D-PI-175

NOTES
1-ALL DIMENSIONS ARE IN mm. UNLESS OTHERWISE STATED.
2-THE SPECIFIED PROTECTIVE COATING OF BURIED PIPELINES IS TO BE
CONTINUOUS AT ROAD CROSSING.
EXTENT OF COATING
5000 MIN.
HIGHWAY
C
L OF HIGHWAY
4000
MIN.
SPECIFIED MIN.
BEND RADIUS
(SEE NOTE "5")
SPECIFIED MIN.
BEND RADIUS
(SEE NOTE "5")
600
MIN.
START OF BEND
START OF BEND
2000
PIPE SUPPORT
MIN. COVER
(SEE NOTE"5")
COLD FIELD BEND
SPECIFIED MIN.
BEND RADIUS
(SEE NOTE "5")
A
8-CARRIER PIPE TO BE CONTINUED WITHOUT VERTICAL OR SIDE BENDS
IN PROPERTY LIMIT OR MINIMUM DISTANCE OF 5000mm.
10-BLINDING CONCRETE TO BE CLASS 1:4:8.
11-ALL REINFORCEMENT TO BE MILD STEEL.
12-ALL REINFORCEMENT TO HAVE 40 COVER.
BURIED PIPELINES
SPECIFIED MIN.
BEND RADIUS
(SEE NOTE "5")
13-DISTRIBUTION BARS FOR ALL CASES TO BE Ø 10 AT 250 c/c.
14-SAFETY BARRIER TO BE FABRICATED FROM 8"(DN200) PIPE
(OR OTHER AVAILABLE MATERIAL) AND SET IN CONCRETE. BARRIER
TO BE PAINTED BLACK AND WHITE AS SHOWN. BARRIER TO BE
LOCATED IN ACCORDANCE WITH INSTRUCTIONS OF THE ENGINEER.
B
500
350
PIPE OUTSIDE
DIAMETER
mk.b
(NOTE "15")
Ø10 AT 250 c/c
C
2000
500
MIN.
4000
100
(TYP.)
100 BLINDING CONCRETE
C
SECTION A-A
CULVERT DETAILS
4000
4000
=
=
THIS DWG. SUPERSEDES DWG. No.S4L-6502
SECTION B-B
1000
C
COMPACTED SELECT
FILL MATERIAL
mk.c
B
WARNING SLAB
BURIED PIPELINES
100
1" C.S. PIPE
C+20
mk.a
MKd
500
MIN.
COLD FIELD BEND
Ø10 E 150 c/c
150MIN.
MIN. COVER
(SEE NOTE "5")
SPECIFIED MIN.
BEND RADIUS
(SEE NOTE "5")
Ø16
CONCRETE COVER
mk.d
MKc
ROAD SURFACE
1500
150
B
mk.a
MKb
EXTENT OF ROAD SURFACE
500
A
C+20
3000
500
MIN.
PIPE SUPPORT
ABOVE GROUND PIPELINES
350
5000MIN.
(NOTE "8")
START OF BEND
START OF BEND
START OF BEND
500
MIN.
500
MIN.
500
MIN.
2000
WARNING SLAB
150
MKa
GROUND LEVEL
SPECIFIED MIN.
BEND RADIUS
(SEE NOTE "5")
100
7-BACKFILL OVER PIPE SHALL BE PLACED IN 150 LAYERS AND
PNEUMATICALLY TAMPED TO REACH THE DENSITY OF UNDISTURBED
SURROUNDING AND SURFACE MATERIAL SHALL BE RESTORED TO
THE SATISFACATION OF THE ENGINEER.
C
L OF SECONDARY ROAD
MIN.
SPECIFIED MIN.
BEND RADIUS
(SEE NOTE "5")
6-ABOVE GROUND PIPELINES TO BE COATED WITH CLASS A OR B
(REF. IPS-C-TP-274) PROTECTIVE COATING FOR THE COMPLETE
LENGTH OF THE CROSSING. THE COATING SHALL EXTENT FOR
AT LEAST 4 METERS FROM WHERE THE PIPELINE IS COMPLETELY
CLEAR OF THE GROUND.
15-THE SHAPES OF REFERED MK ARE AS FOLLOWS:
GROUND LEVEL
150
A
A
4000
5000MIN.
(NOTE "8")
SAFETY BARRIER
SEE DETAIL "B"
ROAD SURFACE
B
5-THE MINIMUM BEND RADIUS AND THE MINIMUM COVER ARE SPECIFIED
ON THE PROJECT DRAWINGS.
PIPELINE SIZE
NPS
DN
A
B
C
UP TO 12"
UP TO 300
1100
700
200
16" TO 20"
400 TO 500
1310
910
200
24" TO 26" 600 TO 650
30"
1460 1060
200
750
1670 1170
250
36"
900
1820 1320
250
42"
1050
2070 1470
300
48"
1200
2220 1620
300
1300 2020 1720
300
52"
56"
1400
2120 1820
300
60"
1500
1730 1930
300
REINFORCEMENT
Ø12 AT 250c/c MKa
Ø12 AT 250c/c MKb
Ø12 AT 250c/c MKc
4Ø16 STAG. MKd
GROUND LEVEL
500
SURFACE
C
4-ALL ROAD CROSSINGS SHOWN ON THIS DRAWING WILL BE
CONSTRUCTED BY CUT-AND-FILL METHOD. WHERE THIS METHOD
IS UNACCEPTABLE TO THE ROAD AUTHORITIES, THE CROSSING
MAY BE LAID IN THRUST BORED CASING AS DETAILED IN SHEET 2.
SURFACE AND
HARD SHOULDER
HIGHWAY
(SEE NOTE "6")
START OF BEND
5000
EXTENT OF ROAD
250MIN.
(NOTE "8")
EXTENT OF HIGHWAY
EXTENT OF COATING
C
L OF SECONDARY ROAD
Ø16
5000
9-CONCRETE TO BE OF 1:2:4 MIX WITH MINIMUM CUBE OF 210
kg/cm3 CRUSHING STRENGTH AT 28 DAYS.
SPECIFIED MIN.
BEND RADIUS
(SEE NOTE "5")
ABOVE GROUND PIPELINES
100
5000 MIN.
GROUND LEVEL
GROUND LEVEL
A
3-DOUBLE COAT AND DOUBLE WRAP SHALL BE APPLIED
AT ALL ABOVE GROUND/BURIDE PIPELINES ROAD CROSSING.
2000
(NOTE "8")
SAFETY BARRIER
SEE DETAIL "B"
600
MIN.
SURFACE AND
HARD SHOULDER
START OF BEND
5000
EXTENT OF HIGHWAY
(SEE NOTE "6")
START OF BEND
C
L OF HIGHWAY
500
SLAB
PIPELINE
Ø16 AT 250c/c MKa
Ø12 AT 250c/c MKb
Ø12 AT 220c/c MKc
4Ø20 STAG. MKd
Ø18 AT 200c/c MKa
Ø16 AT 200c/c MKb
Ø16 AT 200c/c MKc
4Ø20 STAG. MKd
Ø18 AT 200c/c MKa
Ø16 AT 200c/c MKb
Ø16 AT 200c/c MKc
4Ø20 STAG. MKd
(SEE NOTE "14")
C
B
A
REV.
DESCRIPTION
IRANIAN PETROLEUM STANDARDS
DATE
NO REVISION PERMITTED UNLESS APPROVED BY STANDARD ORGANIZATION
PIPELINE ROAD CROSSING
DETAIL "B"
MAJOR & SECONDARY ROAD CROSSING
TYPICAL SAFETY BARRIER
DATE
DRAWING No.
IPS-D-PI-175
SHEET
1
2
REV.
NOTES
HARD
DITCH
SHOULD
ER
T ROAD
C
L
ASPHAL
CASING
EXCAVATION
(SEE NOTE "5")
CONNECTED AT HIGH
END OF CASING
COMBINED POTENTIAL
SLOPE 1:20
450 SQ.x500 DEEP
CONCRETE BLOCK
GROUND LEVEL
BANDS & CLAMPS
B
MIN. COVER
900MIN.
600
1x10mm 2 PVC INSULATED
COPPER CABLE
A
INSULATORS
EQUALLY SPACED MAXIMUM SPACE TO BE 3000
CENTREING CRADLE
SEE DETAIL "B"
CENTREING CRADLE
NOTE "11"
"S" SEAL FIXED WITH STAINLESS STEEL
BANDS & CLAMPS
500
START OF BEND 180°
500
START OF BEND 180°
MARKER PLATE
300
1200MIN.
600
SLOPE 1:20
50
50
SLOPE 1:20
GROUND LEVEL
GROUND LEVEL
6mm. THK. M.S. SUPPORT
TO BE WELDED ALL ROUND
CASING & THE VENT PIPE
CASING PIPE
30°
FULL PENETRATION
WELD
600
SECTION B-B
8"
10"
12"
14"
2
150
90° BEND
120
MAX. SPACE TO BE 3000
(SEE TABLE)
CARRER PIPE
SEE DETAIL "A"
SECTION A-A
4"
6"
SEE DETAIL "A"
350
CASING PIPE
NPS
WARNING SLAB
INSULATORS EQUAL SPACED
CARRIER PIPE
CARRIER
PIPE
C OF VENT
L
450 SQ.x500 DEEP
CONCRETE BLOCK
1000
1000
MARKER PLATE
450 SQ.x500 DEEP
CONCRETE BLOCK
500
SLOPE DOWN MIN. 1:100
600
"S" SEAL FIXED WITH STAINLESS STEEL
CONC. BASE
2000
WARNING SLAB
CASING
NOTE "11"
1500
2000
AT LOW END OF CASING
2000MIN.
500
MIN. COVER
(SEE NOTE 13)
VENT PIPE BOTTOM CONNECTED
14-CASING PIPE SHALL BE CARBON STEEL API 5LX-52.
TEST POINT & MARKER
DITCH
WARNING SLAB
13-THE MIN COVER ARE SPECIFIED ON THE PROJECT DRAWINGS.
500
VENT PIPE TOP
11- CARRIER PIPE TO BE CONTINUED WITHOUT VERTICAL OR SIDE BENDS
IN PROPERTY LIMIT OR FOR MINIMUM DISTANCE OF 5000.
12-BLOCK VALVES SHALL BE INSTALLED AT EACH SIDE OF ROAD CROSSING
WHERE SPECIFIED IN ROUTE AND PROFILE DRAWINGS.
1500
EDGE OF ROAD
C
L
OF ROAD
EDGE OF ROAD
6500MIN.
UNLESS SITE CONDITION
DOES ALLOW
10- PROPERTY LIMIT FOR DIFFERENT ROAD CROSSING IS ANNOUNCED
BY ENGINEER ACCORDING TO REGULATIONS OF MINISTRY OF ROAD
AND TRANSPORTATION.
GAUZE INSECT SCREEN
FITTED INSIDE PIPE
300MIN.
1000
SLOPE 1:20
50
GROUND LEVEL
9- BACKFILL OVER CASING SHALL BE PLACED IN 150 LAYERS AND
PNEUMATICALLY TAMPED TO REACH THE DENSITY OF UNDISTURBED
SURROUNDINGS AND SURFACE MATERIAL SHALL BE RESTORED TO
THE SATISFACTION OF THE ENGINEER.
50
1000
1500
TOE OF EMBANKMENT
500
B
R.O.W. LIMIT
A
7- CASING SHALL BE THOROUGHLY CHECKED TO ENSURE THAT
NO OUT-OF-ROUNDNESS OR DENTS ARE EXISTING, HOLES IN
CASING PIPE FOR VENTS SHOULD BE PREPARED AND VENTS
WELDED IN BEFORE INSERTION OF CARRIER PIPE.
8- EXPOSED PIPES SHALL BE PAINTED IN ACCORDANCE WITH N.I.O.C.
SPECIFICATION.
180° BEND
PROPERTY LIMIT
6500MIN.
MARKER PLATE
DETAIL "B"
LENGTH OF CASING IS SPECIFIED ON RELATED DRAWING
TOE OF EMBANKMENT
FITTED INSIDE PIPE
6- THE CASING SHALL BE SUPPORTED FOR ITS ENTIRE LENGTH AND
SHALL BE LAID SO AS TO SLOPE SLIGHTLY.
ON ALL ROAD CROSSING CASED OR UNCASED,
CONTRACTOR SHALL FURNISH AND INSTALL
SAND BAGS OR EARTH FILLED BAGS TO FULLY
SUPPORT INSTALLED FACILITIES.
SEE NOTE "6"
R.O.W. LIMIT
GAUZE INSECT SCREEN
NOTE:
5- EACH CASING END SHALL HAVE A MINIMUM DISTANCE OF 8 METER
FROM THE CENTER LINE OF ROAD.
PIPELINE
ROAD CROSSING PLAN
300MIN.
PIPE LINE
3- DOUBLE COAT AND DOUBLE WRAP ON CARRIER PIPE OVER LENGTH
OF CASING AND EXTENDING 3 METERS EITHER SIDE OF END OF
CASING, CASING PIPE TO BE SINGLE COAT DOUBLE WRAP VENT
PIPE TO BE SIMILARY TREATED TO A HEIGHT OF 300 mm.
ABOVE GROUND LEVEL. ABOVE THIS LEVEL THE VENT PIPE TO BE
PRIMED AND PAINTED DAYGLOW YELLOW.
4- CASING SHALL BE FREE OF BURRS AT WELDS,VENT PIPES SHALL
BE INSTALLED BEFORE INSERTION OF CARRIER PIPE.
EXCAVATED AREA
BOTTOM OF UNDERCUT
180° BEND
2- WITHIN A CASED CROSSING THE PIPELINE IS CATHODICALLY
PROTECTED.
CARE SHOULD BE TAKEN NOT TO DAMAGE COAT & WRAP WHEN
PULLING THROUGH CARRIER PIPE AND THAT INSIDE OF THE CASING
IS DRY BEFORE END SEALS ARE APPLIED.
(SEE NOTE 13)
SHOULD
ER
HARD
DITCH
BURROW AREA
CASING PIPE
C
L
1- ALL DIMENSIONS ARE IN MILLIMETRES UNLESS OTHERWISE STATED.
VENT
C CASING
L
END OF VENT PIPE TO BE
GROUNDFLUSHED WITH INSIDE
SURFACE OF CASING PIPE
DETAIL "A"
100
150
200
250
300
350
VENT
CASING PIPE
NPS
8"
10"
12"
16"
16"
18"
DN
200
250
300
400
400
450
THK. NPS DN SCH.
4.7
5.6
6.3
7.9
7.9
7.9
3"
3"
3"
3"
3"
3"
80
STD.
80
STD.
80
STD.
80
80
80
STD.
STD.
STD.
STD.
16"
400
20"
500
7.9
3"
20"
500
24"
600
7.9
4" 100 STD.
18"
2
DN
22"
24"
30"
36"
40"
450
550
600
750
900
1000
42" 1050
24"
26"
30"
600
650
750
7.9
7.9
9.5
900
11.1
48" 1200
15.8
36"
42" 1050
48"
1200
12.7
15.8
80
mm
3000
3000
3000
3000
3000
3000
3000
100 STD.
3000
4" 100 STD.
2000
4"
4"
100 STD.
4"
100 STD.
4"
100 STD.
4" 100 STD.
4"
100
STD.
THIS DWG. SUPERSEDES DWG. No.SM-6016
INSULATOR
SPACE
3000
C
B
A
REV.
PIPELINE ROAD CROSSING
TYPICAL ARRANGEMENT OF
CASED PIPE ROAD CROSSING
2000
2000
2000
DATE
NO REVISION PERMITTED UNLESS APPROVED BY STANDARD ORGANIZATION
2000
2000
DESCRIPTION
IRANIAN PETROLEUM STANDARDS
DATE
DRAWING No.
IPS-D-PI-175
SHEET
2
2
REV.

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