johannesburg roads agency soc limited (jra) · • section 2.4: retaining walls/ sub soil drainage....

ROADS & STORMWATER MANUAL

VOLUME 2 STANDARD DESIGN DETAILS FOR

ROADS & STORMWATER

PART 1 – ROADS JUNE 2015

Johannesburg Roads Agency SOC Limited (JRA)

PART 2 – STORMWATER JUNE 2015

CONTENTS 2.1 INTRODUCTION

2.2 STORMWATER: DESIGN

See index in section.

2.3 STORMWATER: MAINTENANCE


2.4 STORMWATER: RETAINING WALLS/SUB SOIL DRAINAGE


DISCLAIMER The drawings in this document are intended as Standard Design Details. As such their principles should be adhered to.

However, designers are responsible for their own final designs undertaken on behalf of the Johannesburg Roads Agency SOC Limited, and as such they should amend or supplement the Standard Design Details according to specific design requirements

PART 2 – STORMWATER JUNE 2015

[PART 2: STORMWATER] June 30, 2015

Part 2 - page 1

2.1 INTRODUCTION

The Johannesburg Roads Agency’s “Roads & Stormwater Manual” comprises two volumes:

• Volume 1: Code of Procedure; • Volume 2: Standard Design Details for Roads & Stormwater:

Part 1: Roads; and Part 2: Stormwater.

The original source document for Stormwater Standard Details was “Review Document: April 2003”, which included handwritten annotations relevant to updating, made by Mr Graham Thompson. A later version of this document, dated November 2004, became available and this in turn had been annotated with comments dated October 2007. Many of the April 2004 comments had been acted upon in the later document which included:

• 4 drawings covering Subsurface Drainage (now included in Section 2.2: Stormwater Design); and

• 3 drawings covering Subsoil Drainage in the context of retaining walls (now comprising Section 2.4).

The Standard Design Details have been grouped into three sets, namely:

• Section 2.2: Stormwater Design covering broadly the following categories of detail: Network design; System components – kerb inlets, manholes, junctions etc.; Inlet and outlet structures; Stormwater pipe bedding; Subsurface drainage.

• Section 2.3: Stormwater Maintenance – including details pertaining to existing stormwater installations within the original Johannesburg municipal area and the Sandton area;

• Section 2.4: Retaining Walls/Sub Soil Drainage. The “Roads & Stormwater Manual” will be used within JRA and will be made available to developers and their consultant designers for application within the Greater Johannesburg Metropolitan area, in the interests of the closest possible conformity to roads and stormwater design standards. The numbering of drawings within sections has been carried out in open ended groups to permit additional drawings to be inserted in future in the most appropriate group. For example, in section 2.2 Stormwater: Design, if an additional manhole detail is required it can be inserted as JRA-SD-SW-053. The index sheet for section 2.2 will be amended accordingly with the drawing issue. The section index may run to extra pages if required.

June 30, 2015 [PART 2: STORMWATER]

Part 2.- page 2


DRAWING NUMBER DRAWING DESCRIPTION

REVISION NUMBER 0 1 2 3 4 5

REVISION DATE JRA-SD-SW-010 Typical Stormwater Network Layout: Localised 300615 JRA-SD-SW-011 Typical Stormwater Network Layout: Catchment Area 300615 JRA-SD-SW-012 Typical Stormwater Construction Details: Longitudinal Section and Data Table 300615 JRA-SD-SW-020 Kerb Inlets: Plans and Elevation 300615 JRA-SD-SW-021 Kerb Inlet Sections 300615 JRA-SD-SW-022 Kerb Inlet Slab Details 300615 JRA-SD-SW-023 Kerb Inlet: Kerb, Apron and Slab Front Support Details 300615 JRA-SD-SW-024 Kerb Inlet/Manhole Combination Details 300615 JRA-SD-SW-025 Kerb Inlet with Sand Trap Details 300615 JRA-SD-SW-050 Manhole Details 300615 JRA-SD-SW-051 Stepped Manhole Design Details 300615 JRA-SD-SW-052 Deep Manhole Details 300615 JRA-SD-SW-060 Standard Built-up Sections for Bends & Junctions: Details 1 of 3 300615 JRA-SD-SW-061 Standard Built-up Sections for Bends & Junctions: Details 2 of 3 300615 JRA-SD-SW-062 Standard Built-up Sections for Bends & Junctions: Details 3 of 3 300615 JRA-SD-SW-070 Field Inlet Details 300615 JRA-SD-SW-071 Grid Inlet 300615 JRA-SD-SW-080 Typical Brick Outlet Structure: Details 1 of 2 300615 JRA-SD-SW-081 Typical Brick Outlet Structure: Details 2 of 2 300615 JRA-SD-SW-082 Erosion Protection at Outlet Structures 300615 JRA-SD-SW-083 Kerb Outlets 300615 JRA-SD-SW-090 Bedding of Stormwater Pipes – with Tables 300615 JRA-SD-SW-091 Reinstatement of Road Layers (Asphalt Surface) 300615 JRA-SD-SW-100 Subsurface Drainage Types 300615 JRA-SD-SW-101 Subsurface Drainage Pipe Junctions 300615 JRA-SD-SW-102 Subsurface Drain Outlet Detail 300615 JRA-SD-SW-103 Subsurface Drain Manhole Detail 300615


2.2

ST

OR

MW

AT

ER

: DE

SIG

N

BC

BC

1.0m

BC

MAINSTORMWATERLINE

d2

STA

GG

ER

ED

CO

NFI

GU

RA

TIO

NLO

W P

OIN

T C

ON

FIG

UR

ATI

ON

TABLE A: POSITION OF STORMWATER LINE IN ROAD RESERVE

ROAD RESERVEWIDTH

(m)

CARRIAGE WAY

25,0

20,0

16

1310

"S" Is the distance between the road (tar edge) and the furthest wall of the pipe or culvert.

REFER TO THE FOLLOWING DRAWINGSFOR DETAIL ON:

STD003 1. CATCHPITS2. CATCHPIT TRANSITION

STD004 1. JUNCTION BOXES

STD0032. SEMI VERTICAL KERBS1. SLOPING KERBS

3. TRANSITION SECTIONS

INTE

RS

EC

TIO

N C

ON

FIG

UR

ATI

ON

RO

AD

RE

SE

RV

E V

AR

IAB

LE

CA

RR

IAG

EW

AY

VA

RIA

BLE

CARRIAGE WAY VARIABLE

ROAD RESERVE VARIABLE

MANHOLE

SLOPE

BC

VARIABLE 4-5m DEPENDINGON INTERSECTION DESIGN

KI/A

C

KI/A

C

VARIABLE 4-5mDEPENDING ONINTERSECTION DESIGN

BC

BC

SLOPE

"S" <

2,4

mS

EE

TA

BLE

A

SLOPESLOPE

BC

KI/A

C

KE

RB

INLE

T /

AC

CE

SS

CH

AM

BE

R

KI/L

P

KE

RB

INLE

T /

LOW

PO

INT

MANHOLE

MANHOLE

BCMANHOLE

KI/AC

KI/ACKERB INLET /ACCESS CHAMBER

KERB INLET /ACCESS CHAMBER

MANHOLEKERB INLET /LOW POINT

KERB INLET /LOW POINT

MANHOLE

MANHOLE

STAGGERED CONFIGURATION LOW POINT CONFIGURATIONINTERSECTION CONFIGURATION

MANHOLE

2m

d1

CL

60°MAX.

60°MAX.

60°MAX.

VA

RIE

SV

AR

IES

60°MAX.

S" > 2,4m (SEE TABLE A)2m

VA

RIE

S

TRANSITIONSECTION

2m

VARIES VARIES

VARIES VARIESVARIES

60°MAX.

VARIES

VARIES

1.0m VARIES VARIES

60°MAX.

VARIES

SLO

PE

VARIES VARIES

VA

RIE

S

1m 1mV

AR

IES

SLO

PE

SLO

PE

SLO

PE

2m

VA

RIE

SV

AR

IES

VA

RIE

S

SECTIONS

VARIES

TRANSITIONSECTION

OUTFALL

FLOW

KERBS &CHANNEL

TRANSITIONINLET CHANNEL 2 X PRECAST SLABS

KE

RB

S &

CH

AN

NE

L

ACCESS CHAMBER

600 X 600 MANHOLE COVER

VARIES 2000 2000 2000 1000

TRANSITION

APRON

FLOW FLOW

TRANSITION

VARIES 2000 2000 2000 2000 2000 VARIES

ACCESS CHAMBER

600 X 600 MANHOLE COVER

INLET CHANNEL 3 X PRECAST SLABS INLET CHANNELTRANSITION

LOW POINTAPRON

KE

RB

S &

CH

AN

NE

L

KERBS &CHANNEL

LEGEND

JOHANNESBURG ROADS AGENCY (PTY) LTDCITY OF JOHANNESBURG

Drawing Sub-setDRAWING NUMBER EXTN.

AMENDMENT NUMBER:

DRAWN BY:

DRAWING CHECKED BY:

DRAWING APPROVED BY:

DESIGNED BY:

STRUCTURAL DESIGN BY:

CHECKED BY:

AMENDMENTSNo. DATE APPROVED DESCRIPTION

NOTES

JRA-SDSW-010

SCALE AS SHOWN: NTS

DATE: 03/05/2015

STORMWATER : DESIGN

TYPICAL STORMWATER NETWORK LAYOUT:LOCAL AREA

1. FOR DETAILS OF ALL ELEMENTSOF A STORMWATER NETWORKREFER TO JRA-SD-SW-011.

2. DETAIL 010-1 SHOWS A TYPICALSTORMWATER NETWORK ON TWOAPPROACHES TO ANINTERSECTION.

3. NOTE THE INCREASE IN PIPE SIZEFROM d2 TO d1 IN THE BOTTOMLEFT CORNER OF THE DETAIL.

4. THE STORMWATER NETWORKCOMPRISES NODES (MANY TYPES)AND LINKS (PIPES OF DIFFERINGTYPES AND DIAMETERS).

5. COMBINATIONS OF DIFFERENTNODE TYPES MAY BE REQUIREDTHROUGHOUT A LARGE NETWORKE.G. GI/FO - GRID INLET/FIELDOUTLET.

DETAIL 010-2: KERB INLET / ACCESS CHAMBER (KI/AC)

DETAIL 010-3: KERB INLET / LOW POINT (KI/AC)

MH TYPE 1

MH TYPE 2

MH TYPE 3

ETC.

DETAIL 010-4MANHOLE TYPES

DETAIL 010-1TYPICAL NETWORKNODES & LINKS

KI MANHOLECOVER

MANHOLEMH

MANHOLETYPE 1,2,3, etc

MHT3

FallKERB INLET

KI

FallKERB INLET/ACCESS CHAMBER

Fall FallKERB INLET/LOW POINT

KI/LP

FIELD INLETFI

GRID INLETGI

ATTENUATIONPOND

AP

ST SAND TRAP

RODDING EYERE

ACKNOWLEDGMENT:THIS DRAWING IS BASEDON PRINCIPLES GIVENON CITY OF TSHWANEDRAWING STD002

1

12

12 3

FIELD OUTLETFO

KI/ACKI/AC KI/AC KI/AC

ROAD "A"

150140130

150 - KI/AC140 - KI/AC130 - MH Type1

GI - 72KI/AC

KI/AC

KI/AC

KI/AC KI/AC KI/AC

KI/AC

KI/AC

KI/AC

KI/AC

KI/AC

KI/LPKI/ACKI/ACKI/ACKI/ACKI/LP/STKI/ACKI/AC

KI/AC

KI/ACKI/LP/STKI/ACKI/AC

120

70

80

MH Type 1

FIELD INLET FI

MH Type 3 -120

MH -110MH -100MH -90

MH Type 2 -80

MH Type 2 -70

60

MH Type 3 -60

FOMH Type 3MH Type 1

50 40 30

50 - MH Type 240 - MH Type 230 - MH Type 2

MH Type 2

MH Type 3- 20

MH Type 2

FO - 10 10

20

DAM

STREAM

3.25%

1.8%

2.5%2.0%

ROAD "B"

CUL DE SAC "A"

WATERSHED

VALLEY

WATERSHED

VALLEY

RE RE

RE

ROAD "C"

RO

AD

NO

DE

NO

.

TYP

E

NO

. CO

VE

RS

LAB

S/ G

RID

SA

PR

ON

/ D

EP

TH

INV

ER

TLE

VE

L

AP

PR

OX

. CO

VE

RLE

VE

L +

DE

PTH

(m)

DIS

T. O

N ℄

(m)

OFF

SE

T L

or R

OF ℄

(m)

SIZ

E (m

mØ

)

LEN

GTH

(m)

GR

AD

E %

PIP

E C

LAS

S

BE

DD

ING

CLA

SS

I.L. A

T N

EX

TN

OD

ED

OW

NS

TRE

AM

RE

MA

RK

S

NODE DATA LINK DATA(OUTLET PIPE)

VE

LOC

ITY

RU

NO

FF

CA

PA

CIT

Y



AMENDMENT NUMBER:

DRAWN BY:

DRAWING CHECKED BY:


DESIGNED BY:


CHECKED BY:


NOTES

JRA-SDSW-011

SCALE AS SHOWN: NTS

DATE: 06/05/2015

STORMWATER : DESIGN

TYPICAL STORMWATER NETWORK LAYOUT:CATCHMENT AREA

LEGEND

1. DETAIL 011-1 ILLUSTRATES ASMALL URBAN STORMWATERCATCHMENT AREA.

2. A LONGITUDINAL STORMWATERSECTION IS GIVEN ONJRA-SD-SW-012 WHICHILLUSTRATES A NOTIONALSTORMWATER DESIGN FROMFIELD OUTLET NODE 10 TO THEHIGHEST KERB INLET NODEAT150.

3. DETAIL 011-2 TABULATESMINOR STORMWATER LINKDATA IN SUPPORT OF THE MAINLINE LONGITUDINAL SECTIONS.

4. IN GENERAL TERMS THEDESIGN SHOWN WOULDACCEPTABLY DEAL WITH A 1 IN5 YEAR FLOOD.THE INLET DESIGN TO MH20WOULD EXTEND THIS TO A 1 IN25 YEAR CAPABILITY.

DETAIL 011-1SMALL CATCHMENT AREA DETAIL 011-2 TYPICAL DATA TABLE

KI MANHOLECOVER

MANHOLEMH

MANHOLETYPE 1,2,3, etc

MHT3

FallKERB INLET

KI

FallKERB INLET/ACCESS CHAMBER

Fall FallKERB INLET/LOW POINT

KI/LP

FIELD INLETFI

GRID INLETGI

ATTENUATIONPOND

AP

ST SAND TRAP

RODDING EYERE

FIELD OUTLETFO

1623

150

KI/A

C

140

KI/A

C

130

MH

120

MH

80 MHTYPE - NODE NO

NO COVER SLABS / APRON CLASSDEEP OR SHALLOW

INVERT LEVEL

APPROX. COVER LEVEL& DEPTH (m)

DISTANCE ON ℄&OFFSET (m)

1624

1625

1626

1627

1628

1629

1630

1631

1632

1633

1634

70 MH

60 MH

50 MH

40 MH

30 MH

20 MH

10 FO

PIPE SIZE (mmØ)

LENGTH (m)

GRADE (%)

CLASS

BEDDING CLASS

RUNOFF L/S

CAPACITY L/S

29.5

5

28.7

7

27.7

8

27.4

0

26.1

526

.00

25.6

1

25.1

9

24.7

2

24.3

5

24.0

023

.85

23.5

822

.50

22.2

0

31.1

51.

60

30.3

51.

58

29.4

01.

62

28.8

01.

40

27.6

01.

45

27.2

51.

64

26.7

51.

56

26.3

51.

63

25.8

51.

50

25.3

51.

35

24.9

01.

32

23.3

0

285.

01.

5L

263.

01.

5L

235.

01.

5L

211.

05.

0L

133.

05.

0L

115.

05.

0L

96.0

5.0L

74.5

5.0L

57.5

5.0L

37.0

5.0L

20.0 0.0

450 450 450 525 525 525 525 525 600 2 X 675

22 28 24 18 19 21.5 17 20.5 17 20

3.54% 3.54% 1.60% 2.18% 2.18% 2.18% 2.18% 1.71% 1.59% 1.50%

B B B B B B B B B B

450 450

78

B B

NO

DE

DA

TAN

OD

E O

UTL

ET

PIP

E D

ATA

200.

0

147.

0

600Ø from KI/LP

RO

AD

"A"

APPROX. ℄ OF ROADS

℄ R

OA

D "B

"

℄ R

OA

D "B

"

G.L.

G.L.

G.L.

G.L.

G.L.

RO

AD

"C"

CUTLINE

G.L.

VELOCITY

LEGEND



AMENDMENT NUMBER:

DRAWN BY:

DRAWING CHECKED BY:


DESIGNED BY:


CHECKED BY:


NOTES

JRA-SDSW-012

SCALE AS SHOWN: NTS

DATE: 04/05/2015

STORMWATER : DESIGN

TYPICAL STORMWATER DETAILS FORCONSTRUCTION: LONGITUDINAL SECTION

1. THE LONGITUDINAL STORM-WATER SECTION SHOWNRELATES TO THE PLAN OF ASMALL CATCHMENT AREASHOWN ON JRA-SD-SW-011.

2. THE SECTION COVERS ONEOF THE MAIN STORMWATERLINES SHOWN ON THE PLANFROM THE OUTFALL 10 TOTHE HIGHEST KERB INLET150.

3. THE NODE DETAILS GIVENARE NOTIONALLY CORRECT BUT DO NOTNECESSARILY REPRESENTA "BEST WORKING DESIGN".THEY ARE GIVEN FOR ILLUSTRATIVE PURPOSESONLY.

4. DETAILS OF MINOR STORM -WATER LINKS AND CROSSINGS ARE GIVEN INDETAIL 011-2 ON JRA-SD-SW011.

5. KERB INLET AND MANHOLESPACING ARE SUBJECT TOENGINEERING DESIGN BASED ON A WIDE RANGEOF VARIABLES.REFER TO VOLUME 1, CODEOF PROCEDURE, CH.9 -STORMWATER MANAGEMENT.

PIPE

2000

JOINT

MIN

.108

51/

2 O

.D. +

735

FLOW

INLET CHANNEL

ROAD EDGE

200 1

80

CHANNELKERBS &

230

JOINT15

0

C

FLO

W23

090

0 M

IN.

JOINT

MIN 1200K.I. CHAMBER

230

230

230

JOINT

450

AP

RO

N21

060

0

25

KERB INLET LENGTH

JOINT

FLOW

END SUPPORT

150

TRANSITION1000

380

DIA

.

O.D

.

KERBS & CHANNEL

A

K

K

J

J B

B

A

PRECAST BARRIER KERB(FIG.3) AS DIRECTED BY

THE ENGINEER

TRANSITION VARIESACCORDING TO ROAD

SLOPE

PRECAST COVER SLABSAS MULTIPLES OF 2000

SLAB "B"

2000 SLAB "A"

INTERMEDIATESUPPORT

L

1 in 3

FLOW

EE

JOINT JOINT

CL

2000

JOINT

FLOW

INLET CHANNEL

ROAD EDGE

200 1

80

CHANNELKERBS &

JOINT

150

C

FLO

W23

090

0 M

IN.

230

230

JOINT

450

AP

RO

N21

060

0

25

K

K

J

J


THE ENGINEER


SLOPE

PRECAST COVERSLABS AS MULTIPLES

OF 2000 SLAB "B"

L

230

210

600

25

JOINT

FLOW 200180

JOINT

1 in 3

INTERMEDIATESUPPORT

2000 SLAB "A"

PRECAST COVERSLABS AS MULTIPLES

OF 2000 SLAB "B"

2000PRECAST BARRIER KERB(FIG.3) AS DIRECTED BY

THE ENGINEER


SLOPE

F

F

JOINT

L

LJOINT JOINT

APRON

FIG 7 KERB

BLEND SECTION2% NOMINAL SIDE SLOPE SIDE SLOPE 4% ON KI COVERS - 2% ON BALANCE BLEND2% NOMINALSIDE SLOPE

150

BACK OFSIDEWALK

120

180

LEGEND



AMENDMENT NUMBER:

DRAWN BY:

DRAWING CHECKED BY:


DESIGNED BY:


CHECKED BY:


NOTES

JRA-SDSW-020

SCALE AS SHOWN: NTS

DATE: 06/05/2015

STORMWATER : DESIGN

KERB INLETSPLANS & ELEVATION

1. REFER TO JRA-SD-SW-021 FORKERB INLET SECTIONS.

2. REFER TO JRA-SD-SW-022 FORSLAB REINFORCING DETAILS.

3. REFER TO JRA-SD-SW-023 FORKERB, APRON & SUPPORTDETAILS.

4. SUBJECT TO SYSTEM DESIGN, THEKERB INLET CHAMBER MAY NEEDTO BE ENLARGED TO CATER FORTHE OUTFLOW PIPE DESIGN.

5. THE DESIGN OF A LOW POINTKERB INLET MAY BE DETERMINEDBY 1 IN 25 YEAR FLOODEXPECTATIONS TO REDUCE THERISK OF SIGNIFICANT PONDING INTHE ROAD AT THE LOW POINT.

6. IN TERMS OF THE PROMOTION OFBICYCLE LANES IT ISRECOMMENDED THAT CHANNELSECTIONS BE LEVEL OR ACONTINUATION OF ROADCROSSFALLS BETWEEN KERBINLETS. THE CHANNEL SHOULDTHEN BE INCREASED TO A MAX.SLOPE OF 1 IN 3 OVER THECHANNEL TRANSITION AT A KERBINLET.

KERB INLET: LOW POINT

KERB INLET: BASIC PLAN

SECTIONAL ELEVATION ON E -E (NOTE: VERTICAL SCALE EXAGGERATED 2 TO 1)

700x700

TYPICAL SQUARE MANHOLE COVERAND FRAME FOR KERB INLETS

600x600

760x760

52

CONCRETE INFILL- 4 QUADRANTSPRECAST COVER SLAB "B" (SEE

DETAIL DWG.JRA-SD-SW-022)

23075

360

100

SLAB "A"(SEE JRA SD-SW-022)

INLE

TS

EC

TIO

N

450

600

MA

X.

R 50

100

MIN

.

DIRECTION OF FLOW

FLOOR SLAB

I.L I.L 50 MIN

.

BENCHING

VARIES MIN. 120075 230 230 75

SECTION A-A

150 CONC. SLAB

VA

RIE

S C

HA

MB

ER

SE

CTI

ON

150 CONC. SLAB

230mm BRICKWORK

CL

600

450

1200 MIN.

SECTION L-L(SEE JRA-SD-SW-020)

BENCHING AND INTERNAL HEIGHT DICTATED BY OUTFALL PIPE

1550

600

LOW POINT OUTFALL MAY BEDESIGNED FOR 25 YEARFLOOD CONDITIONS & REQUIRELARGE OUTFALL PIPE Ø

CL

FOR ENLARGED DETAILSEE JRA-SD-SW-023

1000

BENCHING

FOR ENLARGED DETAILSEE JRA-SD-SW-023

450 21025

10025

100

CEMENT MORTARBEDDING

REINFORCED WITHY12mm BARS AT 150 c/cBOTH WAYS - 25 COVER30

0M

IN.

RELATIVE POSITION OFMANHOLE AND PIPELINE

IN ROAD WAY (WHEREAPPLICABLE)

R100

300

TYP

.

(SEE NOTE 4)

1/2 OD + 785 MIN 1085

1 : 3 1 : 3

D/2 75

BENCHING

VARIES - MIN. 900

150

VA

RIE

S -

750

MIN

.15

0

SECTION B-B

600

PREMIX (SEE NOTE 5)

600

MA

X.

150

1. SEE DRG. JRA-SD-SW-020 FORPLAN AND SECTION POSITIONSOF KERB INLET.

2. CONCRETE STRENGTH TO BE ASFOLLOWS:a) MANHOLE SURROUNDS AND

BENCHING: CLASS 15/19b) CAST IN-SITU DECK SLABS &

FOUNDATION: CLASS 20/19c) PRECAST COVER SLABS &

OTHER ITEMS: CLASS 25/19d) CAST IN-SITU KERBS,

APRONS ETC.: CLASS 25/193. ALL FLOORS AND BENCHING TO

BE STEEL TROWELLED WITH ASMOOTH RADIUS.

4. MANHOLE & KERB INLETINTERNAL WIDTHS AND DEPTHS:a. WIDTH-

750 mm PIPES AND LESS -900mm825 mm PIPES AND MORE-1200mm.SOME MANHOLE SIZES TO BEDETERMINED ON SITE.

b. DEPTH- THE DEPTH INDICATEDSHOULD BE INCREASED IFNECESSARY FOR MANHOLESTO PERMIT SUFFICIENT DISCHARGE HEAD TODEVELOP.

c. MANHOLE DEPTH > 1,75m,WIDTH OF BRICKWORK TO BEINCREASED TO 345mm.

d. BELOW 3m SPECIALENGINEERING DESIGNREQUIRED FOR BRICKWORK.

5. NO BACKFILL TO BE DONE UNTILMORTAR IS SEVEN DAYS OLD.

6. PROVIDE STEP IRONS WHENDEPTH > 1,200m.

7. PIPES AT INLET AND OUTLET TOBE LAID SOFFIT TO SOFFIT.

8. SHOULD THERE BE A CHANGE INPIPE DIAMETER, THE GREATEROF THE TWO SHOULD BE USEDTO DETERMINE THE POSITIONINGOF THE PIPES.

9. ALL ROADWORKS TO COMPLYWITH THE SANS 1200SPECIFICATIONS.

10. ALL BRICKS TO BE OF QUALITYFBSE30 TO SANS 227-2007 WITHWATER ABSORTION <14% ANDEFFLORESCENE <10.

11. ALL BRICKWORK TO BE INENGLISH BOND.

12. SECTION L-L ILLUSTRATESVARIATIONS TO SECTION B-BREQUIRED AT A LOW POINT KERBINLET.


Drawing Sub-set

DRAWN BY:

DRAWING CHECKED BY:


DESIGNED BY:


CHECKED BY:


LEGEND

NOTES

DRAWING NUMBER EXTN.

AMENDMENT NUMBER:

JRA-SDSW-021

SCALE AS SHOWN: NTS

DATE: 13/05/2015

STORMWATER: DESIGN

SECTIONS OF KERB INLET

400

SECTION D - D

LOOP REINFORCEMENTWELDED TO INSIDECORNER OF ANGLE

IRON (R10)(SEESECTION M-M)

2 Y10-500-50 c

1 Y10-960 LONG

2 Y10-960 LONG

LIFTING HOLE 50 mm

4 Y10-190 LONG-130 c2 Y10-500-50 c

80 x 80 x 8mm L WITH LOOPREINFORCEMENT

3 Y12-1940 LONG-65 c/c

4 Y10-500 LONG-50 c/c

80 x 80 x 8mm L

40

50

4 Y 10-940 LONG-130 c/c

6 Y 10-960 LONG-185 c/c

520

503 Y12-1940 LONG-65 c/c4 Y10-500-50 c/c

100 125

800

2000

125

322

1040


IRON (R10)

5 Y10-500-80 c/c

LIFTING HOLE 50 mm

13 Y10-960 LONG-160 c/c

140 400 360

3 Y12-1940 LONG-65 c/c

5 Y10-500-80 c/c

80 x 80 x 8mm L

SLAB "A"

50

1040

520

50

40

320

6 Y10 -1940LONG - 130 c/c

2000

SLAB "B"

40

320

SECTION E - E

WELDED POINTS

H.T. WELDED MESH FABRICREF. No. 193

10mm MILDSTEEL LUGBAR WELDED TO ANGLE

80 x 80 x 8 x 2000mm L

3 Y12

SECTION M-M(SHOWING ANGLE IRON ON LONG EDGE OF COVER SLAB)

H.T. WELDED MESHFABRIC REF. No.193

20MANHOLE FRAME

CAST IN

LOOP REINFORCEMENTWELDED TO INSIDECORNER OF ANGLEIRON-(R10)

80 X 80 X 8mm L

LOOP REINFORCEMENTWELDED TO INSIDECORNER OF ANGLEIRON-(R10) (SEESECTION M-M)

80 X 80 X 8mm L

100

100

20

20

80 X 80 X 8mm L

LOOP REINFORCEMENTWELDED TO INSIDE CORNER

OF ANGLE IRON-(R10)

COVER 20mm

D

D

E

E

M

M



AMENDMENT NUMBER:

DRAWN BY:

DRAWING CHECKED BY:


DESIGNED BY:


CHECKED BY:


LEGEND

JRA-SDSW-022

SCALE AS SHOWN: NTS

DATE: 17/09/2014

STORMWATER: DESIGN

SLAB DETAILS

NOTES1. ALL CONCRETE TO BE CLASS

25/19.2. ALL REINFORCING BARS IN

PRECAST COVER SLABS TO BEDEFORMED HIGH TENSILE STEEL.

3. ALL PRECAST COVER SLABS TOBE BRUSH FINISHED.

4. ANGLE IRON TO BE PAINTEDWITH RED OXIDE UNDERCOATAND BLACK ENAMEL PAINT ASFINAL COAT.

5. ANGLE FACE ON SLAB "B" TOFACE ROADWAY.

KI BRICKWORK

KI CHAMBER

G GAPRON

25

120

25

100

MORTAR FILL

150

INTERMEDIATE SUPPORT

ANGLE IRON

SUPPORT SETBACK

13

KI COVER SLAB4%

400

CEMENT MORTARBEDDING

ROAD

345

90115

25

115

345

110

400

110

620

RO

AD

KI C

HA

MB

ER

KI BRICKWORK

INTERMEDIATE SUPPORT

MORTAR FILL

F F

200 - 450VARIES 425 - 450 125

120

120

SLOPE 1 : 3

R10R10

VARIES VARIES150-300

SECTION K - KSECTION J - J

DETAIL OF JOINTIN APRON

CHANNEL BEYONDLEVEL OR AT ROADCROSSFALL

R 40

400

R 40

115 R 40

400

400

END SUPPORT FORCOVER SLAB

INTERMEDIATE SUPPORTFOR COVER SLAB

230

400

115

230

LEGEND



AMENDMENT NUMBER:

DRAWN BY:

DRAWING CHECKED BY:


DESIGNED BY:


CHECKED BY:


NOTES

JRA-SDSW-023

SCALE AS SHOWN: NTS

DATE: 06/05/2015

STORMWATER : DESIGN

KERB, APRON & SUPPORT DETAILSKERB INLETS

1. REFER TO JRA-SD-SW-020 FORPOSITION OF SECTION F-F ANDFOR END/INTERMEDIATE SUPPORTPOSITIONS.

2. REFER TO JRA-SD-SW-020 FORSECTION J-J AND K-K POSITIONS.

3. REFER TO JRA-SD-SW-021 FORFULL KERB INLET INTERSECTIONS.

4. THE PRINCIPLES OF SECTION F-FALSO APPLY TO THE ENDSUPPORT INSTALLATIONS,SPECIFICALLY REGARDINGLOCALISED WIDENING OF THE KIWALL TO 346mm.

SECTION G-G THROUGH KI SUPPORT

SECTION F-F THROUGH KI APRON & SUPPORT

C

FLO

W

L

SECTIONAL PLANKERB INLET/ MANHOLE CONNECTION

(ADJACENT MAIN LINE PIPE)

CL

FLOW

900 MIN.(SEE NOTE 2)

230

230

BENCHING

BENCHING

MAIN STORMWATER PIPELINE



AMENDMENT NUMBER:

DRAWN BY:

DRAWING CHECKED BY:


DESIGNED BY:


CHECKED BY:


NOTES

JRA-SDSW-024

SCALE AS SHOWN: NTS

DATE: 03/02/2015

STORMWATER: DESIGN

KERB INLET/MANHOLE COMBINATIONS

LEGEND

1. WHEN THE MAIN STORMWATERLINE IS CLOSE TO A KERB INLET,BUT CANNOT BE INCORPORATEDBELOW THE K.I., THE K.I.BRICKWORK CAN BE CONTINUEDINTO THE MANHOLE. TOFACILITATE WATER FLOW THEMANHOLE MAY BE ORIENTED AT60° TO THE K.I.

2. THE INTERNAL WIDTH OF THEMANHOLE SHOULD BE AT LEAST900mm TO FACILITATE CLEANING.

C

FLO

W

L

CL

230 900 230

520Ø

PIP

E

230

2260

1360

230

900

230

900

FLOW

SAND TRAP

MANHOLECOVER

450

1200 MIN.

600

BENCHING

A

A

SECTIONAL PLANKERB INLET/ SAND TRAP

SECTION A - A

150

450-

600

MA

X.CONCRETE SURROUNDS

TO MANHOLE

WALL TO INCREASETO 345mm THICK IFDEPTH BELOWSLAB EXCEEDS1.75m

CLASS 20/19 IN-SITUCONCRETE BENCHING

757510

0

100

CLASS 20/19 IN-SITUCONCRETE FLOOR

400

900 230

TRAP

FIRST TWO ROWS OFBRICKS TO HAVE10mm OPENINGS

BETWEEN BRICKS TOPERMIT WATER

SEEPAGE

900

STA

GG

ER

ED

STE

PIR

ON

S A

T30

0mm

CTO

C600

CLASS 20/19 IN-SITUCONCRETE FLOOR

MANHOLE COVERAND FRAMESEE NOTE 1



AMENDMENT NUMBER:

DRAWN BY:

DRAWING CHECKED BY:


DESIGNED BY:


CHECKED BY:


NOTES

JRA-SDSW-025

SCALE AS SHOWN: NTS

DATE: 29/02/2015

STORMWATER: DESIGN

KERB INLET WITH SAND TRAP

LEGEND

1. FOR NEW INSTALLATION ANDREPLACEMENT MANHOLESPECIFICATIONS USE APPROVEDNON-METALLIC MANHOLE COVERSAND FRAMES INCOMPLIANCE WITHSANS 1882-2003 OR SANS50124-1994 (EN124-1994)

2. THE KERB INLET, MANHOLE, SANDTRAP COMBINATION MAY VARYACCORDING TO SPECIFIC SITES, INPARTICULAR WHEN CONNECTINGA NEW K.I./SAND TRAP TO ANEXISTING STORMWATER PIPE.

300MAX.

150

1000

1000

1310

1310

25 COVER

150

75 230 1200 230 75

230 VARIES MIN. 1200 230

230

VA

RIE

S M

IN. 9

0023

0

60 degMAX.

4 Y12 @ 110 c/c

2 Y16

4 Y12 @ 110 c/c

4 Y12 @ 110 c/c

2 Y16

4 Y12 @ 110 c/c

REINFORCEMENT (a) Y12 AT150c/c BOTH WAYS, 25 COVER

230mm BRICK WALL

(b) 110c/c FOR MAIN BARSWHERE SLAB IS UNDER

ROADWAY

M.H. COVER AND FRAME TOSANS 558-1973 (TYPE 6 INSIDEWALKS AND STANDS -TYPE 2A IN ROADS)STEP IRONS TO BS 1247AT 300c/c, STAGGERED

900x900 SHAFT230 230

MIN

. 900

IN R

OA

DS

1200

SECTION THROUGH SHALLOW MANHOLE WITH SHAFT(SEE NOTE 6)

CONCRETE SURROUNDSTO MANHOLE

SECTIONAL PLAN

REINFORCEMENT DETAIL FOR COVER SLAB

FLOW

REFER TO JRA-SD-SW-051

REFER TO JRA-SD-SW

-052

PREFERRED 450MAX. 600

BENCHING

BENCHING

BENCHING

BENCHING



AMENDMENT NUMBER:

DRAWN BY:

DRAWING CHECKED BY:


DESIGNED BY:


CHECKED BY:


LEGEND

NOTES

JRA-SDSW-050

SCALE AS SHOWN: NTS

DATE: 11/05/2015

STORMWATER : DESIGN

MANHOLE DETAILSFOR CONDUITS < 750mmØ

1. CONCRETE STRENGTH TO BE ASFOLLOWS:a. MANHOLE SURROUNDS AND

BENCHING: CLASS 15/19b. CAST IN-SITU DECK SLABS

AND FOUNDATION: CLASS 20/19

c. PRECAST COVER SLABS ANDOTHER ITEMS: CLASS 25/19

d. CAST IN-SITU KERBS, APRONSETC.: CLASS 25/19

2. ALL FLOORS AND BENCHING TOBE STEEL TROWELLED WITH ASMOOTH RADIUS.

3. ALL BRICKS TO BE OF QUALITYFBSE 30 TO SANS 227-2007, WITHWATER ABSORPTION < 14% ANDEFFLORESCENCE <10.


5. MANHOLE AND KERB INLETSWIDTHS AND DEPTH:

6. FOR DEEP MANHOLES SEEJRA-SD-SW-051.

7. SEE JRA-SD-SW-060-062 FORNON-TYPICAL DESIGNS.

8. FOR NEW INSTALLATION ANDREPLACEMENT MANHOLESPECIFICATIONS USE APPROVEDNON-METALLIC MANHOLECOVERS AND FRAMES INCOMPLIANCE WITH SANS 1882 -2003 OR SANS 50124 - 1994 (EN 124- 1994).

a. WIDTH:-750 mm PIPES AND LESS -900mm825 mm PIPES AND MORE -1200mm .

b. SOME JUNCTION MANHOLESIZES TO BE DETERMINED ONSITE

c. DEPTH:-THE DEPTH INDICATEDSHOULD BE INCREASED IFNECESSARY FOR ANGLE ANDJUNCTION MANHOLES TOPERMIT SUFFICIENTDISCHARGE HEAD TODEVELOP.

d. MANHOLE DEPTH > 1,75m,WIDTH OF BRICKWORK TO BEINCREASED TO 330mm.

230900 x 900 SHAFT

230



ROADWAY

M.H. COVER AND FRAME TOSANS 558-1973 (TYPE 6 INSIDEWALKS AND STANDS -TYPE 2A IN ROADS)


150

300 STEP IRONS TO

BS 1247 STAGGEREDAT 300 C/C

230

345

MANHOLE OFFSET FULLY TOONE SIDE - TYPE 4A

STANDING / EQUIPMENTHOLDING AREA

230mm BRICK WALL

450

+/- 3

0001750

ALL DETAIL IN THISSECTION - SEENOTE 1

115

60



AMENDMENT NUMBER:

DRAWN BY:

DRAWING CHECKED BY:


DESIGNED BY:


CHECKED BY:


LEGEND

NOTES

JRA-SDSW-051

SCALE AS SHOWN: NTS

DATE: 22/05/2015

STORMWATER : DESIGN

MANHOLES :FURTHER DETAILS

1. DETAIL 051 - 1 SHOWS A DEEPMANHOLE. BELOW 3m, THEMANHOLE IS SUBJECT TO SITESPECIFIC / DEPTH ENGINEERINGDESIGN. THE DETAIL GIVEN HEREOF THE LOWER SLAB IS FORILLUSTRATION PURPOSES ONLY.

2. THE SALIENT DESIGN FEATURESOF A DEEP MANHOLE WITH ANINTERMEDIATE LANDING /STAGING SLAB, AS SHOWN,INCLUDE:

3. FOR SPECIFIC MANHOLE DETAILSREFER TO SANS 558 - 1973.

4. FOR NEW INSTALLATION ANDREPLACEMENT MANHOLESPECIFICATIONS USE APPROVEDNON-METALLIC MANHOLECOVERS & FRAMES INCOMPLIANCE WITH SANS 1882 -2003 OR SANS 50124 - 1994 (EN 124- 1994).

DETAIL 051 - 1

DETAIL AHEAVY DUTY MANHOLE (SIMPLIFIED)

DETAIL BLIGHT DUTY MANHOLE (SIMPLIFIED)

• DESCENT/ASCENTSTAGING AREA;

• OFFSET MANHOLE TOTHE NEXT LEVEL;

• OFFSET OF THELOWER STEP IRONS.

LEGEND



AMENDMENT NUMBER:

DRAWN BY:

DRAWING CHECKED BY:


DESIGNED BY:


CHECKED BY:


NOTES

JRA-SDSW-052

SCALE AS SHOWN: NTS

DATE: 10/05/2015

STORMWATER: DESIGN

DESIGN OF STEPPED MANHOLES

1. TOPOGRAPHY OFTEN REQUIRESSTEPPED MANHOLES TOREDUCE THE VELOCITY IN THEPIPED STORMWATER SYSTEM.

2. THESE STRUCTURES REQUIRECAREFUL CONSIDERATION TOAVOID DESTRUCTION OF THECHAMBER WALL OPPOSITE THEDISCHARGE POINT. THERE IS NOMORTAR THAT CAN STAND UPTO THE EROSIVE FORCE OFWATER POUNDING ON THEJOINTS OF THE BRICKWORK INTHE CHAMBER, IN FACT OVER APERIOD OF TIME, EVENCONCRETE WILL DETERIORATE.THE TROUBLE IS THAT BY THETIME THE DEGRADATIONBECOMES APPARENT, MUCHDAMAGE HAS BEEN DONE.

3. THE JRA HAS ADOPTED DESIGNCRITERIA THAT WILL LIMIT THEDAMAGE TO STEPPEDMANHOLES AND IS DESCRIBEDON THIS DRAWING.

FORMULAE:

D0 = DISCHARGE DIAMETER

D1 = OUTLET DIAMETER

V0 = DISCHARGE VELOCITY

V1 = LANDING VELOCITY IN CHAMBER

L1 = LENGTH OF TOP WATER PROFILE OF JET

L2 = LENGTH OF BOTTOM PROFILE OF JET

H1 = HEIGHT BETWEEN SOFFIT OF INLET TO INVERT OF OUTLET

H2 = HEIGHT BETWEEN INVERT OF INLET TO INVERT OF OUTLET

L = LENGTH OF STEPPED MANHOLE

1. ADJUSTING MANHOLE LENGTH TO AVOID EROSION:THE JET OF WATER DISCHARGED FROM THE UPSTREAM PIPES LOSES VELOCITY AND THEREFOREEXPANDS. THE DISCHARGE REMAINS THE SAME AND THUS Q = AV APPLIES. THE DISTANCE FROM THE INLET TO THE OUTLET TO THE CHAMBER MUST TAKE THIS INTO ACCOUNT, EITHER IN HEIGHTTO ACCOMMODATE THE VELOCITY HEAD OR IN INCREASED DIAMETER LEADING TO THE DOWNSTREAM PIPE.

V1 = (2g(H1 - D0/2))0.5

L1 = V (2H1/g)0.5

L2 = V(2H2/g)0.5

L = L1 - D1/4

2. BENCHING FOR STEPPED MANHOLES:BENCHING IN THE MANHOLE IS TO FOLLOW THE BOTTOM PROFILE OF THE FREE JET UP TO H2/2, BEYOND WHICH THE PROFILE IS REVERSED. THE COORDINATES OF THE PROFILE ARE DETERMINED BY CALCULATING ΔL VS ΔH USING THE FORMULA FOR L2.THE ENTRANCE SHOULD BE ROUNDED TO AVOID ENTRY LOSSES AS MUCH AS 50% OF THE ENERGYHEAD, RESULTING IN AN EVEN HIGHER WATER LEVEL IN THE CHAMBER. IN THIS SITUATIONh = (V²/2G)0.5 STILL APPLIES.

L

H1

D0

H2

D1

L2

L1

FIGURE 1

H2/

2

BENCHING

PLAN: SETTING OUT DETAILDETAILS OF 45° - 90° JUNCTIONS

PLAN:REINFORCEMENT DETAILS

DETAILS OF 45° - 90° JUNCTIONS FOR LARGER PIPES

SECTION D - DDETAILS OF 45° - 90° JUNCTIONS

SECTION E - EDETAILS OF 45° - 90° JUNCTIONS

W LENGTH L (SEE TABLE 1 ) W (SEE JRA-SD-SW-062)

W

D5

TANGENT LENGTH T2

TANGENT LENGTH T2

D4D3

CLPI.1

OFFSET LINE 1

OFFSET LINE 2

PI.2

W

RADI

US R

2

RADIUS R2+D4

D1

D3

BARS C

W

RADIUS R2

D2

BARS "D"

BARS "E"

BARS "E"

BARS "A"

BARS "B"

BARS A-BTAKEN ALONGTHIS LINE BARS "F"

BARS "F" 150

W

S2

W

D1

SECTION A - BDETAILS OF 45° - 90° JUNCTIONS

W

25

TV

BARS "D"BARS "C"

BARS "D"BARS "C"

BENCHING

W

25

T

BARS "A"BARS "B"W

BENCHING

BARS "A"BARS "B"

V

BARS "E"BARS "F"BARS "C"

230

U

25

D1

W

T

LOWER SLAB

UPPER SLAB

D3

W

U

WEEPHOLES @

3m C/C

WEEPHOLES

@ 3m C/C

H

1300

MIN

(SE

E N

OTE

8)

230

T

D1 H

GROUND LEVEL

D3

SECTION A - ADETAILS OF 45° - 90° JUNCTIONS

BARS "F"BARS "E"

BARS "D"

BARS "D"

230

BARS"C"

BARS "C"

LOWER SLABW UPPER SLAB

WEEP HOLES @3m C/C

U

T

±1300

1300

MIN

(SE

E N

OTE

8)

TABLE 1: VALUES OF L AND R2NOMINAL Ø 03(mm)

L(m)R(m)

825 900 1050 1200 1350 1500 1650 1800

2.292.33 2.54

2.48 2.902.96 3.38

3.31 3.713.79

4.104.18

4.494.57

4.854.95

TABLE 2: TANGENT LENGTHS, T2

D3 (mm) D4 (mm)DIAMETERS

90 85 80 75 70 65 60 55 50 45DEFLECTION ANGLE "Δ""

8259001050

13501200

150016501800

93310141185

1516167218281978

1352

2.332.542.96

3.794.184.574.95

3.38

2.142.332.71

3.473.83

4.194.54

3.10

1.962.132.48

3.183.513.834.15

2.84

1.791.952.27

2.913.21

3.513.80

2.59

1.631.782.07

2.652.933.203.47

2.37

1.481.621.89

2.412.662.913.15

2.15

1.351.47

1.71

2.192.412.642.86

1.95

1.211.321.54

1.972.182.382.58

1.76

1.091.181.38

1.771.952.132.31

1.58

0.971.051.23

1.571.731.892.05

1.40

DEFLECTIONANGLE "Δ"

CL

CL CL CL

CL

CL

BARS "D"BARS "C"

BARS "A"BARS "B"

GROUND LEVEL

BARS "A"BARS "B"

BARS "D"

D2

VARIES

D

A

A

D

C

C

B

EE

VARIES

SEE JRA-SD-SW-061

FOR MANHOLE SHAFTDETAILS REFER TOJRA-SD-SW-050/052



AMENDMENT NUMBER:

DRAWN BY:

DRAWING CHECKED BY:


DESIGNED BY:


CHECKED BY:


LEGEND

NOTES

JRA-SDSW-060

SCALE AS SHOWN: NTS

DATE: 15/05/2015

STORMWATER: DESIGN

DETAILS OF STANDARD BUILT UP SECTIONS FOR BENDS ANDJUNCTIONS FOR CONDUITS > 750mmØ (SHEET 1 OF 3)

1. POINT PI.2 LOCATED ON THEINTERSECTION OFFSET LINES 1& 2 TO HALF THE EXTERNAL PIPE DIAMETERS ie D5/2 & D4/2RESPECTIVELY.

2. REFER TO JRA-SD-SW-062 FORVALUES OF W - SEE TABLES ANDNOTE 2.

3. REFER TO JRA-SD-SW-061 FORSECTION C-C.

4. ALL BRICKS TO BE OF QUALITYFBSE 30 TO SANS 227-2007WATER ABSORPTION <14% ANDEFFLORESCENCE <10.

5. ALL BRICKWORK TO BE ENGLISHBOND.

6. REFER TO JRA-SD-SW-062 FORBENDING SCHEDULES

7. DIMENSION D4 VARIESDEPENDANT ON TYPE ANDCLASS OF PIPE - VALUE GIVEN ISFOR GUIDANCE ONLY - SHOULDBE MEASURED ON SITE.

8. IF THE CHAMBER INVERT ISMORE THAN 1.98m BELOWGROUND LEVEL THE 1300 MINCHAMBER HEIGHT MUST BEINCREASED AS NECESSARY,WITH AN APPROPRIATEINCREASE IN WALL THICKNESSW AS SHOWN ONJRA-SW-SD-062.

LC

OFFSET LINE 4

D1

150

D3D4

W

W

W

WLENGTH L (SEE TABLE 1 SW-060)W

D2

D6

D6/

2+W

BARS "F"

BARS "E"

BARS "E"DEFLECTIONANGLE " "

PI. 1

CL

LC

PI. 3 OFFSET LINE 3

BARS "F"

G

G

PLAN: SETTING OUT DETAILDETAILS OF JUNCTIONS LESS THAN 45°

PLANDETAILS OF BEND

LC D

2

D3

BARS "D"

BARS "C"

DEFLECTIONANGLE " "

LC

INCOMING PIPES TOBE BUILT IN WHERENECESSARY.

CL

BARS "E"

BARS "F"

TAN

GE

NT

LEN

GH

T "T

1" (S

EE

NO

TE 6

ON

JR

A-S

D-S

W-0

62)

W

TANGENT LENGHT "T1" (SEE NOTE 7 ON JRA-SD-SW-062

W

D1

W

S1

W

RAD

IUS R

1 (SEE NO

TE 7)

RADIUS R2 **

X

Y

Y

X

D3

V

W 600 W

V

25

U

T13

00 M

IN.

GROUND LEVEL

STEP IRONS@ 300 mm C/C

BARS "F"BARS "E"

BARS "C"BARS "D"

D2

450 PREFERREDMAX. 600

(SEE JRA-SD-SW-060)

VARIES

BENCHING

SECTION C-CDETAILS OF 45° - 90° JUNCTIONS

D1

D3

WW

D2

UV

GROUND LEVEL

CL

BARS "F"

CL

BARS "F"BARS "E"

BARS "E"

450 PREFERREDMAX. 600

BENCHING

SECTION G-GDETAILS OF JUNCTIONS LESS THAN 45°

DETAILS OF BENDSECTION Y-Y

25

D2

BENCHING

D3

BARS "D"BARS "C"

BARS "D" BARS "C"

W S1 W

TV

DETAIL OF HOOKS

40 mm

80 m

m

S1 + (380 OR 600 mm)

9Ø

4Ø Ø



AMENDMENT NUMBER:

DRAWN BY:

DRAWING CHECKED BY:


DESIGNED BY:


CHECKED BY:


NOTES

JRA-SDSW-061

SCALE AS SHOWN: NTS

DATE: 15/05/2015

STORMWATER: DESIGN

DETAILS OF STANDARD BUILT UP SECTIONS FOR BENDS ANDJUNCTIONS (SHEET 2 OF 3)

LEGEND

1. ** REFER TO NOTE 6 ONJRA-SD-SW-062.

2. DESIGNER'S NOTE: SPECIFY T1, R1,WIDTH AND OUTSIDE ARC LENGTHON WORKING DRAWING.

3. POINT PI.3 IS LOCATED ON THEINTERSECTION OF OFFSET LINES 3& 4 WITH OFFSETS FROMCENTRELINE EQUAL TO (D6/2+W)AND D4/2 RESPECTIVELY.

4. REFER TO JRA-SD-SW-060 FORSECTION C-C.

5. REFER TO JRA-SD-SW-062 FORPOSITION OF SECTION X-X.

6. ALL BRICKS TO BE QUALITY FBSE30 TO SANS 227-2007 WATERABSORPTION < 14% ANDEFFLORESCENCE <10.

7. ALL BRICKWORK TO BE ENGLISHBOND.

8. REFER ALSO TO NOTES ONJRA-SD-SW-062.

END SUPPORT FOR COVER SLAB

B

230

100115 R 40

B

230

REINFORCED COVER SLAB "A"(SEE JRA-SD-SW-022)

100

VA

RIA

BLE

TO

1.75

m15

0

CLASS 15/19CONCRETE FLOOR

230 580 230

600X600 MANHOLEIN SLAB

115

MIN.450mm

230

1540

230

450mmMIN.

MAX. 60 °

1040

PLAN OF FIELD INLET (WITHOUT LID)

SECTION B-B

ELEVATIONSECTION

100

7575

BENCHING

450Ø MIN.1:31:3

2000

25 MPa CONCRETESUPPORTS 100mm INHEIGHT

230 230

STEP IRONS

END SUPPORT FOR COVER SLAB

230

100115 R 40

230

ELEVATIONSECTION



AMENDMENT NUMBER:

DRAWN BY:

DRAWING CHECKED BY:


DESIGNED BY:


CHECKED BY:


LEGEND

NOTES

JRA-SDSW-070

SCALE AS SHOWN: NTS

DATE: 17/05/2015

STORMWATER: DESIGN

DETAILS OF FIELD INLET

1. ALL BRICKS TO BE QUALITYFBSE30 TO SANS 227-2007 WITHWATER ABSORPTION <14% ANDEFFLORESCENCE <10.

2. ALL BRICK WORK TO BEENGLISH BOND.

3. REINFORCED CONCRETE SLABAND SUPPORTS AS PERJRA-SD-SW-022 AND 023, SLABTYPE "A" WITH SQUAREMANHOLE.

4. STEP IRONS TO BE 1247 AT300c/c, STAGGERED.

5. FOR DEEPER OR LARGER FIELDINLETS DESIGN ACCORDING TODRAWING JRA-SD-SW-050.

SECTION A-A

DETAIL A

SECTION B-B

5010

0

150

NON-METALLIC GRID INLETAND FRAME - BLITZ-BETONTYPE OR APPROVEDEQUIVALENT (SEE NOTE 1)

FIELD INLET SLAB

230 BRICK WALL

600 1360 MIN. 600

900 MIN.

100 6:1 MAX. SLOPE

GROUTED STONE PITCHING

230mm BRICK WALL

D

D

75 75

1600 1250-2500SUBJECT TO ENGINEER DESIGN

SUBJECT TO MANHOLE SIZE

230

±540

230

SU

BJE

CT

TO E

NG

. DE

SIG

N

230

900

MIN

.23

0

±260

0

PLAN

AA

B

B

SLOPE SLOPE

SLO

PE

SLO

PE

1200 MIN.OPTIONAL STONE

PITCHING SUBJECT TOLOCATION

DETAIL A

75

100

NON-METALLIC FRAMEEMBEDDED IN INLET

SURROUND

FALL 1 IN 100

G.L.

REFER TO DWGS.JRA-SD-SW-050TO 052 FORMANHOLE CRITERIA

MIN. 100mm BELOW G.L.

DETAIL A

5010

0

150

NON-METALLIC GRID INLETAND FRAME - BLITZ-BETONTYPE OR APPROVEDEQUIVALENT (SEE NOTE 1)

FIELD INLET SLAB

230 BRICK WALL



AMENDMENT NUMBER:

DRAWN BY:

DRAWING CHECKED BY:


DESIGNED BY:


CHECKED BY:


LEGEND

NOTES

JRA-SDSW-071

SCALE AS SHOWN: NTS

DATE: 20/05/2015

STORMWATER: DESIGN

DETAILS OF GRID INLET - 1

1. THE NUMBER OF GRID UNITSHAVE BEEN TAKEN AS ANEXAMPLE ONLY. GRID INLET TOBE NON METALLIC AND SIZE OFOPENING TO BE DETERMINED BYTHE DESIGNER IN TERMS OFPRODUCT TO BE USED.

2. FOR GRID INLET GRATING ANDFRAME USE BLITZ-BETON TYPEOR AN APPROVED EQUIVALENT.

3. STONE PITCHING IS ANOPTIONAL FINISH, SUBJECT TOTHE ENVIRONMENT. GRID INLETSMAY COMMONLY BE LOCATED INPARKING AREAS WHERE THESURFACE CAN BEAPPROPRIATELY SHAPED TODRAIN TO THE INLET.

4. ALL BRICKS TO BE OF QUALITYSANS 227-2007 WITH WATERABSORPTION <14% ANDEFFLORESCENCE <10.


D + 750

D

STORMWATERPIPE

D + 300

305

B =

1,5

(D +

H -3

00)

75

230

APRON SLAB75

D + B

A

OUTLET PLAN

A

1000

750 750

1000

150

500

150

BRICK ENDWALL

ENERGY DISSIPATORS(FIG.3 KERBING) SUBJECTTO ENGINEER APPROVAL

FRONTELEVATION

300

600

150

WEEP HOLES @±0.5m CENTRES

RENO MATTRESSOR SIMILAR TO

SITE CONDITIONSIF SPECIFIED

ROWLOCK COURSE

CONCRETE APRON

STORMWATER PIPE

SECTION A-A

SEE NOTE 8

B 230

150

MIN

.H

=100

0 M

AX

.

75

250

150

300

150

420

600

MESH REF. 617

ENERGY DISSIPATORS

50mm FALL



AMENDMENT NUMBER:

DRAWN BY:

DRAWING CHECKED BY:


DESIGNED BY:


CHECKED BY:


LEGEND

NOTES

JRA-SDSW-080

SCALE AS SHOWN: NTS

DATE: 18/05/2015

STORMWATER: DESIGN

DETAIL OF TYPICAL BRICK OUTLET STRUCTURE

1. THE MATERIAL FOR A DEPTH OF150mm UNDER THE APRON SLABMUST BE COMPACTED TO AMINIMUM DENSITY OF 90 % OFTHE MOD. AASHTO DENSITY.

2. ALL CONCRETE TO BE CLASS20/19.

3. ENERGY BREAKERS MUST BEPROVIDED WHEN REQUIRED BYTHE ENGINEER.

4. THIS OUTLET STRUCTURE ONLYTO BE USED WHEN PIPE SIZE ISLESS THAN 600 mm Ø.

5. ALL BRICKS TO BE OF QUALITYFBSE30 TO SANS 227-2007 WITHWATER ABSORPTION <14% ANDEFFLORESCENCE <10.


7. NO PLASTERING OF BRICKWORKWILL BE ALLOWED.

8. THE LOWER PORTION OF ANYBRICKWORK GREATER THAN 1mIN HEIGHT SHALL BE INCREASEDTO 345mm TO A MAX. OVERALLHEIGHT OF 1.75m.

9. BRICK SAMPLES SHALL BESUBMITTED FOR TESTING.

10. IN TERMS OF THE NATIONALWATER ACT, 36 OF 1998, A RATEOF DISCHARGE FROM ANOUTLET STRUCTURE SHALL NOTEXCEED 1m/SEC AND SHALLNOT BE GREATER THAN 100mmIN DEPTH. IF DESIGNINDICATIONS ARE THAT THESEFIGURES WILL BE EXCEEDED,ADDITIONAL ENERGYDISSIPATION MEASURES WILLBE REQUIRED.

11. REFER TO DWGS JRA-SD-SW-081& 082 FOR FURTHERINFORMATION.

PIPE OUTSIDE DIAMETER

LENGTH OF APRON SLAB

DHB

HEIGHT OF HEADWALL ABOVE PIPE

1.5

D

75

CONCRETE FLOOR

230 BRICK WALL200 x 200 x 250

PRECAST CONCRETEBLOCKS

4 D D

1.5

D

500

1000

RO

WS

@ 2

50 c

/c

150

SIDE SLOPES 1:2

400 400 400

300 2 D 2000

PLAN

230 BRICK WALL

CONCRETEFLOOR

150

1.5

DD4 D

1.5

D

75

300 2 D 75

PLAN

BB

AA

ENERGY DISSIPATION MEASURES DOUBLE DISSIPATION MEASURESON A SITE SPECIFIC BASIS

EARTH FLOOR1 % FALL

150

D +

400

D

0.5 % FALL 300

600

150CUT-OFF WALL

MESH REF 395

25 MPa CONCRETE

SECTION B-B

D +

400

150

D0.5 % FALL

MESH REF 395

100

25 MPa CONCRETE 200 x 200 x 250 PRECASTCONCRETE BLOCKS (SEENOTE 2).

CUT-OFF WALL

600

EARTH FLOOR 1 % FALL

SECTION A-AENERGY DISSIPATION OUTLET

230



AMENDMENT NUMBER:

DRAWN BY:

DRAWING CHECKED BY:


DESIGNED BY:


CHECKED BY:


LEGEND

NOTES

JRA-SDSW-081

SCALE AS SHOWN: NTS

DATE: 18/05/2015

STORMWATER: DESIGN

TYPICAL OUTLET STRUCTURE DETAILS

1. REFER TO DWGS. JRA-SS080 &082 FOR ADDITIONAL OUTLETSTRUCTURE NOTES.

2. ONE LAYER OF MESH REF 395TO BE PLACED ON FLOOR ANDCUT-OFF WALL AS SHOWN WITH40mm COVER AND MIN. LAPLENGTH OF 350mm.

3. ALL CONCRETE INCLUDINGPRECAST CONCRETE BLOCKSIN ENERGY DISSIPATINGOUTLETS TO BE CHAMFERED 25x 25 ON EXPOSED EDGES.


5. NO PLASTERING OFBRICKWORK WILL BE ALLOWED.ALL BRICKS TO BE OF QUALITYFBSE30 TO SANS227-2007 WITHWATER ABSORPTION <14% ANDEFFLORESCENCE <10.

6. THE LOWER PORTION OF ANYBRICKWORK GREATER THAN 1mIN HEIGHT SHALL BEINCREASED IN WIDTH TO 345mmTO A MAX. OVERALL HEIGHT1.75m.

10. IN TERMS OF THE NATIONALWATER ACT, 36 OF 1998, A RATEOF DISCHARGE FROM ANOUTLET STRUCTURE SHALLNOT EXCEED 1m/SEC ANDSHALL NOT BE GREATER THAN100mm IN DEPTH. IF DESIGNINDICATIONS ARE THAT THESEFIGURES WILL BE EXCEEDED,ADDITIONAL ENERGYDISSIPATION MEASURES WILLBE REQUIRED.

o

o

o

50

0,0362 (Q )

Do

1,333

2,333(m)D

50

50

DIMENSIONS

PLAN

SECTION A-A

GROUTED STONE PITCHING

C3Do

2Do

A DoA

PREFORMED SCOURHOLEGROUTED STONE PITCHING

B

C

3Do

D

MAX. 1:2D

o

FOR SHALLOW STILLINGBASIN (SEE NOTE)

DIMENSIONS FOR DEEP STILLINGBASIN (SEE NOTE)

2D (m)

9D (m)

D (m)

8D (m)A

B

C

D

5D (m)

0,5 D (m)

6D (m)

2D (m)

0,0552 (Q )2,333

1,333(m)

Do

o

o

o

A



AMENDMENT NUMBER:

DRAWN BY:

DRAWING CHECKED BY:


DESIGNED BY:


CHECKED BY:


LEGEND

NOTES

JRA-SDSW-082

DRAWING NUMBER

SCALE AS SHOWN: NTS

DATE: 18/05/2015

STORMWATER: DESIGN

EROSION PROTECTION AT OUTLET STRUCTURES

1. REFER TO DRG. JRA-SD-SW-080OR JRA-SD-SW-081 FOR DETAILSOF THE OUTLET STRUCTURE.

2. GROUTED STONE PITCHING TOBE DONE ACCORDING TO THESABS 1200 STANDARDIZEDSPECIFICATIONS.

3. D = HEIGHT OF OUTLET PIPECULVERT/BOX CULVERT.

4. REFER TO THE SANRALDRAINAGE MANUAL 6TH EDITION2013 AND THE DRAINAGEMANUAL APPLICATION GUIDE6TH EDITION 2013 FOR THEAPPLICABILITY OF THE VARIOUSTYPES OF EROSIONPROTECTION.

o

THIS TYPE OF EROSION PROTECTION ISNOT TO BE USED IN DOLOMITIC AREAS

115 600

115 500

2000 2000

300

1040

115

840

115

115

125

TRANSITION LENGTH TO SUIT (L)

PRECAST KI SLABS OVER (WITH IN-SITU TOPPING UNDER ENTRANCES)

MANHOLE

180 KERB

160100 COVER

230

A

A

B

B

GRADE WITHGUTTER

VOID

STANDARD K.I.SLABS OVER

CHANNEL GRADEBARRIER KERB

PLAN

ELEVATION AT KERB FACE

SLOPE OF GUTTER 1:30 MINIMUM

INVERT OF OUTLET

20 MIN SIDEWALK SLOPE

80 OPENING

GUTTER

1 IN 200

300

1000LENGTH BY DESIGNER

MIN. GRADE 1 IN 200

TYPE B TYPE A

20MPaCONCRETE

CAST IN-SITUCONCRETE SLAB

750 MIN.

CHANNEL

1200230

115810

115

450Ø PIPE OR450x450 BOXCULVERT

230810

2301 IN 200

1040300240 790 MAX. 115

80

115

FALL WITH SIDEWALK 2%SURFACING

STANDARD K.I. COVERSLAB TYPE B

100 SLAB

80 OPENING115

CHANNEL

VARIES115 TO

STANDARD KI COVERSLAB TYPE A

(MILD STEEL SHEARCONNECTIONS CUT OFF)

SECTION B-B

KERB OUTLETS

SECTION A-A

CHANNEL ALONGSIDEWALK

L (m)

TRANSITION LENGTHS

1 : 301 : 251 : 201 : 181 : 161 : 141 : 121 : 10

13.7611.148.677.726.785.874.984.10



AMENDMENT NUMBER:

DRAWN BY:

DRAWING CHECKED BY:


DESIGNED BY:


CHECKED BY:


LEGEND

NOTES

JRA-SDSW-083

SCALE AS SHOWN: NTS

DATE: 18/05/2014

STORMWATER: DESIGN

KERB OUTLETS

1. KERB OUTLETS ARE NOT TO BECONSTRUCTED WHERE THE GUTTER GRADE IS LESS THAN1 IN 30.

2. USE STANDARD TYPE A AND B KISLABS TO MATCH TO CASTIN-SITU SLAB. MANHOLE ANDSECOND OUTLET SLABS TO BETYPE A.

KERB INLETK.I.TAPER LENGTHL.

d (S

EE

TA

BLE

1)

Do/

2

(100

mm

MIN

.)D

o/12

Do

TRENCH WIDTH30

0

600m

m M

IN.

Do/

4TRENCH WIDTH

DoDo

X

300

600m

m M

IN.

Do/

4

TRENCH WIDTH

Do

GRANULARBEDDING

MATERIAL

ACCORDING TOTABLE 2 (SEE NOTES)

AVAILABLEBACKFILL

BACKFILLTYPE A

DETAIL 1

MIN

.D

o/12

(75m

m M

IN.)

Do/

8 (1

25m

m M

IN.

IN R

OC

K)

NORMALROAD LAYERS

BACKFILLTYPE B M

IN.

GRANULARBEDDING

MATERIAL


Do/

12 (7

5mm

MIN

.)D

o/8

(125

mm

MIN

.IN

RO

CK

)

INSITU CASTREINFORCED

CONCRETE SLABFOR REINFORCING

BACKFILLTYPE B

GRANULARBEDDING

MATERIAL

Do/

6(2

00m

m M

IN.)NORMAL

ROAD LAYERS


SITUATIONS WHERE A CONCRETESLAB IS REQUIRED

STORMWATER PIPES UNDERNEATH MAIN ROUTESUNDER THE FOLLOWING CIRCUMSTANCES1. COVER < 800mm FOR Do < 750mm2. COVER < 900mm FOR Do > 750mm

STORMWATER PIPESUNDER SIDEWALK

STORMWATER PIPESUNDERNEATH ROADS, ACCESS

ROADS & PARKING AREAS

SITUATIONS WHERE ACONCRETE BEDDING IS

REQUIRED

DETAIL 2 DETAIL 4

Do/

4

CONCRETE BEDDING(CLASS 20/19)

X = Do/4 WHEN TRENCH IS IS GRAVEL-SOILX = Do/8 WHEN TRENCH IS IN ROCK

DETAIL 3

1. ALL PIPES BELOW SIDEWALKS &OPEN AREAS TO BE CLASS 50 'D'EXCEPT WHERE COVER < 2.m ON1200mm Ø AND GREATER THECLASS OF THE PIPES ARE TO BEINCREASED TO 75 'D'.

2. FOR STORMWATER PIPES BELOWSTREETS & MAIN ROUTES SEETABLE 2.

3. THE CONTRACTOR SHALL AT ALLTIMES ADHERE TO THE SAFETYPRECAUTIONS AS SET OUT INSANS 1200 D-1988.

4. IF TRENCHES ARE 200mm WIDERTHAN THE SPECIFIED WIDTH INTABLE 2 IT MAY BE NECESSARYTO CHANGE THE PIPE CLASS.

5. BEDDING:a. NORMAL BEDDING

ACCORDING TO DETAIL 1.b. BEDDING ACCORDING TO

DETAIL 2.c. CONCRETE SLAB OVER PIPE

ACCORDING TO DETAIL 3.d. CONCRETE BEDDING

ACCORDING TO DETAIL 4.6. BEDDING MATERIAL:

THE MATERIAL USED CONSISTSOF SELECTED GRAVEL WITH PI <6, MUST BE FREE OF STONESLARGER THAN 20mm, ORGANICMATERIAL AND CLAY LUMPS. THEBEDDING MATERIAL AT THESIDES OF THE PIPE MUST BECOMPACTED TO 90% .MOD.AASHTO DENSITY AFTER THEPIPE HAS BEEN LAID.

7. BACKFILL TYPE A:THE MATERIAL USED MUST BEUNIFORM AND MUST BECOMPACTED TO 90% MODAASHTO DENSITY IN LAYERS NOTMORE THAN 100mm AND MUST BEFREE OF:a. ROOTS OF TREES, BUILDING

RUBBLE AND ORGANICMATERIAL.

b. CLAY LUMPS LARGER THAN75mm.

c. STONES LARGER THAN 20mm.8. BACKFILL TYPE B:

MINIMUM G9 MATERIALACCORDING TO TRH14CLASSIFICATION COMPACTED TOA MIN. OF 90% MOD. AASHTODENSITY IN LAYERS NOT MORETHAN 150mm.

9. MINIMUM PIPE SIZETO BE 450mmDIAMETER.

10. CONNECTIONS FROM ERVEN TOMUNICIPAL SYSTEM TO BE450mm.

Ø TRENCHWIDTH

COVER (m)

mm 0.6 0.9 1.0 1.2 1.5 1.8 2.0 2.5 3.0 4.0 5.0 6.0

450 950 50D 75D75D75D75D75D50D 50D75D 75D 75D75D

75D 75D 75D 75D 75D 75D 75D50D 50D 50D 50D 50D

50D 50D 50D 50D50D75D 75D 75D 75D 100D 100D 100D

100D100D100D75D 75D 75D 75D 75D 75D 75D 75D 75D

75D 75D 75D 75D 75D100D100D50D 50D 50D 50D 75D

75D 75D 75D 75D50D 50D 50D 50D 50D 100D 100D 100D

100D 100D 100D

100D 100D

100D 100D

100D 100D

100D 100D

100D100D

100D 100D

75D75D75D75D75D

75D 75D 75D 75D 75D 75D 75D 75D 75D 75D

75D75D75D75D

75D 75D 75D

75D75D75D

75D75D

75D75D

100D

50D 50D 50D 50D

50D 50D 50D 50D 50D 50D

50D50D50D50D50D50D50D

50D50D50D50D50D50D50D

50D50D50D50D50D50D50D

50D50D50D50D50D50D50D 50D

525 1020

600 1620

675 1710

750 1790

825 1870

900 1950

1050 2120

1200 2280

1350 2450

1500 2610

1650 2760

1800 3260

Ø TRENCHWIDTH

COVER (m)

mm mm 0.6 0.9 1.0 1.2 1.5 1.8 2.0 2.5 3.0 4.0 5.0 6.0

450 950 75D75D75D100D75D

75D

75D 100D 100D 100D

100D100D100D75D

75D 100D100D100D

75D 50D 100D 100D 100D

100D 100D 100D

100D 100D

100D 100D

100D 100D

100D 100D

100D 100D

75D

75D

75D

75D

50D

50D

50D

50D50D

50D50D50D

525 1020

600 1620

675 1710

750 1790

825 1870

900 1950

1050 2120

1200 2280

1350 2450

1500 2610

1650 2760

1800 3260

100D 100D 100D 100D 100D 100D 100D

100D100D100D100D100D100D100D100D100D100D100D

100D100D100D100D100D100D100D100D

100D 100D 100D 100D100D100D100D100D

100D100D100D100D100D100D100D100D

100D100D100D100D100D100D100D

100D100D100D100D100D100D100D

100D100D100D100D100D100D100D100D

100D100D100D100D100D100D100D100D

100D100D100D100D100D100D

100D100D100D100D100D100D

100D 100D 100D100D100D

100D100D100D

75D 75D 75D

75D 75D 75D

75D 75D 75D 75D

100D

75D75D75D

50D

50D

TABLE 2

PIPE CLASSES FOR PIPES UNDER SECONDARY STREETS, LIGHT ACCESSROADS, PARKING AREAS, PRIVATE ENTRANCES AND SIDEWALKS FOR 40kN

WHEEL LOAD WITH DUE ALLOWANCE FOR IMPACT LOADS.

PIPE CLASSES FOR PIPES UNDER ROUTES FOR H8 - WHEEL LOADS OF EIGHT80kN WHEEL LOADS WITH DUE ALLOWANCE FOR IMPACT LOADS.

mm

TABLE 1DEPTH (d) REINFORCING MIN.

COVERCONCRETE SLAB:

CLASS 25/19 CONCRETE

Do < 900mm

900mm < 0 <1800mm

150mm

200mm

REF. No 245 WELDEDMESHREF. No 311 WELDEDMESH

40mm

40mm

D = PIPE CLASSD = INTERNAL PIPE DIAMETERo

STORMWATER: DESIGN



AMENDMENT NUMBER:

DRAWN BY:

DRAWING CHECKED BY:


DESIGNED BY:


CHECKED BY:


LEGEND

NOTES

JRA-SDSW-090

SCALE AS SHOWN: NTS

DATE: 23/10/2014

BEDDING OF STORMWATER PIPES WITH TABLES

150BENCHING

SEE NOTE 5

SEE NOTE 6

600 MIN

BACKFILL &BEDDING ASPER APPROPRIATEDETAIL ONJRA-SD-SW-090

SEE DETAIL A

150BENCHING

150BENCHING

SEE NOTE 1

150

SEE NOTE 2

SEE NOTE 3

SEE NOTE 4

EXISTINGROADLAYERS

30



AMENDMENT NUMBER:

DRAWN BY:

DRAWING CHECKED BY:


DESIGNED BY:


CHECKED BY:


LEGEND

NOTES

JRA-SDSW-091

SCALE AS SHOWN: NTS

DATE: 27/05/2015

STORMWATER : DESIGN

REINSTATEMENTOF STORMWATER TRENCHES IN ROADS

DETAIL A

1. SAWCUT JOINT PAINTED WITH ATACK COAT PRIOR TOREINSTATEMENT OF ASPHALT.

2. 30mm MIN. ASPHALT TO MATCHEXISTING SURFACING TYPE.

3. PRIME & TACK COAT.4. 150mm CRUSHED STONE BASE

COMPACTED TO 88% ARDMINIMUM, OR BASE TO MATCHEXISTING ROAD BASE.

5. 2 X 150mm C3 LAYERSCOMPACTED TO 95% MOD.AASHTO MIN, OR AS SPECIFIED BYTHE ENGINEER.

6. 150mm G6 COMPACTED TO 93%MOD. AASHTO MIN. OR ASSPECIFIED BY THE ENGINEER.

7. ALTERNATIVELY TO 5 & 6 ABOVE: USE 7% SOIL-CRETE IF

APPROVED BY THE ENGINEER.

TYPE B: SUBSURFACE DRAIN

KERBING

GRAVEL BACKFILL COMPACTED TO 90% MOD. AASHTO

SYNTHETIC FILTER - KAYMAT U14OR SIMILAR

300

D10

0

600

PERFORATED PIPE

COARSE GRADE STONE (19mm)

TYPE C: SUBSURFACE DRAIN

PAVEMENTLAYERS

H

200

D10

0

600

COARSE GRADE STONE

SYNTHETIC FILTER - KAYMAT U14OR SIMILAR

PERFORATED PIPE

BACKFILL COMPACTED TO 90% MOD. AASHTO

KERBING

0.15mm THICK POLYTHENE

FLOWNET DN1 OR SIMILAR

SYNTHETIC FILTER(KAYMAT U14 OR SIMILAR)

GRAVEL BACKFILL COMPACTEDTO 90% MOD. AASHTO

PERFORATED PIPE

H

600

0.15mm THICK POLYTHENE

TYPE D: SUBSURFACE DRAIN

600

COMBINED WITH STORMWATER PIPE

150

150

COARSE GRADEDSTONE 19mm

DO NOT PLUGHANDLING HOLES

SYNTHETIC FILTER - KAYMAT U14OR SIMILAR AROUND STONE ANDWRAPPED AROUND PIPE JOINTS

SEE NOTE 4

BEDDING AS PER JRA-SD-SW-090

BACKFILL AS PER JRA-SD-SW-090

COMPACTED TO 93% MOD. AASHTO



AMENDMENT NUMBER:

DRAWN BY:

DRAWING CHECKED BY:


DESIGNED BY:


CHECKED BY:


LEGEND

NOTES

JRA-SDSW-100

SCALE AS SHOWN: NTS

DATE: 18/05/2015

STORMWATER: DESIGN

TYPES OF SUBSURFACE DRAINAGE

1. THE APPLICABLE TYPE OFSUBSURFACE DRAIN TO BE USEDMUST BE SPECIFIED BY THEENGINEER. REFER TO TRH 15.

2. THE DESIGN OF SUBSURFACEDRAIN INSTALLATIONS MUSTTAKE LOCAL CONDITIONS INTOACCOUNT, SPECIFICALLY WITHRESPECT TO LOCAL SOILCONDITIONS.

3. USE WITH CARE IN DOLOMITICCONDITIONS.

4. WEEPHOLES FOR TYPE DINSTALLATIONS AT MANHOLES.

5. A COST COMPARISON OF TYPESA, B, & C TO ESTABLISH THEMOST ECONOMICAL SOLUTION ISRECOMMENDED.

D = DIAMETER AS SPECIFIED BYTHE ENGINEER

H = DEPTH AS SPECIFIED BY THEENGINEER

BACKFILL COMPACTED TO 90%MOD.AASHTO

FILTER SAND COARSE GRADE(TO BE COMPATIBLE WITH

NATURAL MATERIAL)

NO-FINES CONCRETEBLOCK (1:8 CEMENT/

COARSE GRADE STONE)

SYNTHETIC GEOTECHTILEFILTER - KAYMAT U14 OR

SIMILAR

BACKFILL TO 90%MOD. AASHTO

FILTER SAND COARSEGRADE (TO BE COMPATIBLEWITH NATURAL MATERIAL)

EXCAVATION

NO-FINES CONCRETEBLOCK (1:8 CEMENT/COARSEGRADE STONE)

500

D +

300

200

D10

0

H

300 300

600

NO-FINES COARSECONCRETE BLOCK

EXCAVATION

600

300

300

D150 150

PLANSECTION B-B

NO-FINES CONCRETE BLOCK AT ENDS

PLAN SECTION C-C

TRANSVERSE DRAINSTANDARD 45 deg BEND

300

300

STANDARD 45 deg JUNCTION

DIRECTION OF FLOW

300

300

NO-FINES CONCRETE BLOCK (1:8CEMENT/COARSE GRADE STONE)

200600

EXCAVATIONC

C

B

B

SYNTHETIC FILTER -KAYMAT U14 OR SIMILAR

400

150

320

75

COVER TORODDING EYE

TYPE 10C RECTANGULARWATER METER OR VALVE BOX

WITH HINGED LID

TYPE 10CRECTANGULARWATER METER ORVALVE BOX WITHHINGED LID.

400

150

320

75

COVER TORODDING EYE

CLASS 15/19CONCRETESURROUND

100Ø PITCHFIBRE PIPE

NGL

TYPE 10C RECTANGULARWATER METER OR VALVE BOX

WITH HINGED LID

DETAIL OFRODDING EYE



AMENDMENT NUMBER:

DRAWN BY:

DRAWING CHECKED BY:


DESIGNED BY:


CHECKED BY:


LEGEND

NOTES

JRA-SDSW-101

SCALE AS SHOWN: NTS

DATE: 18/05/2015

STORMWATER: DESIGN

SUBSURFACE DRAINAGE PIPE JUNCTIONS

D= DIAMETER AS SPECIFIED BYTHE ENGINEER

H= DEPTH AS SPECIFIED BYTHE ENGINEER

1. THE APPLICABLE TYPE OFSUBSURFACE DRAIN TO BE USEDMUST BE SPECIFIED BY THEENGINEER. REFER TO TRH 15.

2. THE DESIGN OF SUBSURFACEDRAIN INSTALLATIONS MUST TAKELOCAL CONDITIONS INTOACCOUNT, SPECIFICALLY WITHRESPECT TO LOCAL SOILCONDITIONS.

575

150

FRONT ELEVATION OF OUTLET

SECTION A-APLAN

WELDED MESH REF.395 NO-FINES CONCRETE ORPERFORATED PIPE

BALL OF CHICKEN WIRETO PREVENT ACCESS

OF RODENTS

230

100

150

D40

150

150

450

850 150

1000PRECAST 25/19MPa CONCRETE BLOCKSIF REQUIRED (CONCRETE BLOCKS MAYBE REPLACED WITH PRECAST KERBSOR NATURAL STONE).(SEE NOTE 5).

1070

85230

150

D15

0

230

150

D57

5

AA

CUT OFF WALL

NGL

8523

0

320

320



AMENDMENT NUMBER:

DRAWN BY:

DRAWING CHECKED BY:


DESIGNED BY:


CHECKED BY:


LEGEND

NOTES

JRA-SDSW-102

SCALE AS SHOWN: NTS

DATE: 18/05/2015

STORMWATER: DESIGN

DETAIL OF SUBSURFACE DRAIN OUTLET

1. ALL CONCRETE TO BE CLASS20/19

2. CONCRETE FINISH SHOULD BEAS PER WOODEN SHUTTER.

3. WING WALLS AND HEADWALLSTO BE CONSTRUCTED OUT OFENGINEERING CLASSBRICK.ALL BRICKS TO BEQUALITY FBS30 TO SANS227-2007 WITH WATERABSORPTION <14% ANDEFFLORESCENCE <10.

4. ALL BRICKWORK TO BEENGLISH BOND.

5. EROSION PROTECTION IS ONLYREQUIRED WITH OUTFLOWVELOCITIES IN EXCESS OF1m/SEC.

6. SUBSURFACE DRAINS ARE NOTRECOMMENDED IN DOLOMITICAREAS.

100

GL

BENCHING

50

CONCRETE CLASS20/19

SANS 558-1973 TYPE14A CI.COVER ANDFRAME

CONCRETE CLASS20/19 BLINDING IF REQUIRED

PLAN (COVER NOT SHOWN)

SECTION A-A

8030

0 (M

IN)

100

VARIES

SUB-SURFACE PIPE

100

110

440

110

100

860

100 110 440 110 100

860

A A

2x2Y10 EACH WAY



AMENDMENT NUMBER:

DRAWN BY:

DRAWING CHECKED BY:


DESIGNED BY:


CHECKED BY:


LEGEND

NOTES

JRA-SDSW-103

SCALE AS SHOWN: NTS

DATE: 17/09/2014

STORMWATER: DESIGN

SUBSURFACE DRAIN MANHOLE DETAIL

1. MAXIMUM DEPTH. OF MANHOLE IS 750mm.


3. ALL BRICKS TO BE FBSE 30 TOSANS 227-2007 WITH WATERABSORBTION < 14% ANDEFFLORESCENCE <10.




REVISION DATE JRA-SD-SW-M001 Sandton Stormwater Structures for Maintenance: Plan of Kerb Inlet (1 of 4) 300615 JRA-SD-SW-M002 Sandton Stormwater Structures for Maintenance: Sections of Kerb Inlet (2 of 4) 300615 JRA-SD-SW-M003 Sandton Stormwater Structures for Maintenance: Slab Details (3 of 4) 300615 JRA-SD-SW-M004 Sandton Stormwater Structures for Maintenance: Manhole Details (4 of 4) 300615

JRA-SD-SW-M005 Johannesburg Stormwater Structures for Maintenance: Details of Precast Cover Slabs for Wide Type Kerb Inlets – 1 (1 of 6) 300615

JRA-SD-SW-M006 Johannesburg Stormwater Structures for Maintenance: Details of Precast Cover Slabs for Wide Type Kerb Inlets – 2 (2 of 6) 300615

JRA-SD-SW-M007 Johannesburg Stormwater Structures for Maintenance: Layout Plan & Sections-1 (3 of 6) 300615 JRA-SD-SW-M008 Johannesburg Stormwater Structures for Maintenance: Layout Plan & Sections-2 (4 of 6) 300615 JRA-SD-SW-M009 Johannesburg Stormwater Structures for Maintenance: Layout Plan & Sections-3 (5 of 6) 300615 JRA-SD-SW-M010 Johannesburg Stormwater Structures for Maintenance: Additional Section Details (6 of 6) 300615


2.3

ST

OR

MW

AT

ER

: MA

INT

EN

AN

CE

PIPE

2000

JOINT

MIN

.108

51/

2 O

.D. +

735

FLOW

INLET CHANNEL

ROAD EDGE

200 1

80

CHANNELKERBS &

230

JOINT

125

C

FLO

W23

075

0 M

IN.

JOINT

MIN 1200K.I. CHAMBER

230

230

230

JOINT

450

AP

RO

N210

600

25

KERB INLET LENGTH

PLAN OF KERB INLET

JOINT

FLOW

END SUPPORT

150

TRANSITION1000

380

ó

DIA

.

O.D

.

KERBS & CHANNEL

A

K

K

J

J

B

B

A


THE ENGINEER


SLOPE

PRECAST COVER SLABSAS MULTIPLES OF 2000

SLAB "B"

2000 SLAB "B"

INTERMEDIATESUPPORT

L

200 - 450

SLOPE 1 : 3

VARIES 425 - 450 125

120

R 40

120

SLOPE 1 : 3

R10R10

VARIES VARIES150-300

400

R 40

115 R 40

SECTION K - K

400

400

END SUPPORT FORCOVER SLAB INTERMEDIATE SUPPORT

FOR COVER SLAB

SECTION J - J

DETAIL OF JOINTIN APRON

LEGEND



AMENDMENT NUMBER:

DRAWN BY:

DRAWING CHECKED BY:


DESIGNED BY:


CHECKED BY:


NOTES

JRA-SDSWM-001

SCALE AS SHOWN: NTS

DATE: 17/09/2014

STORMWATER MAINTENANCE

SANDTON SW STRUCTURES FOR MAINTENANCE PURPOSES (SHEET1 OF 4)

PLAN OF KERB INLET

1. FOR SECTIONS A-A AND B-B REFERTO DRG. JRA-SD-SW-M002

PRECAST COVER SLAB "B" SEEDETAIL DWG.JRA-SD-SW-M003

23075

360

100

SLAB "B"

INLE

TS

EC

TIO

N

600

R 50

100

MIN

.

DIRECTION OF FLOW

FLOOR SLAB

I.L I.L 50 MIN

.

BENCHING

VARIES MIN. 120075 230 230 75

SECTION A-A

150 CONC. SLAB

VA

RIE

S C

HA

MB

ER

SE

CTI

ON

150 CONC. SLAB

230mm BRICKWORK OR200mm CONCRETE ASDIRECTED

PREMIX (SEE NOTE 5)

450 210 600

25

150

100 25

100

CEMENT MORTAR BEDDING

REINFORCED WITH Y12mm BARSAT 150 c/c BOTH WAYS - 25 COVER

300

MIN

.

RELATIVE POSITION OF MANHOLEAND PIPELINE IN ROAD WAY

(WHERE APPLICABLE)

R100 150

300

TYP

.(SEE NOTE 9)

1/2 OD + 785 MIN 1085

1 : 3 1 : 3

D/2 75

BENCHING

MIN. 750 - VARIES15

0V

AR

IES

- 75

0 M

IN.

150

SECTION B-B

CL

1. SEE DRG. JRA-SD-SW-M001 FORPLAN AND SECTION POSITIONSOF KERB INLET.

2. CONCRETE STRENGTH TO BE ASFOLLOWS:a) MANHOLE SURROUNDS AND

BENCHING: CLASS 15/19b) CAST IN-SITU DECK SLABS &

FOUNDATION: CLASS 20/19c) PRECAST COVER SLABS &

OTHER ITEMS: CLASS 25/19d) CAST IN-SITU KERBS,

APRONS ETC.: CLASS 25/193. ALL FLOORS AND BENCHING TO

BE STEEL TROWELLED WITH ASMOOTH RADIUS.

4. MANHOLE & KERB INLET WIDTHSAND DEPTHS:a. WIDTH-

750 mm PIPES AND LESS -900mm825 mm PIPES AND MORE-1200mm.SOME JUNCTION MANHOLESIZES TO BE DETERMINED ONSITE.

b. DEPTH- THE DEPTH INDICATEDSHOULD BE INCREASED IFNECESSARY FOR MANHOLESTO PERMIT SUFFICIENT DISCHARGE HEAD TODEVELOP.

c. MANHOLE DEPTH > 1,75m,WIDTH OF BRICKWORK TO BEINCREASED TO 330mm.

5. KERB INLET - THE APRON OVERTHE LENGTH OF THE KERB INLETAND THE TRANSITION TO BELOWERED BY 25mm.

6. NO BACKFILL TO BE DONE UNTILMORTAR IS SEVEN DAYS OLD.

7. PROVIDE STEP IRONS WHENDEPTH > 1,200m.

8. PIPES AT INLET AND OUTLET TOBE LAID SOFFIT TO SOFFIT.

9. SHOULD THERE BE A CHANGE INPIPE DIAMETER, THE GREATEROF THE TWO SHOULD BE USEDTO DETERMINE THE POSITIONINGOF THE PIPES.

10. ALL ROAD WORKS TO COMPLYWITH THE SANS 1200SPECIFICATIONS.

11. ALL BRICKS TO BE OF QUALITYFBSE30 TO SANS 227-1986 WITHWATER ABSORTION <14% ANDEFFLORESCENE <10. 1



Drawing Sub-set

DRAWN BY:

DRAWING CHECKED BY:


DESIGNED BY:


CHECKED BY:


LEGEND

NOTES


AMENDMENT NUMBER:

JRA-SDSWM-002

SCALE AS SHOWN: NTS

DATE: 17/09/2014


SANDTON SW STRUCTURES FOR MAINTENANCE PURPOSES (SHEET 2 OF 4)

SECTIONS OF KERB INLET

20

100

E

COVER 20mm

E

20

400

H.T. WELDED MESHFABRIC REF. No.193

LOOP REINFORCEMENTWELDED TO INSIDECORNER OF ANGLEIRON-(R10)

80 x 80mm x 8mm L

100

20

MANHOLE FRAMECAST IN LOOP REINFORCEMENT

WELDED TO INSIDECORNER OF ANGLEIRON-(R10)

80 X 80 X 8mm L

SECTION D - D


IRON (R10)(SEE DETAIL)

2 Y10-500-50 c

1 Y10-960 LONG

2 Y10-960 LONG

LIFTING HOLE 50 mm

4 Y10-190 LONG-130 c2 Y10-500-50 c

80 x 80 x 8mm L WITH LOOPREINFORCEMENT

3 Y12-1940 LONG-65 c/c

4 Y10-500 LONG-50 c/c

80 x 80 x 8mm L

40

50

4 Y 10-940 LONG-130 c/c

6 Y 10-960 LONG-185 c/c

520

503 Y12-1940 LONG-65 c/c4 Y10-500-50 c/c

100 125

800

2000

125

322

D

D

1040


IRON (R10)

5 Y10-500-80 c/c

LIFTING HOLE 50 mm

13 Y10-960 LONG-160 c/c

140 400 360

3 Y12-1940 LONG-65 c/c

5 Y10-500-80 c/c

80 x 80 x 8mm L

SLAB "A"

50

1040

520

50

40

320

6 Y10 -1940LONG - 130 c/c

2000

SLAB "B"

40

320

LOOP REINFORCEMENTWELDED TO INSIDECORNER OF ANGLEIRON (R10)

80 x 80 x 8mm L

H.T. WELDED MESHREF. No. 193

SECTION E - E

WELDED POINTS

H.T. WELDED MESH FABRICREF. No. 193

10mm MILDSTEEL STIRRUP(LOOP REINF.)BAR WELDED TO ANGLE80 x 80 x 8 x 2000mm L

3 Y12

STIRRUP DETAIL

NOTES



AMENDMENT NUMBER:

DRAWN BY:

DRAWING CHECKED BY:


DESIGNED BY:


CHECKED BY:


LEGEND

JRA-SDSWM-003

SCALE AS SHOWN: NTS

DATE: 17/09/2014



SLAB DETAILS


2. ALL REINFORCING BARS INPRECAST COVER SLABS TO BEDEFORMED HIGH TENSILE STEEL.

3. ALL PRECAST COVER SLABS TOBE BRUSH FINISHED.

4. ANGLE IRON TO BE PAINTED WITHRED OXIDE UNDERCOAT ANDBLACK ENAMEL PAINT AS FINALCOAT.

5. ANGLE FACE ON SLAB "B" TOFACE ROADWAY.

300MAX.

150

1000

1000

1310

1310

25 COVER

150

75 230 1200 230 75

230 VARIES = MIN. 1200 230

230

min

. 900

230

60 degMAX.

4 Y12 @ 110 c/c

2 Y16

4 Y12 @ 110 c/c

4 Y12 @ 110 c/c

2 Y16

4 Y12 @ 110 c/c

ROADS)


BRICKWORK ORPRECAST SHAFT (750mm)


ROADWAY

M.H. COVER AND FRAME TOSABS 558 (TYPE 6 IN SIDEWALKSAND STANDS - TYPE 2A IN

STEP IRONS TO BS 1247AT 300c/c, STAGGERED

230mm BRICKWALL

600x600 SHAFT230 230

MIN

. 900

IN R

OA

DS

1200

SECTION THROUGH MANHOLE WITH SHAFT


SECTIONAL PLAN

REINFORCEMENT DETAIL FOR COVER SLAB



AMENDMENT NUMBER:

DRAWN BY:

DRAWING CHECKED BY:


DESIGNED BY:


CHECKED BY:


LEGEND

NOTES

JRA-SDSWM-004

SCALE AS SHOWN: NTS

DATE: 17/09/2014



MANHOLE DETAILS

1. CONCRETE STRENGTH TO BE ASFOLLOWS:a. MANHOLE SURROUNDS AND

BENCHING: CLASS 15/19b. CAST IN-SITU DECK SLABS

AND FOUNDATION: CLASS 20/19

c. PRECAST COVER SLABS ANDOTHER ITEMS: CLASS 25/19

d. CAST IN-SITU KERBS, APRONSETC.: CLASS 25/19

2. ALL FLOORS AND BENCHING TOBE STEEL TROWELLED WITH ASMOOTH RADIUS.

3. ALL BRICKS TO BE OF QUALITYFBSE 30 TO SANS 227-2007, WITHWATER ABSORPTION < 14% ANDEFFLORESCENCE <10.


5. MANHOLE AND KERB INLETSWIDTHS AND DEPTH:a. WIDTH:-

750 mm PIPES AND LESS -900mm825 mm PIPES AND MORE -1200mm .

b. SOME JUNCTION MANHOLESIZES TO BE DETERMINED ONSITE

c. DEPTH:-THE DEPTH INDICATEDSHOULD BE INCREASED IFNECESSARY FOR ANGLE ANDJUNCTION MANHOLES TOPERMIT SUFFICIENTDISCHARGE HEAD TODEVELOP.

d. MANHOLE DEPTH > 1,75m,WIDTH OF BRICKWORK TO BEINCREASED TO 330mm.

20mm COVER

TYPE K.I. (B)

STORMWATER

STORMWATER

3R10-02-1802R20-01-100 2R20-01-150

SECTION B-BEXISTING CHANNEL

SEE DETAIL (JRA-SD-SW-M006)

13R10-03-160

3R10-02-1802R20-01-100

PLAN OF KERB INTAKE TOP

2R20-01-150 25 mm COVER

A

A

B B

C C

50 50 50 50

990 990

50 50 50 50

940 940

1980

15mm RAD. NOSING

90

1980

20m

m C

OV

ER

13R10-03+160

28

15mm END COVER

25mm COVER

15mm END COVER

SHAPELENGTHDIAMETERBAR MARK

STEEL FOR SLAB TOP

No. OFF

TYPE K.I. (A)

STRAIGHT1950

STRAIGHT1050

STRAIGHT1950

R20

R10

R10

401

1303

02 3

75 100 180 360 180 150 25mm COVER

1070

20m

m C

OV

ER

25mm COVER 25mm COVER

50 50

1070

7565

5070

15mm END COVER

457

315

70237 597 236,5

315

BUILT UP TO REQUIREDELEVATION WITH MORTAR

BUILT UP TO REQUIREDELEVATION WITH MORTAR

CLEARANCE HOLESTO BE DRILLED FOR10 BOLT

100 x 50 x 11 kg/mSTEEL CHANNEL

SEE DETAIL(JRA-SD-SW-M006)

100 x 50 mm x 11 kg/mSTEEL CHANNEL IRON

EVERY SECOND BARWELDED TO CHANNEL

PIPE SUPPORT INPLACE OF END WALL

PLAN ON C-C ON CHANNEL TO SHOW DRILLING FOR EXTENSION UNIT

SECTION C-C

BENDING SCHEDULE

SECTION A-A

EXTENSIONS TO BE AFFECTED ASSHOWN ABOVE FOR BOTH TYPESSECTION Z-Z

FRONT ELEVATION


Drawing Sub-set

SCALE AS SHOWN: NTS


AMENDMENT NUMBER:

DRAWN BY:

DRAWING CHECKED BY:


DESIGNED BY:


CHECKED BY:


LEGEND

NOTES

DATE: 17/09/2014

JRA-SDSWM-005


JOHANNESBURG SW STRUCTURES FOR MAINTENANCE PURPOSES (SHEET 1 OF 6)

DETAILS OF PRECAST COVER SLABS FOR WIDE TYPE KERB INLETS

MOUNTABLE KERBBARRIER KERBKERB INLET

M.K.B.K.K.I.

1. ALL BRICKS TO BE OF QUALITYFBSE 30 TO SANS 227-2007 WITHWATER ABSORPTION <14% ANDEFFLORESCENCE <10.


3. CONCRETE TO BE CLASS 20/19.4. MINIMUM END COVER 15mm.

535

535

990990

PLAN OF KERB INTAKE TOP WITH MANHOLE

610

457

4R10-03-190

3R10-02-180

R10-04

3R20-01-70

3R20-013R10-02-180

Z

Z

X

Y

X

Y

15 mm ENDCOVER

25 mm COVER

4R10-03-190

100 x 50 mm x 11 kg/mSTEEL CHANNEL IRONEVERY SECOND BARWELDED TO CHANNEL

DAYLIGHT OPENINGSANS 558-1973,MANHOLE TYPE 9-D

25 mm COVER

R20-02

R20-03

15 mm END COVER

13R10-04-160

4R20-05-180R10-01

25 mm COVER

190

A

A

B BEVERY SECOND BARWELDED TO CHANNEL

100 x 50 mm x 11 kg/mSTEEL CHANNEL IRON

PLAN OF TAPERED KERB INTAKE SLAB

315

990990

50

C C

505050

DRILLED FOR10Ø BOLT

PIPE SUPPORTSEE DETAIL

100 x 50 x 11 kg/mSTEEL CHANNEL

FRONT ELEVATION

0503 05

25mm COVER100

1070

13R10-04-160

75

180

01050502

180 180 180

15 mm RAD.NOSING100 x 50 mm x 11 kg/m

STEEL CHANNEL IRON

SECTION A-A25mm COVER

25mm COVER

LC

20 mm COVER

15mm END COVER

901980

02

13R10-04-16025mm COVER

20 mm COVER

90375

SABS 558-1973MANHOLE TYPE 9-D

375

1980

4R10-03-1904R10-03-19025mm COVER

15 mm RAD.NOSING

SECTION B-B

15 mm RAD.NOSING

SECTION X-X

SECTION Y-Y

15 mm RAD.NOSING

115

6

90

286

100

66

315

6

115

6115 x 230 x 12 mm

50

M10 BOLTS

50

20mm COVER

230

100

6

6

150 x 55 x 6 mm

50

NUTS TO BE WELDED TOCHANNEL (NUTS TO BECOVERED WITH POLYTHENEBEFORE CASTING)

43 mm STEEL PIPE 3,2 mmWALL THICKNESS

DETAIL OF PIPE SUPPORT

STRAIGHT

SHAPE

STRAIGHT

STRAIGHT

1950

1050

585

R20

DIAMETER

01

BAR MARK

STEEL FOR SLAB TOP

6

No. OFF

R1003 8

R1002 6

TYPE K.I. (B)

LENGTH

STRAIGHT200R1004 1

STRAIGHT

SHAPE

STRAIGHT

STRAIGHT

2050

1870

1950

R10

DIAMETER

01

BAR MARK

STEEL FOR SLAB TOP

1

No. OFF

R2003 1

R2002 1

TYPE K.I. (C)

LENGTH

STRAIGHT140+75 TO 1040R1004 13

STRAIGHT330+380 TO 1470R1005 4

BENDING SCHEDULES


Drawing Sub-set

SCALE AS SHOWN: NTS


AMENDMENT NUMBER:

DRAWN BY:

DRAWING CHECKED BY:


DESIGNED BY:


CHECKED BY:


LEGEND

NOTES

DATE: 17/09/2014

JRA-SDSWM-006



DETAILS OF PRECAST COVER SLABS FOR WIDE TYPE KERB INLETS


M.K.B.K.K.I.

230

610

230

BARRIER KERB SECTIONBENCHING

FLOW

A

BENCHING

M.H. COVER

PRECAST COVER SLABS

M.H. COVERPRECAST COVER SLABS

C

C

A1 & A2

C

C

C

C

400

1070

23023012

030

0

140

90

TO S

UIT

PIP

E

750m

m M

AX

120

300

150

610

90

TO S

UIT

PIP

E

A1 & A2A

10 m8 m

8105 10 095

96357645

4 m2 m

41102105

3650

6 m

6100

56401645CHAMBER INSIDE OPENING:

CHAMBER OVERALL:

3

COVERS OVERALL SPEC SIZE:

EDGE OF WEARING SURFACE

FLOW

1

CONCRETE INFILL

2

D

D

BENCHING

D

D2

DD

2D

1D

1

D1

& D

2

D

D1

& D

2

D

B1 & B2B B1 & B2 BDETAIL "X"

610 MIN.TO SUIT PIPE

230

990 990

1980

400

230

610

MIN

.TO

SU

IT P

IPE

230

120

300

100mm MAX 100mm MAX

150

TO S

UIT

PIP

ES

510

90

230 230

100mm MAX100mm MAX

150

BARRIER KERBSECTION

CONCRETE IN FILL

TO SUIT BRICK SIZES100 mm MAX.

LENGTHS AS FOR COMBINATION TYPES

PLAIN COVER SLABS:1980mm EACH

COVER SLAB WITHMANHOLE 1980mm EACH

TO SUIT BRICK SIZES100 mm MAX.

OUTLET

PIPE

43 mm PILLARS ATMIDSPAN OF SLABS


PILLARS AT ENDS OF SLABS:43 mm STEEL OR 230 x 230mm BRICK.

INTERMEDIATE 43 mmSTEEL PILLARS

BARRIERKERBSECTION

PILLARS AT ENDS OF SLABS:43 mm STEEL OR 230 x 230mm BRICK.

PLANCOVER SLABS REMOVED

PRECAST COVER SLABSWITH MANHOLE 1980

mm EACHPRECAST COVER SLABS

1980 mm EACH

COVER TO PIPE ALONG LINE OF INLET (PIPE No.1) MORETHAN 750 mm (LOCAL SUMP) SEE ALSO SECTION A2-A2 IF

THERE IS NO PIPE ALONG THE LINE OF THE INLET.

SECTION B1-B1

PRECAST COVER SLABWITH MANHOLE 1980

mm EACHPRECAST COVER SLABS

1980 mm EACH

750

MA

X T

OS

UIT

PIP

E

SECTION B2-B2COVER TO PIPE ALONG LINE OF INLET (PIPE No.1) UP

TO 750 mm (CHAMBER AT DEPTH OF DRAIN).

SECTION A2-A2OUTLET PIPE MORE THAN 750 mm DEEP (LOCAL SUMP)

THIS SECTION ALSO APPLIES FOR COMBINATION TYPE INLET/MANHOLEWHERE THERE IS NO PIPE ALONG THE LINE OF THE INLET.

OUTLET PIPE UP TO 750 mm DEEPSECTION A1-A1

PLAN


Drawing Sub-set STORMWATER MAINTENANCE

SCALE AS SHOWN: NTS


AMENDMENT NUMBER:

DRAWN BY:

DRAWING CHECKED BY:


DESIGNED BY:


CHECKED BY:


LEGEND

NOTES

JOHANNESBURG SW STRUCTURES FOR MAINTENANCE PURPOSES (SHEET 3 OF 6)JRA-SD

DATE: 17/09/2014

SWM-007LAYOUT PLAN & SECTIONS - 1

1. FOR SECTIONS C-C & D-D, ANDDETAIL "X" REFER TO DRG,JRA-SD-SW-M008

2. ALL BRICKS TO BE OF QUALITYFBSE30 TO SANS 227-2007 WITHWATER ABSORPTION <14% ANDEFFLORESCENCE <10.


EXISTING KERB INLET

EDGE OF WEARING SURFACE(230 x 230 mm BRICK

400

DRAIN POSITION

BENCHING

PRECASTCOVER SLAB

1070

VA

RIE

S15

0

610

400

230

BENCHINGNORMAL

FOR PIPES UP TO 600 mm

400

FALL

KERB

FALL

KERB INLET1070

900

WEARING SURFACE

SECTION D2-D2

150

165

MIN

1900

1000

750m

m M

IN

230

PILLARS MAY BE USED AT

115100

400

THE ENDS OF SLABS.)Z

840400 230

300

100

FALL

400

VA

RIE

S15

0

230230 870 MAX

230230 610

L

L

PRECAST SLABS TYPE "A"SEE DRG. 700/20/3

400

VA

RIE

S

2% MIN FALL1070

230 610

400

230

120

Z

1980mm OR 3960mm

230

610

Y 1070

FLOW400

230

43 mm STEEL PILLARS

150

600

MA

X

CL DRAIN950

1070

Y

SECTION D2-D2 FOR PIPES675 mm TO 825 mm

CLASS 20/19CONCRETE

APRON & BASE15

0 M

inO

PE

NIN

G

SECTION C-C SECTION D1-D1

SECTION Z-Z

SECTION Y-Y

CLASS 20/19CONCRETE

GRANULARBEDDING

FALL WITHSIDEWALK

PROPOSED EXTENSION TOTO INLET ON UPSTREAM

SIDE ONLYEXISTING INLET

EXISTING END WALL TO BEDEMOLISHED DOWN TO 400 mm

PLAN - EXTENSION TO EXISTING KERB INLET

TYPICAL SECTION AT SUMPOFF CENTRE DRAIN

POSITION OF DRAIN C

100MIN

270MIN.

C PIPE

C DRAIN

230

90

SECTIONBARRIER KERB

450 Min

SLOPE 1 : 3 Min

25

BRICK WALLGUTTER

400

GU

TTE

R

150

5010

010

CLE

AR

OP

EN

ING

WEARINGSURFACE

110

M.K

.

155

B.K

.

75 x 100 x 10 mmSTEEL PLATE

1 : 3 MORTAR

STD. PRECAST COVER SLABDRG. JRA-SD-SW-M006

ON LINE AND AT GRADEOF TOP OF KERB

60 x 60 x 8 mm 180 mmLONG ANGLE IRONWELDED TO PIPE.

43 mm STEEL PIPE 3,2mm WALL THICKNESS250 mm LONG.

CLASS 20/19 CONCRETE TO BECAST AFTER THE KERB HASBEEN PLACED IN POSITION.

25 mm SLOPING FACE

OF BARRIER KERB.

KERB INLETCOVER SLAB PRECAST BARRIER KERB

BACK OF BARRIER KERB

BRICK WALL

KERB INLETCOVER SLAB

TYPICAL SECTION STEEL PILLAR, COVERSLAB, KERB POSITION

DETAIL X JUNCTION OF PRECAST KERB &KERB INLET

(SEE PLAN - JRA-SD-SW-M007)


Drawing Sub-set STORMWATER MAINTENANCE

SCALE AS SHOWN: NTS


AMENDMENT NUMBER:

DRAWN BY:

DRAWING CHECKED BY:


DESIGNED BY:


CHECKED BY:


LEGEND

NOTES

DATE: 17/09/2014

JRA-SDSWM-008

1. THE KERB INLETS ARE DETAILEDWITH THE COVER SLABSHORIZONTAL. LONGITUDINALLYALL K.I.'s MUST HOWEVER BECONSTRUCTED SO THAT THEFRONT TOP EDGE OF THE COVERSLAB IS ON THE LINE AND GRADEOF THE TOP REAR EDGE OF THEADJACENT KERBING.

2. COVER SLABS ARE TO SLOPETOWARDS THE ROAD ASSIDEWALKS. (MIN FALL 2%)

3. SIZES OF KERB INLETS ARESPECIFIED BY THE OVERALLLENGTH ON TOP IN MULTIPLESOF 2,0 m (UNIT COVER SLAB) -DESIGNERS ARE TO USE THERELATIVE OPENING LENGTHS ASTABULATED TO DETERMINE THECAPACITY OF THE INLET.

4. POSITION OF THE DRAIN IS TO BEDETERMINED BY SITECONDITIONS - IF THERE ARE NOOBSTRUCTIONS THE DRAINSHOULD BE PLACED AT 0,9 m TO1,0 m FROM THE EDGE OF THEWEARING SURFACE - SEE THEDIAGRAM ON THIS DRAWING.

5. PIPES BUILT INTO CHAMBERSAND SUMPS ARE TO BE CHIPPEDBACK UNTIL FLUSH WITH THEFACE OF THE WALL.

6. WALLS COULD BE CONSTRUCTEDOF CLASS 20/19 CONCRETE OF130 mm THICKNESS.

7. ALL BRICKS TO BE OF QUALITYFBSE30 TO SANS 227-2007 WITHWATER ABSORTION <14% ANDEFFLORESCENCE <10.


9. SPECIAL CONSIDERATIONS ARETO BE GIVEN TO PIPES OVER825mm.

OFF CENTRE DRAIN:

IDEAL POSITION:SEE SECTIONS C-C & D-D

SEE SECTION E-ESEPERATE KERB INLET / MANHOLEOR JUNCTION BOX TO BE CONSTRUCTED


LAYOUT PLAN & SECTIONS - 2

REFERENCE DRAWINGS: -

JRA-SD-SW-M007:-LAYOUT PLAN

JRA-SD-SW-M005 & SW-M006:-DETAILS OF PRECAST COVERSLABS FOR WIDE TYPE KERBINLETS.

JRA-SD-SW-M007:- DETAILS OF PRECAST SLABS FORUSE AT SUMPS, MANHOLES ANDJUNCTION BOXES.

JRA-SD-SW-M009 & SW-M010: - DETAILS OF NARROW TYPE KERBINLETS.DETAILS OF KERBING ANDTRANSITIONS TO INLETS.

JRA-SD-R005:-TYPICAL DETAILS OF KERBTRANSITIONS.


M.K.B.K.K.I.

100

TT

280

230

360

230

STEEL CHANNEL ALONG OPENINGCHAMBER INSIDE OPENING:

COVERS SPECIFIED SIZE:

TOP OF KERBS CHAMBER OVERALL:

32901530 5060 6940 8695

3600

3750

1800

1990

7200

7400

5400

5520

9000

9155

FLOW


FLOW

PRECAST BARRIER KERB

LCDRAIN

IDE

AL

LCDRAIN

D

D

B

B

EE

120

600

100 230

480 230

940

230

480

230

940

TO SUIT: 120 MAX

230

100

280

230

360

230

120

600

100

820

TO S

UIT

PIP

ES

230 230

400

375

1500

IDE

AL

230

FALL

L

VA

RIE

S

WEARING SURFACE

FALL

A A

CB

CB

FALL OF ROAD & GUTTER

375

100

100

230

500

550

150

105012

0

400 600 100

280 230 360 230

T T 120

VA

RIE

S150

100

90

400

T T 150

VA

RIE

S19

015

0

280230 480 230

T T

230 360

TT

120

CLDRAIN

F

B

B

GG

CLDRAINFALL OF ROAD & GUTTER

FLOW

230 120

150

630

420

1500

IDE

AL

375

400

230230

230

820

100

600

120

230

360

230

280

820

F

PRECAST BARRIERKERB

SECTION A-ATERMINAL KERB INLET

TO SUITEPIPES

LONGITUDINAL DIMENSIONS OF ALL KERBINLETS AS TABULATED FOR TERMINAL K.I.

PRECAST COVER SLABS600 x 1800 mm

TO S

UIT

PIP

ES

AS

DE

TER

MIN

ED

ON

SIT

E O

R A

S G

IVE

N O

NP

LAN

(SE

E N

OTE

3, D

RG

. JR

A-S

D-S

W-M

O10

)

ALTERNATIVE POSITION OFDRAIN IN ROAD SHOWN INHIDDEN LINES.

PRECASTBARRIER KERB

130 mm @ MOUNTABLE KERBS150 mm @ BARRIER KERBS

PLAN - TERMINAL KERB INLET

PLAN - COMBINATION KERB INLET / MANHOLECOVER TO MAIN DRAIN EXCEEDS 750 mm

PLAN - COMBINATION KERB INLET /MANHOLE COVER TO MAIN DRAIN LESS

THAN 750 mm

SECTION B-B

SECTION C-C

SECTION D-DSECTION E-E

AS

DE

TER

MIN

ED

ON

SIT

E O

R A

S G

IVE

N O

NP

LAN

(SE

E N

OTE

3, D

RG

. JR

A-S

D-S

W-M

010)

LONGITUDINAL DIMENSIONS OF ALL KERBINLETS AS TABULATED FOR TERMINAL K.I.

600 MINTO SUITE

PIPES

STEEL PILLARS@ 1800 mm C/CTO DETAIL.

450 mm Ø

OUTLET PIPE

COVER SLAB TO FALLTOWARDS ROAD: SAME ASSIDEWALK. MIN. 12 mm

600 x 1800 mm PRECASTCOVER SLAB100 x 50 mm CHANNELSTEEL PILLAR

SUBGRADE (ORSUBBASE)

CLASS 20/19CONCRETE

NO FINES CONCRETE ONUPSTREAM SIDE OR 2 x 50 mmDUCTS THROUGH BASE TO DRAINGRANULAR BEDDING.

BOTTOM OFTRENCH

PRECAST K.I.COVER SLABS

PRECAST K.I. COVER SLABSMANHOLE190 mm R.C. SLAB

1500 - SEE NOTE 3 (DRG.JRA-SD-SW-M010)

CLASS 20/19CONCRETE

WEARINGSURFACE

STD. PRECASTLINTEL

STEEL PILLARS@1800mm C/CTO DETAIL.

EDGE OF WEARING SURFACEFALL OF ROAD & GUTTER

1800mm PRECAST COVER SLABS

600 MIN

PRECAST BARRIER KERB

STEEL PILLARS @ 1800mm C/C TO DETAIL


CDRAIN



AMENDMENT NUMBER:

DRAWN BY:

DRAWING CHECKED BY:


DESIGNED BY:


CHECKED BY:


LEGEND

NOTES

JRA-SDSWM-009

SCALE AS SHOWN: NTS

DATE: 17/09/2014



LAYOUT PLANS & SECTIONS - 3

1. REFER ALSO TO DRG.JRA-SD-SW-M010

2. ALL BRICKWORK TO BE OFQUALITY FBSE30 TO SANS227-2007 WITH WATERABSORPTION <14% ANDEFFLORESCENCE <10.


4. FOR SECTIONS F-F & G-G REFERTO DRG. JRA-SD-SW-M010.

5. "T" INDICATES THICKNESS(130mm) OF WALLSCONSTRUCTED OF CLASS 20/19CONCRETE.

6. ALTERNATIVE POSITION OFDRAINS IN ROAD SHOWN INHIDDEN LINES.

KERB INLETK.I.

1500 - SEE NOTE 3

550

120

130

280

400

155

95

250

26

130

155

275

155

75

230

30

TT

600400

600

MIN

150

150

230360230

230

480

230

400

1800 1800

SPECIFIED KERB INLET

400

190

VA

RIE

S15

0

DRAIN CL

WEARING SURFACE FALL

OPENING


END BRICKED UP

SECTION H-H

PLAN

FLOW

PRECAST UNITS

SECTION J-J

STEEL PILLARSTANDARDPRECAST COVER

H H

J

J

80

MILD STEEL REINFORCEMENT

13520

100

60

260

115

115

30

70 70 80 130 130 80 40

95600400

STEEL PILLARTO DETAIL

PRECAST K.I. COVERSLABS MANHOLE

190 mm R.C.SLAB

STEP IRONSSTAGGERED

150

VA

RIE

S


PRECAST K.I.COVER SLABS


BOTTOM OFTRENCH

JOINTS NOT TO BEFILLED WITH MORTAR

STEEL CHANNEL ONCOVER SLAB NOT TOBE PLASTERED OVER.

BARRIER KERB ORTRANSITION (K) TOMOUNTABLE KERB

EXPOSED BRICKWORKTO BE PLASTERED.

PRECAST TAPERBARRIER KERB

TOP OF KERB & KERB INLET

OPENING

PRECAST UNITS FOR ILLUSTRATIONSHOWN AS 600 x 600 x 600 mm

IN-SITU CONSTRUCTEDBRICK SUMP

STANDARD 1800 x 600 mmPRECAST COVER SLABS TO DETAIL

ACCEPTABLE PRECASTCONCRETE UNITS

SEE NOTE ONBEARING (8b)

IN-SITU BENCHING ONGRADES FLATTER THAN 1:40

GRANULAR BEDDING ORCONCRETE SCREED CLASS 20/ 19

CONCRETE

600

MIN

NORMAL ARRANGEMENTAT BARRIER KERBS ARRANGEMENT AT BARRIER KERBS WHERE

INLET IS NOT SET BACK - SPECIALCIRCUMSTANCES

OPENING

60 x 60 x 8 mm ANGLE IRON,180 mm LONG

43 mm STEEL PIPE3,2mm WALL THICKNESS


DETAILS OF STEEL PILLAR FOR USE ONPRECAST UNITS

140m

mO

PE

NIN

GA

T P

ILLA

R

100 x 50 mm x 10,6 kg/mSTEEL CHANNELON LINE & GRADEOF TOP OF KERB

60 x 60 x 8mmANGLE IRON,180 mm LONG

NORMAL ARRANGEMENT AT MOUNTABLE KERBS

SUBGRADE(OR SUBBASE)

CLASS 20\ 19CONCRETE

R10 BARS @ 200 C/CWELDED TO CHANNEL

C R10 BARSL

135 x 20 mmANTI-SHIFT RECESS

250m

m L

ON

G P

ILLA

R

15 ENDCOVER

130m

mO

PE

NIN

G

100 x 200 x 10 mmMS BASEPLATE

43 mm [ STEEL PIPE3,2 mm WALLTHICKNESS

15 mm COVER

SECTION F-F

FRONT ELEVATION OF KERB INLET

SECTION G-G

CLASS 20/ 19CONCRETE


43 mm STEEL PIPE3,2mm WALL THICKNESS


DETAILS OF STEEL PILLAR FOR USE ONPRECAST UNITS

140m

mO

PE

NIN

GA

T P

ILLA

R

80

MILD STEEL REINFORCEMENT

13520

100

60

260

115

115

30

70 70 80 130 130 80 40

95600400

100 x 50 mm x 10,6 kg/mSTEEL CHANNELON LINE & GRADEOF TOP OF KERB

60 x 60 x 8mmANGLE IRON,180 mm LONG

NORMAL ARRANGEMENT AT MOUNTABLE KERBS

SUBGRADE(OR SUBBASE)

CLASS 20\ 19CONCRETE

R10 BARS @ 200 C/CWELDED TO CHANNEL

C R10 BARSL

135 x 20 mmANTI-SHIFT RECESS

250m

m L

ON

G P

ILLA

R

15 ENDCOVER

130m

mO

PE

NIN

G

100 x 200 x 10 mmMS BASEPLATE

43 mm [ STEEL PIPE3,2 mm WALLTHICKNESS

15 mm COVER



AMENDMENT NUMBER:

DRAWN BY:

DRAWING CHECKED BY:


DESIGNED BY:


CHECKED BY:


LEGEND

NOTES

JRA-SDSWM-010

SCALE AS SHOWN: NTS

DATE: 17/09/2014



ADDITIONAL SECTION DETAILS

1. FOR LAYOUT PLANS REFER TODRG. JRA-SD-SW-M009

2. COVER SLABS TO SLOPETOWARDS ROAD AS SIDEWALK -MIN FALL 2%

3. SIZES OF INLETS ARE TO BESPECIFIED BY THE OVERALLLENGTH ON TOP IN MULTIPILES OF1,8m (UNIT COVER SLAB).DESIGNERS ARE TO USE THERELATIVE OPENING LENGTHS ASTABULATED TO DETERMINE THECAPACITY OF THE INLET.

4. POSITION OF DRAIN TO BEDETERMINED BY SITE CONDITIONS.IF NO OBSTRUCTIONS EXIST,DRAIN IS TO BE LOCATED AT 1,5mFROM EDGE OF WEARINGSURFACE. WHERE DRAIN IS MORETHAN 2,0m FROM EDGE OFWEARING SURFACE SEPERATEKERB INLETS AND MANHOLES ARETO BE CONSTRUCTED.

5. CONCRETE QUALITY REFERED TOAS SPECIFIED IN THE"CONSTRUCTION OF TOWNSHIPROADS - GENERALSPECIFICATION."

6. PIPES BUILT INTO CHAMBERS ANDSUMPS ARE TO BE CHIPPED BACKUNTIL FLUSH 5. WITH THE FACE OFTHE WALL.

7. WALLS COULD BE CONSTRUCTEDOF CLASS 20/19 CONCRETE OFTHICKNESS T=130 mm

8. PRECAST UNITS MANUFACTUREDCOMMERCIALLY MAY BE USED IFAPPROVED.

a. STANDARD COVER SLABS (600 x1200 x 90 mm) CAN BE USED.

b. SUMPS ARE TO BECONSTRUCTED & LOCATED INSUCH A WAY THAT THE PRECAST UNITS ABOVE HAVEADEQUATE BEARING AT ALLCORNERS.

c. PRECAST UNITS ARE TO BESUITABLY BEDDED.

d. A SLOPE OF 1:40 min. IS TO BEPROVIDED IN THE CHANNEL eg. -BY BENCHING.

9. COVER SLABS ARE TO BEREMOVABLE & ARE NOT TO BEJOINED WITH MORTAR.

10. ALL BRICKS TO BE OF QUALITYFBSE30 TO SANS 227-2007 WITHWATER ABSORPTION <14% ANDEFFLORESCENCE <10.1

11. ALL BRICKWORK TO BE IN ENGLISHBOND.

2.4 STORMWATER: RETAINING WALLS/ SUB SOIL DRAINAGE

2.4

ST

OR

MW

AT

ER

:

RE

TA

ININ

G W

AL

LS

/ S

UB

SO

IL D

RA

INA

GE

2.4 STORMWATER: RETAINING WALLS/ SUB SOIL DRAINAGE



REVISION DATE JRA-SD-SSD-001 Details of Brick Retaining Wall with Subsoil Drain (JRA-SD-G001) 300615 JRA-SD-SSD-002 Concrete Details of Concrete Retaining Wall with Subsoil Drain (JRA-SD-G002) 300615 JRA-SD-SSD-003 Reinforcement for Concrete Retaining Wall (JRA-SD-G003) 300615

H A B C D E F G L T

1500

900

1500

1800

2100

230

230

230

230

340

110

110

0

0

0

0

0

0

0

0 0

0

0

0

110

230

230

230

350

350

470 3200

3000

2500

900

900

1500

1500

1500

300

600 300

0

600

0 0

0

0

0

1000

900

700

700

500 200

250

250

250

250

HEIGHTOF

WALL

WALLTHICKNESS

PIERPROJECTION

PIERWIDTH

PIERSPACING WALL HEIGHT FOUNDATION

DIMENSIONS

SUBSOIL DRAIN(SEE DETAIL)

CLASS 20/49 CONCRETEFOUNDATION

WEEPHOLE (75mm [ MIN.)

= PIER PROJECTION

FINAL G.L

PIE

R

F.G.L

CLAY BRICK RETAINING WALL

DETAIL OF SUBSOIL DRAIN

SYNTHETICFILTER,KAYMAT U14 ORSIMILAR

PERFORATED SUBSOILDRAIN PIPE IF REQUIRED

19mm STONE

B A C D

H

FE

L

TG

300

300

ALTERNATIVE POSITIONFOR SUBSOIL DRAIN

ALIGNED TO WEEPHOLES



AMENDMENT NUMBER:

DRAWN BY:

DRAWING CHECKED BY:


DESIGNED BY:


CHECKED BY:


LEGEND

NOTES

JRA-SDSSD-001

SCALE AS SHOWN: NTS

DATE: 29/01/2015

DETAILS OF BRICK RETAINING WALL

STORMWATER: RETAINING WALLS/SUB-SOIL DRAINAGE

NOTES:1. MORTAR TO BE CLASS II AND

MUST CONFORM TO SANS10164-1980.

2. THE GROUND OR FILL BEHINDTHE RETAINING WALL MUST NOTBE SUBJECTED TOSUPERIMPOSED LOADS SUCH ASTRAFFIC OR SURCHARGE OFFILL WITHIN A DISTANCE EQUALTO THE HEIGHT OF THE WALL.

3. MOVEMENT JOINTS SHALL BEPROVIDED AT DISTANCES NOTEXCEEDING 10m.

4. SUBSOIL DRAINS SHALL BEPROVIDED BEHIND THERETAINING WALL.

5. WEEP HOLES THROUGH THEWALL SHALL BE PROVIDED ATTHE BOTTOM OF THE WALL AT2m SPACINGS.

6. NO DAMP PROOF COURSE OROTHER SHEET MATERIAL SHALLBE USED IN ANY RETAININGWALL.

7. BRICKFORCE MUST BEPROVIDED IN WALL EVERYTHIRD COURSE.

8. WALL TIES MUST BE PROVIDEDBETWEEN WALL AND PIEREVERY THIRD COURSE.

9. ALL BRICKS TO BE OF QUALITYFBSE30 TO SANS 227-2007 WITHWATER ABSORTION <14% ANDEFFLORESCENE <10%.


11. SUBJECT TO SPECIFIC SITECONDITIONS THE SUBSOIL DRAINPIPE MAY BE OMITTED. THE19mm STONE WILL BE THE DRAINMEDIUM.

12. THE DRAIN MAY BE RAISED TOALIGN WITH THE WEEPHOLES.

13. ALL DESIGNS TO BE CERTIFIEDBY A PROFESSIONAL ENGINEER.

DETAIL OF SUBSOIL DRAIN

SYNTHETICFILTER,KAYMATU14 OR SIMILAR

SUBSOIL DRAIN PIPEAS SPECIFIED

19mm STONE

300

300

25 MPa CONCRETEFOUNDATION

NGL

FGL

SUBSOIL DRAIN(SEE DETAIL)

WEEPHOLE (75mmØ MIN.)

TYPICAL SECTION

W

T

200

200

DH

H T W D

2200

1700

2800

175

200

250 2200

1700

1300 250

250

300

HEIGHTOF

WALL

WALLTHICKNESS

FOUNDATIONDIMENSIONS

RETAINING WALLDIMENSIONS IN mm



AMENDMENT NUMBER:

DRAWN BY:

DRAWING CHECKED BY:


DESIGNED BY:


CHECKED BY:


LEGEND

NOTES

JRA-SDSSD-002

SCALE AS SHOWN: NTS

DATE: 29/01/2015


CONCRETE DETAILS OF CONCRETE RETAINING WALLFOR INTERNAL USE ONLY

NOTES:1. THE GROUND OR FILL BEHIND

THE RETAINING WALL MUSTNOT BE SUBJECTED TOSUPERIMPOSED LOAD SUCHAS TRAFFIC OR SURCHARGE OFFILL WITHIN A DISTANCEEQUAL TO THE HEIGHT OF THEWALL.

2. MOVEMENT JOINTS SHALL BEPROVIDED AT DISTANCESNOT EXCEEDING 10m.

3. SUBSOIL DRAINS SHALL BEPROVIDED BEHIND THERETAINING WALL.

4. WEEPHOLES THROUGH THEWALL SHALL BE PROVIDED ATTHE BOTTOM OF THE WALL AT2m SPACINGS.


6. ALL CONCRETE TO HAVE ASMOOTH FINISH WITH 25 x 25CHAMFERS ON ALL EXPOSEDEDGES.

7. ALL WORK TO BE ACCORDING TOSANS 1200 SPECIFICATIONS.

8. FOR REINFORCEMENT SEEDRG.JRA-SD-SSD-003.


4141

RE

TAIN

ING

WA

LL T

YP

E A

H =

280

0mm

24502450120099009900120030085027502750

38383720203785833737 150

150350100300

300200200 2100

2100900

90016019026502650

60150

34412030342016414134

Y12Y12

34412030342016414134

1111111111

R8R12Y12Y10

Y10Y10Y10

Y10

10090807060504030201

MEMBER

RE

TAIN

ING

WA

LL T

YP

E B

H =

220

0mm

RE

TAIN

ING

WA

LL T

YP

E C

H =

170

0mm

414243444546474849

Y10Y10Y10Y10Y10

Y10Y10Y10

R8

111111111

414141341020343414

50 R10 1 20

60

150140

1550700110

12007001200155070

150250150

10025070

30083203737852038373837

20143434201034414141

900990016009503009900150095015001600

Mk. R/YDia.

No.ofMemb.

No.ineach

TotalNumb.

CuttingLength

ShapeCode A B C D E or r

21222324252627282930

Y10Y10Y10Y10Y10Y10Y10Y10

R10R8

1111111111

14164134342020

41413414164134342020 150

6014010520507002050

16007001600150

250150

10025010010035083

853737372020383738

950300215095021509900990019009501900

34

RETAINING WALL TYPE CH = 1700mm

34Y10-27-300 41Y10-21-250 T1

34Y10-23-300 B1

33Y10-28-300

20R8-29-100

41Y10-26-250

41Y10-22-250

R10-30-1000

8Y10

-25-

300I

F

8Y10

-25-

300

OF

7Y10-24-300 B27Y10-24-300 T2

41Y10-41-250

41Y10-43-25041Y10-42-250 T1

20R10-50-1000

34Y10-44-300 B1

34Y10-47-300

34Y10-48-300

20R8-46-1000

8Y10-04-300 B2

8Y10-04-300 T2

10Y

10-0

5-30

0 IF

10Y

10-0

5-30

0 O

F

34Y10-01-300 B1

41Y12-02-250 T1

R12-08-1000

41Y12-03-250

41Y12-09-250

34Y10-06-300

30R8-07-1000

34Y10-10-300

5Y10-45-300 B2

5Y10-45-300 T2

7Y10

-49-

300

IF

7Y10

-49-

300

OF

RETAINING WALL TYPE BH = 2200mm

RETAINING WALL TYPE AH = 2800mm



AMENDMENT NUMBER:

DRAWN BY:

DRAWING CHECKED BY:


DESIGNED BY:


CHECKED BY:


LEGEND

NOTES

JRA-SDSSD-003

SCALE AS SHOWN: NTS

DATE: 30/01/2015

REINFORCEMENT FOR CONCRETE RETAINING WALL


NOTES:1. FOR CONCRETE DETAILS REFER

TO JRA-SD-SSD-002.2. THIS BENDING SCHEDULE IS FOR

A 10000mm RETAINING WALLONLY.

3. CONCRETE COVER TOREINFORCEMENT TO BE ASFOLLOWS:

-WALLS: 25mm-FOUNDATION: 40mm.


Directors: Chairman: K Shubane. Managing Director: D S Macozoma. Non-Executive Directors:

M Miamane. Dr J Maina. E. Ngomane. L Masamaife. J Nxumalo. H Mashele Company Secretary: Adv. T P Bokako

Registration No. 2000/028993/07

66 Sauer Street, Johannesburg, 2000 JRA, Private Bag X70, Braamfontein, 2017 Tel: (011) 298-5000 Fax:(011) 298-5178 www.jra.org.za

johannesburg roads agency soc limited (jra) · • section 2.4: retaining walls/ sub soil drainage....

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