Light Tower Foundation Art. 837.03 Excavation in rock will be measured for payment according to Article 502.12.
836.05 Basis of Payment. Concrete foundations will be paid for at the
contract unit price per foot (meter) for LIGHT POLE FOUNDATION, of the diameter specified. Metal foundations will be paid for at the contract unit price per each for LIGHT POLE FOUNDATION, METAL, of the bolt circle, diameter, and length specified. Excavation in rock will be paid for according to Article 502.13. SECTION 837. LIGHT TOWER FOUNDATION
837.01 Description. This work shall consist of constructing a drilled shaft
foundation for a light tower.
837.02 Materials. Materials shall be according to the following.
Item Article/Section
a.Portland Cement Concrete (Note 1) ....................................................... 1020
b.Light Tower Anchor Rod Assembly .................................................... 1070.03
c.Fine Aggregate .................................................................................. 1003.04
d.Reinforcement Bars ....................................................................... 1006.10(a) Note 1. Class SI concrete shall be used for the concrete work pad and shall be cured according to Article 1020.13 under other incidental concrete. CONSTRUCTION REQUIREMENTS
837.03 Installation. Drilled shaft foundations shall be constructed according
to Section 516 and the following. When obstructions are encountered, the Contractor shall request to relocate the foundation. Any abandoned holes shall be backfilled to the satisfaction of the Engineer. Grounding electrodes shall be according to Section 806. The anchor rod assembly may be factory fabricated with the reinforcing cage or it may be field assembled. The cage shall be hand tied, no tack welding will be allowed. Anchor rods shall sufficiently overlap with the rebar cage to develop their full holding strength. Full length anchor rods shall not be used unless approved by the Engineer. The top of the foundation to 18 in. (450 mm) below grade shall be formed. The reinforcing cage, anchor rods, and wireway shall be accurately held in place by the form. The anchor rods shall be held plumb above the top of the foundation during concrete placement. Art. 837.03 Breakaway Devices A permanent, concrete work pad shall be constructed as shown on the plans. This 36 x 36 x 8 in. (900 x 900 x 200 mm) pad shall be centered in front of the handhole and finished level. After installation of cable, voids within the wiring window shall be filled with fine aggregate. Concrete shall be cured before light towers are installed.
837.04 Method of Measurement. This work will be measured for payment in
feet (meters) in place. The length measured will be limited to that shown on the plans or authorized by the Engineer. Excavation in rock will be measured for payment according to Article 502.12.
837.05 Basis of Payment. This work will be paid for at the contract unit price
per foot (meter) for LIGHT TOWER FOUNDATION of the diameter specified. Excavation in rock will be paid for according to Article 502.13. Obstruction mitigation or abandoned foundation excavations and backfill will be paid for according to Article 109.04. SECTION 838. BREAKAWAY DEVICES
838.01 Description. This work shall consist of furnishing and installing a
breakaway device on a pole foundation.
838.02 Materials. Materials shall be according to the following.
Item Article/Section
a.Breakaway Devices ........................................................................... 1070.04 CONSTRUCTION REQUIRMENTS
838.03 Installation. All entryway points created by the use of breakaway
devices shall be permanently and completely sealed against rodent entry. This includes the pole base plate and foundation plate openings, elongated holes for anchor rods, the opening below the pole base plate, and the wiring windows in both steel and concrete foundations. Where breakaway couplings are used in conjunction with steel foundations, the Contractor shall match the plate sizes in order to seal out rodents between the foundation and pole base. Breakaway devices are not allowed on bridge parapets, barrier walls, or pedestrian conflict areas, and are not required behind guardrail. The Contractor shall verify that the loading of the pole, arm(s), luminaire(s), and appurtenances does not exceed the capacity of the breakaway device.
a.Transformer Base. The transformer base shall be installed level and flush with the foundation without the use of leveling washers or shims according to the manufacturer’s installation procedures. The anchor bolts shall be
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Source: Illinois Standard Specifications for Road and Bridge Construction, 2022 Edition. Pages 728–729 of 1,217. View official source ↗