RTA Double Mast Breakaway T-Base Round Tapered Aluminum Pole

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Pole
The pole shaft will be constructed of seamless extruded tube of 6063 Aluminum Alloy per the requirements of ASTM B221. The shaft assembly shall be full-length heat treated after base weld to produce a T6 temper.

Base Style
Cast Aluminum Transformer Base (T-Base) of Alloy 356-T6 with Aluminum Door and Stainless Steel Hex Head Screw. FHWA Approved Breakaway.

Handhole
6″-10″ Butt Diameters – Tapered Door Opening (9-3/4″ W Base x 9-1/4″ W Top x 11-3/4″ H) with Flush Mount Aluminum Cover and Stainless Steel Hex Head Screw. Grounding Provisions tapped 1/4″-20NC and 1/2″-13NC are provided.
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Anchorage
Base Anchorage includes four (4) L-shaped Steel Anchor Bolts conforming to AASHTO M314-90 Grade 55, four (4) each Heavy-Duty Flat Washers, Lock Washers, and Hex Nuts (all components Galvanized Steel). Ten inches (10″) of threaded end will be galvanized per ASTM A153. Top Connecting Hardware includes four (4) each 1″-8NC x 3-3/4″ Hex Head Bolts, Flat Washers, Heavy-Duty Flat Washers, Lock Washers, and Hex Nuts (all components Galvanized Steel). A bolt circle template will be provided.

Base and Anchorage Details
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Vibration Damper
When determined necessary by Hapco, a Vibration Damper will be factory-installed inside the pole shaft. Customer specification of the damper is available.

Vibration Dampers
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Satin Aluminum Finish
Pole surface will contain a uniform Brushed Aluminum natural finish. Finish to be achieved utilizing specially formulated abrasives in a multi-pass, rotary sanding operation.

Powder Coat Finish
Coating material will be a thermosetting polyester AAMA 2604 Super Durable powder electrostatically applied, oven cured and bonded in a closed loop, automated system. Minimum thickness of finish will be two (2) mils. Hapco’s Powder Coat Finish Warranty on aluminum poles is five (5) years.

Finish Options
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Pole Shaft Warranty
Hapco warrants its aluminum pole assemblies for their lifetime to be free of defects in material and workmanship.

Hapco Lifetime Pole Assembly Warranty
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Specification Drawings - RTA Double Mast Breakaway T-Base

Download interactive PDF specification drawings of standard RTA Double Mast Breakaway T-Base Poles below.

Product No. | Pole Height | Butt Dia. | Wall Thickness | Arm Length | Old Product No.
RTA20C7BFM24-** [ 20′ ] 7″ Butt Dia., 0.156” Wall, [ 4′ ] 24-092
RTA20C7BFM26-** [ 20′ ] 7″ Butt Dia., 0.156” Wall, [ 6′ ] 24-095
RTA20C7BFM28-** [ 20′ ] 7″ Butt Dia., 0.156” Wall, [ 8′ ] 24-097
Product No. | Pole Height | Butt Dia. | Wall Thickness | Arm Length | Old Product No.
RTA25C7BFM24-** [ 25′ ] 7″ Butt Dia., 0.156” Wall, [ 4′ ] 24-362
RTA25C7BFM26-** [ 25′ ] 7″ Butt Dia., 0.156” Wall, [ 6′ ] 24-365

RTA25D7BFM24-** [ 25′ ] 7″ Butt Dia., 0.188” Wall, [ 4′ ] 24-292
RTA25D7BFM26-** [ 25′ ] 7″ Butt Dia., 0.188” Wall, [ 6′ ] 24-295

RTA25C8BFM26-** [ 25′ ] 8″ Butt Dia., 0.156” Wall, [ 6′ ] 24-375

RTA25D8BFM26-** [ 25′ ] 8″ Butt Dia., 0.188” Wall, [ 6′ ] 24-305
RTA25D8BFM28-** [ 25′ ] 8″ Butt Dia., 0.188” Wall, [ 8′ ] 24-307

Product No. | Pole Height | Butt Dia. | Wall Thickness | Arm Length | Old Product No.
RTA30C8BFM24-** [ 30′ ] 8″ Butt Dia., 0.156” Wall, [ 4′ ] 24-642
RTA30C8BFM26-** [ 30′ ] 8″ Butt Dia., 0.156” Wall, [ 6′ ] 24-645
RTA30C8BFM28-** [ 30′ ] 8″ Butt Dia., 0.156” Wall, [ 8′ ] 24-647

RTA30D8BFM24-** [ 30′ ] 8″ Butt Dia., 0.188” Wall, [ 4′ ] 24-582
RTA30D8BFM26-** [ 30′ ] 8″ Butt Dia., 0.188” Wall, [ 6′ ] 24-585
RTA30D8BFM28-** [ 30′ ] 8″ Butt Dia., 0.188” Wall, [ 8′ ] 24-587

Product No. | Pole Height | Butt Dia. | Wall Thickness | Arm Length | Old Product No.
RTA35D8BFM24-** [ 35′ ] 8″ Butt Dia., 0.188” Wall, [ 4′ ] 24-862
RTA35D8BFM26-** [ 35′ ] 8″ Butt Dia., 0.188” Wall, [ 6′ ] 24-865
RTA35D8BFM28-** [ 35′ ] 8″ Butt Dia., 0.188” Wall, [ 8′ ] 24-867

RTA35E8BFM26-** [ 35′ ] 8″ Butt Dia., 0.219” Wall, [ 6′ ] 24-875

RTA35F8BFM28-** [ 35′ ] 8″ Butt Dia., 0.250” Wall, [ 8′ ] 24-887
RTA35D1CFM24-** [ 35′ ] 10″ Butt Dia., 0.188” Wall, [ 4′ ] 24-942

RTA35D1CFM26-** [ 35′ ] 10″ Butt Dia., 0.188” Wall, [ 6′ ] 24-945
RTA35D1CFM28-** [ 35′ ] 10″ Butt Dia., 0.188” Wall, [ 8′ ] 24-947

RTA35E1CFM26-** [ 35′ ] 10″ Butt Dia., 0.219” Wall, [ 6′ ] 24-955

RTA35F1CFM28-** [ 35′ ] 10″ Butt Dia., 0.250” Wall, [ 8′ ] 24-967

Product No. | Pole Height | Butt Dia. | Wall Thickness | Arm Length | Old Product No.
RTA40D8BFM24-** [ 40′ ] 8″ Butt Dia., 0.188” Wall, [ 4′ ] 50703-041
RTA40D8BFM26-** [ 40′ ] 8″ Butt Dia., 0.188” Wall, [ 6′ ] 50703-001
RTA40D8BFM28-** [ 40′ ] 8″ Butt Dia., 0.188” Wall, [ 8′ ] 50703-002

RTA40E8BFM26-** [ 40′ ] 8″ Butt Dia., 0.219” Wall, [ 6′ ] 50703-005

RTA40F8BFM28-** [ 40′ ] 8″ Butt Dia., 0.250” Wall, [ 8′ ] 50703-010

RTA40D1CFM24-** [ 40′ ] 10″ Butt Dia., 0.188” Wall, [ 4′ ] 50703-047
RTA40D1CFM26-** [ 40′ ] 10″ Butt Dia., 0.188” Wall, [ 6′ ] 50703-013
RTA40D1CFM28-** [ 40′ ] 10″ Butt Dia., 0.188” Wall, [ 8′ ] 50703-014

RTA40E1CFM26-** [ 40′ ] 10″ Butt Dia., 0.219” Wall, [ 6′ ] 50703-015

RTA40F1CFM28-** [ 40′ ] 10″ Butt Dia., 0.250” Wall, [ 8′ ] 50703-018

Product No. | Pole Height | Butt Dia. | Wall Thickness | Arm Length
RTA45D8BFM24-** [ 45′ ] 8″ Butt Dia., 0.188” Wall, [ 4′ ]

RTA45E8BFM26-** [ 45′ ] 8″ Butt Dia., 0.219” Wall, [ 6′ ]

RTA45D1CFM24-** [ 45′ ] 10″ Butt Dia., 0.188” Wall, [ 4′ ]
RTA45D1CFM26-** [ 45′ ] 10″ Butt Dia., 0.188” Wall, [ 6′ ]
RTA45D1CFM28-** [ 45′ ] 10″ Butt Dia., 0.188” Wall, [ 8′ ]

RTA45E1CFM26-** [ 45′ ] 10″ Butt Dia., 0.219” Wall, [ 6′ ]

RTA45F1CFM28-** [ 45′ ] 10″ Butt Dia., 0.250” Wall, [ 8′ ]