641-1 Description.
Furnish and install prestressed concrete poles as shown in the Plans . Obtain precast, prestressed concrete poles from a manufacturing plant that is currently on the Department’s Production Facility Listing. Producers seeking inclusion on the list shall meet the requirements of Section 105. Ensure that each pole is constructed and permanently and legibly marked in accordance with Standard Plans, Index 641-010, including the date c ast. Concrete closed circuit television (CCTV) poles must be constructed and permanently and legibly marked in accordance with Standard Plans , Index 641-020, unless shown otherwise in the Plans. The marking shall be visible after installation. Ensure that the shipment of the products to the job site meets the requirements of
450-16.3 and Section 105.
641-2 Materials.
641-2.1 Poles: Meet the following requirements:
Portland Cement Concrete * ............................... Section 346 Reinforcing Steel ................................ ......................... 931-1 Prestressed Strands ................................ ....................... 933-1 Spiral Reinforcing ................................ ...........ASTM A1064 * Class VI
641-2.2 Camera Lowering Device : Use lowering devices that meet the requirements of
Section 996 and are listed on the Department’s Approved Product List (APL).
641-2.2 1 Connector Block: Lubricate all components, including the connector
block and contacts, in accordance with the manufacturer’s recommendation s.
641-2.2 2 Lowering Tool: Provide a min imum of one lowering tool and any
additional tools as required in the Plans. Deliver the lowering tool to the Department before final acceptance.
641-2.2 3 Wiring: All wiring must meet NEC requirements and be installed in
accordance with the equipment ma nufacturers’ recommendations for each device connected on the pole, at the lowering device, and in the field cabinet.
641-2.2 4 External-Mount Lowering System Enclosure for Mounting to
Existing Structures: The cabinet must allow for unobstructed operatio n of the winch, access for servicing and provide sufficient clear area for operation of the winch manually and with an electric drill. Include a pin tumbler lock keyed for use with a No. 2 key and two keys, unless otherwise directed by the Plans. Provide all necessary mounting hardware, conduits, standoffs, and conduit mounts required for a complete and functional system.
641-3 Concrete Pole Construction.
Construct concrete poles in accordance with Section 450. Assume responsibility for performance of all quality control testing and inspections required by Sections 346 and 450; however, the PCI personnel certifications are not required. Plant certification, in accordance with Section 105, is not required for plants that manufacture prestressed concrete pol es. FY 2023-24 Return to Table of Contents
641-4 Installation Requirements.
641-4.1 General: Furnish poles of the type and length shown in the Plans. Provide
catenary cable of the size shown in the Plans. Ground poles in accordance with Section 620. Install span wire assemblies in accordance w ith Section 634. Do not consider the poles acceptable for use if the camber of the pole, measured as the maximum deviation between the centerline of the pole and a straight line connecting the centroids of the cross -sections at each end of the pole, is g reater than the total pole length in inches divided by 140.
641-4.2 Foundation s: Provide fo undations 3 feet 6 inches in diameter and of the depth
specified in the Plans for strain poles used for span wire support of traffic signals. Provide foundations for concrete CCTV poles in accordance with Standard Plans, Index 641-020. Provide foundations for all other pole applications as specified in the Plans. Construct the foundation with concrete as specified in Section 347. For the excavation and backfill of the foundation, meet the requirements specified in 125-4 and 125 -8.2 with the exception of the backfi ll density. In lieu of the requirements for obtaining the specified density, the Contractor may hand tamp the backfill in 4 inch maximum layers or machine tamp the backfill in 6 inch maximum layers. When performing such operations, ensure that the material is neither dry nor saturated. The Contractor may backfill with concrete. Use forms, when required, meeting the requirements of 400 -5. If the foundation is cast in an oversize hole, place the concrete in the top 6 inches in a form. Trowel all exposed surfaces to a smooth finish.
641-4.3 Orientation of Poles: For poles supporting one catenary wire, orient the pole so
that the load face is perpendicular to the catenary wire. For poles supporting two catenary wires, orient the pole so that the load face is perpendicular to a line bisecting the angle between the two catenary wires. Rake pole back from the span wire as necessary to achieve a final rake of 1/2 inch per foot, plus or minus 1/4 inch.
641-4.4 Camera Lowering Device: Install the lowering device in a manner that does not
place the operator directly under the device when it is being raised or lowered. Submit documentation showing connector block pin assignment for approval prior to installation. The divided support arm and receiver brackets must self-align the contact unit with the pole centerline during installation. Additionally, the lowering device support arm must self-align the disconnect unit and attached device with the pole centerline and remain centered after installation , without moving or twisting. House the stainless steel lowering cable inside 1.25 inch PVC conduit and provide a conduit mount adapter for the interface between the conduit and the internal back side of the lowering device. The connection between the lowering device and tenon must be weather resistant. Use conduit straps to secure lowering cable conduit to the p ole for externally mounted lowering systems. Stainless steel bands will not be allowed . Ensure that only the lowering cable is in motion inside the pole when the lowering device is operated. All other cables must remain stable and secure during lowering an d raising operations. Label all wire leads with their function, label spares as spares. Install the correct length of lowering cable to prevent cable slack and to prevent the cable from jumping off the winch spool. The lowering cable strands must not twist or unwind when the lowering device is operated. FY 2023-24 Return to Table of Contents Ensure that crimps and other cable connection hardware associated with the lowering cable do not come in direct contact with the winch tool or guides when operating the system. Furnish the Engineer with the manufacturer recommended field installation instructions, inspection instructions (including recommended schedules and procedures), and operating instructions.
641-5 Pole Removal.
When removal of the pole and partial foundation removal is specified in the Plans, the remaining pole, foundation and any protrusions, such as pole keys, dead men, guying apparatus, conduit, anchor bolts, or reinforcing steel, must be removed to a minimum depth of 4 feet below existing grade. When removal of the pole and com plete foundation removal is specified in the Plans completely remove each pole including the foundation and all accessories and attachments, such as pole keys, dead men, guying apparatus, conduit, anchor bolts, and reinforcing steel. Disconnect span wires carefully at the pole, and salvage all usable hardware and attachment devices as determined by the Engineer. Remove all devices supported by the span wire (including wiring) prior to the removal of the span wire.
641-6 Method of Measurement.
641-6.1 General: Measurement for payment will be in accordance with the following
work tasks.
641-6.2 Furnish and Install: The Contract unit price for prestressed concrete poles,
furnish and install, will consist of the pole plus all labor, concrete for the found ation and other materials necessary for a complete and accepted installation as specified in the Contract Documents.
641-6.3 Pole Removal :
641-6.3 1 Pole Removal Partial: The quantity to be paid for will be the removal
of each pole, including the found ation and all accessories and attachments, to a depth of not less than 4 feet below existing grade.
641-6.3 2 Pole Removal Complete : The quantity to be paid for will be the
complete removal of the pole, foundation and all accessories and attachments.
641-7 Basis of Payment.
Price and payment will be full compensation for all work specified in this Section. Payment will be made under: Item No. 641 - Prestressed Concrete Poles - each. Item No. 641 - Concrete CCTV Pole - each. FY 2023-24 Return to Table of Contents SECTION 646 ALUMINUM POLES , PEDESTALS, AND POSTS
646-1 Description.
The work in this Section consists of furnishing and installing aluminum poles, pedestals, and posts at the locations shown in the Plans and in accordance with the details shown in the Plans and Standard Plans , subject to a five -year warranty period as defi ned herein. The warranty period will apply only when aluminum poles, pedestals, and posts are painted as called for in the Contract Documents. An aluminum pedestal consists of a pole and a transformer base.
646-2 Materials.
Meet the following requirements: Portland Cement Concrete* ................................ Section 346 Anchor Bolts and Shims ................................ .....Section 962 Poles and Posts ................................ .................... Section 965 Transformer Base** ................................ ............Section 965 *Class II **Use products listed on the Department’s Approved Products List (APL)
646-2.1 Poles and Posts: Poles used w ith transformer bases must be threaded with No. 8
NPT threads. Sufficient threads are required to fully seat the pole into the hub of the pedestal base.
646-2.2 Anchor Bolts: Provide Grade 55 anchor bolts, 3/4 -inch diameter, 18 -inches
long, with double nu ts. For each bolt, provide two 3/4 -inch heavy hex nuts and one 3/16 -inch thick by 3 -inch round plate washer or one Type 1 washer.
646-2.3 End Caps: Provide end caps sized for nominal 4 -inch Schedule 40 4-1/2-inch
outside diameter aluminum poles. The cap m ust be a minimum of 1/4 -inch thick and tapped for at least two set screws. Set screws will be provided with the end cap.
646-2.4 Shims: Provide U -shaped galvanized steel shims 2 -inches wide by 2 -1/2 inches
long, shaped to fit around a 3/4 -inch anchor bolt .
646-3 Coatings.
646-3.1 Painting:
646-3.1 1 General: When required by the Contract Documents, provide painted
aluminum poles, pedestals, and posts . Provide products that will meet specification requirements throughout the warranty period. Meet the col or requirement as specified in the Contract Documents. Provide the Engineer with two metal sample coupons, a minimum of 2 inches by 4 inches, painted concurrently and with the same paint as was used on the first LOT of any aluminum poles, pedestals, and po sts delivered to the jobsite. Submit sample coupons and manufacturer product data sheets to the Engineer along with the delivery of the first shipment of any painted aluminum poles, pedestals, and posts delivered to the jobsite. At the time of their delivery, the sample coupons described in this paragraph must match the color of the aluminum poles, pedestals, and posts to within 1ΔE measured as specified in 9 75-4. If the delivered sample coupons exhibit a difference in color from the poles, pedestals, and p osts greater than 1ΔE then the sample coupons will be considered unacceptable and no payment shall be made for the materials which the sample coupons represent. Those materials shall not be accepted by the Department until acceptable representative sample coupons in accordance with the requirements of this Section have been submitted to the Engineer. FY 2023-24 Return to Table of Contents