GABION HEADWALL

PLAN OF STONE PITCHED HEADWALLSECTION A - A

FRONT ELEVATION OF STONE

PITCHED HEADWALL

Mattress

2,0m x 1,0m x 0,5m

For angled wingwall cut

end of Gabion and wire

adjoining Gabion

together as per plan.

Where necessary install Gabion :

a) Wingwalls ie. ( 1,0m x 1,0m x 0,5m )

b) Mattress ie. ( 1,0m x 1,0m x 0,2m )

under outlet to prevent scour.

1. Generally gabion mattresses are recommended in catchment

areas of less than 3ha for headwalls and wingwalls

but where more stability is required use

baskets ( 2,0m x 1,0m x 1,0m ).

edge and are to be backfilled on the road side by

3. Under damp conditions the use of filter fabric behind

earth or gravel layers.

the gabion is recommended.

Cast in-situ concrete

cut off wall ( 20MPa )

Grass sodding or stone

pitching where required.

Pipe Culvert

150

600

300

150

400 400

Stone pitching to be grouted

with 1 : 5 cement : sand mortar

150

600

1000 min B

150

Grass sodding or

stone pitching

where required

Stone pitched or gabion headwalls are

to be used in conjunction with pipe

where specified.

1800

Minimum projection = 1000

Stone pitching to be

grouted with 1 : 5

cement : sand mortar.

600m

m P

ipe

Stone pitching to be grouted

with 1 : 5 cement : sand mortar

600

Pipe Culvert

75

1400

Grass sodding or stone

pitching where required.

150

1800

A

A

A

A

600

NOTE

culvert up to a maximum size of 600

NOTES :

2. Gabion headwalls are to be laid parallel to the road

SCALES

CHECKED

DRAWN

CHECKED

DESIGNED

RESPONSIBLE PERSON DATE

08-06-2020

DRAWING TITLE SHEET SIZE

REVISION

REV DATE DESCRIPTION BY CHK

DRAWING NUMBER06/200 FOR TENDER DG VM

Ziinzame Consulting

Engineers (Pty) Ltd.

Reg No. 2013/054699/07

25 Falcon Street

Southernwood

Mthatha

5099

e-mail: admin@ziinzame.co.za

Tel (047) 531 0269

Fax (047) 531 0269

V.GUBEKA

T.NGCONGO

D.GENGAN

V.MWAFUKA

08-06-2020

08-06-2020

08-06-2020

0

A3

PRJ 067-FT-010

NTAKAMA ACCESS ROAD

600mmØ PIPE CULVERT HEADWALLS

(CONCRETE) (GABION / PITCHED)

FILL CONDITION

CUT CONDITION

4m GABION RETAINING WALL

TYPICAL SIDE ELEVATION IN FILL CONDITION ( 4,0m WALL )

3m GABION RETAINING WALL

3m GABION RETAINING WALL

4m GABION RETAINING WALL

500 1 000

N

a

t

u

r

a

l

g

r

o

u

n

d

l

i

n

e

1 000

1 000

1 000

500

min.

Foundation to

be levelled.

1 500

Geotextile fabric only

required in very sandy

material.

Each application of gabion boxes

shall be designed by the planning or

bridge Engineer to suit the specific

conditions prevailing.

2. Foundations to be stepped and prepared

as instructed by the Engineer.

3. Geotextile fabric to be grade C or similar

as instructed by the Engineer.

galvanised in accordance with the provisions S.A.B.S. 1580:1993

for Class A heavy galvanised mild-steel wire.

5. The standard sizes of gabions are as follows :

Width : 1,0m 1,5m.

Length : 1,0m , 2,0m , 3,0m & 4,0m

Depth : 0,5m & 1,0m

Diaphragm spacing : 1,0m

6. Lacing and bracing to be done in accordance with

manufactures recommendations.

Depth of gabion

(m)

Nominal mesh

dimensions (mm)

Nominal wire

diameter (mm)

Cross

dimension

Long

dimension

Exceeding b lNot Mesh wire Selvedge

exceeding

Tolerances: Tolerances:

-2

+

-25

- 0,3 80 100 2,5 3,0

3,42,7100801,00,3

( As per SABS 1580 / 1993 )

Rock size according to

the largest dimension of rockDepth of

cage (m)

Minimum

(mm)

Maximum

(mm)

0,2

0,3

0,5

1,0

100

100

100

100

125

200

250

250

Nominal diameter of wireMinimum

mm

mass of zinc

coating per

unit area ( g/m )

Exceeding

exceeding

260

275

290

2,50

3,50

5,00

2,40

2,51

3,51

( As per SABS 1580 / 1993 )

1

0

0

0

1

0

0

0

1

0

0

0

1

0

0

0

m

in

.

1

0

0

0

5

0

0

Theoretical shoulder

breakpoint

N

a

t

u

r

a

l

g

r

o

u

n

d

l

i

n

e

10

Geotextile fabric

1

5

0

0

Guardrail as per SD 1101

Shoulder breakpoint

175

1

0

0

0

1

0

0

0

1

0

0

0

1

0

0

0

3939

1

0

0

0

. m

in

.

985

2

0

0

0

Scale 1 : 50

Geotextile fabric

10

gabion boxes

Scale 1 : 50

N

a

t

u

r

a

l

g

r

o

u

n

d

l

i

n

e

gabion boxes

Geotextile fabric only

required in very sandy

material.

2 000

Foundation to

be levelled.

1 000

500.

min.

1 000

1 000

1 000

Scale 1 : 50

Shoulder breakpoint

Scale 1 : 200

985

min

175

Scale 1 : 50

Gabion baskets

Natural ground line

3939

NOTES:

1. The gabion design shown is typical.

+5

Not

2

4. All wire used in the making of gabions shall be

SCALES

CHECKED

DRAWN

CHECKED

DESIGNED

RESPONSIBLE PERSON DATE

08-06-2020

DRAWING TITLE SHEET SIZE

REVISION

REV DATE DESCRIPTION BY CHK

DRAWING NUMBER06/200 FOR TENDER DG VM

Ziinzame Consulting

Engineers (Pty) Ltd.

Reg No. 2013/054699/07

25 Falcon Street

Southernwood

Mthatha

5099

e-mail: admin@ziinzame.co.za

Tel (047) 531 0269

Fax (047) 531 0269

V.GUBEKA

T.NGCONGO

D.GENGAN

V.MWAFUKA

08-06-2020

08-06-2020

08-06-2020

0

A3

PRJ 067-FT-011

NTAKAMA ACCESS ROAD

GABION RETAINING WALL

GROUND MOUNTED GORE SIGN

TYPICAL SIGNPOSTING ERECTION DIMENSIONS

SINGLE GROUND MOUNTED SIGN

TYPICAL SIGNPOSTING ERECTION DIMENSIONS

REGULATORY AND WARNING SIGN

GROUND MOUNTED SHOULDER SIGN

GROUND MOUNTED GORE SIGNTYPICAL SIGNPOSTING ERECTION DIMENSIONS

T - JUNCTION BOX

2. Ground mounted shoulder signs :

2 200mm is minimum - 2 200mm to 2 400mm is desirable for height clearance.

1 800mm is minimum from edge of shoulder.

3. Ground mounted gore signs :

1 200mm is minimum - 1 800mm from edge of shoulder is desirable.

4. 3 degrees offset of signs to be adjusted to suit horizontal curves.

5. All signs to be in accordance with the latest South African Roads

Traffic Signs manual.

NOTES:

1800 ( min )

From Edge of Shoulder

Above shoulder

2200 to 2400

1800 ( min )

From Edge of Shoulder

Above S

houlder

2200 to 2400

Shoulder Ground Level

Gumbou

Brackets

R

a

k

e

r

Brackets

Gumbou

1200 ( m

in )

1 800

desirable

1 200

minimum

desirable

1 800

minimum

1 200

N.T.S

1 500

G

r

o

u

n

d

L

e

v

e

l

750m

( m

in )

1200 ( m

in )

1200 ( m

in )

G

r

o

u

n

d

L

e

v

e

l

Shoulder

Above shoulder

2200 to 2400

1800 ( min )

From Edge of

Shoulder

1200 ( m

in )

150

Shoulder

N.T.S

Exit

ram

p

Maxim

um 45m

Minim

um 15m

1200 ( m

in )

Edge of usable shoulder

Scale 1 : 50

1 800

3

3 050

160

Direction of traffic

Sign 1

G50H

Sign 2

Shoulder Level

2200 to 2400

Above S

houlder

Sign 1

Sign 2

G50H

ShoulderGround Level

Scale 1 : 50

2200 to 2400

Above S

houlder

From Edge of Shoulder

1800 ( min )

1200 ( m

in )

GA4

40 km/h

R50 Delmas

R21 Springs

R21 Benoni

ELEVATION

R50 Delmas R21 Benoni

PLAN

R21 Springs

60

2 2 2

1. Signs to be placed at the positions indicated on the design drawings.

Line square to centre line of roadway

to the traffic flow direction at 75mm and 600mm

above ground level, in all creosoted wooden

poles, to faciliate breakaway in the event of

impact.

NOTE :2 x 25m holes are to be drilled perpendicular

SCALES

CHECKED

DRAWN

CHECKED

DESIGNED

RESPONSIBLE PERSON DATE

08-06-2020

DRAWING TITLE SHEET SIZE

REVISION

REV DATE DESCRIPTION BY CHK

DRAWING NUMBER06/200 FOR TENDER DG VM

Ziinzame Consulting

Engineers (Pty) Ltd.

Reg No. 2013/054699/07

25 Falcon Street

Southernwood

Mthatha

5099

e-mail: admin@ziinzame.co.za

Tel (047) 531 0269

Fax (047) 531 0269

V.GUBEKA

T.NGCONGO

D.GENGAN

V.MWAFUKA

08-06-2020

08-06-2020

08-06-2020

0

A3

PRJ 067-FT-012

NTAKAMA ACCESS ROAD

POSITIONING OF SIGNS

SIDE ELEVATION

FRONT ELEVATION

PLAN

VIEW ON BACK ON SIGN PANNEL

PLAN

ELEVATION

END ELEVATION

FIXING OF STACK TYPE SIGNS

FIXING OF SIGNS OF 1 METRE AND

LESS ON ONE SUPPORT POLE

FIXING OF STOCK TYPE SIGNS ON SINGLE SUPPORT POLES

ELEVATION

END ELEVATION

PLAN

50

50

Varies

Stainless Steel

"Band - it" strapping used

to connect sign to pole.

Creosoted support poles

50

110 - 125

50 50

50

30 x 30 x 3mm

Angle iron

brackets

Poles to be

slotted for

(See Detail A)

angle iron

DETAIL A

50

5

50

110-125mm

Chromadeck

rivetted to

angle iron

Chromadeck

Pole to be slotted

for angle iron

12mm x 165 galavanised

bolt (cat.0451050) with

12mm galavanised washer

(cat.0481352)

Aluminium strap

nailed into pole

Slot cut

in pole

50 50

50

50

50

Varies

Varies

50

50

50

50

Varies

Varies

Stainless Steel

"Band - it" strapping used

to connect sign to pole.

Chromadeck

Sign

"Band-it"

strapping

Varies

7070

Varies

Slotted holes 24mm long at 70mm c/c

in top and bottom lips

A

A

W409

W409

50

Creosoted

support

poles

"Band-it"

strapping

Creosoted support poles

50

50

50

50

50

50

impact.

30 x 30 x 3mm

Angle iron bracket

rivetted to sign face

to the traffic flow direction at 75mm and 600mm

poles, to faciliate breakaway in the event of

Varies

150

Varies ( up to 1000 )

110-125

Varies ( up to 1000 )

Chromadeck

Sign

30 x 30 x 3mm Angle

to sign face

iron bracket rivetted

12mm x 165 galv. bolt

cat.0451050

12mm galv. washer

cat.0481352

Chromadeck

rivetted to

angle iron

slotted for

angle iron

Poles to be

Creosoted pole

110-125mm

150

Pole to be slotted

for angle iron

50

( 110 - 125 )

(4mm rivet)

(110 - 125 )

( 110 - 125 )

(4mm rivet)

above ground level, in all creosoted wooden

(4mm rivet)

2 x 25m holes are to be drilled perpendicularNOTE :

SCALES

CHECKED

DRAWN

CHECKED

DESIGNED

RESPONSIBLE PERSON DATE

08-06-2020

DRAWING TITLE SHEET SIZE

REVISION

REV DATE DESCRIPTION BY CHK

DRAWING NUMBER06/200 FOR TENDER DG VM

Ziinzame Consulting

Engineers (Pty) Ltd.

Reg No. 2013/054699/07

25 Falcon Street

Southernwood

Mthatha

5099

e-mail: admin@ziinzame.co.za

Tel (047) 531 0269

Fax (047) 531 0269

V.GUBEKA

T.NGCONGO

D.GENGAN

V.MWAFUKA

08-06-2020

08-06-2020

08-06-2020

0

A3

PRJ 067-FT-013

NTAKAMA ACCESS ROAD

ERECTION OF METAL SIGNS ON

CREOSOTED POLES

150mm GRAVEL WEARING COURSE

15

00

(DIAGRAMMATIC REPRESENTATION)

TYPE 7 BY ACCESS ROAD

FLOW

OF ROAD

C

FLOW

F

L

O

W

F

L

O

W

3900 ( EARTH WORKS )

450

C

1 : 1,5 MAX.

OF ROAD

CHAMBER

4% 4%

CHAMBER

1 : 3

FE

NC

E

3000

( CARRIAGEWAY )

450

1500

1 : 1,5 MAX.

FE

NC

E

10000 ( IF EXPROPRIATION IS NECESSARY )

(DIAGRAMMATIC REPRESENTATION)

PART PLAN OF ROAD

TYPICAL DETAIL OF EARTH DRAINS

150m INTERVALS OR AT INTERVALS

APPROPRIATE TO SITE CONDITIONS.

DRAINAGE DIVERTED AWAY FROM ROAD TO

ADJOINING PROPERTIES AT APPROXIMATELY

F

L

O

W

FLOW FLOWFLOW

F

L

O

W

IN SOME PLACES TO SUIT SITE CONDITIONS

ROAD MAY FALL IN ONE DIRECTION

4%

F

AL

L

4%

F

AL

L

5m WIDE ROAD

4%

F

AL

L

4%

F

AL

L

C

OF ROAD NOTE :

FLOW FLOWFLOW

150m INTERVALS OR AT INTERVALS

APPROPRIATE TO SITE CONDITIONS.

DRAINAGE DIVERTED AWAY FROM ROAD TO

ADJOINING PROPERTIES AT APPROXIMATELY

SCALES

CHECKED

DRAWN

CHECKED

DESIGNED

RESPONSIBLE PERSON DATE

08-06-2020

DRAWING TITLE SHEET SIZE

REVISION

REV DATE DESCRIPTION BY CHK

DRAWING NUMBER06/200 FOR TENDER DG VM

Ziinzame Consulting

Engineers (Pty) Ltd.

Reg No. 2013/054699/07

25 Falcon Street

Southernwood

Mthatha

5099

e-mail: admin@ziinzame.co.za

Tel (047) 531 0269

Fax (047) 531 0269

V.GUBEKA

T.NGCONGO

D.GENGAN

V.MWAFUKA

08-06-2020

08-06-2020

08-06-2020

0

A3

PRJ 067-FT-014

NTAKAMA ACCESS ROAD

TYPICAL PLAN AND SECTION OF ROAD AND

DRAINAGE