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CONSTRUCTION 1 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: 1 1/4" DIA. DRILLED HOLE AT EACH INTERSECTING 1' NA 1 1999 F SAWCUT OR LEAD -IN ANGLE POINT DIRECTION OF TRAVEL w PAVEMENT MARKINGS — z � Y U W � 4 J 6' (TYP,) 10' (TYP.) m z 0 cn z C C >^ O Q z SAW CUTS 0 r 4 l� � ? z J ? CONTAINING WIRE w z a (n � r7 FOR SEGMENTS � � N W Ln W V) Z V) a ' bi O 0 m J A �0 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 w z � Y U W � 4 J m 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.