail

Scale 1:50

BConstruc�on issue

10/03/2021

This section only as part of m

ain building contract, connecting to existing inspection cham

bers by others.

Field Practice Markup

21/03/21 JW