NOTES:

1 : 25

JAN 1991 C2401F

A 1.96 Original SignedMINOR AMENDMENT.

CUT-OFF DRAIN DETAILS

B

GERENAL REVISION. 12.2002 Original Signed

C NAME OF DEPARTMENT AMENDED. 01.2005Original Signed

SCALE DRAWING NO.

DATE

REF. REVISION SIGNATURE DATE

D 02.2008����

MINOR AMENDMENT & NOTE 4 ADDED. Original Signed

E DIMENSIONS FOR HAUNCHING ADDED. 08.2009

CIVIL ENGINEERING AND

DEVELOPMENT DEPARTMENT

Original Signed

1. ALL DIMENSIONS ARE IN MILLIMETRES.

2. GRANULAR FILTER SHALL BE DESIGNED BY

THE CONTRACTOR IN ACCORDANCE WITH

GEO PUBLICATION NO. 1 / 93.

3. POLYETHYLENE PIPES AND FITTINGS SHALL

COMPLY WITH ASTM F405-13 AND F667-12,

HEAVY DUTY.

4. FOR SPECIFICATIONS OF GEOTEXTILE FILTER,

SEE GS CLAUSE 7.198(7).

F 03.2015MINOR AMENDMENT. Original Signed

TYPICAL SECTION OF CUT-OFF DRAIN

SLOPE SURFACE

300 MIN.

LAP

COMPACTED FILL

DIRECTION OF

SUBSURFACE FLOW

CONCRETE BEDDING

GRADE 20 / 20

INVERT LEVEL

TO BE SPECIFIED

150 3

00

600 600

1 200

50

0 M

IN.

COARSE GRANULAR FILTER

DE

PT

H T

O B

E S

PE

CIF

IED

225 INTERNAL DIAMETER

PERFORATED POLYETHYLENE PIPE

WITH NON-PERFORATED INVERT

GEOTEXTILE FILTER

MIN. 0.125 THICK

POLYETHYLENE SHEETING

WITH 300 LAPS

TYPICAL SECTION OF DRAIN FROM MANHOLE

SLOPE SURFACE

COMPACTED FILL

VA

RIE

S

POLYETHYLENE PIPE

DIAMETER TO BE 225

OR AS SPECIFIED

100

150 150

CONCRETE HAUNCHING

GRADE 20 / 20

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