single mast 4-bolt base

4-Bolt Base

rta single mast 4-bolt base

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Details

RTA Single Mast Arm 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.

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.

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.

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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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 Single Mast Arm 4-Bolt Base

Click on the Product No. to download interactive PDF specification drawing.

Pole HeightProduct No.Butt DiaWallOld Product No.
20′RTA20C6B4M14-**6″0.156”[ 4′ ] 21-082
RTA20C6B4M16-**6″0.156”[ 6′ ] 21-085
RTA20C6B4M18-**6″0.156”[ 8′ ] 21-087
RTA20D6B4M14-**6″0.188”[ 4′ ] 21-002
RTA20D6B4M16-**6″0.188”[ 6′ ] 21-005
RTA20D6B4M18-**6″0.188”[ 8′ ] 21-007
25′RTA25C6B4M16-**6″0.156”[ 6′ ] 21-285W3
RTA25D6B4M14-**6″0.188”[ 4′ ] 21-282
RTA25D6B4M16-**6″0.188”[ 6′ ] 21-285
RTA25D6B4M18-**6″0.188”[ 8′ ] 21-287
RTA25C7B4M14-**7″0.156”[ 4′ ] 21-362
RTA25C7B4M16-**7″0.156”[ 6′ ] 21-365
RTA25C7B4M18-**7″0.156”[ 8′ ] 21-367
RTA25D7B4M14-**7″0.188”[ 4′ ] 21-292
RTA25D7B4M16-**7″0.188”[ 6′ ] 21-295
RTA25D7B4M18-**7″0.188”[ 8′ ] 21-297
30′RTA30C7B4M14-**7″0.156”[ 4′ ] 21-692
RTA30C7B4M16-**7″0.156”[ 6′ ] 21-695
RTA30C7B4M18-**7″0.156”[ 8′ ] 21-697
RTA30C8B4M14-**8″0.156”[ 4′ ] 21-642
RTA30C8B4M16-**8″0.156”[ 6′ ] 21-645
RTA30C8B4M18-**8″0.156”[ 8′ ] 21-647
RTA30D8B4M14-**8″0.188”[ 4′ ] 21-582
RTA30D8B4M16-**8″0.188”[ 6′ ] 21-585
RTA30D8B4M18-**8″0.188”[ 8′ ] 21-587
RTA30D8B4M1A-**8″0.188”[ 10′ ] 21-590
35′RTA35C8B4M14-**8″0.156”[ 4′ ] 21-922
RTA35C8B4M16-**8″0.156”[ 6′ ] 21-925
RTA35C8B4M18-**8″0.156”[ 8′ ] 21-927
RTA35D8B4M14-**8″0.188”[ 4′ ] 21-862
RTA35D8B4M16-**8″0.188”[ 6′ ] 21-865
RTA35D8B4M18-**8″0.188”[ 8′ ] 21-867
RTA35D8C4M18-**8″0.188”[ 8′ ] 21-897
RTA35F8B4M14-**8″0.250”[ 4′ ] 21-882
RTA35F8B4M16-**8″0.250”[ 6′ ] 21-885
RTA35F8B4M18-**8″0.250”[ 8′ ] 21-887
40′RTA40D8B4M14-**8″0.188”[ 4′ ] 50700-041
RTA40D8B4M16-**8″0.188”[ 6′ ] 50700-001
RTA40D8B4M18-**8″0.188”[ 8′ ] 50700-002
RTA40E8B4M16-**8″0.219”[ 6′ ] 50700-005
RTA40E8B4M18-**8″0.219”[ 8′ ] 50700-006
RTA40F8B4M14-**8″0.250”[ 4′ ] 50700-045
RTA40F8B4M16-**8″0.250”[ 6′ ] 50700-009
RTA40F8B4M18-**8″0.250”[ 8′ ] 50700-025