RTA Double Mast 4-Bolt Base Round Tapered Aluminum Pole

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RTA Double Mast 4-Bolt Pole Specifications

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
4-Bolt Cast Aluminum Base Flange of Alloy 356-T6 with Aluminum Bolt Covers (Alloy 356-F) and Stainless Steel Hex Head Attaching Screws.

4bolt-Base-BC-off
Handhole
6″ Butt Diameter – Reinforced, 3″ x 5″ curved Cast Aluminum Frame (Alloy 356-T6) with Aluminum Door and two (2) SS Hex Head Screws. A Grounding Provision incorporating a 3/8″ diameter hole is provided opposite the Handhole.
HH-3x5-Rnd-Re-duo
7″+ Butt Diameters – Reinforced, 4″ x 6″ curved Cast Aluminum Frame (Alloy 356-T6) with Aluminum Door and two (2) SS Hex Head Screws. Reinforced Frame will contain a tapped 3/8″-16NC Grounding Provision.
HH-4X6-500X500
Anchorage
Anchorage Kit will include four (4) L-shaped Steel Anchor Bolts conforming to AASHTO M314-90 Grade 55. Ten inches (10″) of threaded end will be galvanized per ASTM A153. Kits will contain four (4) Hex Nuts, four (4) Lock Washers, and four (4) Flat Washers (all components Galvanized Steel). A bolt circle template will be provided.

Base and Anchorage Details
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ABs-4bolt-split-500x567
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 4-Bolt Base

Download interactive PDF specification drawings of standard RTA Double Mast 4-Bolt Base Poles below.

20' - RTA Double Mast 4-Bolt Base Specification Drawings

Product No. | Pole Height | Butt Dia. | Wall Thickness | Arm Length | Old Product No.
RTA20C6B4M24-** [ 20′ ] 6″ Butt Dia., 0.156” Wall, [ 4′ ] 22-082
RTA20C6B4M26-** [ 20′ ] 6″ Butt Dia., 0.156” Wall, [ 6′ ] 22-085
RTA20C6B4M28-** [ 20′ ] 6″ Butt Dia., 0.156” Wall, [ 8′ ] 22-087

RTA20D6B4M24-** [ 20′ ] 6″ Butt Dia., 0.188” Wall, [ 4′ ] 22-002
RTA20D6B4M26-** [ 20′ ] 6″ Butt Dia., 0.188” Wall, [ 6′ ] 22-005
RTA20D6B4M28-** [ 20′ ] 6″ Butt Dia., 0.188” Wall, [ 8′ ] 22-007

RTA20C7B4M26-** [ 20′ ] 7″ Butt Dia., 0.156” Wall, [ 6′ ] 22-095
RTA20C7B4M28-** [ 20′ ] 7″ Butt Dia., 0.156” Wall, [ 8′ ] 22-097
RTA20D7B4M26-** [ 20′ ] 7″ Butt Dia., 0.188” Wall, [ 6′ ] 22-015
RTA20D7B4M28-** [ 20′ ] 7″ Butt Dia., 0.188” Wall, [ 8′ ] 22-017

25' - RTA Double Mast 4-Bolt Base Specification Drawings

Product No. | Pole Height | Butt Dia. | Wall Thickness | Arm Length | Old Product No.
RTA25C6B4M24-** [ 25′ ] 6″ Butt Dia., 0.156” Wall, [ 4′ ] 22-412
RTA25D6B4M24-** [ 25′ ] 6″ Butt Dia., 0.188” Wall, [ 4′ ] 22-282
RTA25D6B4M28-** [ 25′ ] 6″ Butt Dia., 0.188” Wall, [ 8′ ] 22-287

RTA25C7B4M24-** [ 25′ ] 7″ Butt Dia., 0.156” Wall, [ 4′ ] 22-362
RTA25C7B4M26-** [ 25′ ] 7″ Butt Dia., 0.156” Wall, [ 6′ ] 22-365
RTA25C7B4M28-** [ 25′ ] 7″ Butt Dia., 0.156” Wall, [ 8′ ] 22-367

RTA25D7B4M24-** [ 25′ ] 7″ Butt Dia., 0.188” Wall, [ 4′ ] 22-292
RTA25D7B4M26-** [ 25′ ] 7″ Butt Dia., 0.188” Wall, [ 6′ ] 22-295
RTA25D7B4M28-** [ 25′ ] 7″ Butt Dia., 0.188” Wall, [ 8′ ] 22-297

RTA25C8B4M24-** [ 25′ ] 8″ Butt Dia., 0.156” Wall, [ 4′ ] 22-372
RTA25C8B4M26-** [ 25′ ] 8″ Butt Dia., 0.156” Wall, [ 6′ ] 22-375
RTA25D8B4M26-** [ 25′ ] 8″ Butt Dia., 0.188” Wall, [ 6′ ] 22-305
RTA25D8B4M28-** [ 25′ ] 8″ Butt Dia., 0.188” Wall, [ 8′ ] 22-307

30' - RTA Double Mast 4-Bolt Base Specification Drawings

Product No. | Pole Height | Butt Dia. | Wall Thickness | Arm Length | Old Product No.
RTA30C7B4M24-** [ 30′ ] 7″ Butt Dia., 0.156” Wall, [ 4′ ] 22-692
RTA30C7B4M26-** [ 30′ ] 7″ Butt Dia., 0.156” Wall, [ 6′ ] 22-695
RTA30D7B4M24-** [ 30′ ] 7″ Butt Dia., 0.188” Wall, [ 4′ ] 22-572

RTA30C8B4M24-** [ 30′ ] 8″ Butt Dia., 0.156” Wall, [ 4′ ] 22-642
RTA30C8B4M26-** [ 30′ ] 8″ Butt Dia., 0.156” Wall, [ 6′ ] 22-645
RTA30C8B4M28-** [ 30′ ] 8″ Butt Dia., 0.156” Wall, [ 8′ ] 22-647

RTA30D8B4M24-** [ 30′ ] 8″ Butt Dia., 0.188” Wall, [ 4′ ] 22-582
RTA30D8B4M26-** [ 30′ ] 8″ Butt Dia., 0.188” Wall, [ 6′ ] 22-585
RTA30D8B4M28-** [ 30′ ] 8″ Butt Dia., 0.188” Wall, [ 8′ ] 22-587

RTA30F8B4M26-** [ 30′ ] 8″ Butt Dia., 0.250” Wall, [ 6′ ] 22-605
RTA30F8B4M28-** [ 30′ ] 8″ Butt Dia., 0.250” Wall, [ 8′ ] 22-607

RTA30D1C4M24-** [ 30′ ] 10″ Butt Dia., 0.188” Wall, [ 4′ ] 22-662

35' - RTA Double Mast 4-Bolt Base Specification Drawings

Product No. | Pole Height | Butt Dia. | Wall Thickness | Arm Length | Old Product No.
RTA35C8B4M24-** [ 35′ ] 8″ Butt Dia., 0.156” Wall, [ 4′ ] 22-922

RTA35D8B4M24-** [ 35′ ] 8″ Butt Dia., 0.188” Wall, [ 4′ ] 22-862
RTA35D8B4M26-** [ 35′ ] 8″ Butt Dia., 0.188” Wall, [ 6′ ] 22-865
RTA35D8B4M28-** [ 35′ ] 8″ Butt Dia., 0.188” Wall, [ 8′ ] 22-867

RTA35E8B4M26-** [ 35′ ] 8″ Butt Dia., 0.219” Wall, [ 6′ ] 22-875

RTA35F8B4M24-** [ 35′ ] 8″ Butt Dia., 0.250” Wall, [ 4′ ] 22-882
RTA35F8B4M26-** [ 35′ ] 8″ Butt Dia., 0.250” Wall, [ 6′ ] 22-885
RTA35F8B4M28-** [ 35′ ] 8″ Butt Dia., 0.250” Wall, [ 8′ ] 22-887

RTA35D1C4M24-** [ 35′ ] 10″ Butt Dia., 0.188” Wall, [ 4′ ] 22-942
RTA35D1C4M26-** [ 35′ ] 10″ Butt Dia., 0.188” Wall, [ 6′ ] 22-945
RTA35D1C4M28-** [ 35′ ] 10″ Butt Dia., 0.188” Wall, [ 8′ ] 22-947

40' - RTA Double Mast 4-Bolt Base Specification Drawings

Product No. | Pole Height | Butt Dia. | Wall Thickness | Arm Length | Old Product No.
RTA40D8B4M24-** [ 40′ ] 8″ Butt Dia., 0.188” Wall, [ 4′ ] 50701-041
RTA40D8B4M26-** [ 40′ ] 8″ Butt Dia., 0.188” Wall, [ 6′ ] 50701-001

RTA40F8B4M24-** [ 40′ ] 8″ Butt Dia., 0.250” Wall, [ 4′ ] 50701-045
RTA40F8B4M26-** [ 40′ ] 8″ Butt Dia., 0.250” Wall, [ 6′ ] 50701-009
RTA40F8B4M28-** [ 40′ ] 8″ Butt Dia., 0.250” Wall, [ 8′ ] 50701-010

RTA40D1C4M26-** [ 40′ ] 10″ Butt Dia., 0.188” Wall, [ 6′ ] 50701-013
RTA40D1C4M28-** [ 40′ ] 10″ Butt Dia., 0.188” Wall, [ 8′ ] 50701-014

RTA40E1C4M26-** [ 40′ ] 10″ Butt Dia., 0.219” Wall, [ 6′ ] 50701-015
RTA40E1C4M28-** [ 40′ ] 10″ Butt Dia., 0.219” Wall, [ 8′ ] 50701-016

RTA40F1C4M26-** [ 40′ ] 10″ Butt Dia., 0.250” Wall, [ 6′ ] 50701-017
RTA40F1C4M28-** [ 40′ ] 10″ Butt Dia., 0.250” Wall, [ 8′ ] 50701-018