MA

X. 9

99

mm

SE

E N

OT

E 9.

DUCTILE IRON MANHOLE COVER DETAIL

N.T.S.

-

TYPICAL MANHOLE RAMP DETAIL

N.T.S.

-

22

5 M

IN

.

TOE HOLES

225

150 150

100

75

175

700

10

0

FLOW DIRECTION

SECTION

BLINDING CONCRETE

GRADE C12/15

75

DE

PT

H T

O B

E

DE

TE

RM

IN

ED

B

Y C

ON

TR

AC

TO

R

AN

D A

PP

RO

VE

D B

Y

EM

PL

OY

ER

S

RE

PR

ES

EN

TA

TIV

E

LEAN MIX CONCRETE

INFILL GRADE C12/15

STOPPER

225 M

IN

.

SECTION

BLINDING CONCRETE

GRADE C12/15

75

DE

PT

H T

O B

E

DE

TE

RM

IN

ED

B

Y C

ON

TR

AC

TO

R

AN

D A

PP

RO

VE

D B

Y

EM

PL

OY

ER

S

RE

PR

ES

EN

TA

TIV

E

LEAN MIX CONCRETE

INFILL GRADE C12/15

TYPICAL BACKDROP MANHOLE DETAIL

N.T.S.

-

WITH 90° EQUAL BRANCH

MASS CONCRETE BASE

SURROUND GRADE C30/37

MAKE UP PIECES

AS REQUIRED

TOE HOLES

NOT LESS THAN 225

BUT MAY VARY DUE

TO SITE CONDITIONS

NOT LESS THAN 225

BUT MAY VARY DUE

TO SITE CONDITIONS

HEAVY DUTY CAST IRON COVER AND FRAME

D400 (TO SUIT 150mm OPE.). LID SET AS PER

MANUFACTURER'S SPECIFICATION

MANHOLE CONSTRUCTION AS PER TYPE 1 or 2

150 150

100

75

175

150mm DIA. PVC PIPE

FOR RODDING ACCESS

WITH 150mm MIN.

CONCRETE SURROUND

GRADE C25/30

EN124

D400

DATE REF

PROD REF

LICENCE

EN124 D400 CFL

NO KM27763

NAME LTD.

675 CLEAR OPE

150

832

832

M

I

N

.

Ø

6

7

5

20

CONCRETE GRADE C25/30 SURROUND

(100mm PATH / FIELD, 150mm ROAD)

MINIMUM 20mm BEDDING ON

ENGINEERING BRICK COURSE

REINSTATEMENT APPROPRIATE TO

MANHOLE LOCATION

MINIMUM 20mm REINSTATEMENT.

20

SECTION

PLAN

1000

'X'

150

1000

'X'

150

1000

'X'

150

STANDARD TEE JUNCTION

STANDARD SHORT

RADIUS 90° BEND

MIN

.1

00

0

MASS CONCRETE BASE

GRADE C30/37

D

H

MIN

. 50, M

AX

. 300

UPSTAND OF CLASS "B" ENGINEERING BRICKS

( 2 COURSE MIN. / 4 COURSE MAX.) TO I.S. EN 771-1

AS

R

EQ

UIR

ED

U

SIN

G A

C

OM

BIN

AT

IO

N O

F R

IN

GS

VA

RY

IN

G IN

H

EIG

HT

T

O A

CH

IE

VE

T

HE

S

PE

CIF

IE

D

MIN

IM

UM

A

ND

M

AX

IM

UM

U

PS

TA

ND

D

EP

TH

S

BLINDING CONCRETE

GRADE C12/15

225

MIN

.

500 MIN.

CONCRETE GRADE C25/30 SURROUND (100mm PATH / FIELD, 150mm ROAD) TO

APPROVED D400 NON-ROCK D.I. COVER AND FRAME (675 x 675 or Ø650 NOMINAL OPENING)

1000

OUTLINE OF MANHOLE

COVER SHOWING

SQUARE OPENING

150 MIN. PIPE CONCRETE SURROUND

GRADE C16/20

675 CLEAR OPE

PRECAST CONCRETE MANHOLE RINGS TO

I.S. 420 IN CONJUNCTION WITH I.S. EN 1917:2004

CONCRETE SURROUND 150mm THICK (MIN.)

GRADE C16/20

75

STUB PIPE / PLAIN ENDED PIPE

ROCKER PIPE CUT TO SUIT

'X

'

STRUCTURE - SCHEDULE OF DIMS

375-675

UP TO 350

PIPE ØHD

1500

1200

MANHOLE TYPE 1 (DEPTHS TO 2.5m)

NOT TO SCALE

-

-

CONCRETE SURROUND 150mm THICK (MIN.)

GRADE C30/37

MANHOLE TYPE 2 (DEPTHS 2.5m to 6m)

NOT TO SCALE

-

-

SECTION

PLAN

UP

ST

AN

D D

EP

TH

MIN

. 250 (P

AT

H / F

IE

LD

)

MIN

. 300 (R

OA

D)

SLO

PE

1:3

0

DE

PT

H T

O B

E

DE

TE

RM

IN

ED

B

Y C

ON

TR

AC

TO

R

AN

D A

PP

RO

VE

D B

Y

EM

PLO

YE

RS

RE

PR

ES

EN

TA

TIV

E

LEAN MIX CONCRETE

INFILL GRADE C12/15

700-900 1800

150

MIN

.1

00

0

MASS CONCRETE BASE

GRADE C30/37

PIPE CUT TO HALF CHANNEL AND / OR

50mm THICK GRANOLITHIC

CONCRETE TROWELED SMOOTH

H

PRECAST REINFORCED COVER SLAB

WITH 675 x 675 SQUARE OPENING

AS

R

EQ

UIR

ED

U

SIN

G A

C

OM

BIN

AT

IO

N O

F R

IN

GS

VA

RY

IN

G IN

H

EIG

HT

T

O A

CH

IE

VE

T

HE

S

PE

CIF

IE

D

MIN

IM

UM

A

ND

M

AX

IM

UM

U

PS

TA

ND

D

EP

TH

S

BLINDING CONCRETE

GRADE C12/15

300

MIN

.

OUTLINE OF MANHOLE

COVER SHOWING

SQUARE OPENING

150 MIN. PIPE CONCRETE SURROUND

GRADE C16/20

CONCRETE SURROUND 150mm THICK (MIN.)

GRADE C16/20

75

375-675

UP TO 350

PIPE ØHD

LARGER Ø + 350

1800

1800

CONCRETE SURROUND 150mm THICK (MIN.)

GRADE C30/37

LARGER Ø + 375

SECTION

PLAN

DE

PT

H T

O B

E

DE

TE

RM

IN

ED

B

Y C

ON

TR

AC

TO

R

AN

D A

PP

RO

VE

D B

Y

EM

PLO

YE

RS

RE

PR

ES

EN

TA

TIV

E

700-900 1800 LARGER Ø + 400

PRECAST REINFORCED

COVER SLAB TO COMPLY

WITH BS5911

10

00

mm

M

IN

.

S

LO

P

E

1:30

STAINLESS STEEL CHAIN (Ø > or = 450)

LEAN MIX CONCRETE

INFILL GRADE C12/15

NOT LESS THAN 225

BUT MAY VARY DUE

TO SITE CONDITIONS

NOT LESS THAN 300

BUT MAY VARY DUE

TO SITE CONDITIONS

MIN

. 50, M

AX

. 300

STAINLESS STEEL CHAIN (Ø > or = 450)

UPSTAND OF CLASS "B" ENGINEERING BRICKS

( 2 COURSE MIN. / 4 COURSE MAX.) TO I.S. EN 771-1

CONCRETE GRADE C25/30 SURROUND (100mm PATH / FIELD, 150mm ROAD) TO

APPROVED D400 NON-ROCK D.I. COVER AND FRAME (675 x 675 or Ø650 NOMINAL OPENING)

PRECAST CONCRETE MANHOLE RINGS TO

I.S. 420 IN CONJUNCTION WITH I.S. EN 1917:2004

ELASTOMETRIC JOINT SEAL TO EN 681

ELASTOMETRIC JOINT SEAL TO EN 681

PIPE CUT TO HALF CHANNEL AND / OR

50mm THICK GRANOLITHIC

CONCRETE TROWELED SMOOTH

STAINLESS STEEL CHAIN IN 'DOWN' POSITION

SECURED TO RESTRAINING HOOK,

WHEN CHAMBER IS OCCUPIED WHERE

PIPE DIA. IS 450mm OR MORE

230 x 150 x 100 DEEP TOE HOLES TO BE

PROVIDED WITH PIPES GREATER THAN Ø450,

ON PIPES > Ø600 TOE HOLES TO BE

STAGGERED AT 300 CENTRES

230 x 150 x 100 DEEP TOE HOLES TO BE

PROVIDED WITH PIPES GREATER THAN Ø450,

ON PIPES > Ø600 TOE HOLES TO BE

STAGGERED AT 300 CENTRES

CONSTRUCTION JOINT

CONSTRUCTION JOINT

UP

ST

AN

D D

EP

TH

MIN

. 250 (P

AT

H / F

IE

LD

)

MIN

. 300 (R

OA

D)

STRUCTURE - SCHEDULE OF DIMS

ROCKER PIPE - SCHEDULE OF DIMS

675-750

150 TO 600

PIPE ØROCKER PIPE LENGTH , 'X' (mm)

1000

600

OVER 750 1250

1000

'X

'

150

1000

'X

'

150

ROCKER PIPE - SCHEDULE OF DIMS

675-750

150 TO 600

PIPE ØROCKER PIPE LENGTH , 'X' (mm)

1000

600

OVER 750 1250

1000

150

SEWER PIPE

INTEGRAL SOCKET

INTEGRAL SOCKET

STUB PIPE / PLAIN ENDED PIPE

ROCKER PIPE CUT TO SUIT

INTEGRAL SOCKET

SEWER PIPE

INTEGRAL SOCKET

STUB PIPE / PLAIN ENDED PIPE

ROCKER PIPE CUT TO SUIT

INTEGRAL SOCKET

SEWER PIPE

INTEGRAL SOCKET

STUB PIPE / PLAIN ENDED PIPE

ROCKER PIPE CUT TO SUIT

SEWER PIPE

INTEGRAL SOCKET

INTEGRAL SOCKET

GRAVITY SEWERS RUNNING PARALLEL / ADJACENT TO EACH OTHER @ MANHOLES DETAIL

NOT TO SCALE

-

-

1200 M

inim

um

350 M

in.

MANHOLE

FOUL / STORM SEWER PIPE

FOUL / STORM SEWER PIPE

MASS CONCRETE BASE

SURROUND GRADE C30/37

BENCHING CONCRETE GRADE C25/30

WITH A 1:3 SAND & CEMENT FINISH

> 900 2100 > 900 2100LARGER Ø + 450

LARGER Ø + 350

LARGER Ø + 375

LARGER Ø + 400

LARGER Ø + 450

BENCHING CONCRETE GRADE C25/30

WITH A 1:3 SAND & CEMENT FINISH

BENCHING CONCRETE GRADE C25/30

WITH A 1:3 SAND & CEMENT FINISH

675 CLEAR OPE

900

67

5m

m M

AX

.

500 MIN.

D

FIXED CORROSION RESISTANT LADDER

TO COMPLY WITH BS EN 14936

PRECAST REINFORCED

COVER SLAB TO COMPLY

WITH BS5911

LADDER

STEP IRONS

67

5m

m M

AX

.

300 M

ax.

STEP IRONS TO COMPLY WITH BS EN 13101.

TYPE D, CLASS 1 GALVANISED MILD STEEL

& PLASTIC ENCAPSULATED

COPYRIGHT RESERVED - THIS DRAWING IS NOT TO BE USED FOR A

PURPOSE OTHER THAN THAT FOR WHICH IT HAS BEEN ISSUED BY

NICHOLAS O'DWYER LTD. NOR IS IT TO BE COPIED OR REPRODUCED

IN ANY MANNER WITHOUT WRITTEN CONSENT.

DESCRIPTIONDATE CDREV A

NOTES

DRAWN

DRAWING No.

SCALES

DATE

TITLE

DATE

CHECKED

REVISION

DATE

APPROVED

PROJECT

CLIENT

Unit E4, Nutgrove Office Park,

Nutgrove Avenue, Dublin 14

T

F

E

W

PROJECT No. STATUS PURPOSE OF USE

+353 1 296 9000

+353 1 296 9001

dublin@nodwyer.com

www.nodwyer.com

RIVER PODDLE

FLOOD ALLEVIATION SCHEME

SAINT THERESA'S GARDENS

SEALED MANHOLES

TYPICAL DETAILS

M. Cheevers

07.11.19

B. Twomey

07.11.19

B. Dunphy

07.11.19

N.T.S.

RPFS-NOD-01-XX-DR-C-08252 P01

20662 S0 WORK IN PROGRESS

1.) ALL DIMENSIONS IN MILLIMETRES UNLESS STATED OTHERWISE.

2.) PRECAST CHAMBER RINGS WILL BE CONCRETE GRADE C35/45 IN SALINE /

7.) FOR 450mm DIA. EXIT PIPES AND OVER, A SAFETY CHAIN IS TO BE PROVIDED.

6.) PROVIDE RECESSED TOE HOLES IN CHANNELS OVER 450mm IN DEPTH.

5.) BRANCH BENDS TO BE CURVED IN THE DIRECTION OF FLOW.

4.) ENTRY AND EXIT PIPES TO BE BUILT IN MONOLITHICALLY WITH THE MANHOLE AND THE

3.) FOR BEDDING AND SEALING OF CHAMBER RINGS - THE TOP RING (TO P.C. COVER

SLAB) AND BOTTOM RING TO BE BEDDED WITH CEMENT MORTAR. FOR

INTERMEDIATE RINGS, JOINTS TO BE SEALED WITH EITHER APPROVED PREFORMED

JOINTING STRIP OR BY LIBERALLY COATING THE FACES OF THE JOINTS WITH

APPROVED BITUMINOUS MATERIAL PRIOR TO BEING POSITIONED :

SURPLUS MATERIAL TO BE NEATLY STRUCK OFF.

MANHOLE MADE WATERTIGHT.

TIDAL GROUND CONDITIONS ( p < 20 ohm.m )

8.) CONTRACTOR TO DETERMINE AGGREGATE SIZE ON SITE.

9.) USE BACKDROP MANHOLE IF DROP IF GREATER THAN 999mm

10.) MANHOLE COVER AND FRAME TO BE SET AS PER MANUFACTURER'S SPECIFICATION.

11.) PRECAST REINFORCED COVER SLAB CLEAR OPENING SHALL MATCH CLEAR

OPENING OF COVER (MINIMUM 675mm x 675mm OR Ø 675mm)

12.) SEALABLE MANHOLES SHALL BE Ø800mm WITH 750mm SQUARE OPES.

13.) WHERE SQUARE MANHOLES ARE TO BE USED D IS TAKEN AS INTERNAL WIDTH

P01 FEB 2020 M.C.ISSUED FOR PLANNING B.T. B.D.