Pole and Tower Art. 1069.01 Each photocell furnished for waterway or aviation obstruction lighting control shall be calibrated according to Article 1068.01(e)(2)h. SECTION 1069. POLE AND TOWER
1069.01 Light Poles. All light poles shall be designed, fabricated, and
furnished to provide a complete support system as follows. The detailed design and fabrication of the pole shaft, arms, tenons, and attachments shall be according to AASHTO “Standard Specifications for Structural Supports for Highway Signs, Luminaires and Traffic Signals, Sixth Edition 2013”. Light poles shall be designed for 90 mph (145 km/hr) wind velocity and a minimum design life of 50 years.
a.Loading. The following loading requirements shall include all possible luminaire and arm combinations up to and including the limits given. All other light pole configurations shall require the Contractor to submit for approval, detailed design calculations of each light pole including arm(s), luminaire(s), and any other attachments.
1.Poles with Arms. Poles with arms shall be designed and manufactured to withstand loadings of up to and including a 40 lb (18 kg) luminaire having an effective projected area of 1.6 sq ft (0.15 sq m) on a single 4 to 15 ft (1.2 to 4.5 m) arm, and shall also withstand loadings of up to and including the same luminaire on each of two 4 to 12 ft (1.2 to 3.6 m) arms (twin) oriented 180 degrees apart, meeting the criteria of AASHTO as specified above.
2.Poles with Tenon Tops. Tenon top poles shall be designed and manufactured to withstand loadings of up to and including twin 100 lb (45 kg) luminaires having an effective projected area each of 3.85 sq ft (0.36 sq m) on a twin tenon bracket. The tenon at the top of the pole shall meet AASHTO loading requirements for twin luminaires as specified above. The pole shall be designed to withstand wind induced vibrations in the shaft and arm(s) so that no damage occurs to the shaft, arm(s), luminaire(s), and/or their component parts. The pole shall be coordinated with all luminaires to be free of susceptibility to harmful harmonics and vibrations. A dampening device, as an integral part of the shaft, shall be installed in the shaft to alleviate such vibrations in aluminum poles and all other poles as necessary. The proposed vibration dampening device shall be included with the Contractor’s submittal. Deflection of the pole top as caused by the combined effect of wind and deadload referenced above shall be as required by AASHTO “Structural Supports for Highway Signs, Luminaires, and Traffic Signals, Sixth Edition 2013”. Pole deflection and loading compliance, certified by the manufacturer, shall be noted on the pole submittal. Art. 1069.01 Pole and Tower
b.Mounting Height. The mounting height, for the purposes of pole fabrication, shall be defined as the vertical dimension between the bottom of the pole base plate to the center of the outboard end of the tenon on the arm(s). The mounting height for tenon top poles shall be to the top of the shaft. Breakaway devices shall not be included in the mounting height.
c.Shaft Design. The pole shall be designed with a minimum wall thickness to satisfy all design loading requirements. However, in no case shall the pole shafts have a wall thickness less than those shown on the plans. Reinforcing sleeves shall not be used. Poles shall be straight with the centerline alignment not varying along the pole by more than 1/4 in./10 ft (6 mm/3 m) of pole length and not to vary by more than 0.1 percent of total pole height. The shaft shall be smooth circular (or nearly circular multi-sided), tubular, tapered design.
d.Pole Base. The base shall be welded to the bottom portion of the shaft. Anchor rod slots shall be provided in the base to accommodate the required bolt circle diameter. Each base shall be equipped with four separate anchor rod covers. The covers shall be permanently attached and fit snuggly to prevent rodent entry. On weathering steel poles, the covers shall not be in contact with the pole shaft.
e.Handhole. The pole shall have a reinforced handhole opening in the shaft as shown on the plans. The handhole frame shall be welded to the shaft. The handhole cover shall be fastened to the frame utilizing flat, tamper resistant, pin-head drive screws. The screws shall be Type 304 stainless steel, of sufficient length and shall be well coated with anti-seize compound.
f.Tenons. The tenon shall be coordinated with the luminaires being furnished for the contract so no more than 2 in. (50 mm) of the tenon is exposed.
g.Manufacturer Identification. Each pole shall have the manufacturer, lot number, pole length, and date of manufacture permanently stamped on the top of the base plate or other location approved by the Engineer.
h.Finish. Poles, arms, and attachments shall all be the same color and finish. All exposed surfaces shall be of a smooth, even texture, free from dents, kinks, ripples, imperfections, scratches, marks or other defects. Aluminum and stainless steel poles shall not be painted. Except for weathering steel poles, steel poles shall not be painted unless they have been hot-dip galvanized and the zinc surface has been specially prepared to accept paint.
i.Hardware. Hardware for aluminum poles shall be anodized aluminum alloy according to ASTM B211, 6061-T6 or Type 304 stainless steel. Hardware for steel poles shall be Type 304 stainless steel. All stainless steel hardware shall be coated with anti-seize compound. Pole and Tower Art. 1069.02
j.Shipping. The pole shafts shall be shipped in bundles without any wrapping on the individual shafts or the entire bundle. Appropriate bundling materials shall be used to make a rigid, long lasting bundle capable of being handled, shipped and stored without shifting or breaking of contents.
1069.02 Aluminum Pole. Only aluminum poles with mounting heights of 40 ft
(12 m) or greater may have a two piece shaft. Also, aluminum davit arm poles shall be a two piece pole (upper arm and lower shaft). Aluminum tubing shall be according to ASTM B 221 (B 221M) or ASTM B 429 (B 429M), alloy 6063-T6. The handhole frame for aluminum poles shall be fabricated from ASTM B 209 (B 209 M), alloy 6061 T651 or the same material used for the pole base. The base shall be a permanent mold casting of aluminum alloy according to Aluminum Association designations 356.0 or A356.0, with final temper T6 or T61. Tempers selected shall depend on forming practices of the pole manufacturer to satisfy the requirements of Article 1069.01(a). Welding shall be by inert gas shielded arc (GMAW or GTAW). All welds shall be free from cracks and pores. All poles shall be heat treated after welding. The shaft shall be spun drawn to a smooth, circular, seamless taper. All aluminum poles shall have a satin ground finish, 100 grit or finer. The anchor rod covers shall be made from aluminum, according to ASTM B 108, alloy A356.0-T1, or ASTM B 26, alloy 443.0-F. A nonmetallic anchor rod cover shall be used in high vandalism areas as approved by the Engineer.
a.Mast Arm Style.
1.Arm. The mast arm shall be a truss style arm with upper and lower chord and reinforcing (bracing) members. The top chord of the arms shall have raceway openings extending through the bracket. Raceway openings shall be free of burrs and rough edges that may be injurious to the wires. Exterior surfaces of the truss arms shall be free of all protuberances, dents, cracks, or other imperfections. The truss arm shall be made of aluminum alloy tube, round, seamless, according to ASTM B 221, 6063 T6. The truss arms shall be supplied with fabricated aluminum brackets welded to the arms. All welds shall be heat treated after welding. The arms shall attach to the shaft by a clamp type bracket with hot-dip galvanized bolts, nuts, and lock washers meeting the requirements of
Article 1006 — 08(b).
2.Pole Cap. Top of the shaft shall be enclosed with a removable aluminum cap of the same thickness as the pole shaft. The design of the cap shall be such that it shall not permit entry of water into the shaft. Art. 1069.03 Pole and Tower
3.Grommets. Grommeted openings at the top portion of the shaft shall be provided for wiring purposes through the top member(s) of the mast arm(s).
b.Davit Style. Each pole shall be a two piece assembly consisting of a round lower pole shaft and a round upper davit arm section. The pole-arm assembly shall be part of a coordinated system with components designed such that a common lower shaft will accept a variety of different length davit arms as follows. 4 ft (1.2 m) single 6 ft (1.8 m) single 8 ft (2.4 m) single 10 ft (3.0 m) single 12 ft (3.6 m) single 15 ft (4.5 m) single 4 ft (1.2 m) twin 6 ft (1.8 m) twin 8 ft (2.4 m) twin 10 ft (3.0 m) twin 12 ft (3.6 m) twin Davit arms of various arm lengths shall be suitable for the lower shaft, regardless of mounting height and the limitation of types. The bend shall be carefully made so that the arm is free of kinks, wrinkles or other defects. The davit arm, regardless of mounting height, shall be designed to slip fit over the lower pole shaft to provide a smooth, seamless transition. Submittal information shall include details of the slip joint. The arm shall be coordinated with the luminaire furnished and produce a level mounting of the luminaire (up tilt not greater than 1.5 degrees) with the luminaire installed. Submittal information shall include confirmation of this coordination.
1069.03 Steel Pole. One-piece poles shall be furnished according to the
following. Galvanized steel poles shall be according to ASTM A 595, Grade A or B, ASTM A 572 Grade 55, or ASTM A 1011 Grade 55 HSLAS Class 2. The base plate shall be AASHTO M 270 Grade 50 or 50S (M 270M Grade 345 or 345S). The handhole frame and pole tenon shall be ASTM A 500 Grade C or ASTM A 513 Type 5 DOM1015 or 1020 tubing. The poles shall be galvanized according to AASHTO M 111. Steel selected shall have a silicon content less than 0.25 percent. The outer galvanized surfaces shall have a satin finish. Stainless steel poles shall be according to ASTM A 269, Grade TP 304L cold finished stainless steel, with a minimum yield strength of 60,000 psi (414,000 kPa) and 100,000 psi (689,000 kPa) minimum tensile strength after fabrication. The base plate and handhole frame shall be the same material as the pole. Pole and Tower Art. 1069.03 Weathering steel poles shall be according to ASTM A 595 Grade C, ASTM A 606 Type IV, or AASHTO M 270 Grade 50W (M 270M Grade 345W). The base plate shall be fabricated according to AASHTO M 270 Grade 50W or HPS 50W (M 270M Grade 345W or HPS 345W). The handhole rim and pole tenon shall be fabricated of ASTM A 714 Class 2, Grades I, II, or III; or Class 4, Grades V, VI, or VIII pipe. A weathering steel electrode, compatible with the pipe and pole tubing compositions, shall be used to weld the rim pipe and pole tube together. Weathering steel poles shall be blasted according to SSPC - SP6 (commercial blast) and cleaned at the factory to remove all surface contamination. The surface area shall be free of any oil and other foreign elements. All weld spatter shall be removed, and the outside surface and base plate shall be an even texture, free from marks, burrs, sharp edges, or imperfections. For all poles, a Type 304 stainless steel ground lug shall be used. The anchor rod covers and handhole cover shall be made from 12 gauge minimum steel. A nonmetallic anchor rod cover as approved by the Engineer shall be used on weathering steel poles.
a.Mast Arm Style. The mast arm, pole cap, and grommets shall be according to Article 1069.02(a), except as follows.
1.Arm. The truss style arm shall be fabricated from the same steel as the pole. Galvanized steel arms shall be fabricated according to
Article 1077 — 03(a)(2).
The arm shall be supplied with fabricated steel brackets welded to the arms. The arms shall attach to the shaft by a clamp type bracket with bolts, nuts, and lock washers.
2.Pole Cap. The top of the shaft shall be enclosed with a removable steel cap. The cap shall be finished to match the pole.
b.Davit Style. The davit arm pole shall be according to Article 1069.02(b), except as follows.
1.The poles shall be made of steel as specified above.
2.Stainless Steel Davit Pole. Each pole shall be a three piece assembly consisting of a flair base, pole shaft, and a short radius davit arm. The pole-arm assembly shall be part of a coordinated system as indicated above.
c.Tenon Top Style. The tenon shall be of the same material as the pole shaft. The pole shall come complete with a twin tenon bracket (when required), and incidentals necessary to complete the installation. A twin tenon bracket for a weathering steel pole shall be fabricated from 2 in. (50 mm) schedule 40 pipe 30,000 psi (208,000 kPa) minimum yield strength, painted with a prime coat of corrosion inhibiting polyamide epoxy and a Art. 1069.03 Pole and Tower finish coat of aliphatic acrylic polyurethane of a color to match aged weathering steel.
1069.04 Wood Pole. Wood poles shall be according to Article 1069.01 and the
following. Wood poles shall be Southern Yellow Pine, Western Red Cedar, or Douglas Fir preservative-treated according to the AWPA Standard T1 and designated per Standard M6. Wood poles shall meet the requirements of ANSI O5.1. Poles shall be marked and have other documentation to confirm compliance with this requirement as well as the class designation. The pole shall be selected for uniformity and straightness. Sweep shall be limited to one plane and one direction only. A straight line in the plane or maximum sweep joining the surface of the pole at top and 6 ft (1.8 m) above the base end shall not be more than 2 in. (50 mm) from the surface of the pole at any point. The pole shall be machine shaved to a smooth surface. In addition to ANSI O5.1, poles shall have no indentations attributed to loading or handling slings that are 1/4 in. (6 mm) or more deep over 20 percent or more of the pole circumference, or more than 1/2 in. (13 mm) deep at any point. Other indentations or abrasions, for example, forklift damage, chain saw damage etc., shall not be more than 1/10 the pole diameter at the point of damage up to a maximum 1 in. (25 mm). Such damage will be permitted in an oversized section, where the excess of wood will be taken into consideration in evaluating the effects of the damage. In any case, the circumference for a given class shall still meet the ANSI minimum. When a guy wire and anchor is required, they shall consist of the following.
a.45 degree, 5/8 in. (16 mm), thimble, eye bolt
b.1/4 in. (6 mm) thick, steel lift plate
c.Porcelain strain insulator rated not less than 6000 lb (2700 kg).
d.8 in. (200 mm) helix, 5/8 in. (16 mm) rod thimble-eye screw anchor rated 6000 lb (2700 kg) 6 ft (1.8 m) long.
e.Clamps, three bolt type
f.Guy wire, 6000 lb (2700 kg) tensile strength galvanized or copper clad steel. All bolts, plates, rods, clamps and guy wires shall be galvanized in accordance with ASTM A 153. Secondary racks shall be light duty galvanized steel with porcelain insulator spools spaced 12 in. (300 mm) apart and secured to the pole by two 5/8 in. (16 mm) through bolts, nuts, and washers, all galvanized.
g.Anchor guy shall be equipped with guy wire protectors. Pole and Tower Art. 1069.05
1069.05 Composite Pole. Composite poles shall be according to
Article 1069 — 01 and the following.
The pole shaft shall contain a minimum of 65 percent glass fibers by weight. The glass fibers shall consist of a commercial grade of “E” glass or better. The pole shall be designed such that deflection of the pole tip from the vertical axis does not exceed one degree per 10 ft (3 m) of the nominal pole height as caused by the maximum design wind loading in combination with the deadweight moment of the luminaire(s), bracket, arm(s), and other attachments as applicable. Pole deflection and loading calculations, certified by the manufacturer, shall be furnished to the Engineer as part of the pole submittal. Special notation shall be made to show that localized pole buckling has been considered and properly accounted for in the calculations. The structural fibers and surfacing veil shall be constructed in a continuous process using a homogeneous resin mix to ensure a strong molecular bonding of all adjoining layers. The bottom portion of the shaft shall be fitted with an anchor base. The base shall be galvanized steel according to Article 1069.03. The base shall be permanently fixed to the shaft and sealed to prevent moisture ingress. The base shall be polyurethane coated to match the pole color and equipped with anchor rod covers of the same material and finish as the base. The opening for the handhole shall be reinforced so as not to cause a weak point in the shaft. The handhole cover shall be of the same material and finish as the base. A 1/2 in. (13 mm) tapped hole shall be provided in easy access inside the handhole for attaching a mechanical grounding connector. This bonding point shall be a part of and have good electrical continuity with the anchor base. Poles may have an embedded stub section, as approved by the Engineer, for direct embedded poles. The minimum embedment depth for direct embedded poles shall be 6 ft (2 m). A wireway opening shall be located 15 in. (375 mm) below groundline. The opening shall be 2 1/2 X 18 in. (65 X 450 mm) in size and oriented to be parallel to the roadway unless otherwise directed by the Engineer. The embedded portion of the pole shall be designed to ensure rotational stability under load and test data shall be submitted to document this capability. In addition to the pole embedment requirements stated above, breakaway poles shall be manufactured according to and shall have a listing of approval by the FHWA to the breakaway requirements as stated in AASHTO “Structural Supports for Highway Signs, Luminaires, and Traffic Signals, Sixth Edition 2013”. Glass fibers shall be covered with a surfacing veil consisting of a saturated polyester cloth of 15 mil (0.38 mm) minimum thickness. An outer protective layer shall be provided of 10 mil (0.25 mm) minimum thickness of polyester resin with UV inhibitor and pigmented to the final color of the pole. The pole shall be covered with a final coating of polyurethane to a minimum thickness of 1.5 mil (0.04 mm). All thickness minimums shall be a dry coating thickness. Art. 1069.05 Pole and Tower The shaft shall be a smooth circular, tubular, seamless, tapered design and shall be free of dents, kinks, ripples, voids, scratches or other defects. All fiberglass poles shall have a smooth consistent finish, free from marks and imperfections. The pole shall have a groundline collar which shall protect the pole from abrasion by mowers and other equipment. It shall provide complete protection for the pole at groundline and extend up to the handhole without interfering with handhole access. The collar shall be securely fastened, rugged, removable, and UV resistant. It shall not detract from the aesthetics of the installation. The pole shall have a minimum ten year written warrantee against delamination, fiber exposure, crazing, chalking, and shall cover all aspects of the finished pole against defect including fittings and hardware. The warranty shall be transferred to the Department.
a.Mast Arm Style. The arm shall be aluminum truss type according to
Article 1069 — 02(a) and shall be painted with a powder coated process to
match the pole.
b.Tenon Top Style. The tenon shall be according to Article 1069.03(c), except the tenon shall be made of galvanized steel according to Article 1069.03. The finish of a twin tenon bracket shall match the pole.
1069.06 Pole/Unit Identification. Each pole, light tower, and underpass light
shall be labeled as indicated on the plans to correspond to actual circuiting, and as designated by the Engineer. They shall be installed on each lighting unit pole shaft and on the underpass walls, or piers, as shown on the plans. Median-mounted poles shall have two sets of identification labeling oriented to allow visibility from travel in either direction. Lighting controllers shall also be identified by means of identification decals as described herein. Identification shall be in place prior to placing the equipment in service. Identification of poles shall be made by application of letters and numerals as specified herein to an appropriately sized 1/8 in. (3.175 mm) thick Type 304 stainless steel plate which shall be banded to the pole with two stainless steel bands. Identification of painted poles shall be made by application of letters and numerals as specified herein via an adhesive approved by the paint manufacturer for the application. Identification of luminaires which are not pole mounted, such as underpass luminaires, shall be done using identification brackets. In general, the brackets shall be mounted adjacent to and within 1 ft (300 mm) of their respective luminaires. The brackets shall be fabricated from 1/8 in. (3 mm) in. aluminum alloy sheet according to the dimensions shown on the plans. The bracket shall be bent so as to present the luminaire identification numbers at a 60 degree angle to the wall. The bracket shall be attached to concrete walls with three 1/4 in. (6 mm), self drilling, snap-off type galvanized steel concrete anchors set flush with the wall, or power driven fasteners approved by the Engineer. The brackets shall be offset from the wall with 1/2 in. (13 mm) aluminum bushings. The structural steel shall not be drilled to attach the Pole and Tower Art. 1069.08 brackets. The luminaire identification numbers shall be applied to the bracket using the method described for identification applied to poles. The letters and numerals for 60 ft (18 m) and less mounting height lighting units and underpass lighting units shall be 4 in. (100 mm) high, black, series "D" as described in the Federal Highway Administration's "Standard Alphabets for Highway Signs". Placement of numbers shall be as shown on the plans. The placement of the numbers shall be coordinated with the accident reference marker and handhole door as applicable. The letters and numerals shall be screened on silver-white, pressure sensitive, retroreflective, 4 1/2 x 4 in. (114 x 100 mm), Type A sheeting according to applicable portions of Section 1091. An alternate color scheme, such as black on yellow, shall be used as directed by the Engineer or indicated in the plans when the lighting system is not maintained by the Illinois Department of Transportation. The letters and numerals for poles of a mounting height equal to and greater than 70 ft (21 m) shall be 9 in. (225 mm) high by 8 in. (200 mm) wide. The material of the decals and placement of numbers shall be as shown on the plans. The letters and numerals for illuminated signs shall be 9 in. (225 mm) high x 8 in. (200 mm) wide. The material of the decals and placement of numbers shall be as shown on the plans. Circuit identification for wood poles shall be made by the use of weather-resistant retroreflective letter tags in vertical slide in holders. Letter tags shall be retroreflective, black on yellow, with characters 3 in. (75 mm) high on tags nominally 2 1/2 x 3 5/8 in. (65 x 90 mm) in size. Slide in holders shall be aluminum and shall have both ends crimped after tags are inserted. The holders shall be attached to the poles with 1 1/2 in. (38 mm) aluminum nails as recommended by the tag manufacturer.
1069.07 Mounting Pad. When mounted on bridges, a vibration isolation
mounting pad and a galvanized steel leveling plate shall be included with the pole. The pad and leveling plate shall have the same shape as the bottom of the pole base with appropriate bolt holes and opening for the center of the pole. Included with the pad shall be four washers. The pad and washers shall be made from a rugged elastomeric material with a minimum thickness of 1/2 in. (13 mm) or as recommended by the manufacturer. The ultimate breakdown of the pad and washers under compressive load shall be not less than 10,000 psi (69,000 kPa) for the specified thickness without extrusion or detrimental reduction in thickness. The material shall also have a Shore-A Durometer reading of not less than 85. The isolation washers shall be installed with galvanized steel washers of the same diameter and adequate thickness top and bottom to prevent overstressing of the isolation washer. The leveling plate shall be according to AASHTO M 270 Grade 50 or 50S (M 270M Grade 345 or 345S) and shall be galvanized according to AASHTO M 111.
1069.08 Light Tower. Light towers (high mast poles) shall consist of any poles
80 ft (24 m) or more in length. Each light tower shall be complete with internal, integral motorized lowering mechanism, luminaire ring, pole top hood, internal electric power cables, lightning rod, luminaire counter-weight (when applicable), and all appurtenances required for a complete operating unit. Art. 1069.08 Pole and Tower The design shall be based upon AASHTO “LRFD Specifications for Structural Supports for Highway Signs, Luminaires and Traffic Signals” in effect on the date of invitation for bids, however the width of reinforced opening requirement in Chapter 5, Section 5.6.6.1 shall not apply. Light Towers shall be designed for ADT > 10,000, Risk Category Typical, and Fatigue Importance Category I. A minimum total combined luminaire weight of 600 lb (272 kg) shall be used plus a combined hood area and lowering ring weight of 400 lb (181 kg). The associated total projected area shall be 24 sq ft (2.23 sq m) and 10 sq ft (0.93 sq m) respectively. Additional weights and areas shall be added when necessary for such things as luminaire shields. Project specific weights and areas shall be used in the design calculations when they exceed the above minimums. Light towers shall be designed and constructed so no structural member or other component is applied in excess of the manufacturer's recommended rating (when applicable) or the published rating, whichever is lower. The design of the tower shaft shall achieve a maximum, fully loaded deflection at the top of the pole, which is not greater than the following percentage of the tower height. Light Tower Maximum Deflection Tower Height in feet Max Deflection % of Height Tower Height in feet Max. Deflection % of Height 160 13.70 110 7.80 150 10.04 100 5.30 140 7.80 90 4.50 130 6.02 80 3.50 120 10.75 Light Tower Maximum Deflection Tower Height in meters Max Deflection % of Height Tower Height in meters Max. Deflection % of Height 49 13.70 33 7.80 46 10.04 30 5.30 43 7.80 27 4.50 40 6.02 24 3.50 36 10.75 The light towers shall be of a height and luminaire capacity as indicated and be of the nonlatching ring support design. Specific requirements for the different components of a light tower are as follows.
a.Shaft. The tower shaft shall be a low deflection tapered shaft having polysided, circular, or elliptical cross sections. The shaft cross section at the top shall be not less than 7.5 in. (190 mm) in diameter. The shaft cross section at the bottom shall not be greater than that which is compatible with the base plate bolt circle specified, and shall not be less than 24 in. Pole and Tower Art. 1069.08 (600 mm) in diameter for new installations. The minimum wall thickness of the bottom portion of the tower shaft shall be 0.2391 in. (3 gauge). All tower shaft components shall be fabricated from high strength, low alloy, steel according to AASHTO M 270 (M 270M); ASTM A 595 (A 595M), Grade A or B; ASTM A 1011 (A 1011M); ASTM A 606 (A 606M); ASTM A 588 (A 588M), or ASTM A 871 (A 871M) Grade 65, with a minimum yield strength of 50,000 psi (345,000 kPa). Each tower shaft shall be constructed of not more than the following welded or slip fitted sections. Tower Height in feet Maximum Number of Sections 130,140,150,160 4 90,100,110,120 3 80 2 Tower Height in meters Maximum Number of Sections 40,43,46,49 4 27,30,33,36 3 24 2 Sections which are slip fitted shall have slip joints with a minimum overlap of 1.5 times the diameter of the bottom of the upper section at the slip joint. Towers having slip joint construction shall be prefitted and match marked at the factory and shall be shipped disassembled for assembly at the jobsite. Slip joints shall be marked to ensure the 1.5 times diameter insertion is provided. Each tower shaft shall be constructed with a handhole/access door for access to power connections and lowering mechanism equipment. The handhole shall be large enough to make the entire lowering mechanism assembly visible from an extended operating position and accessible for maintenance. The handhole shall be sized and arranged to permit removal of the lowering mechanism without excessive dismantling of the equipment. The handhole may be a reinforced opening in the pole shaft as detailed on the plans or may be a part of a flared shaft base assembly as approved by the Engineer. The flared base shall not be considered a separate section of the tower shaft. The handholes in the pole shafts shall have rounded corners and shall be reinforced to maintain the original strength of the tower shaft. Flared base assemblies shall maintain the strength of the shaft and have no nonround protrusions. The handhole shall have a pocket door with a full-height piano hinge. A bolt through a door and frame eyelet shall not constitute an acceptable hinge. Hinges shall be heavy duty, sufficiently bolted, and suitable for the weight of the handhole door with all attached components. The door/opening shall be Art. 1069.08 Pole and Tower gasketed in a manner which will prevent the entry of water into the pole and the door shall have a tight compressive seal employing a tubular gasket to ensure compressibility. The gasket shall be permanently attached with stainless steel screws or bolts. The handhole door shall be held closed with a 12 gauge captive adjustable, spring loaded, clamp assembly. The clamp assembly shall be held closed with deep slot screws. The clamps shall have a depth stop feature to ensure uniform sealing pressure at all clamp points. A minimum of five clamps shall be used around the nonhinged sides of the door assembly. A padlock hasp and staple shall be provided for locking the door. The door shall be equipped with an integral door stop mechanism. It shall be equipped with a linkage arm assembly to securely hold the door in the open position. A rain shield shall be placed on or above the handhole to direct water away from the handhole. The shield shall be fabricated of the same material as the pole shaft, shall have rounded corners, and shall be permanently welded to the handhole frame or shaft. Details of the configuration and welding shall be included with the Contractor’s submittal. Each tower shaft shall have a handhole accessible ground pad welded to the shaft for connection of ground conductors. The pad shall be NEMA 2-hole pad and accessible with the lowering device installed. The top of the shaft shall have a Type 304 stainless steel ground lug welded to the tower shaft suitable for a bolted ground connection for a lightning rod. A copper bonding jumper shall bond slip fit pole sections together with a flat copper cable and stainless steel ground lugs. A low profile bonding jumper shall be used to prevent snagging the roller/guide mechanism. The base plate shall be factory predrilled (slotted) for the number and configuration of anchor rods. The base plate shall have a round (disk) shape of the specified outer diameter or as otherwise approved by the Engineer. The minimum thickness of the base plate shall be 2.0 in. (50 mm). The base plate shall be circumferentially welded to the tower shaft. A backer ring shall be used for this circumferential weld. All crevices at the backer ring shall be completely sealed to moisture and corrosion. All tower shaft hardware, such as ground lugs, hardware for the handhole door, including the clamp assemblies, hinge and door stop, shall be Type 304 stainless steel. Ground lugs shall be protected by removable plastic plugs or caps. Pole and Tower Art. 1069.08
b.Welding.
1.Requirements. The Contractor shall submit the manufacturer’s welding procedures to the Engineer for approval prior to fabrication. The welding symbols and complete information regarding location, type, size, welding sequence, and WPSs shall be shown on all shop drawings. Welds shall be smooth and thoroughly cleaned of flux and spatter and be according to the AWS. Minimum preheats for welds shall be 100 °F (40 °C) for fillets, 150 °F (65 °C) for seams, and 225 °F (110 °C) for circumferential welds. Circumferential welds, including top flange welds, shall be full penetration welds. Longitudinal welds shall have a minimum of 60 percent penetration, except the longitudinal welds on both the male and female shaft sections shall be full penetration welds within a distance of two diameters of overlap joints. All full penetration welds shall be inspected for soundness by the ultrasonic method and all partial penetration welds shall be inspected by the magnetic particle method. Weld procedure specifications for seams and circumferential welds shall be qualified according to Clause 6, Part D of AWS D1.1/D1.1M Structural Welding Code - Steel. Charpy V-Notch (CVN) impact specimens shall be tested for minimum values of 25 ft lb at 40 °F (34 J at 4 °C). Fillet weld procedures shall be tested according to Table 6.4 of AWS D1.1/D1.1M.
2.Inspection. In addition to manufacturer's own welding inspection, the Contractor shall have welding inspected by an independent Certified Welding Inspector (CWI). The selected inspector shall be approved by the Engineer before any inspecting is performed. The NDE inspector(s) shall be independent nondestructive testing inspector(s), certified as level II in RT, UT, and/or MT as applicable. The methods for testing full penetration and partial penetration welds by the independent welding inspector(s) shall be the same as specified above. The independent welding inspector shall send the test results directly to the Engineers, as follows: Illinois Department of Transportation, Attn: Engineer of Structural Services, 2300 S. Dirksen Parkway, Bureau of Bridges & Structures, Springfield, Illinois 62764 and to the applicable Regional Engineer. Art. 1069.08 Pole and Tower
c.Light Tower Finish. Light tower finishes shall be as follows.
1.Painted Tower. Painted towers shall be completely painted, including the handhole, handhole door, base plate, mounting plate and all other elements attached to the shaft. Tower inside shall be painted with organic zinc rich primer coat only. The paint system to be used shall be included with the submittal for approval by the Engineer. The three coat paint system shall consist of an organic zinc rich primer, epoxy or urethane intermediate coat, and a urethane finish coat. The finish coat shall be applied to the outside surfaces only and shall match Aerospace Material Specification Standard 595 26307. Each coat shall be a different color and all paint shall be shop applied under controlled conditions. The paint system shall be applied according to the applicable portions of Section 506 and the paint manufacturer’s recommendations. Stainless steel and electrical or mechanical components shall not be painted. The dry film thickness of each coat shall be as recommended by the paint manufacturer for continuous exterior exposure, as required by the product data sheet and as approved by the Engineer. The Contractor shall furnish in writing to the Engineer the paint manufacturer’s normal warranty and certification that the paint system has been properly applied. Field touch up painting of towers shall be according to the paint manufacturer’s recommended procedures with paint supplied for that purpose.
2.Galvanized Steel Towers. Galvanized steel towers shall be hot-dip galvanized including the handhole, handhole door, base plate, mounting plate and all other elements welded to the shaft according to AASHTO M 111.
d.Head Frame. Each tower shall be equipped with a head frame assembly to support and guide the luminaire ring assembly. The head frame and luminaire ring shall have a positive mating interface with the proper seating force applied to each guide pin when in the home position. The guide pin housing for each support cable shall have a flared bottom section to help seat the cable guide pin. The cable guide pin shall be inserted a minimum of 4 in. (100 mm) into the guide pin housing. The cable shall be protected against wear in the head frame when in the fully seated (home) position. The head frame plate and attached components shall be fabricated of the same type of steel as the tower shaft or of Type 201L or Type 304 stainless steel. It shall then be hot-dip galvanized according to AASHTO M 111 or painted as specified for the tower shaft or fabricated from stainless steel. Pole and Tower Art. 1069.08 The head frame shall have a pulley support and two pulleys for each lift cable. The head frame shall have a power cable pulley arrangement placed between and roughly equidistant from two support arms, and allow a minimum cable bending radius of not less than 6 1/2 in. (163 mm). The head frame shall have a minimum diameter of 36 in. (1 m). Pulley sheaves shall be constructed to allow associated cables to ride freely within pulley grooves and cable guides shall be incorporated to prevent cables from riding out of pulleys. Attachment hardware, pins, pulley axles and the like used in the head frame assembly shall be stainless steel. Pulleys shall be made of stainless steel and have permanently lubricated sealed bearings or self lubricating bronze bushings. The head frame assembly shall be equipped with an aluminum hood with a minimum thickness of 0.125 in. (3 mm). The aluminum hood shall protect the operating head frame components from damage or deterioration from weather and shall be easily removed for maintenance. The hood shall be attached with a minimum of eight stainless steel bolts and have a safety tether of stainless steel chain to hold the hood to the head frame plate when the hood is removed. The head frame assembly shall be match marked to its tower shaft and shall be attached to the shaft by stainless steel hardware. All penetrations through the hood and head frame assembly shall be sealed to prevent the entry and nesting of birds and mice. The head frame plate shall be vented to permit pole ventilation. The vent opening shall be covered with a stainless steel screen.
e.Luminaire Ring. Each tower shall be provided with a luminaire ring suitable for the quantity, type, and orientation of the luminaires specified. The ring shall mate/align with the head frame and shall be coordinated relative to seating force. The diameter of the ring shall be kept to a minimum while being coordinated with the diameter of the tower shaft to ensure smooth operation of the lowering device and a ring that can be fully lowered for luminaire maintenance. A fully enclosed and continuously welded metal ring shall be furnished. An open ring design will be allowed if the Engineer determines the open ring will be as structurally rigid, weather and corrosion resistant, and has the same life expectancy as a fully enclosed ring. The fully enclosed luminaire ring shall facilitate ease of wiring to the arms by removable gasketed doors, secured with locking type hardware. The open ring design shall incorporate a steel retainer strap welded to the ring at a 1 ft (300 mm) maximum spacing to keep the cord properly aligned with the ring. Both the enclosed and open ring design shall be free from protrusions or sharp edges that could damage the cord insulation. Art. 1069.08 Pole and Tower The ring shall be equipped with bumpers, rollers, or other shock-absorbing mechanism to guide the ring during the raising/lowering operations. The guide mechanism shall be a spring loaded design to minimize shock to the luminaire during raising and lowering and shall be made of materials with corrosion resistance equivalent to stainless steel. The guide mechanism shall not damage or mar the finish of the tower and shall be designed to pass freely over the pole bonding strap(s). Arms for the attachment of luminaires shall be standard 2 in. (50 mm) diameter tenon arms. The arms shall be attached to the ring in a secure manner either by welding or by means of stainless steel bolts, nuts, lock washers and hardware such that a permanent rigid attachment is achieved. Arms shall be approximately 24 in. (600 mm) in length, coordinated with luminaire size and configuration and shall be arranged so that down lighting or multi-mount luminaires are accommodated as specified. Multi-mount luminaires shall have flexible, weatherproof conduit to transition the cord from the end of the tenon arm to the luminaire. The ring shall lower to 4 ft (1.2 m) above the bottom of the tower base plate or 5 ft (1.5 m) above the surrounding grade, whichever is lower. A stop mechanism shall be incorporated into the lowering device to prevent conflict of the transition plate in the top of the pole which could cause stress to the lift cables or damage to the plate. The ring shall be equipped with an enclosed wire raceway and a stainless steel terminal box built according to NEMA Type 4X requirements for wiring of the luminaires. The box shall be equipped with a hinged door and latch or with captive stainless steel closure hardware acceptable to the Engineer and an external special fixed-mount plug with a retained cap according to
Article 1069 — 08(o), to accept a test power connection when the ring is in the
lowered position. The terminal box shall have a waterproof breather valve mounted on top and 1 in. (25 mm) diameter vent hole drilled in the bottom and permanently sealed from insects with a stainless steel screen. The box shall be equipped with fuses and fuse blocks for fuses per Article 1065.01(b). The box shall contain a terminal strip with identified terminals for connection of the main power cord, luminaires, and the test power receptacle. The ring shall facilitate ease of wiring to the arms by the use of removable gasketed covers. Arms shall be factory or field wired using No. 12 AWG, Type SOOW. The cord shall have three conductor, flexible CPE jacketed construction according to UL 62 and be MSHA approved. The cord shall be rated 600 V and -58 to 221 °F (-50 to 105 °C). Each conductor shall be No.12 AWG stranded annealed copper per ASTM B 174 with EPDM insulation. Wiring shall be color coded according to Article 1066.02. Wires shall be installed to all luminaire arms and extend 6 ft (1.8 m) longer than their respective tenon arm and shall be trained back into the arm. The arm shall then be sealed with a protective cap for shipment to the jobsite. All ring wiring shall be tagged with wire markers at both ends. Pole and Tower Art. 1069.08 Ring designs that incorporate liquidtight flexible nonmetallic conduit to the terminal box shall use stainless steel conduit fittings. Liquidtight flexible nonmetallic conduit shall be according to Article 1088.01(a)(4). The luminaire ring shall be factory checked and marked for proper positioning and luminaire orientation. Catalog cuts and shop drawings shall indicate the orientation of the luminaire ring, handhole, and bolt circle in relation to each other on a single drawing. The orientation of the terminal box on the ring shall be over the tower handhole or as close to that location as possible. The fully enclosed luminaire ring and attached components shall be fabricated of the same type of steel as the tower shaft or of Type 201L or Type 304 stainless steel. If it is not fabricated of stainless steel, it shall then be hot-dip galvanized according to AASHTO M 111 or painted according to
Article 1069 — 08(c)(1). An open ring system shall be fabricated of Type 201L
or Type 304 stainless steel.
f.Lowering and Support Mechanism. The support shall be of the nonlatching design. The lowering and support scheme shall be of the two cable or three cable type as specified. The lowering and support mechanism shall include, but not be limited to the support cables, hoist cable, internal drive unit and all accessories and appurtenances for a coordinated operating system. Three cable mechanisms shall incorporate three support cables joined at a transition plate to a single hoist cable wound around a single hoist winch. The transition design shall utilize thrust bearings in order to prevent twisting of the hoist and support cables and to ensure smooth winding of the cable on the winch. The entire transition plate shall be visible in the tower handhole when the ring is raised and fully seated. Two cable mechanisms shall incorporate two support/hoist cables wound around a dual winch assembly. The design shall be such to prevent twisting of the cables and to ensure smooth winding of the cables on their respective winch and to prevent binding on the inside of the tower shaft. The hoisting system shall be securely mounted and the lower assembly, i.e. motor, winch, mechanical clutch, gear reducer, etc., shall be designed to allow ease in removal of the equipment via the tower handhole without dismantling the system. Individual components shall be accessible and removable without the removal of other components. The device shall tightly position the luminaire mounting ring against the head frame assembly by applying a seating force of 300 lb (1.3 kN) minimum, to be distributed among the seating/interface points. There shall be a positive indication at the handhole or on the head frame that the required force has been applied, visible from the extended operating position away from the handhole and not under the ring. Art. 1069.08 Pole and Tower The mechanism shall be equipped with a multipoint safety chain and hook assembly to hold the luminaire ring in place during maintenance. All hardware shall be stainless steel. Chains shall be stainless steel. Two chains are required for each tower with each chain having sufficient strength as to independently withstand the weight of the entire luminaire ring assembly and seating force. All components of the support system shall be designed with the appropriate safety factors to hold the ring, cables, and lowering device. Safety verification shall be provided with the Contractor’s submittal. The system shall be designed so that unbroken power cable, suspension and/or hoist cable can be replaced from ground level.
g.Support and Hoist Cables. Cables (wire rope) shall be manufactured from Type 304 or Type 302 stainless steel and shall be stranded assembly coated with a friction-limiting non-corrosive lubricant. Cables shall be 7x19 wire strand and have no strand joints or strand splices. Cables shall be manufactured and listed for compliance with military specification MIL-DTL-83420, Type 1, Composition B. Cable terminals shall be stainless steel whenever possible, shall be compatible with the cable, and shall be as recommended by the cable manufacturer. The terminals, swaging, etc. shall meet the requirements of military specification MIL-DTL-781. Stainless steel oval sleeves shall be according to military specification MS51844. The support cables shall each be not less than 3/16 in. (5 mm) in diameter and the hoist cable shall not be less than 5/16 in. (8 mm) in diameter, for a three support cable system. For two cable systems, the support/hoist cables shall each be not less than 1/4 in. (6 mm) in diameter. As part of the tower shop drawings and product data submitted for approval, support and hoist cable information shall be provided. The information shall include the following.
1.Catalog information to confirm sizing, stranding and other specified requirements.
2.Evidence of listing as military specification cable as specified.
3.Certification of compliance with all specification requirements made by the cable manufacturer.
4.Copies of recent test reports made on identical cable indicating compliance with military specification requirements. The test reports shall include as a minimum, the following.
a.Breaking Strength test.
b.Endurance test. Pole and Tower Art. 1069.08
c.Stretch test.
d.Test load.
e.Chemical Composition.
5.For all termination devices used on the cable, a written certification by the cable manufacturer that the proposed device is approved and compatible with the required military specification.
h.Winch. The winch shall have a drum suitable for the support/hoist cables, arranged to provide smooth winding of the cable and to prevent slippage. The drum shall be stainless steel or cast/ductile iron and shall have a diameter not less than 18 times the diameter of its respective cable (wire rope). The winch drum shall be designed with cable guides for a smooth cable take-up of level lays and to prevent the cable from riding over the drum flange. The drum shall have the end of the cable attached by means of a swaged connection and one full layer of cable shall be wound on the drum when the ring is in the fully lowered position. The drum axle shall be supported at both ends.
i.Gear Reducer. Each assembly shall incorporate a gear reducer having a reduction ratio which will prevent free fall of the luminaire ring upon failure or disengagement of the drive unit and which will produce a travel rate of 10 to 15 ft (3 to 4.6 m)/minute under normal operation. The unit shall have a worm gear which is totally enclosed in a lubricating reservoir. The lubricant shall have a viscosity range suitable for proper operation in ambient temperatures from -40 to 120 °F (-40 to 49 °C). The worm shall be manufactured of case hardened ground alloy steel or cast iron. The unit shall have provisions to verify the oil level in the gear box. The gear shall be of bronze alloy and keyed to the output shaft. The worm gear shaft and output shaft shall be mounted on antifriction bearings.
j.Clutch. The mechanism shall incorporate a mechanical clutch, installed between the winch/gear reducer and the motor. The clutch shall be of mechanical type, in a sealed cast metal housing. The clutch torque shall be factory calibrated and coordinated with the electric motor. The clutch shall act to limit the seating force of the raised ring to 300 lb (1.3 kN).
k.Motor. The electric motor shall be matched to the load and torque characteristics required for a loaded luminaire ring and shall not be less than 1 hp. The motor shall have built in overcurrent protection and reset switch. The switch shall be installed to have easy access inside the tower handhole for inspection and testing. The motor shall be totally enclosed fan cooled (TEFC), shall be reversible to operate the lowering mechanism in both directions, and shall be of rated voltage compatible with power supplied to the tower. Art. 1069.08 Pole and Tower Submittal information shall include complete motor data, including, but not limited to the following.
1.Manufacturer
2.Nameplate Rated Watts (Horsepower)
3.Rated Voltage
4.Full Load RPM
5.Full Load Current
6.Locked Rotor Current
7.NEMA Design Letter
8.Insulation Class
9.Torque Data
10.Dimensional Data
11.Overcurrent Protection Data
12.Calculations to verify the compatibility of the drive unit components (motor, gear reducer, clutch and winch). Calculations shall verify the 300 lb (1.3 kN) seating force.
l.Ring Lowering Controls. The control shall incorporate a reversing motor starter or reversing control switch. The motor starter shall be sized NEMA Type 1 as a minimum and shall be full voltage, rated 600 V, 2-pole reversing type with arc-extinguishing capabilities, and shall have a coil voltage as specified. The reversing control switch shall be a drum switch with a minimum rating of 3 hp. Either control device shall be capable of being operated remotely, at a distance of 25 ft (7.5 m) from the tower. The remote, “dead man” style switch with lever control shall be in a nonmetallic, impact resistant, NEMA Type 4 enclosure. It shall have momentary contacts, up-stop-down settings, and require constant pressure by the operator to energize the circuit.
m.Power Supply. The power supply to the tower shall feed through a standard 2-pole fuseholder according to Article 1065.01 and connect to a surge arrester according to Article 1065.02 before terminating at the tower main breaker. The tower main breaker and the motor breaker shall be housed in a stainless steel NEMA Type 4 enclosure mounted on the inside of the handhole pocket door. The main and motor breakers shall have an external position indicating, trip free operating handle having padlock provisions and shall be labeled by two color engraved nameplates clearly marking the “RESET”, “ON”, and “OFF” positions. The operating handles and Pole and Tower Art. 1069.08 nameplates shall be securely and permanently attached to the enclosure. Operating handles shall be oriented such that the up position on the handle corresponds to a breaker position of “ON”. The main and motor circuit breakers shall be molded case, 2-pole, thermal magnetic, bolt-on type having a listed interrupting rating of not less than 14,000 rms symmetrical amps at 480 V. The main breaker shall be sized for the motor but shall be a minimum of 30 A.
n.Flexible Cord. All control cord in the tower handhole shall be Type SOOW portable power cord and shall be no smaller than No. 12 AWG with ground. The cord shall have a multi-conductor, flexible CPE jacketed construction according to UL 62 and be MSHA approved. The cord shall be rated 600 V and -58 to 221 °F (-50 to 105 °C). Each conductor shall be No. 12 AWG stranded annealed copper per ASTM B 174 with EPDM insulation. The cord shall be rated for extra hard-usage service and shall be oil, chemical, and UV resistant. The power cord in the tower handhole, starting at the surge arrestor and running to the luminaire ring, shall be Type W industrial grade portable power cord and shall be No. 8 AWG or larger. The cord shall have a multi- conductor, extra flexible CPE or CSPE jacketed construction with reinforced fillers to maintain a smooth round surface according to ICEA S-75-381, NEMA WC 58, UL 1650, and be MSHA approved. The cord shall be rated 2000 V and -40 to 194 °F (-40 to 90 °C). Each conductor shall be No. 8 AWG rope lay stranded annealed copper per ASTM B 172 or ASTM B 173. All cords shall be reeled and neatly stored when housed in the tower handhole and arranged so as not to interfere with the lowering mechanism or closing of the handhole door. All circuits shall include a green insulated equipment grounding conductor of the same size as the circuit phase conductor.
o.Connectors. Plug and receptacle connectors shall be “pin and sleeve” type to allow quick connections of the feed from the main breaker to the power cord at the transition plate, luminaire ring, and motor control circuit. Connectors shall be four pole, four wire, 600 V, 60 A, load-break, weatherproof devices and be according to UL 1682 and IEC 309. Both plug and receptacle shall be complete with retained flap-type protective end cover. The feed from the main breaker shall have a socket insert to minimize contact exposure. All cord connectors that support the weight of the power cord to the ring shall include stainless steel wire mesh strain relief. All terminations of the power cord in an enclosure shall be through a stainless steel, watertight cord connector using a water tight sealing bushing. At the surge arrestor in the handhole, the power cord shall be sealed in a heat shrink, multi leg boot.
p.Lightning Protection. A copper clad steel lightning rod of 1/2 in. (13 mm) minimum diameter shall be attached to the head frame. It shall be centered over the pole, penetrate the hood, and extend a minimum of 3 ft (1 m) above Art. 1069.08 Foundation and Breakaway Devices the hood. The rod shall be threaded and coupled at the point of hood penetration to facilitate the removal of the hood. A flexible copper braid connector of #2 copper equivalent shall be installed between the lightning rod (air terminal) and grounding lug at the top of the tower shaft. Good metal-to-metal contact shall be ensured by using listed compression style connectors at all connections to the air terminal conductor. A minimum #4 solid bare soft drawn copper grounding electrode conductor shall be attached between the grounding electrode at the foundation and the ground pad in the handhole and shall be kept as short as possible. The grounding electrode shall be according to Section 806. SECTION 1070. FOUNDATION AND BREAKAWAY DEVICES
1070.01 Light Pole Foundation, Metal. Metal foundations shall be fabricated
from material new and unused in any previous application and shall be galvanized according to AASHTO M 111. The manufacturer shall provide a certification that the materials are new and meet the specified requirements and shall accompany the submittal. Metal foundations shall be fabricated from steel. Baseplate AASHTO M 270, Grade 36 (M 270M, Grade 250) Shaft ASTM A 252, Grade 2, Phosphoru s 0.04% max., Sulfur 0.05% max. Helix Screw AASHTO M 270, Grade 36 (M 270M, Grade 250) Pilot Point AASHTO M 270, Grade 36 (M 270M, Grade 250) Metal foundations shall be fabricated with two wiring entry slots parallel with the shaft axis and aligned with base plate faces 180 degrees apart. Continuous slots up and through the base plate will not be acceptable. The shaft of the foundation shall be socketed into the top plate and welded on both sides. Foundation shaft diameters, baseplate size, shaft length and bolt circles shall be as detailed on the plans. Foundations shall be fully coordinated with specified poles. Fully threaded and galvanized anchor rods or stud bolts with washers and nuts shall be furnished with the foundations and shall be according to Article 1006.09. Anchors furnished according to ASTM F 1554 shall be Grade 105 (Grade 725). Metal foundations shall come complete with galvanized steel plates or plugs to fill any penetrations in the base plate which are in addition to the four threaded stud holes and the center wireway opening.
1070.02 Anchor Rods. Anchor rods shall be according to Article 1006.09,
Grade 105 (Grade 725) and full length galvanized with washers and nuts.
1070.03 Light Tower Anchor Rod Assembly. Anchor rods, washers, and
nuts shall be according to Article 1070.02. Anchor rod information shall be submitted
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Source: Illinois Standard Specifications for Road and Bridge Construction, 2022 Edition. Pages 992–1013 of 1,217. View official source ↗