DelDOT 834: Pole Bases, Extensions, and Sheeting

834.1Description.

This work consists of constructing concrete pole bases, extensions, and sheeting.

834.2Materials.

A.Pole Bases

1.Ground rods Section 833

2.Self-Consolidating Concrete, Class B Section 1022

3.Bar reinforcement, Grade 60 Section 1037

4.Conduit sweeps Section 1062

5.Liquid Membrane-Forming Compounds for Curing Section 1045.7

B.Pole Base Extensions

1.Ground rods Section 833

2.Self-Consolidating Concrete, Class B Section 1022

3.Bar reinforcement, Grade 60 Section 1037

4.Conduit sweeps Section 1062

5.Liquid Membrane-Forming Compounds for Curing Section 1045.7

C.Pole Base Sheeting

1.Well-point system Section 906

2.Steel sheet piling Section 1032

3.Corrugated round steel tube as directed by the engineer

4.Sonotube as directed by the engineer

D.Anchor Bolts Section 1039

834.3Construction.

834.3.1 Pole Base.

A.The Department will measure the required depth of the pole hole as follows:

1.From the front of the pole base where the grade at the back of the pole is higher than the grade

in front of the pole o n slopes.

2.From the back of the pole when the grade on the back of the hole is lower than the front.

B.Do not exceed the diameter of the pole base during excavation. Construct pole base in accordance

with the contract, including placement of anchor bolts, bar reinforcement, conduit sweep, and ground rod. Refer to the Standard Construction Details for the diameter and depth of pole bases for the types of pole bases shown in the contract. Place the concrete by tremie methods in accordance with Section 610.3.4.D.2 for placement depths greater than 5-feet from the point of

concrete discharge. Do not freefall concrete at distances greater than 5-feet. Cap the ends of the conduit sweeps with a galvanized threaded conduit plug. Cure exposed pole base surfaces in accordance with Section 501.3 with materials in accordance with Section 1022.6. After the concrete for the pole bases has cured, backfill the area around the pole base using approved material. Place and compact backfill material in accordance with Section 202. Apply topsoil and seed in the disturbed area, in accordance with Section 908.

C.Attach rodent screen to base plate foundation gap with galvanized steel screen,1/2-inch by 1/2-

inch mesh and 0.0063-inch diameter wires. Screen is to be removable and attached to the base plate with stainless steel hardware. 834.3.2 Pole Base Extension.

A.Extend pole bases where the contract requires pole bases deeper than what is shown in the

Standard Construction Details. Extend reinforcing bars in a pattern that complies with the Standard Construction Details and match the pattern of the extended pole base reinforcement bars using continuous vertical bars in accordance with Section 611.3.C. Form the pole base extension and pour concrete in accordance with Section 610. Backfill the excavated area in accordance with Section 202.

B.Install ground rod in accordance with Section 833. Install ground rod so that it extends 8-inches

above the final grade of the pole base. 834.3.3 Pole Base Sheeting.

A.Install steel sheet piling, corrugated round steel tube, sonotube, or a well-point system when

encountering soil conditions that prohibit the construction of a pole base using wood or plywood sheeting. Install pole base sheeting when directed by the engineer.

B.Construct pole base as specified in Section 834.3.1 after installing pole base sheeting. Extend the 2

conduit sweeps, specified for pole bases, a minimum of 12-inches beyond the wall of the sheeting. Cap the ends of the conduit sweeps with a galvanized threaded conduit plug. Leave metal sheeting material in place and cutoff sheeting material at least 6-inches below the surface of the ground. Dispose of excavated material from the project site in accordance with Section 106.8.

834.4Method of Measurement.

A.The Department will measure the quantity of:

1.Pole bases as the number of pole bases placed and accepted.

2.Pole base extensions as the number of cubic feet of concrete required to increase the vertical

dimension from the standard depth to the increased depth. The Department will measure the volume by multiplying the vertical increase in depth by the cross-sectional area of the standard pole base.

3.Pole base sheeting as the sheeting used for a pole base excavation provided, placed, and

accepted. The Department considers sheeting used for 1 pole as a single unit. The Department will only pay for locations where the contractor has written permission to use sheeting.

834.5Basis of Payment.

A.The Department will pay for the accepted quantities at the contract unit price.

B.The Department will pay the quantity of pole bases at the contract unit price per each. Price and

payment constitute full compensation for:

1.Providing, placing, and curing concrete;

2.bar reinforcement;

3.ground rod;

4.anchor bolts;

5.conduit sweeps;

6.excavating and backfilling; and

7.rodent screen.

C.The Department will pay the quantity of pole base extensions at the contract unit price per cubic

feet for pole base extension. Price and payment constitute full compensation for:

1.Providing, placing, and curing concrete;

2.bar reinforcement;

3.ground rod;

4.excavating; and

5.backfilling.

D.The Department will pay the quantity of pole base sheeting at the contract unit price per each.

Price and payment constitute full compensation for:

1.Providing and placing material;

2.cutting off sheeting below grade; and

3.removing sheeting from the project site.

ITEM DESCRIPTION UNIT 834001 POLE BASE, TYPE 1 EACH 834002 POLE BASE, TYPE 2 EACH 834003 POLE BASE, TYPE 2A EACH 834004 POLE BASE, TYPE 2B EACH 834005 POLE BASE, TYPE 3 EACH 834006 POLE BASE, TYPE 3A EACH 834007 POLE BASE, TYPE 3B EACH 834008 POLE BASE, TYPE 3C EACH 834009 POLE BASE, TYPE 4A EACH 834010 POLE BASE, TYPE 4B EACH 834011 POLE BASE, TYPE 6 EACH 834012 POLE BASE, TYPE 6B EACH 834013 POLE BASE EXTENSION CF

834014 SHEETING FOR POLE BASE EACH

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Source: Delaware Standard Specifications for Road and Bridge Construction, 2026 Edition. Pages 504–0 of 786. View official source ↗

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833 GROUNDING

835 CABINET BASES

834POLE BASES, EXTENSIONS, AND SHEETING

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