DISTRIBUTION: 7 MINNESOTA DEPARTMENT OF TRANSPORTATION DEVELOPED BY: Design Standards ISSUED BY: Design Services Section TRANSMITTAL LETTER NO. (0-0) MANUAL: Standard Plates DATED: January 9, 00 SUBJECT: Standard Plates Index (-4), Standard Plates 830E, 83A. Standard Plate 830E has been updated per request from The Office of Traffic Safety and Technology (OTST). See the attached Summary of Changes document for specifics. Plate 83A - Preformed Rigid PVC Conduit Loop Detector, is a new plate requested by OTST. INSTRUCTIONS: Record the transmittal letter number, date, and subject on the transmittal record sheet located in the front of the manual.. Remove from the manual: Standard Plate Index - Sheets -4 of 4, Numerical Index of Standard Plates, (June 009) Standard Plate 830D, Saw Cut Loop Detectors, (Approved-September 5, 978). Insert in the manual: Standard Plate Index - Sheets -4 of 4, Numerical Index of Standard Plates, (December 009) Standard Plate 830E Sheets -3 of 3, Saw Cut Loop Detectors, (Approved December, 009) Standard Plate 83A Sheets -3 of 3, Preformed Rigid PVC Conduit Loop Detector, (Approved December, 009) 3. Current Standard Plates, Standard Plates Index and Standard Plate Transmittal Letters are available on the web in PDF format at: http://www.dot.state.mn.us/design/standard-plates/index.html. 4. Any technical questions regarding this transmittal should be directed to Tim Brown, Design Standards Unit, at (65) 366-463. 5. Any questions concerning missing manual sheets or extra transmittal letters should be directed to: Map & Manual Sales M.S. 60, Transportation Building, 395 John Ireland Blvd., St. Paul, MN, 5555. Phone: (65) 366-307. Any questions concerning mailing, including address changes, should be furnished in writing to: Mail Center M.S. 75, Transportation Building, 395 John Ireland Blvd., St. Paul, MN, 5555. Phone: (65) 366-305. The last Standard Plate Transmittal Letter No. issued was (09-0), dated July, 009. Michael Elle, P.E. Design Standards Engineer
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SUMMARY OF CHANGES 830E Saw Cut Loop Detectors Transmittal Letter No. (0-0) Standard Plate 830D ( Sheet) is replaced by Standard Plate 830E (3 Sheets). The Roadway Edge Connection detail, the Curb Line Connection detail, and the notes on Plate 830D are replaced by the details on Sheet and the notes on Sheet 3 of Standard Plate 830E. The Single Loop Detector detail, the Multiple Loop Detector detail, the Loop Connection detail, the Joint Sleeve Installation detail, and the notes on Plate 830D are replaced by the details on Sheet and the notes on Sheet 3 of Standard Plate 830E.
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STANDARD PLATES BLANK... 0000 SERIES PAVEMENT... 000 SERIES BLANK... 000 SERIES CULVERTS AND APPURTENANCES... 3000 SERIES SEWER APPURTENANCES... 4000 SERIES EROSION CONTROL STRUCTURES... 5000 SERIES BLANK... 6000 SERIES CURB, CURB AND GUTTER, SIDEWALK... 7000 SERIES BARRICADES, SIGNALS, MARKERS, ETC.... 8000 SERIES MISCELLANEOUS... 9000 SERIES PLATE NO. 0000 SERIES BLANK 000 SERIES PAVEMENT 070L 03J 4D 50Q 0F Reinforced Panel Over Culverts Typical Dowel Bar Assembly Pavement Keyway For Keyed Joint Construction Construction of Header Joints Concrete Pavement Adjacent to Railway Crossing 000 SERIES BLANK 3000 SERIES CULVERTS AND APPURTENANCES 3000L Reinforced Concrete Pipe (5 Sheets) 300B Reinforced Concrete Reducer Pipe 300B Reinforced Concrete Increaser Pipe 3006G Gasket Joint for R.C. Pipe ( Sheets) 3007D Shear Reinforcement for Precast Drainage Structures 304J Reinforced Concrete Pipe Arch ( Sheets) 300F Reinforced Precast Concrete Cattle Pass (60" & 7") 30C Precast Concrete Safety Apron (3 Sheets) 3030A Precast Cattle Pass Transition Section 303B Connection between Existing 4 Ft. X 6 Ft. Cattle Pass and New Precast Transition Section 3040F Corrugated Metal Pipe Culvert (Standard -/3" x /" Corrugation) 304D Corrugated Metal Pipe (3" x " Corrugation) 3050B Design Data Structural Plate Structures (8" Corner Radius) 305B Design Data Structural Plate Structures (3" Corner Radius) 3065C Connection between Existing Culv. & New "C" Culv. Barrel ( Sheets) 3066A C.M. Extension for Box Culvert 300G Concrete Apron for Reinforced Concrete Pipe 30G Concrete Apron for Reinforced Concrete Pipe-Arch 34H Sectional Concrete Apron for Reinforced Concrete Pipe-Arch 3K Metal Apron for C.M. Pipe-Arch Culvert 33J Metal Apron for C.S. Pipe 34B Metal Apron Connection 35A Inlet Protection for Metal Culverts (90" dia. to 96" dia.) 36B Inlet Protection for Structural Plate Pipe (60" thru 96" dia. or span) 37A Inlet Protection for Structural Plate Pipe (0" thru 80" dia. or span) MINNESOTA DEPARTMENT OF TRANSPORTATION NUMERICAL INDEX OF STANDARD PLATES (Sheet of 4) December 009
PLATE NO. 38H 39A 33C 33A 333C 334C 335A 336B 337B 338B 339A 34A 343C 345F 346C 348A 3C Metal Safety Apron & Grate ( Sheets) Metal Apron for Corrugated Polyethylene Pipe (Use at Entrances and Driveways) Precast Concrete Headwall for Subsurface Drains Grate for :4 Precast Concrete Aprons Riprap at RCP Outlets Riprap at CMP Outlets Hand-Placed Riprap at Precast Concrete Cattle Pass Slotted Vane Drain for P.V.C. Pipe Slotted Drain for " thru 30" Dia. C.M. Pipe (Stackable) Slotted Drain for " thru 30" Dia. C.M. Pipe (Not Stackable) Riprap at Precast Concrete End Sections Outlet Screen for C.M. & S.C. Pipes Inspection Tees Concrete Pipe Ties Anti-Seepage Diaphragm (For CMP and CMP-A) Safety Slope Metal End Section for Circular & Arched Pipes ( Sheets) Corrugated Steel Pipe Coupling Band (3 Sheets) 4000 SERIES--SEWER APPURTENANCES List of Castings for Design Structures ( sheets) Standard Casting Assemblies Typical Concrete Manhole or Catch Basin and Casting Combinations 4000J Manhole or Catch Basin (Masonry, Field Constructed) - Design A 400F Manhole or Catch Basin (Masonry, Field Construction) - Design C 4003B 30" Precast Catch Basin Design N 4005L Manhole or Catch Basin Type A & B Cone Sections Precast - Design F 4006L Manhole or Catch Basin Precast - Designs G and H 4007C Precast Mechanical Joint Sewer Manhole 4008E Catch Basin (Sectional Concrete Pipe) - Design I 4009H Manhole or Catch Basin (Sectional Concrete Pipe) - Design J 400H Concrete Short Cone & Adjusting Ring (Sectional Concrete) 40E Precast Concrete Base 407C Catch Basin (Concrete Pipe and Metal Pipe) - Designs PC and PM 408A Manhole or Catch Basin (Reducer Cone Section Precast) Design D 400J Manhole or Catch Basin (For Use With or Without Traffic Loads) ( sheets) 40F Precast Curb Opening Catch Basin 40A Manhole or Catch Basin Cover (3 ft. X ft. Opening) 404A 48" Dia. Precast Shallow Depth Catch Basin - Design SD 405B Drop Inlets or Catch Basins - Design DI (Concrete & Metal) 406A Concrete Encased Concrete Adjusting Rings 40D Ring Casting For Manhole or Catch Basin 408F Adjusting Rings for Catch Basins and Manholes 40F Cover Casting for Manhole (For Use in all Traffic Areas) Casting No. 75 and 76 45D Catch Basin Frame Casting (For Square Grate) Casting No. 806 46F Catch Basin Frame Casting Casting No. 80 49G Catch Basin Frame Casting (For Square Grate) - Casting No. 80A 43F Catch Basin Frame Casting (For Square Grate) Casting No. 805 433A Curb Box Casting for Catch Basin - Casting No. 84 434A Curb Box Casting for Catch Basin (For Design B Curbs) - Casting No. 85 440D Special Grate Castings for Catch Basin (Convex and Concave) - Casting No. 70 and 7 443E Stool Grate & Concrete Frame (Median Drains) - Casting No. 73 449C Grate Casting for Catch Basin - Casting No. 80 MINNESOTA DEPARTMENT OF TRANSPORTATION NUMERICAL INDEX OF STANDARD PLATES (Sheet of 4) December 009
PLATE NO. 450C Grate Casting for All Pipe Drainage Structures 45B Grate Casting for Catch Basin (Square Type) - Casting No. 8 45C Catch Basin Grate Casting - Casting No. 84A 453A Catch Basin Grate Casting - Casting No. 85 454B Catch Basin Grate Casting - Casting No. 86 460D Curb Box Casting for Catch Basin - Casting No. 83A and 833A 46F Curb Box Casting for Catch Basin - Casting No. 8B, 8 and 83A 480J Manhole or Catch Basin Step 5000 SERIES--EROSION CONTROL STRUCTURES 500A Reinforced Concrete Pipe Energy Dissipator 6000 SERIES -- Blank 7000 SERIES--CURB, CURB AND GUTTER, SIDEWALK 7000E Integrant Curbs (Design B, Design V and Design D) 700J Concrete Curb (Design B, Design V, Design S, Design DR and Design BR) ( Sheets) 7035M Concrete Walk & Curb Returns at Entrances 7036F Pedestrian Curb Ramp (For the Handicapped) ( sheets) 7065C Bituminous Curb 700H Concrete Curb and Gutter (Design B and Design V) 70I Concrete Curb and Gutter (Design BR, D, S, B4, B5 and D3) ( Sheets) 705C Concrete Median (Mountable Type) 707H Entrance Nose (Urban Design) 708F Exit Nose (Urban Design) 709C Median Nose and Island (Undivided to Divided Roadway) 7J Installation of Catch Basin Castings (Concrete Curb and Gutter) 7C Installation & Reinforcement of Catch Basin & Manhole Castings (Concrete Integrant Curbs) 73A Concrete Approach Nose Detail 8000 SERIES -- BARRICADES, SIGNALS, MARKERS, ETC. 8000I 800G 805B 806B 80E 8E 8F 84A 87F 88D 89C 80N 8F 8E 83F 86I 87B 88B Standard Barricades Permanent Barricade Equipment Pad A (Cast-in-Place or Precast) Equipment Pad B (Cast-in-Place or Precast) Traffic Signal Bracketing (Pole Mounted) Traffic Signal Bracketing (Pedestal Mounted) (3 Sheets) Pedestal Foundation (Traffic Control Signals) P.V.C. Handhole/Pullbox (No Vehicle Load) ( Sheets) Precast Concrete Hand Hole (Or Pullbox) ( Sheets) Service Equipment & Pole Traffic Control Signals Ground Mounted Cabinet Foundation Pole Foundation (PA85) Transformer Base and Pole Base Plate (PA85M, PA90 and PA00) ( Sheets) Pedestal and Pedestal Base (For Traffic Control Signals Support) Pole and Mast Arm (Luminaires and Traffic Lights Assembly) For All Pole Types ( Sheets) Pole Foundation (PA90 and PA00) Light Base - Design E (40 ft. Pole or Less) Light Base - Design H (49 ft. Pole) MINNESOTA DEPARTMENT OF TRANSPORTATION NUMERICAL INDEX OF STANDARD PLATES (Sheet 3 of 4) December 009
PLATE NO. 830E 83A 850C 8307R 8308A 8309A 836C 838C 836D 839H 8330G 833B 833B 8333B 8337B 8338C 8339A 8340A 8400E 840C Saw Cut Loop Detectors Preformed Rigid PVC Conduit Loop Detector Installation of Culvert Markers W-Beam Guardrail & End Anchorages (Installation with Wood Posts) (4 Sheets) Reinforced Concrete Median Barrier Type F (Non-Glare Screen Type) Design 8308 (3 Sheets) Reinforced Concrete Median Barrier Type F & Glare Screen Design 8309 (3 Sheets) Post Seat for Anchorage on Footing or Box Culverts Guardrail Anchorage Plate for Bridges and BCT'S Flexible Plastic Glare Screen Eccentric Loader Breakaway Cable Terminal (ELT) (4 Sheets) 3-Cable Guardrail (With Wood Posts) (Assembly Details) ( Sheets) 3-Cable Guardrail (With Steel Posts) (3 Sheets) Anchor Bolt Cluster for Light Poles 3-Cable Guardrail Anchor (Anchor Details) (4 Sheets) Temporary Portable Precast Concrete Barrier (Type F ) ( Sheets) W-Beam Guardrail & End Anchorages (Installation with Steel Posts) (4 Sheets) 3-Cable (Steel Posts) to W Beam (Wood Posts) Guardrail Transition 3-Cable (Steel Posts) to W Beam (Steel Posts) Guardrail Transition Pipe Railing At Grade Pipe Railing (Adjacent to Sidewalk) 9000 SERIES--MISCELLANEOUS 9000D 90B 90D 9303B 9308A 9309G 930G 93E 93K 933D 934C 9350A Approaches and Entrances (Recommended Standards) Shaping and Sodding of Slopes at Box Culvert Ends Turf Establishment Areas (At Pipe Culvert Ends) Geodetic Survey Disks (Aluminum) ( Sheets) Survey Monument Cap ( Sheets) PLS (Public Land Survey) Monument ( Sheets) Woven Wire Fence (Wood Post) Woven Wire Fence (Steel Post) Chain Link Fence ( Sheets) Barbed Wire Fence (Wood Post) Barbed Wire Fence (Steel Post) Mailbox Support (Swing-Away Type) MINNESOTA DEPARTMENT OF TRANSPORTATION NUMERICAL INDEX OF STANDARD PLATES (Sheet 4 of 4) December 009
MILL & OVERLAY CONSTRUCTION LOOP DETECTOR CONDUCTORS PLUG CONDUIT WITH DUCT SEAL SHOULDER OR CONC. CURB/GUTTER SAW SLOT -/" DEEP 8" ATTACH SPLICE TO EYE BOLT 45^ TOP OF PVC " BELOW SAW CUT CONDUIT 8" HANDHOLE MIN. WEAR COURSE NON-WEAR COURSE TWIST CONDUCTORS THREE TURNS PER FOOT CONDUIT BUSHING FURNISH AND INSTALL CONDUIT IF INPLACE CONDUIT IS UNUSABLE WHEN REPLACING INPLACE LOOPS 3 OF SLACK INPLACE ROADWAYS LOOP DETECTOR CONDUCTORS SAW SLOT -/" DEEP PLUG CONDUIT WITH DUCT SEAL 8" SHOULDER OR CONC. CURB/GUTTER ATTACH SPLICE TO EYE BOLT 45^ TOP OF PVC " BELOW SAW CUT CONDUIT 8" MIN. HANDHOLE CONC. OR BIT. WEAR COURSE CONC. OR BIT. NON-WEAR COURSE CONDUIT BUSHING TWIST CONDUCTORS THREE TURNS PER FOOT FURNISH AND INSTALL CONDUIT IF INPLACE CONDUIT IS UNUSABLE WHEN REPLACING INPLACE LOOPS 3 OF SLACK NOTES: SEE SHEET 3 FOR ADDITIONAL NOTES SAW CUT LOOP DETECTOR BETWEEN NON-WEAR AND WEAR COURSES SAW CUT LOOP DETECTOR INTO WEAR COURSE OR CONC. SURFACE APPROVED DECEMBER, 009 STATE OF MINNESOTA DEPARTMENT OF TRANSPORTATION SPECIFICATION REFERENCE STANDARD PLATE STATE DESIGN ENGINEER SAW CUT LOOP DETECTORS LOOP/HANDHOLE INSTALLATION 565 NO. 830E OF 3
-/" DRILLED HOLES AT CORNERS LEAD-IN SAW SLOT DRILL SAW CUT CORNERS LOOP SAW SLOTS SAW SLOT AREA TO BE SMOOTHED AREA TO BE SMOOTHED /" REMOVABLE DOWEL -/" DRILLED HOLE CONDUCTORS SAW SLOT AREA TO BE SMOOTHED /" REMOVABLE DOWEL EXTEND SAW SLOT CUT ONE-HALF LENGTH OF SAW BLADE AREA TO BE SMOOTHED SAW SLOT TYPICAL APPROACH DETECTORS MEDIAN ISLAND MULTIPLE LOOP SERIES HOOKUP D D D D SHOULDER STOP LINE LANE D D JOINT/CRACK INSTALLATION SAW CUT LANE DOUBLE SAW CUT 6 6" 6" ALLOW SLACK CONDUCTOR IN SLOT RIGHT LANE NOTES: SEE SHEET 3 FOR ADDITIONAL NOTES. LOOP LEADS SHALL NOT CROSS TRANSVERSE JOINTS IN CONCRETE PAVEMENT. MOVE A LOOP TO THE NEXT SHOULDER PANEL AND INSTALL A SEPARATE CONDUIT TO THE HANDHOLE IF ALL LOOPS WILL NOT FIT ONE PANEL AND MAINTAIN SEPARATIONS SHOWN. SEE PLAN LAYOUT FOR ACTUAL DETECTOR SIZE AND PLACEMENT LOCATION. APPROVED DECEMBER, 009 STATE OF MINNESOTA DEPARTMENT OF TRANSPORTATION SPECIFICATION REFERENCE STANDARD PLATE SAW CUT LOOP DETECTORS DETAILS 565 NO. 830E STATE DESIGN ENGINEER OF 3
NOTES:. WHERE LOOP DETECTORS ARE TO BE FURNISHED AND INSTALLED AND THE ROADWAYS ARE TO BE SURFACED WITH NEW BITUMINOUS PAVEMENT, THE LOOP DETECTORS SHALL BE SAW CUT IN THE ROADWAY AND SEALANT MATERIAL PLACED TO THE SATISFACTION OF THE ENGINEER BEFORE THE BITUMINOUS WEARING COURSE IS PLACED BY THE BITUMINOUS PAVING CONTRACTOR; HOWEVER, THE ENGINEER MAY DIRECT THE CONTRACTOR NOT TO PLACE THE LOOP DETECTORS IN THE ROADWAY UNTIL PAVEMENT MARKINGS AND LANE STRIPING HAS BEEN DETERMINED AND/OR PLACED.. AREA TO BE SAW CUT SHALL BE THOROUGHLY CLEANED BY SWEEPING, WASHING, OR BLOWING SURFACE CLEAR OF DIRT AND DEBRIS. 3. LOOP DETECTORS AND LOOP DETECTOR HOME-RUN WILL BE MARKED ON PAVEMENT BY THE ENGINEER OR BY THE CONTRACTOR AS DIRECTED. 4. 5. LOOP DETECTOR SAW CUTS SHALL BE A UNIFORM DEPTH OF -/" +/- /4" AND /8" WIDER THAN THE OUTER DIAMETER OF THE TUBING. THE CONTRACTOR SHALL AVOID CROSSING CONCRETE JOINTS OR CRACKS. HOWEVER, IF A CONCRETE JOINT OR CRACK MUST BE CROSSED, THE CONTRACTOR SHALL USE THE JOINT/CRACK DETAIL SHOWN ON SHEET OF 3. 6. ALL LOOP CORNERS SHALL BE SQUARE. CORNERS SHALL BE DRILLED WITH -/" DIAMETER DRILL TO A DEPTH OF /4" DEEPER THAN SAW CUT. CORNERS SHALL BE ROUNDED TO PREVENT DAMAGE TO THE CONDUCTORS OR TUBING. 7. ALL LOOP DETECTOR SAW CUTS SHALL BE CLEANED AND FLUSHED OF FOREIGN MATERIAL USING A COMBINATION OF AIR AND WATER, AND DRIED WITH COMPRESSED AIR PRIOR TO INSTALLATION OF LOOP DETECTOR CONDUCTORS. DRY SAWING DOES NOT REQUIRE WATER FLUSHING, HOWEVER, THE SAW CUT SHALL BE CLEANED OF ALL FOREIGN MATERIAL. 8. THE CONTRACTOR SHALL FURNISH AND INSTALL FROM THE END OF THE SAW-CUT TO THE ADJACENT HANDHOLE A MINIMUM OF A 3/4" CONDUIT FOR A SINGLE LOOP DETECTOR OR AN APPROPIATE SIZED CONDUIT BASED ON N.E.C. FILL RATIONS FOR OR MORE LOOP DETECTORS. 9. BEFORE INSTALLATION OF LOOP DETECTOR CONDUCTORS, THE CONTRACTOR SHALL PLACE A BEAD OF APPROVED LOOP DETECTOR SEALANT IN SAW CUT SLOT TO WITHIN 6" OF THE CONDUIT THAT RUNS FROM THE END OF THE SAW-CUT TO THE ADJACENT HANDHOLE. 0... THE CONTRACTOR SHALL PLACE THE CLEAN AND DRIED LOOP DETECTOR CONDUCTORS CONTINUOUS WITH 4 TURNS OF WIRE AND WOUND IN A CLOCKWISE DIRECTION. THE LOOP DETECTOR CONDUCTORS SHALL BE PUSHED TO THE BOTTOM OF THE SAW-CUT WITH A BLUNT INSTRUMENT TO AVOID DAMAGING TUBING OR CONDUCTORS. THE CONTRACTOR SHALL INSTALL 3/4" DIAMETER BY " BACKER ROD AT INTERVALS TO ENSURE THAT THE CONDUCTORS ARE AT THE BOTTOM OF THE SAW CUT. LOOP DETECTOR CONDUCTORS SHALL BE TWISTED 3 TURNS PER FOOT THROUGH THE CONDUIT TO THE SPLICE IN THE HANDHOLE. 3. LOOP DETECTOR LEAD-IN CONDUIT SHALL BE SEALED WITH DUCT SEAL OR OTHER APPROVED SEAL TO PREVENT LOOP DETECTOR SEALANT FROM ENTERING CONDUIT. 4. SEAL LOOP DETECTOR CONDUCTORS WITH A MN/DOT APPROVED LOOP DETECTOR SEALANT AS LISTED ON THE MN/DOT APPROVED PRODUCTS LIST (APL) AND IN ACCORDANCE WITH THE MANUFACTURER S INSTRUCTIONS. 5. THE LOOP DETECTOR ROADWAY CONDUCTORS AND THE LOOP DETECTOR LEAD-IN CABLE CONDUCTORS SHALL BE PROPERLY PREPARED AND CLEANED BEFORE SPLICING. ROUGHEN CABLE JACKET WITH SAND PAPER TO ENSURE GOOD ADHESION WITH SPLICE KIT. 6. LOOP DETECTORS SHALL BE SPLICED USING AN APPROVED SPLICE KIT AS LISTED ON THE MN/DOT APPROVED PRODUCTS LIST (APL). MN/DOT APPROVED SPLICE KITS SHALL BE INSTALLED, EITHER ACCORDING TO MANUFACTURES INSTRUCTIONS, OR BY AN ALTERNATE METHOD APPROVED BY THE ENGINEER. 7. PRIOR TO FURNISHING AND INSTALLING THE APPROVED LOOP DETECTOR SPLICE KIT, THE CONTRACTOR SHALL SOLDER THE ENDS OF THE LOOP DETECTOR LEAD-IN CONDUCTORS TO THE ROADWAY LOOP DETECTOR CONDUCTORS, AND SHALL FURNISH AND INSTALL AN APPROPRIATE SIZED WIRE NUT TO THE SOLDERED ENDS PRIOR TO INSTALLATION OF THE SPLICE KIT. 8. SPLICE KITS SHALL BE FURNISHED AND INSTALLED IN HANDHOLES IN SUCH A MANNER AS TO ENSURE THAT EACH SPLICE KIT IS SUSPENDED AND/OR SECURED NEAR THE TOP OF THE HANDHOLE TO THE SATISFACTION OF THE ENGINEER (PLACING SPLICE KITS ON TOP OF THE ELECTRICAL CABLES AND CONDUCTORS IS NOT ACCEPTABLE). APPROVED DECEMBER, 009 STATE OF MINNESOTA DEPARTMENT OF TRANSPORTATION SPECIFICATION REFERENCE STANDARD PLATE NO. SAW CUT LOOP DETECTORS 565 STATE DESIGN ENGINEER NOTES 3 OF 3
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TYPICAL CROSS STREET RIGID PVC LOOP DETECTOR LAYOUT STOP LINE OR CROSSWALK 3 3 9 5 TYPICAL LEFT TURN LANE VARIABLE NUMBER OF CONDUITS WITHIN SAME TRENCH STACKED OR SIDE BY SIDE 3 9 3 5 TYPICAL THRU LANE VARIABLE NUMBER OF CONDUITS WITHIN SAME TRENCH STACKED OR SIDE BY SIDE 3 5 TYPICAL RIGHT TURN LANE VARIABLE NUMBER OF CONDUITS WITHIN SAME TRENCH STACKED OR SIDE BY SIDE SHOULDER SEPARATE CONDUITS ENTERING HANDHOLE CONDUIT AND CABLES HANDHOLE TO CONTROLLER AS REQUIRED IN PLAN TYPICAL RIGID PVC LOOP DETECTOR DETAIL 90^ FACTORY ELBOW (TYPICAL) NOTES: SEE SHEET FOR ADDITIONAL NOTES. 6 DIMENSION SHOWN IS TYPICAL USE GIVEN DIMENSION INDICATED TEE CONDULET ON PLAN LAYOUT. (WITH ACCESS ORIENTED TO TOP) THIS DIMENSION MAY VARY 3/4 " RIGID PVC SHALL BE CONTINUOUS FROM ACCORDING TO LOOP SIZE ON TEE TO INSIDE OF HANDHOLE (LENGTH AS REQUIRED) PLAN LAYOUT. BELL END HANDHOLE COUPLING (TYPICAL) MINIMUM 6 OF CONDUCTOR IN HANDHOLE. SEE SPECIAL PROVISIONS FOR SPLICE TO LOOP DETECTOR LEAD-IN CABLE 3 6 x 6 RIGID PVC LOOP DETECTOR (CENTERED IN THE LANE). APPROVED DECEMBER, 009 STATE OF MINNESOTA DEPARTMENT OF TRANSPORTATION SPECIFICATION REFERENCE STANDARD PLATE STATE DESIGN ENGINEER PREFORMED RIGID PVC CONDUIT LOOP DETECTOR LAYOUT DETAILS 357 360 565 NO. 83A OF 3
NOTES:. ROADWAY LOOP DETECTOR CONDUCTORS AND LOOP DETECTOR LEAD IN CABLES SHALL BE IN ACCORDANCE WITH MN/DOT SPEC 385.. THE 3/4" RIGID PVC CONDUIT AND FITTINGS SHALL BE SCHEDULE 40. SEE SPEC. 3803. 3. THREE CORNERS OF EACH LOOP DETECTOR SHALL BE A 90^ FACTORY ELBOW (6" RADIUS). THE FOURTH SHALL BE A RIGID PVC TEE CONDULET. 4. APPROVED RIGID PVC PRIMER AND CEMENT SHALL BE USED FOR THE RIGID PVC JOINTS. 5. ALL SLACK MUST BE REMOVED FROM LOOP DETECTOR CONDUCTORS WITHIN THE RIGID PVC. 6. THE ROADWAY LOOP DETECTOR CONDUCTORS (/C#4) SHALL BE TWISTED THREE TURNS PER FOOT FROM THE RIGID PVC TEE CONDULET TO THE HANDHOLE. 7. ATTACH A FERROUS METAL ITEM IN OR ADJACENT TO THE TEE CONDULET COVER OR AS DIRECTED BY THE ENGINEER. 8. EACH LOOP DETECTOR CONDUIT TO THE HANDHOLE SHALL BE SLOPED TOWARDS THE HANDHOLE. 9. LOOP DETECTOR CONDUITS TO THE HANDHOLE MAY BE PLACED WITHIN THE SAME TRENCH. 0. THE LOOP DETECTOR ROADWAY CONDUCTORS SHALL EXTEND 6 TO 0 INTO THE HAND HOLE FOR SPLICING.. NO SPLICES ALLOWED IN CONDUIT.. IF BENDING OF THE RIGID PVC LOOP LEAD-IN CONDUIT IS REQUIRED, AN APPROPRIATE HEATING BLANKET OR DEVICE APPROVED BY THE ENGINEER SHALL BE USED. EXPOSED FLAME OR TORCHES ARE NOT ALLOWED. 3. TYPICAL SIZE OF LOOP DETECTORS ARE 6 x 6 AND 6 x 0. REFER TO INTERSECTION LAYOUT FOR SPECIFIC LOOP DETECTORS TO BE PLACED. 4. ALL LOOP DETECTORS SHALL HAVE 4 TURNS OF CONDUCTORS. 5. THE LOOP DETECTOR ROADWAY CONDUCTORS AND THE LOOP DETECTOR LEAD-IN CABLE CONDUCTORS SHALL BE PROPERLY PREPARED AND CLEANED BEFORE SPLICING. 6. PRIOR TO FURNISHING AND INSTALLING THE APPROVED SPLICE KIT, THE CONTRACTOR SHALL SOLDER THE ENDS OF THE LOOP DETECTOR, LEAD IN CONDUCTOR AND SHALL FURNISH AND INSTALL AN APPROPRIATE SIZED WIRE NUT TO THE SOLDERED ENDS PRIOR TO THE INSTALLATION OF THE SPLICE KITS. 7. LOOP DETECTORS SHALL BE SPLICED USING A MN/DOT APPROVED SPLICE KIT AS LISTED ON THE MN/DOT APPROVED PRODUCTS LIST (APL). MN/DOT APPROVED SPLICE KITS SHALL BE FURNISHED AND INSTALLED, EITHER ACCORDING TO MANUFACTURERS INSTRUCTIONS, OR BY AN ALTERNATIVE METHOD APPROVED BY THE ENGINEER. 8. SPLICE KITS SHALL BE FURNISHED AND INSTALLED IN HANDHOLES IN SUCH A MANNER AS TO ENSURE THAT EACH SPLICE KIT IS SUSPENDED AND/OR SECURED NEAR THE TOP OF THE HANDHOLE TO THE SATISFACTION OF THE ENGINEER. (PLACING SPLICE KITS ON TOP OF THE ELECTRICAL CABLES AND CONDUCTORS IS NOT ACCEPTABLE). APPROVED DECEMBER, 009 STATE OF MINNESOTA DEPARTMENT OF TRANSPORTATION SPECIFICATION REFERENCE STANDARD PLATE STATE DESIGN ENGINEER PREFORMED RIGID PVC CONDUIT LOOP DETECTOR LAYOUT NOTES 357 360 565 NO. 83A OF 3
INPLACE PAVEMENT TRAFFIC LANE TOP OF PAVEMENT 4" MIN 6" MAX 4" MIN 6" MAX GUTTER OR SHOULDER 6 C L TRENCH CL TRENCH TO HANDHOLE 5" (TOP OF LOOP ASSEMBLY OR AS TEE CONDULET CONTINUOUS RIGID PVC CONDUIT NOTES: DIRECTED BY THE ENGINEER) 6 X 6 RIGID PVC LOOP DETECTOR CENTERED IN DRIVING LANE TO HANDHOLE - SLOPE TO MAINTAIN DRAINAGE TO HANDHOLE. USE THE LOOP DETECTOR TO BE PLACED FOR THE PURPOSE OF MARKING THE PAVEMENT LOCATION FOR THE MILLING OPERATION.. TO ACHIEVE FULL TRENCH DEPTH FOR CONDUIT PLACEMENT, MILL BEYOND THE DESIRED PAVEMENT MARKING. 3. PROVIDE A MINIMUM 5" CLEARANCE, MEASURED FROM THE TOP OF THE FINISHED PAVEMENT TO HIGHEST POINT OF LOOP ASSEMBLY (INCLUDING CONDUIT). 4. AN AIR COMPRESSOR UNIT (50 HP) IS REQUIRED FOR REMOVING ALL LOOSE MATERIAL FROM TRENCH PRIOR TO TACK COAT APPLICATION. 5. APPLY A TACK COAT AT A UNIFORM RATE TO THE BOTTOM AND EDGES OF THE MILLED AREA. USE AN EMULSIFIED ASPHALT PER SPEC. 357.A 6. 7. 8. 9. 0.. SURFACE. NEW PAVEMENT TRAFFIC LANE TOP OF PAVEMENT 6 " TO HANDHOLE MIXTURE USED TO FILL THE RETROFIT LOOP DETECTOR TRENCHES SHALL MEET THE REQUIREMENTS OF MN/DOT SPECIFICATION 360. AGGREGATE SIZE A OR B WILL BE ALLOWED WHEN 360 IS UTILIZED. OTHER WEARING COURSE MIXTURE TYPES ARE ALLOWED WHEN APPROVED BY THE ENGINEER. COMPACTION SHALL BE OBTAINED BY THE ORDINARY COMPACTION METHOD. BACKFILL THE TRENCH WITH A MINIMUM OF TWO LIFTS AND COMPACT EACH LIFT. BEFORE COMPACTING THE FIRST LIFT ENSURE THAT THERE IS ADEQUATE MIXTURE ON EACH SIDE AND ABOVE THE CONDUIT SO THAT THE CONDUIT IS NOT DAMAGED DURING COMPACTION OPERATIONS. THE COMPACTED MIXTURE IN THE TRENCH SHOULD BE LEFT /4 " TO / " ABOVE THE ADJACENT PAVEMENT SURFACE TO PROVIDE FOR ADDITIONAL COMPACTION BY TRAFFIC. WHEN LOOP DETECTORS ARE MILLED INTO CONCRETE SURFACES, REMOVE RUBBLE, SANDBLAST AND AIR BLAST THE TRENCH TO REMOVE DEBRIS. FILL THE TRENCH WITH AN APPROVED MATERIAL LISTED ON THE MN/DOT CONCRETE UNIT S WEBSITE FOR: "PACKAGED DRY RAPID HARDENING CEMENTITIOUS MATERIALS FOR CONCRETE REPAIRS". MILLING IS REQUIRED FOR ALL RIGID PVC LOOP INSTALLATIONS. WHEN LOOPS ARE MILLED INTO EXISTING MILLED SURFACE THAT WILL BE OVERLAYED WITH BITUMINOUS, THE MINIMUM TRENCH DEPTH SHALL BE NO LESS THAN THE HIGHEST LOOP ASSEMBLY IN THE TRENCH. WHEN MILLING INTO EXISTING BITUMINOUS SURFACE, BE ADVISED THAT CONCRETE MAY BE ENCOUNTERED UNDER THE BITUMINOUS GUTTER OR SHOULDER PAVEMENT AGGREGATE BASE TEE CONDUIT 6 X 6 RIGID PVC LOOP DETECTOR CENTERED IN DRIVING LANE CONTINUOUS RIGID PVC CONDUIT TO HANDHOLE - SLOPE TO MAINTAIN DRAINAGE TO HANDHOLE NOTES:. OBTAIN THE REQUIRED COMPACTION OF THE AGGREGATE BASE AFTER PLACEMENT OF LOOP DETECTOR AND LEAD-IN CONDUIT.. THE DEPTH OF THE LOOP MEASURED FROM THE TOP OF THE AGGREGATE BASE TO THE TOP OF THE CONDUIT SHALL NOT EXCEED ". APPROVED DECEMBER, 009 STATE OF MINNESOTA DEPARTMENT OF TRANSPORTATION SPECIFICATION REFERENCE STANDARD PLATE STATE DESIGN ENGINEER PREFORMED RIGID PVC CONDUIT LOOP DETECTOR TYPICAL INSTALLATION 357 360 565 NO. 83A 3 OF 3
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