HomeMy WebLinkAboutCON-103-17CONSTRUCTION
1
PAVEMENT JOINT
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112" RIGID PLASTIC CONDUIT
PLAN
TREATMENT AT PAVEMENT JOINTS NOT TO SCALE
12" X 12" PULL BOX (TYP)
SPLICE (SEE NOTE 12)
3" CONDUIT
B GRANITE CURBING
CONDUIT
WIRES IN SAW CUTS
L •_ B
SECTION A-- A
NOT TO SCALE
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FED. AID. PROD. NO
I
`NSCAL',
YEAR
SHEET
NU:
1 1/4" DIA. DRILLED HOLE AT EACH
INTERSECTING
1' NA
1 1999
F
SAWCUT OR LEAD
-IN ANGLE POINT
DIRECTION OF TRAVEL
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PAVEMENT MARKINGS
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6' (TYP,)
10' (TYP.)
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SAW CUTS 0
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CONTAINING WIRE
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FOR SEGMENTS �
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GRANITE CURB
CONDUIT
(SEE SPECIAL PROVISIONS)
SEE DETAIL
(THIS SHEET)
A PULL BOX (TYP)
MEDIAN /SIDEWALK /PLANTING AREA
* OFFSETS FROM CURB
TO LOOP AND EDGE OF LANE TO LOOP EQUAL
IF NOT SHOWN .
PLAN OF
SEGMENTED DETECTOR
DETAIL
NOT TO SCALE
PAVEMENT JOINT
I Vn
112" RIGID PLASTIC CONDUIT
PLAN
TREATMENT AT PAVEMENT JOINTS NOT TO SCALE
12" X 12" PULL BOX (TYP)
SPLICE (SEE NOTE 12)
3" CONDUIT
B GRANITE CURBING
CONDUIT
WIRES IN SAW CUTS
L •_ B
SECTION A-- A
NOT TO SCALE
-." T" y"
z
FED. AID. PROD. NO
I
`NSCAL',
YEAR
SHEET
NU:
0
MASS.
1' NA
1 1999
F
PROJECT FILE NO. NA
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Y
U
W
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4
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BANGLES VARY
SEE PLANS
NUMBER AND SIZE OF
SECTIONS AND LENGTH
OF DETECTION AREAS VARIES.
SEE TRAFFIC CONTROL AND
CONSTRUCTION PLANS.
TYPICAL DIMENSIONS
SHOWN MAY VARY.
SEE PLANS FOR
VARIATIONS.
FILL WITH FILLER COMPOUND PAVEMENT JOINT.
1/2" RIGID PLASTIC CONDUIT
LOOP WIRES
VERTICAL SECTION
TREATMENT AT PAVEMENT JOINTS NOT TO SCALE
1(11AIT 1,.1 11 lnlll.11
L
DETAIL - PLAN VIEW
NOT TO SCALE
4W CUT
1" OR LARGER CONDUIT
FLEXIBLE STEEL
SEE SPECIAL PROV.
SPHALT
R (M.3.05.0)
TYPICAL 12" X 12"
PULL BOX (SD2.031)
J
J
TOP OF BINDER OR EXISTING PAVEMENT
1 1/2" SURFACE COURSE
�— APPROVED FLEXIBLE SEALER
z
FOAM STRIP, SEE NOTE 7
#14 AWG LOOP WIRES
® THHN STRANDED ENCASED IN
® PROTECTIVE PLASTIC TUBING
(I.M.S.A. SPEC. NO. 51 -5).
SECTION C -C & D -D
LOOPS IN BINDER COURSE OR EXISTING
PAVEMENT TO BE RESURFACED
NOT TO SCALE
2" MIN.
EXISTING /PROPOSED PAVEMENT SURFACE
� FILL WITH APPROVED FLEXIBLE SEALER
FOAM STRIP, SEE NOTE 7.
GRANITE CURBING.
#14 AWG LOOP WIRES
® THHN STRANDED ENCASED IN
® PROTECTIVE PLASTIC. TUBING
(I.M.S.A. SPEC. NO. 51 -5)•
SECTION C -C & D -D
LOOPS IN SURFACE COURSE
TO ADDITIONAL LOOP, IF ANY TO CONTROL CABINET, PULL BOX (FOR AREAS OUTSIDE LIMITS OF
PAVEMENT WORK ONLY)
SECTION B -B
NOT TO SCALE
STATE
FED. AID. PROD. NO
I
`NSCAL',
YEAR
SHEET
NU:
TOTAL -
SHEETS
MASS.
1' NA
1 1999
1 17
PROJECT FILE NO. NA
LOOP DETECTOR DETAILS
DETECTOR NOTES
1. IN HANDHOLE, SPLICE ALL SEGMENTS TO TYPE 11— SHIELDED LOOP DETECTOR
LEAD —IN CABLE. SEGMENTS SHALL BE SPLICED IN PARALLEL, IN SERIES,
OR IN A COMBINATION OF PARALLEL & SERIES AS SHOWN ON THE PLAN
SHEET FOR EACH DETECTOR. NUMBER OF TURNS OF WIRE SHALL ALSO BE
AS SHOWN ON THE PLAN SHEET FOR EACH DETECTOR. SEE NOTE.12.
2. SEE SPECIAL PROVISIONS FOR REQUIREMENTS OF DETECTOR AMPLIFIER.
3. LEAD IN WIRES SHALL BE TWISTED FROM SEGMENT TO SPLICE WITH SHIELDED
CABLE FIVE TURNS PER FOOT. LEAD —IN SHALL BE TYPE 11 (M8.16.11).
4. BEFORE STARTING ANY SPLICING, THE ELECTRICAL CONTRACTOR SHALL,
FURNISH DATA SHEETS ON THE MATERIALS AND /OR METHODS TO BE USED
IN ACCORDANCE WITH THE DEPARTMENT'S STANDARD OPERATING PROCEDURES
FOR APPROVAL OF SHOP DRAWINGS. SEE SECTION 815.64, ESPECIALLY
PARAGRAPH 1.
5, THE METALLIC SHIELD WHICH SHALL ENCASE THE DETECTOR LEADS FROM
A SPLICE (TYPICALLY LOCATED IN A PULL BOX NEAR THE ROADWAY
COMPONENT OF THE DETECTOR) TO THE CONTROLLER, AND THE DRAIN '
WIRE UNDER THE METALLIC SHIELD SHALL NOT BE GROUNDED TO THE
EARTH GROUNDING BUSS IN THE CONTROLLER, AND THE SHIELD AND
DRAIN WIRE SHALL BE CAREFULLY INSULATED FROM THE TRANSFORMER
NEUTRAL OR FROM EARTH GROUND AT ALL POINTS ALONG ITS LENGTH,
SPECIFICALLY, THIS INCLUDES CAREFUL INSULATION OF THE EXPOSED
PORTION OF THE SHIELD AND THE DRAIN WIRE AT THE END AWAY. FROM
THE CONTROLLER WHERE IT 1S SPLICED TO WIRES LEADING TO THE
ROADWAY COMPONENT OF THE DETECTOR. THIS IS IMPORTANT TO
AVOID A GROUND RETURN LOOP.
6. FILL ALL CONDUIT OPENINGS WITH DUCT SEAL.
7. AFTER SAW CUTS ARE COMPLETE, BLOW OUT DEBRIS AND WATER WITH OIL
FREE COMPRESSED AIR UNTIL CUTS ARE CLEAN AND DRY. INSERT WIRE INTO
CLEAN SLOT WITH A BLUNT, SMOOTH, ROUND EDGE TOOL OF WOOD OR
PLASTIC SUCH AS PAINT STIRRER. DO NOT USE A SCREWDRIVER. THEN
INSERT FOAM PLASTIC HOLD DOWN STRIPS, SIMILAR TO ETHA FOAM SB.
STRIPS SHALL BE ABOUT 2" LONG, PLACED IN THE SLOT ABOUT EVERY
2 FEET. THEN POUR SEALER, TAKING CARE TO ELIMINATE BUBBLES.
8. THE COMBINED ROADWAY LOOP, TWISTED LEAD —IN WIRES, SPLICE AND
SHIELDED LEAD —IN CABLE SHALL HAVE A RESISTANCE TO GROUND OF
AT LEAST 100 MEGAOHMS. SEE SPECIAL PROVISIONS FOR ADDITIONAL
REQUIREMENTS.
9. FOR INSTALLATION OF SINGLE (ONE SEGMENT) SMALL WIRE LOOP
DETECTOR DETAIL IS THE SAME. -
10. CUT LOOPS IN BINDER AND FILL WITH APPROVED FLEXIBLE SEALER.
11. DETECTOR WIRE SHALL BE A DIFFERENT COLOR FOR EACH SEGMENT
OF A DETECTOR GROUP. SEE DETAIL
12. SPLICING PATTERN P = SERIES /PARALLEL : SPLICE SEGMENTS 1 & 3
OF AN INDIVIDUAL DETECTOR IN SERIES. SPLICE SEGMENTS 2 & 4
IN SERIES. SPLICE THE RESULTANT TWO GROUPS IN PARALLEL. SPLICE
THE RESULTANT COMBINATION TO ONE LEAD —IN CABLE. CONNECT THIS
CABLE TO AN OTHERWISE UNUSED AMPLIFIER CHANNEL
SPICING PATTERN S = SERIES : SPLICE ALL SEGMENTS (TYPICALLY
FOUR, BUT MAY BE LESS) OF AN INDIVIDUAL DETECTOR IN SERIES.
SPLICE THE. RESULTANT COMBINATION TO ONE LEAD —IN CABLE TO
AN OTHERWISE UNNUSED AMPLIFIER CHANNEL,
THIS PLAN WAS NOT DES.IGNED BY
THE BSC GROUP, INC. IT WAS
PROVIDED BY THE MASSACHUSETTS
HIGHWAY DEPARTMENT AND ALL
INFORMATION CONTAINED HEREIN IS
ASSUMED TO BE CORRECT.