UDOT Construction Inspection Guide CHAPTER 7: Traffic Signals, Lighting, ATMS
Published November 2012
Table of Contents Traffic Signals, Lighting, ATMS 7.1 Traffic Signals
02892 – Traffic Signals
Traffic Signal Systems are used to control competing traffic flows by assigning right of way…
16135 –Electrical Junction Box
Used for connections of power and control wiring. It is important that the right junction boxes are used…
16525 – Highway Lighting
Used to improve visibility on roadways. There are a variety of sizes and styles of lighting for use in…
16526 – Electrical Work - Bridges
Must be installed correctly without interfering with the structure of the bridge It is important that
7.3
Traffic Messaging and Monitoring
13557 – Variable Message Sign used to notify motorists of conditions and improve traffic flow. The signs are often… 13558 – Highway Advisory Radio Preparation Used to inform motorists of construction of traffic conditions. The HAR system is provided by the State…
7.2 ATMS – Advanced Traffic Mgmt. System
ATMS is a system of interconnected components used to enhance the use of the facility ….
13551 – General ATMS Requirements
The contractor must provide the Engineer two copies of all documentation required for the installation…
13553 – ATMS Conduit
Is used to run a variety of different wires for power and controls of various traffic management …
13555 – ATMS Cabinets
House electrical equipment used for traffic monitoring and control. The equipment must be…
13552 – Ramp Meter Signal and Signing
Are used to control the flow of traffic onto highways. It is important that signs and signals are …
13554 – Polymer Concrete Junction Boxes
Are used to house a variety of electrical and control connections. Proper placement and connections…
13556 – Closed Circuit Television (CCTV)
CCTV assemblies are used to monitor traffic. They are mounted to poles set on foundations to provide…
13561 – ATMS Power Service
13559 – Non-Intrusive Detector (NID) System
Provide power to the ATMS system from the local power provider. The contractor installs all required….
13591 – Traffic Monitoring Detector Loop
Fiber Optic cables are capable of transferring large amounts of information at one time….
Are used to detect traffic. They are pole mounted and require no road cutting or other destructive….
13594 – Fiber Optic Communication
Are installed in saw cuts in the roadway and are used to detect traffic for signals The detector ...
13595 – ATMS Integration
13592 – Roadway Weather Information System Environmental Sensor Station (RWISESS) Consists of a tower and equipment installed by the Department on a concrete foundation and base….
13593 – Weigh in Motion
Systems are capable of detecting the weight of traffic without having the vehicle stop on a scale….
ATMS systems must be integrated into a complete system that works to improve and manage….
CHAPTER 7: TRAFFIC SIGNALS, LIGHTING, ATMS
7.1 TRAFFIC SIGNALS
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A) TRAFFIC SIGNALS – SECTION 02892 Traffic Signal Systems are used to control competing traffic flows by assigning right of way. The operation of the signal system is vital to the prevention of traffic accidents. All components work together to provide a safe and efficient system of controlling vehicles and pedestrians.
Submittal Items 1. Certified Test Report of wire compliance as specified. 2. Submit samples of materials for approval when requested. 3. Submit 2 copies of the following within 15 days after receiving notice to proceed. a. List of equipment and materials (name of manufacturer, size and identification number). b. Detailed shop drawing, wiring diagram, and certifications. c. Manufacturer’s warranties, guarantees, instruction sheets, and parts lists. 4. Submit UDOT vehicle detector and street lighting splice certifications for all individuals that will perform wiring splices. 5. Buy America Certifications/Documentation.
Pre-Inspection Items The Inspector should ensure that all required submittals have been provided to the Engineer. The Inspector should review plans and specifications for locations and elevations of traffic signal foundations and poles. The Inspector should verify that flowable fill is approved as per section 03575, concrete as per section 03055, hot mix asphalt as per 02741, structural concrete as per 03310, reinforcing as per 03211 and drilled shafts as per section 02466.
Inspection Items The Inspector must verify that the foundation size and spacing is the correct size and depth. The inspector must verify that the reinforcing steel meets plans and specifications. The inspector should coordinate with the materials technician to ensure that all required concrete
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testing and density testing are performed. The concrete should fill the entire excavation. The Inspector must verify that acceptable anchor bolts have been placed and oriented as per plans and specifications. The inspector must verify that the pole, mast and signal head are installed at the correct elevation and that all bolting may require the use of feeler gauges or torque wrench to meet specifications. The inspector should verify that all trenching matches plans and specifications for size, depth, number and type of conduits. PVC conduit is used underground, with galvanized rigid steel conduit above ground. The inspector must verify that conduit or wire is installed and backfilled as per specifications, including flowable fill if required. The inspector should coordinate with the materials technician to ensure that any required density testing on backfill material is performed. The inspector should verify that directional boring is performed at the required depth and locations. The inspector must verify that conduit is attached to structures with at least / " diameter concrete expansion anchors at a maximum spacing of 60". The inspector must verify that controller boxes are placed as approved. The inspector should verify that ground rods are installed as per plans and specifications. The inspector should ensure that the contractor places all material and equipment as per plans and specifications including traďŹƒc signals, pedestrian signals, detection loops, luminaires, control cabinets and junction boxes. The Inspector must ensure that the detector loop test report is received. The inspector should verify that any required ground rods are installed as per plans and specifications. All items should be documented in a visual inspectors report.
Sampling and Testing The Inspector should coordinate with the materials technician to perform all required concrete and flowable fill testing on foundations and backfill as per MS&T. The inspector should coordinate
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CHAPTER 7 with the materials technician to perform all required density testing on backfill. The inspector should verify that the technicians performing sampling and testing are UDOT, TTQP certified.
Common Issues 1. Location or elevation of foundation wrong 2. Signal pole set at the wrong elevation. 3. Trenching or directional boring not at required depth. 4. Signal Heads not pointed in proper direction. 5. UDOT Traffic and Signal Division not included in the Signal Evaluation. 02892: TRAFFIC SIGNALS
Pre-Inspection Verify that all submittals have been received by the Engineer. Review plans and specifications for locations and elevations of poles and foundations. Review plans and specifications for size and types of poles and foundations. Verify that mix designs have been submitted and approved for concrete, flowable fill and Hot Mix Asphalt as required.
Inspection Verify that the foundation is the correct depth and size. Verify that reinforcing steel and anchor bolts are installed as per plans and specifications. Coordinate with materials technician to ensure that all required concrete sampling and testing is performed. Verify that the correct pole, mast and signal head are installed at correct elevation. Verify that trenching is done to plans and specifications for locations, size and depth. Verify that conduit or wire is installed as per plans and specification. Verify that backfilling is performed as per plans and specifications including flowable fill if required. Verify that directional boring is performed at required depth and in correct locations. Verify installation of ground rods as per plans and specifications. Verify installation of all required equipment including foundations, cabinets and junction boxes. Verify that a copy of the detection loop report is received.
Sampling & Testing Coordinate with materials technician to perform all required concrete sampling and testing as per project specifications and MST. Coordinate with the materials technician to perform soil densities on backfill if required. Verify that all sampling and testing are performed by qualified personnel.
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B) ELECTRICAL JUNCTION BOXES – SECTION 16135 Electrical junction boxes are used for connections of power and control wiring. It is important that the right junction boxes are used and that they are installed to specs so that the connections are protected and remain accessible for future work and service.
Submittal Items Electrical junction boxes should be included in the list of materials submitted to the Engineer as part of the overall electrical submittal.
Pre-Inspection Items The inspector should review plans for locations and types of junction boxes to be used. The inspector should verify that all required excavation, grading and surface preparation are complete prior to installation of junction boxes.
Inspection Items The inspector should verify that junction boxes are the specified type and are located in the right locations. The inspector should verify that the junction boxes are labeled appropriately for the type of connection. (Traffic Signal, Street Lighting, Communication, Sprinkler Control, Count Station). The inspector should verify that the box is installed so that the top is flush with the adjacent surfaces. If concrete is placed around the box expansion material must be placed around the box. The inspector should verify that holes in junction box are not more than ¼" larger than conduits that are installed. The inspector should verify that conduits are caulked to junction box with appropriate caulking. The inspector should verify that backfill around the junction box is hand tamped granular material with the top 4" matching the composition, density and elevation of the surrounding surface.
Sampling and Testing The inspector should coordinate with the materials technician to ensure that all required sampling and testing has been performed on materials used under and around the junction box. Page | 4
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Common Issues 1. Junction boxes not labeled appropriately. 2. Junction boxes not flush with surrounding material. 3. Expansion strip not placed between junction box and concrete if concrete is placed around box. 16135: ELECTRICAL JUNCTION BOXES Verify the location and type of junction box. Verify that the junction box is marked appropriately for the type of connection. Verify that the top of the box is flush with the adjacent surface and expansion strip is in place if concrete is placed around Junction box. Verify that holes in junction box are not more than ¼ inch larger than conduit and are caulked. Verify that backfill around junction box is performed to specifications.
C) HIGHWAY LIGHTING – SECTION 16525 Highway lighting is used to improve visibility on roadways. There are a variety of sizes and styles of lighting for use in varying applications. It is important that the appropriate lighting is installed as per plans and specifications to ensure that the lighting provides the desired degree of visibility for people using the facility.
Submittal Items 1. The contractor must provide the Engineer the following information. 2. The manufacturer’s certification upon request. 3. Wiring schematics, detailed shop drawings, and certifications within 15 days of the notice to proceed. 4. Manufacturer’s warranties, guarantees, instruction sheets, and parts list. 5. List of equipment and materials including the name of the manufacturer, size, and identification numbers within 15 days of the notice to proceed. 6. Buy America Certification/Documentation.
Pre-Inspection Items The inspector should verify that all submittals have been received by the Engineer. The inspector should verify that all required grading and site preparation is performed prior to the
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Construction Inspection Guide installation of the light pole foundation. The inspector should review the plans and specifications for locations, elevations and types of foundations, poles and equipment cabinets. The inspector should ensure that utility locations have been performed to discover any conflicts with drilling, boring or trenching.
Inspection Items The inspector should inspect the pole foundation as per section 02466 (Drilled Shafts). The inspector should verify the location and elevation of foundations. The inspector should verify the depth and size of the foundation. The inspector should verify that the correct reinforcement and anchor bolts are used in the foundation. The anchor bolts should be checked for elevation and orientation. The reinforcement should be the specified, size, shape, length and type. The inspector should ensure that it is in good condition when placed and that minimum concrete cover is achieved. The inspector should coordinate with the materials technician to ensure that all required concrete sampling and testing is performed as per project specifications and MS&T requirements. The mix should be checked to verify the use of an approved mix. Trenching and boring should be performed as per Section 02892 (Traffic Signals). The inspector should verify that trenching is the required depth and size and that the correct conduit or wiring is placed in the trench. The inspector should verify that backfill is performed as per specifications including the use of an approved flowable fill if required. The inspector should coordinate with the materials technician to ensure that any required density testing is performed as per specifications and MS&T requirements. The light pole should be installed as per SL Series Standard Drawings. The inspector should verify that the correct type and size of pole are used. The inspector should verify that the pole is in good condition after delivery and installation without damage to the pole, arm or luminaire including damage to the galvanized coating. The inspector should verify that the pole is numbered as per plans and at a 45 angle to approaching traffic. The inspector must verify that all bolting is installed and fastened as per plans, specifications and SL Series Drawings. The pole should be plumb with all anchor and Slip bolts torqued to specifications. Anchor bolts tightened to 11 lb/ft and Slip bolts tightened to 8 lb/ft, released and redone to 6 lb/ft. Steel poles should never be drilled. The inspector should verify that luminaires are installed as per plans. If a high mast luminaire is used a manufacturer’s certification that the service hoist operation is installed correctly is required. Page | 6
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CHAPTER 7 The inspector must verify that equipment foundations are installed as per SL Series Standard Drawings. The equipment must be fastened to the foundations as per SL Series Standard Drawings. Padlocks should be installed on all doors.
Sampling and Testing The inspector should coordinate with the materials technician to ensure that all required concrete tests are performed on the foundation placement as per project specifications and MS&T. The inspector should coordinate with the materials technician to ensure that all required soil densities are performed on backfill of trenching and other excavations. The inspector should ensure that sampling and testing of concrete and soils are performed by qualified technicians.
Common Issues 1. Foundations placement and mounting bolts at the wrong elevations. 2. The contractor installed improper pole or luminaire. 3. Incorrect foundation bolt pattern for mounting. 16525: HIGHWAY LIGHTING
Pre-Inspection Verify that all submittals have been received. Verify that all required grading and site preparation is performed prior to the installation of foundations, poles and equipment foundations. Review plans for locations, elevations and types of foundations, poles and equipment cabinets.
Inspection Verify location and elevation of light pole foundation. Verify foundation depth and size. Verify that reinforcement and anchor bolts meet requirements and are installed as per plans and specifications. Verify that concrete placed for foundation is an approved mix and is sampled and tested as per project specifications and MS&T requirements. Verify that directional boring and trenching meet requirements for size, depth, conduit and wire placement and backfill. Verify that flowable fill is placed as required. Verify the type and size of light pole and identification number. Verify that all bolting is performed to plans, specifications and SL Series Drawings. Verify that foundations for controls and equipment are installed as per plans and specifications. Verify that backfill of trenching and foundations meets requirements and that density testing is performed as required. Verify that the Materials technician performing sampling and testing is qualified.
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D) ELECTRICAL WORK BRIDGES – SECTION 16526 Electrical Work on bridges must be installed correctly without interfering with the structure of the bridge. It is important that electrical conduit, junction boxes and other materials conform to requirements and are placed as per plan.
Submittal Items 1. The materials used for bridge electrical work are part of the general Materials list provided to the Engineer for electrical work. 2. Buy America Certification/Documentation.
Pre-Inspection Items The inspector should review plans and specifications for the locations and types of electrical work. Special attention should be paid to whether conduits are placed in the bridge structure or are mounted to the exterior of the bridge.
Inspection Items The inspector should verify that all electrical conduit and junction boxes placed in concrete meet plans and specifications and are installed in the right locations as per plans and specs. Schedule 40 PVC conduit and fittings are to be used when placed in concrete. The inspector should ensure that the electrical work does not impact concrete cover requirements or reinforcement requirements. The inspector should verify that conduit placed on the exterior of the bridge is galvanized rigid steel and is placed as per plans and specifications. Junction boxes must be hot dipped galvanized cast iron. All anchoring to the exterior of the bridge must be performed with good workmanship with the anchors placed accurately. Anchor bolts should not be bent or holes in the base plate reamed out.
Sampling and Testing Sampling and testing are not required on the electrical system except as required by the Engineer.
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Common Issues 1. Wrong type of conduit for application. 2. Non-galvanized junction boxes. 16526: ELECTRICAL WORK BRIDGES
Pre-Inspection Review plans and specifications for locations and types of electrical materials.
Inspection Verify that all electrical conduit, junctions boxes and other materials are the correct type and in the correct locations as per plans and specifications. Verify that electrical materials placed in concrete do not interfere with requirements for concrete cover or reinforcement placement. Verify that schedule 40 PVC conduit is used for placement in concrete and galvanized steel conduit is used for conduit mounted to exterior. Verify that all anchoring to the exterior of the bridge is performed with the anchor bolts placed accurately. Ensure that bolts are not bent or base plates reamed.
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7.2 ATMS (ADVANCED TRAFFIC MANAGEMENT SYSTEM) ATMS is a system of interconnected components used to enhance the use of the facility. Differing locations have differing requirements so the number and types of interconnected components vary. This section includes Ramp meter Signals and signing, Closed Circuit Television Assembly, ATMS power service, Variable message signs, Highway advisory radio, Non Intrusive Detector System, Traffic Monitoring detector loop, Roadway Weather information system, weigh in motion and other requirements necessary for the ATMS to work as designed.
A) GENERAL ATMS REQUIREMENTS – SECTION 13551 Submittal Items The contractor must provide the Engineer two copies of all documentation required for the installation, testing and maintenance of ATMS components to the Engineer. One copy of the User’s manual and other manufacturer provided field documentation must be provided by the contractor in a weatherproof sleeve in each corresponding field cabinet. The contractor must provide the following documentation at the times indicated: • Contractor provided Material and Equipment lists within 15 days of the Notice to proceed. • Factory Acceptance Testing within 7 days of factory acceptance testing completion. • Compliance Certificate within 5 days of receipt from the manufacturer as required by plans or special provisions. • Manufacturer’s Equipment Documentation received and accepted prior to the Engineer’s site inspection. • Punch List from Engineer’s site inspection completed and submitted at time of site inspection. • 5 day ATMS Testing Pre-Notification submitted to the Engineer 5 days in advance of proposed test dates. Page | 10
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CHAPTER 7 • Power Test Data Form submitted 5 days in advance of proposed LOTF dates. • Local Field Operations Test Results submitted within 5 days of test completion. • System Test Results if required within 5 days of test completion. • Fiber Channel Plan submitted 5 days in advance of 30 day Burn In Test. • Construction as Built Drawings submitted within 5 days after successful completion of the 30 day ATMS Burn In Test. • Fiber Optic Cable Test Results submitted with As-Built Drawings. • The contractor must submit 5 hard copies and 1 electronic copy of the As-Built Drawings to the Engineer.
Pre-Inspection Items The inspector should verify that all required submittals have been received by the Engineer. The Inspector should review plans to verify locations of trenching, boring and equipment. Equipment locations may be moved to avoid conflict with the approval of the Engineer. The contractor must coordinate with the Engineer to field locate all new facilities. They should avoid areas with poor drainage, place facilities for ease of access and maintenance and maintain clear zones. The inspector should ensure that the contractor has had any potentially conflicting utilities marked and has coordinated with any utility company that is to be potentially impacted to meet their requirements. The contractor must not proceed on work outside the UDOT right-of-way.
Inspection Items The inspector must verify that all excavation for trenching and equipment foundations is done as per plans and specifications. The contractor should not excavate wider than is required to place required conduit or foundation. The inspector should verify that excavation does not damage streets, sidewalks, landscaping or other features. The contractor must hand dig the last 2' to an existing facility. If damage occurs the inspector should note the damage caused and location. The inspector should ensure that all excess material is removed from the site within 48 hours. Conduit trenches must be inspected prior to being backfilled.
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The inspector should verify that all anchor bolts are that all anchor bolts are installed as per plans and specifications. Anchor bolts must be held in place while concrete is placed and consolidated. Concrete must be an approved mix and must be sampled and tested as per project specifications and MS&T requirements. The inspector should coordinate with the materials technician to ensure that all required testing is performed. Existing conduit and junction boxes should be reused if they are in acceptable condition. The inspector should verify the size and types of existing conduit and junction boxes. The inspector should verify that reused conduit meets requirements for depth of cover. The inspector must verify that all abandoned ATMS facilities have their foundations removed to a depth of 2'. Conductors should be removed from conduit with conduits cut and plugged. The inspector should verify the salvaging of ATMS equipment. The inspector should note any damage that occurs during salvage operations. The Engineer should be notified at least 48 hours prior to the salvaging of equipment, poles and cabinets. The inspector should verify that salvaged wire is only cut at splice locations or at the instructions of the Engineer. The inspector should verify that wire is spooled. All salvaged material must be returned to the specified UDOT facility.
Sampling and Testing The inspector should coordinate with the materials technician to perform all required soil sampling and density testing as required by the plans and specifications and MS&T on backfill of trenches and excavation for foundations. The inspector should coordinate with the materials technician to perform concrete sampling and testing as required by the plans, specifications and MS&T.
Common Issues 1. Conflicts with other facilities or utilities. 2. Damage to surrounding features during excavation.
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CHAPTER 7 13551: GENERAL ATMS REQUIREMENTS
Pre-Inspection Review plans and specifications for locations of trenches, boring and equipment. Verify that submittals have been received by the Engineer. Ensure that the locations of all new facilities have been approved by the Engineer. Ensure that the contractor has had any potentially conflicting utilities marked.
Inspection Verify that all trenching and excavating meets plans and specifications for location and depth. Verify that contractor hand digs last 2 feet to an existing facility and note any damage that occurs during excavation. Verify that all anchor bolts are installed as per plans and specifications. Verify the use of an approved concrete mix design and any required testing. Verify the size, type and depth of reused existing conduits. Verify that the foundations of abandoned facilities are removed to a depth of 2' below surface. Verify the salvage of unused ATMS equipment. Note any damage. Coordinate with the materials technician to perform any required density or concrete testing as per plans, specifications and MS&T requirements.
B) ATMS CONDUIT – SECTION 13553 ATMS conduit is used to run a variety of different wires for power and controls of various traffic management devices. The conduit must be the correct size and type and be installed properly to offer adequate space and protection for the wiring and to ensure that the wires can be pulled through the conduit as required.
Submittal Items The conduit is included in the general materials list supplied to the Engineer for electrical work.
Pre-Inspection Items The inspector should review the plans and specifications for the size, types and locations of conduit runs. The inspector should note the locations of boring and trenching. The inspector should verify that the contractor has had all necessary utility locates done prior to excavation.
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Inspection Items Conduit routing is to be determined in the field based on actual conditions at the time of construction to prevent conflicts with existing utilities. The inspector should verify that conduits are not placed directly above existing utilities. The inspector should verify that all conduits crossing roadways are bored. The inspector should verify that conduits are run under park strip where curb and gutter are present. The inspector should verify that junction boxes are not spaced farther apart than 2,500' for tangent highway installations and 1,000' for tangent surface street installations. The junction boxes may need to be closer together to ensure that the cables can be pulled without exceeding their maximum tensile rating. The inspector should verify that the minimum cover for conduits is maintained. The minimum cover in a highway right of way within 20' of the edge of the roadway is 5'. Conduits must be covered with at least 3' of material under sidewalks or paved surfaces and within right of way greater than 20' from roadway. The inspector should verify that the conduits do not deflect by a ratio of 1:10 when installing conduit for communication cables. The inspector should verify that conduit is not field bent. Bends in the conduit should not be less than 36" radius except at cabinet and pole foundations where they must be 24" radius minimum. Conduit placed parallel to existing conduit must be placed within 1' of the existing traďŹƒc signal or ATMS conduit. The inspector should verify that all open trench conduit, including the exposed ends of bored or plowed conduits, are encased with flowable fill. Warning tape with the Page | 14
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CHAPTER 7 appropriate color and lettering for the type of cable to be installed should be placed in trenches except when the flowable fill is directly covered with asphalt or PCCP. The inspector should verify that the road is cut full depth prior to any removal of material when trenching asphalt concrete roads. Flowable fill must be placed as per AT Standard Drawings. The inspector should verify that soil is compacted as per section 02705. Tack coat must be applied to the base prior to installing T patch. The inspector should verify that flowable fill is used full depth of the trench to the bottom of the pavement when trench crosses a sidewalk or decorative pavement. Soil under the concrete must be compacted and concrete must be 3.5" to 8" deep. The sidewalk or decorative pavement must be restored to original condition or better. The inspector should verify that conduits under unpaved surfaces have at least 3" of flowable fill cover. Flowable fill must completely encapsulate the conduit with a minimum of 1.5" of cover to the walls of the trench. The conduits should be spaced with spacers and anchored at 16' intervals to maintain the required conduit depth. Flowable fill must not be placed within 8" of the finished grade in native earth. The inspector must verify that all drilling fluid is removed is contained and removed from outside bores. The material must be hauled away and disposed of properly. The inspector should verify that all areas are restored after trenching and boring operations are complete. This includes concrete pavement, asphalt pavement, curbs and gutters, box culverts, sewers, underground water mains, sprinkler systems, sidewalks and concrete flat- work that are damaged during conduit and junction box installation.
Sampling and Testing The inspector should coordinate with the materials technician to ensure that all required sampling and testing are performed on concrete used to repair or replace damaged areas as per specifications and MS&T requirements. The concrete should be checked to ensure that it conforms to an approved mix design and that it meets specifications for air content, slump, temperature and time from batching until placement. The inspector should coordinate with the materials technician to perform all required density testing on trench backfill as per specifications and MS&T requirements. The inspector should verify that all testing of concrete and soils is performed by qualified personnel.
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Common Issues 1. Conduit not placed at required depth. 2. Flowable fill not placed to required height. 3. Conduits with too great of deflection causing difficulties in pulling cables.
13553: ATMS CONDUIT
Pre-Inspection Review plans and specifications for number and types of conduits to be used. Note the locations of boring and trenching. Verify that all necessary utility locations have been performed.
Inspection Verify that conduits are not placed directly above existing utilities. Verify that conduits are placed under park strips when curb and gutters are present. Verify that junction box spacing does not exceed maximum allowable distance of 2,500' for tangent highway locations and 1,000' for tangent surface street installations. Verify minimum cover of conduits are 3' under hard surfaces and outside of 20' from the shoulder and 5' inside of 20' from the shoulder. Verify that conduits are not field bent and have a minimum radius of 2' at cabinet and pole foundations and 3' radius minimum all other locations. Verify that all conduits in trenches are encased with flowable fill to a minimum depth of 3" from top and 1.5" from the walls. Verify that trenches are backfilled as required by specifications or AT series Standard Drawings including use of flowable fill and soil compaction. Verify that all damage caused by boring, trenching and installation of conduit and junction boxes is restored. Verify that all drilling fluid is contained, removed and disposed of in a proper manner.
Sampling & Testing Coordinate with materials technician for any required concrete sampling and testing. Coordinate with materials technician to perform any required soil densities on trench backfill. Verify that all technicians are qualified to perform the testing.
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C) ATMS CABINET- SECTION 13555 ATMS cabinets house electrical equipment used for traffic monitoring and control. The equipment must be protected from the elements and securely fastened. The cabinets may be mounted to either poles or foundations and provide maintenance access to the equipment for future servicing.
Submittal Items The contractor must provide samples of the material to be used for approval when requested. The contractor must also provide the Contractor’s Furnished Material and Equipment lists and Manufacturer’s Equipment Documentation as per section 13551.
Pre-Inspection Items The inspector should ensure that the contractor has submitted all required information to the Engineer. The inspector should review the plans and specifications for locations and types of cabinets and foundations.
Inspection Items The inspector should verify the dimensions, conduits, reinforcing steel and anchor bolts prior to concrete being place for cabinet foundations. Anchor bolts must be a minimum of 6" into the foundation. The inspector must verify that the foundation is placed so that all setbacks from walls, guardrails, poles and other above ground features are maintained. Conduit must extend above the floor of the foundation a minimum of 2". The inspector should coordinate with the materials technician to ensure that all concrete placed for foundations matches an approved mix design for the project and all required sampling and testing of concrete are performed as per MS&T and project specifications. The inspector should verify that maintenance platforms are installed around the foundation if the area is not paved. The inspector must verify hat preformed expansion joint filler is used at concrete joints. Pad mounted cabinets must be installed so that the front face of the control equipment is adjacent to the Type 2 junction box. The cabinet must be securely fastened to the foundation and the door must be able to open and close fully. If anchor bolts are used they must be ¾" X 8" expansion anchor bolt. The vented door of the equipment cabinet should face downstream of traffic. The inspector should verify that the contractor caulks between the base of the cabinet and the foundation.
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Pole mounted cabinets should be fastened so the door of the cabinet opens downstream of traffic. The inspector should verify that the cabinet is fastened to the pole with galvanized bands. The inspector should ensure that holes are drilled and nippled at each site with touch up by the hot-stick method. The inspector should verify that a disconnect or underground service are installed between 10 and 15' from the cabinet. The disconnect must be grounded to a ground rod located in a Type 1 junction box at the cabinet base. Disconnects and transformers must be installed as per AT Series Standard Drawings, SL Series Drawings and the NEC. The cabinet ground must be wired using clamps to the ground in the Type 2 junction box.
Sampling and Testing The inspector should coordinate with the materials technician to ensure that all required concrete sampling and testing are performed on foundations. The inspector should verify that all required sampling and testing are performed by qualified personnel.
Common Issues 1. Use of an unapproved mix design for foundations. 2. Cabinet not anchored to the foundation properly. 3. Cabinet door not able to open and close fully. 13555: ATMS CABINET
Pre-Inspection Verify that the contractor has submitted all materials lists and manufacturer’s instructions to the Engineer. Review plans and specifications for locations and types of cabinets noting required setbacks from walls, poles and other features.
Inspection Verify foundation dimensions, conduits and anchor bolts prior to foundation concrete placement. Verify use of approved mix design concrete and ensure that all required sampling and testing are performed. Verify that the foundation is placed so that all required setbacks are maintained. Verify that the cabinet is fastened to the foundation using anchor bolts embedded at least 6" into concrete. Verify that maintenance platforms are installed if the cabinets are not installed on a paved surface. Verify that pole mounted cabinets are secured using galvanized bands. Verify that poles are drilled and nipples installed at each location. Verify that disconnect or underground service are installed 10' to 15' from cabinet.
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D) RAMP METER SIGNALS
AND
SIGNING – SECTION 13552
Ramp meter Signals and Signing are used to control the flow of traffic onto highways. It is important that signs and signals are positioned properly and function as intended for traffic safety and improved use of the highway.
Submittal Items The contractor must provide samples of materials and equipment used to the Engineer for approval when requested. The contractor must also submit the following items as per section 13551. 1. Contractor furnished Material and equipment lists. 2. Test Reports for the cable and conductor test, the local field operations test, and the 30 day ATMS Burn-in test. 3. Completion notice. 4. Compliance certificate. 5. Manufacturer’s Equipment documentation. 6. As-built drawings with GPS locations. 7. Buy America Certification/Documentation.
Pre-Inspection Items The inspector should verify that the contractor has submitted all required items. The inspector should review plans and specifications for locations and types of signs, signals, conduit, and control cabinets. The contractor should field locate all conduit and junction boxes to avoid drainage areas and steep slopes if possible.
Inspection Items The inspector should inspect the foundations as per section 02466- Drilled Shafts, section 03055 - Concrete, and section 03211 - Reinforcing Steel. The inspector should verify that the installation locations do not interfere with any ground or overhead utilities. The inspector should refer to AT Series Standard Drawings for ramp meter signal assembly and advance warning details and placement.
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The inspector must verify that signal poles are installed as per plans and specifications. The inspector should verify that the pole is leveled and that all fasteners are tightened as per plans and specifications. The inspector should verify that ground rods are installed as per plans and specifications. The inspector must verify that all signs are installed as per section 02891 Traffic Signs. Traffic Signal heads should be inspected as per 02892 Traffic Signals. Signal heads should not be installed until the system is ready for operation. The inspector must inspect the detector loops as per section 02892 and AT Series Drawings. The luminaire must be inspected as per section 16525 Highway Lighting.
Sampling and Testing The inspector should coordinate with the materials technician to ensure that all required sampling and testing is performed on concrete foundations and any required backfill. The inspector should verify that all sampling and testing is performed by qualified personnel.
Common Issues 1. Signs and signals not set at required elevations. 2. Signals not oriented properly for metered traffic. 13552: RAMP METER SIGNALS AND SIGNING Verify that all required submittals have been received. Verify locations and elevations of foundations. Ensure there are no conflicts with under- ground or overhead utilities. Verify that the foundation is placed as per plans and specifications. Verify that the signal poles are installed as per plans specifications and AT Series Standard Drawings. Verify that signs are placed as per plans, specifications and AT Series Standard Drawings.
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E) POLYMER CONCRETE JUNCTION BOX – SECTION 13554 Polymer Concrete junction boxes are used to house a variety of electrical and control connections. Proper placement and connections of the junction boxes are important for long service life and maintenance.
Submittal Items Junction boxes must be submitted with the contractor’s electrical work material list supplied to the Engineer within 15 days of the notice to proceed.
Pre-Inspection Items The inspector should verify that the contractor has included the required polymer concrete junction boxes in his materials list provided to the Engineer. The inspector should review plans and specifications for required locations and types of junction boxes.
Inspection Items The inspector should verify that the junction box is the right size and type of polymer concrete junction box. The junction box must be set on 12" of free draining granular material. Backfill around the junction box must be hand tamped with the top 6" matching the composition, density and elevation of the surrounding surface. The inspector should verify that conduits are installed in junction box as per plans and specifications and AT Series Standard Drawings. Conduit must not be installed within 2" of the corner of the junction box. PVC conduit must extend 2" into the box and HDPE conduit must extend 6" into the box. Conduit should enter the sides of the box and not the bottom. The holes drilled for conduits should be no more than ¼" larger than the conduit. Conduit should be installed in the bottom half of the junction box and at least 3" above the bottom. The inspector should verify that the ground rod is installed as per plans and specifications and that it extends a maximum of 2" above the junction box floor. The inspector should verify that that concrete collars are placed around all junction boxes except where junction boxes are placed in concrete paved surfaces. The inspector should verify
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that ½" expansion material is fastened to the junction box prior to placing concrete around junction box. The inspector should verify that all areas damaged by the installation of the junction box are restored.
Sampling and Testing The inspector should coordinate with the materials technician to ensure that all required sampling and testing is performed on concrete placed around junction boxes and density testing on any required backfill greater than the area excavated for the junction box. The inspector should verify that all sampling and testing is performed by qualified personnel.
Common Issues 1. Junction box not placed flush with surrounding material. 2. Expansion strip not placed securely around junction box. 3. Junction boxes not labeled appropriately for the application. 13554: POLYMER CONCRETE JUNCTION BOX Verify that all required submittals have been received. Verify locations and elevations of junction boxes. The boxes may be field located to avoid drainage areas and steep slopes. Verify that junction box is placed on granular base and backfilled with native or granular material that is hand tamped. Verify that the appropriate lid lettering is used. Verify that conduits are installed as per AT Series Standard Drawings. They must be placed 2" from corners, in the bottom half of the box at least 3" above the bottom of the box. Verify that conduit holes are no more that ¼" larger than the conduit and are grouted after conduits are installed. Verify that conduits stub into box 2" for PVC and 6" for HDPE. Verify that the ground rod is installed as per plans and specifications. Verify that areas damaged due to installation are restored. Verify that expansion strip is installed between junction box and concrete collars or concrete paving.
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F) CLOSED CIRCUIT TELEVISION (CCTV) ASSEMBLY – SECTION 13556 Closed Circuit Television Assemblies are used to monitor traffic. They are mounted to poles set on foundations to provide visibility of traffic at desired locations.
Submittal Items The contractor must provide the Engineer the following submittals as described in Section 13551. 1. Contractor furnished Material and Equipment Lists. 2. Test Reports for the Cable and Conductor Test, the Local Field Operations Test, and the 30 Day ATMS Burn-In Test. 3. Completion Notice. 4. Manufacturer’s Equipment Documentation. 5. As-Built Drawings with GPS locations. 6. Buy America Certifications/Documentation.
Pre-Inspection Items The inspector should verify that all required submittals have been received. The inspector should review plans and specifications for locations and types of Closed Circuit Television mounting including foundations, poles, mounting and lowering assemblies.
Inspection Items The inspector should verify the locations of foundations. Foundations must be placed as per plans and specifications without conflicts with underground or overhead utilities. The inspector should verify that the foundations are installed as per sections 02466- Drilled Shafts and 03310- Structural Concrete. The inspector should verify that anchor bolts are installed as per Section 13551- General ATMS Requirements.
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The inspector must verify that the correct pole is installed as per plans and specifications. The inspector should verify that the pole is installed with the hand hole away from traffic is leveled and fastened as per plans and specifications. The pole should be plumb with all camera equipment installed. The pole must be grounded to a control cabinet or junction box ground rod within 20' of the pole. The inspector should verify that all test reports are received.
Sampling and Testing The inspector should coordinate with the materials technician to ensure that all required sampling and testing of concrete for foundations. The inspector should verify that all required density testing is performed on backfill prior to excavation. The inspector should verify that all sampling and testing is performed by qualified personnel.
Common Issues 1. Foundations placement and mounting bolts at the wrong elevations. 2. Incorrect foundation bolt pattern for mounting. 13556: CCTV ASSEMBLY
Pre-Inspection Review plans and specifications for locations and types of CCTV foundations and poles.
Inspection Verify locations of foundations and poles avoiding conflicts with underground and overhead utilities. Verify that foundations are installed as per sections 02466 and 03310. Verify that correct pole is installed and fastened as per plans and specifications. Verify that pole is plumb with the hand hole away from traffic. Verify that all test reports are received.
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G) ATMS POWER SERVICE – SECTION 13561 ATMS power services provide power to the ATMS system from the local power provider. The contractor install all required equipment in the location provided by the power company and the utility company makes the final connection.
Submittal Items The contractor must submit all documentation in accordance with Section 13551.
Pre-Inspection Items The inspector should verify that the contractor has made all required submittals. The inspector should review plans and specs for locations of power services.
Inspection Items The inspector should verify that the contractor has completed power service as per plans and specifications. If wood poles are used the inspector should verify that they are below grade to a minimum depth of 1/6 the pole height. If backfill material is required it should be placed in 1' lifts and compacted to 90%.
Sampling and Testing The inspector should coordinate with the materials technician to ensure that all required density testing is performed on backfill. The inspector should verify that all density testing is performed by qualified personnel.
Common Issues 1. Backfill not properly compacted. 2. Submittal requirements have not been met. 13561: ATMS POWER SERVICE
Pre-Inspection Review plans and specifications for locations and types of power service.
Inspection Verify that contractor has installed power service as per plans and specifications. If a wood pole is required ensure that it is buried 1/6 its total height. Verify that backfill is placed in 1' lifts and compacted to 90%.
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H) FIBER OPTIC COMMUNICATION – SECTION 13594 Fiber Optic Communication cables are capable of transferring large amounts of information at one time. The installation and splicing of the cables require skill and attention to ensure that the fiber optic system performs as intended.
Submittal Items 1. The contractor must submit all documentation in accordance with Section 13551. 2. The contractor must provide Qualified Fiber Optic Technician Resume and Certificate and furnish evidence if training and experience for all staff. 3. Required Pre-Construction Submittal that covers construction and installation procedures for all aspects of fiber optic cable installation. 4. Required Post Construction Final Submittal including ODTR Test Results, Power Meter/ Light Source Test Results and all require fiber tests with as built plans as per section 13551.
Pre-Inspection Items The inspector should verify that the contractor has made all required submittals.
Inspection Items The inspector should verify that all fiber optic work is performed by qualified staff. The inspector should verify that all splicing is performed in a controlled environment.
Sampling and Testing Materials Sampling and Testing are not required on the Fiber Optic System.
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Pre-Inspection Verify that the contractor has submitted all required documentation.
Inspection Verify that qualified personnel are performing work on fiber optic system. Verify that splicing is performed in a controlled environment.
I) ATMS INTEGRATION – SECTION 13595 ATMS systems must be integrated into a complete system that works to improve and manage traffic flow. It is important that all systems work together as designed and that the system is tested and verified to be a complete and operational system. Testing is performed by UDOT signal division or approved contractor.
Submittal Items The contractor must submit all documentation in accordance with Section 13551.
Pre-Inspection Items The inspector should verify that the contractor has made all required submittals.
Inspection Items Inspection and testing of ATMS Integration is performed by UDOT Signal Division or approved contractor. The inspector should verify that inspection and testing are performed with results of the Local Field Operations Tests and 30 Day Burn In Tests submitted to the Engineer.
Sampling and Testing Materials Sampling and Testing are not required for ATMS Integration.
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Common Issues 1. Submittal requirements have not been met. 2. Required testing has not been performed. 13595: ATMS INTEGRATION
Pre-Inspection Verify that contractor has made all submittals as per Section 13551.
Inspection Verify that inspection and testing are performed by appropriate personnel. Verify that the test report for the 30 day Burn in Test are submitted to the Engineer.
7.3 TRAFFIC MESSAGING AND MONITORING
A) VARIABLE MESSAGE SIGN – SECTION 13557 Variable Message Signs are used to notify motorists of conditions and improve traffic flow. The signs are often accessed by a catwalk used for maintenance. It is important that all features of the variable message sign are installed properly to ensure service life and maintenance.
Submittal Items The contractor must provide samples of materials and equipment used to the Engineer for approval when requested. The contractor must also submit the following items as per section 13551. 1. Contractor furnished Material and equipment lists. 2. Test Reports for the cable and conductor test, the local field operations test, and the 30 day ATMS Burn-in test. 3. Completion notice. 4. Compliance certificate. 5. Manufacturer’s Equipment documentation. 6. As built drawings with GPS locations. 7. Buy America Certification/Documentation. Page | 28
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Pre-Inspection Items The inspector should verify that the contractor has made all required submittals. The inspector should review type, size and location of variable message signs, structures and foundations.
Inspection Items The inspector must inspect the foundation and structure installed for the variable message sign as per Section 02893- Overhead Sign Structure. Ground mounted signs may be installed as per SL Series Standard Drawings. The inspector should verify that the variable message sign is installed as per plans and specifications including all required fasteners. The inspector should verify that the catwalk is installed as per plans and specifications including all fasteners. The inspector should verify that the sign is set to be perpendicular to motorists 800' before the sign. The inspector should verify that the sign meets minimum requirements for height above roadway. The inspector should verify that the contractor has a traďŹƒc control plan for the installation of sign and catwalk and that the traďŹƒc control plan is followed. The inspector should verify that the work area is restored to its original condition after installation of sign. The inspector should verify that the contractor submits all required test reports.
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Sampling and Testing The inspector should coordinate with the materials technician to ensure that all required concrete testing is performed on the sign foundation. The inspector should verify that all sampling and testing are performed by qualified personnel.
Common Issues 1. Hardware and fasteners not properly installed. 2. Sign elevation does not meet minimum requirements for distance above roadway. 13557: VARIABLE MESSAGE SIGN
Pre-Inspection Review plans and specifications for locations and types of foundations, structures, signs and catwalks. Verify that the contractor has made all required submittals.
Inspection Verify that foundations are inspected as per Section 02893. Verify that sign and catwalk are installed as per plans and specs including all required fasteners and hardware. Verify that sign elevation meets minimum required height. Verify that the work area is restored to its original condition. Verify that the traffic control plan for installation of sign and catwalk are followed.
B) HIGHWAY ADVISORY RADIO (HAR) PREPARATION – SECTION 13558 Highway Advisory Radio is used to inform motorists of construction or traffic conditions. The HAR system is provided by the State and installed on a wood pole by the contractor
Submittal Items The contractor must provide the Engineer the following submittals as described in Section 13551. 1. Contractor furnished Material and Equipment Lists. 2. Test Reports for the Cable and Conductor Test, the Local Field Operations Test, and the 30 Day ATMS Burn-In Test. 3. Completion Notice. 4. Manufacturer’s Equipment Documentation. 5. As Built Drawings with GPS locations. Page | 30
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Pre-Inspection Items The inspector should verify that all required submittals have been received. The inspector should review plans and specifications for location of HAR pole and assembly.
Inspection Items The inspector should verify that the contractor installs wood pole and HAR assembly as per plans and specifications. The pole must be buried 1/6 its total height with an extra 1 diameter of depth from the low slope side if placed on a slope greater than 2:1. Any required backfill should be native material placed in 1' lifts and compacted to 90 percent of maximum. The inspector should verify that the junction box and ground rod required for connection are installed as per Section 13554.
Sampling and Testing The inspector should coordinate with the materials technician to ensure that all required density testing on backfill is performed on backfill as per plans and specifications and MS&T requirements. The inspector should verify that testing is performed by qualified personnel.
Common Issues 1. Pole not installed to proper depth especially on slopes greater than 2:1. 2. Backfill around pole not compacted to required density. 13558: HAR PREPARATION
Pre-Inspection Review plans and specifications for location of HAR poles.
Inspection Verify that the HAR pole is installed to a depth of 1/6 its total height. Verify that all required backfill is placed in 1' lifts and compacted to 90%. Verify that HAR assembly including junction box and ground rod are installed. Verify that all required density testing on backfill is performed. Verify that all test reports are received.
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C) NON-INTRUSIVE DETECTOR (NID) SYSTEM – SECTION 13559 Non-Intrusive Detection Systems are used to detect traffic. They are pole mounted and require no road cutting or other destructive installation.
Submittal Items The contractor must provide the Engineer the following submittals as described in Section 13551. 1. Contractor furnished Material and Equipment Lists. 2. Test Reports for the Cable and Conductor Test, the Local Field Operations Test, and the 30 Day ATMS Burn-In Test. 3. Completion Notice. 4. Manufacturer’s Equipment Documentation. 5. As Built Drawings with GPS locations.
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Pre-Inspection Items The inspector should verify that the contractor has made all required submittals to the Engineer.
Inspection Items The NID system may be mounted to Luminaire poles, CCTV poles or Signal Luminaire extension. The inspector must verify that poles are installed as per plans and specifications. Refer to SL Series Standard Drawings, AT Standard Drawings and appropriate Section 16525 for pole installation details. The inspector should verify that the NID System is installed. The inspector should verify that required inspection and testing are performed with the test results submitted to the Engineer.
Sampling and Testing Materials Sampling and testing are not required on the NID System.
Common Issues 1. Submittal requirements have not been met. 2. Required system testing not performed. 13559: NID SYSTEM
Pre-Inspection Verify that the contractor has made all required submittals.
Inspection Verify that the pole is installed as per SL Series Standard Drawings and Section 16525. Verify that the NID System is installed. Verify that all required inspection and testing are performed with the results submitted to the Engineer.
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D) TRAFFIC MONITORING DETECTOR LOOP – SECTION 13591 Traffic Monitoring Detector Loops are installed in saw cuts in the roadway and are used to detect traffic for signals. The detector loops must operate as intended for the signal system to function properly.
Submittal Items The contractor must provide the Engineer the following submittals as described in Section 13551. 1. Contractor furnished Material and Equipment Lists. 2. Test Reports for the Cable and Conductor Test, the Local Field Operations Test, and the 30 Day ATMS Burn-In Test. 3. Completion Notice. 4. Manufacturer’s Equipment Documentation. 5. Certified test report of detector lead-in cable compliance as specified IMSA 50-2.
Pre-Inspection Items The inspector should verify that the contractor has made all required submittals to the Engineer.
Inspection Items The inspector should verify that all saw cutting for the Traffic Monitoring Detector Loop are made according to plans and specifications. Saw cuts are not allowed to cross transverse joints in the travelled way. Saw cuts and transverse joints must be a minimum of 1.5' apart. Loop spacing must be 21.5' apart between leading edges with a tolerance of 1". The inspector should verify that saw cutting water and residue is prevented from flowing into live traffic lanes. Refer to SL Series Standard Drawings for loop shapes and details. The inspector should verify that all required inspection and testing are performed on the electrical system with the results given to the Engineer.
Sampling and Testing Materials Sampling and testing are not required on the Traffic Monitoring Detector Loop System.
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Common Issues 1. Saw cutting material not cleaned or remove adequately. 13591: TRAFFIC MONITORING DETECTOR LOOP
Pre-Inspection Verify that the contractor has made all required submittals.
Inspection Verify that saw cutting matches plans and specifications. Refer to SL Series Standard Drawings. Verify that detector loops are installed as per plans. Verify that all required system testing is performed with the result given to the Engineer.
E) ROADWAY WEATHER INFORMATION SYSTEM: ENVIRONMENTAL SENSOR STATION – SECTION 13592 RWIS-ESS consists of a tower and equipment installed by the Department on a concrete foundation and base installed by the contractor.
Submittal Items The contractor must supply a preliminary installation schedule to the Engineer 30 days before the start of work. The Engineer should approve the site prior to the start of work.
Pre-Inspection Items The inspector should verify that the location and schedule have been approved by the Engineer.
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Inspection Items The inspector must inspect the foundation installation as per sections 03055- Portland Cement Concrete, 03310- Structural Concrete and 03211- Reinforcing Steel and Welded Wire. The inspector should coordinate with the materials technician to ensure that all required concrete sampling and testing are performed. The inspector should verify that the anchor bolts are installed as per plans and specifications. The inspector should verify that concrete pad is placed around foundation as per plans and specifications. Refer to AT Series Standard Drawings for details on foundation and fence. The inspector should verify that ground rods and wires are installed as per specifications and AT Series Standard Drawings. The inspector must verify that the required fence is installed as per AT Series Standard Drawings and Section 02821. The fence must be a 7' high fence with barbed wire, arms and gate. The inspector must verify that the contractor installs the tower base only with all required fasteners as per AT Series Standard Drawings.
Sampling and Testing The inspector should coordinate with the materials technician to ensure that all required concrete sampling and testing are performed as per project specifications and MS&T requirements. The inspector should also coordinate with the materials technician to ensure that all required soil density tests are performed as per project specifications and MS&T requirements. The inspector should verify that all sampling and testing are performed by qualified personnel.
Common Issues 1. Grounding not connected as per Standard Drawings. 13592: ROADWAY WEATHER INFORMATION SYSTEM - ENVIRONMENTAL SENSOR
Pre-Inspection Verify that the contractor has notified the Engineer of the schedule. Verify that the location of the base and tower have been approved by the Engineer.
Inspection Verify that foundation is constructed as per AT Series Standard Drawings. Verify that anchor bolts are installed as per plans and specifications. Verify that concrete pad is placed as per plans and specifications. Verify that junction boxes and ground rods are installed as per plans and AT Series Standard Drawings. Verify that the tower base is installed and fastened as per plans and specifications. Verify that the 7' high fence is installed around tower with barbed wire, arms and gate as per plans and specifications.
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F) WEIGH
IN
MOTION – SECTION 13593 Concrete slab jacking includes the pressurized injection of a product to raise and support a Weigh in motion systems are capable of detecting the weight of traffic without having the vehicle stop on a scale. The system is provided by the Department and installed as per manufacturer’s instructions by the contractor.
Submittal Items The contractor must provide the Engineer the following submittals as described in Section 13551. 1. Contractor furnished Material and Equipment Lists. 2. Test Reports for the Cable and Conductor Test, the Local Field Operations Test, and the 30 Day ATMS Burn-In Test and Piezo calibration. 3. Completion Notice. 4. Manufacturer’s Equipment Documentation. 5. As-Built Drawings with GPS locations. 6. A Compliance Certificate from the piezo manufacturer for site acceptability.
Pre-Inspection Items The inspector should verify that the contractor has made all required submittals to the Engineer.
Inspection Items The inspector should verify that the contractor performs concrete cutting and drilling as per specifications and manufacturer’s installation instructions. The slot must be straight, ¾" by ¾" and cut in one pass. Holes must be ½" diameter X 2" deep on a 45 angle as per AT Series Standard Drawings. The saw cuts must be at
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least 12" from concrete joints. The slots must be clean and dry prior to placing piezo. Lead in wires must be saw cut ½" wide and 3.25" to 6" deep. All lead ins must be downstream of piezo. The inspector should verify that the contractor installs control cabinets and conduits as per sections 13553 and 1355. The inspector should verify that piezo calibration is performed according to manufacturer’s specifications. The inspector should verify that the system is tested with results submitted to the Engineer.
Sampling and Testing Materials Sampling and testing are not required on the Weigh in Motion System.
Common Issues 1. Submittal requirements have not been met. 2. Required testing not performed.
13593: WEIGH IN MOTION
Pre-Inspection Verify that the contractor has made all required submittals.
Inspection Verify that saw cutting and drilling are performed as per AT Series Standard Drawings and manufacturer’s instructions. Verify that lead in wires are installed as per plans and specifications. Verify that piezo calibration is performed as per manufacturer’s specifications. Verify that system tests are performed with results submitted to the Engineer.
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Construction Inspection Guide Chapter Links
1-Preface & Introduction
2-Traffic Control
3-Demolition and Earthwork
4-Drainage
5-Pavement & Materials
6-Structures
7-Traffic Signals, Lighting, ATMS
8-Striping, Signing, Safety Features
9-Landscaping, Fencing, Incidental Const.
10-Utilities
11-PDBS
12-Crash Cushion & Barrier End Treatments
Construction Inspection Guide
udot.utah.gov/go/construction