truss arm with 4-bolt base

4-Bolt Base

4-bolt base truss arm catalog page

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Details

RTA Single Truss 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 Truss Arm 4-Bolt Base

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

Pole HeightProduct No.Butt DiaWallOld Product No.
25′RTA25C6B4T18-**6″0.156”[ 8′ ] 31-325
RTA25D6B4T18-**6″0.188”[ 8′ ] 31-169
RTA25C7B4T18-**7″0.156”[ 8′ ] 31-265
RTA25C7B4T1A-**7″0.156”[ 10′ ] 31-268
RTA25D7B4T18-**7″0.188”[ 8′ ] 31-181
RTA25D7B4T1A-**7″0.188”[ 10′ ] 31-184
RTA25D7B4T1C-**7″0.188”[ 12′ ] 31-187
RTA25C8B4T18-**8″0.156”[ 8′ ] 31-277
RTA25C8B4T1A-**8″0.156”[ 10′ ] 31-280
RTA25D8B4T18-**8″0.188”[ 8′ ] 31-195
RTA25D8B4T1A-**8″0.188”[ 10′ ] 31-198
RTA25D8B4T1C-**8″0.188”[ 12′ ] 31-199
RTA25D8C4T1C-**8″0.188”[ 12′ ] 31-237
RTA25D8C4T1E-**8″0.188”[ 15′ ] 31-239
RTA25E8B4T1E-**8″0.219”[ 15′ ] 31-214
30′RTA30C7B4T18-**7″0.156”[ 8′ ] 31-661
RTA30C8B4T18-**8″0.156”[ 8′ ] 31-601
RTA30D8B4T18-**8″0.188”[ 8′ ] 31-529
RTA30D8C4T18-**8″0.188”[ 8′ ] 31-567
RTA30D8B4T1A-**8″0.188”[ 10′ ] 31-532
RTA30D8C4T1A-**8″0.188”[ 10′ ] 31-570
RTA30D8C4T1C-**8″0.188”[ 12′ ] 31-573
RTA30D8C4T1E-**8″0.188”[ 15′ ] 31-575
35′RTA35C8B4T18-**8″0.156”[ 8′ ] 31-925
RTA35D8B4T18-**8″0.188”[ 8′ ] 31-853
RTA35D8C4T18-**8″0.188”[ 8′ ] 31-889
RTA35D8C4T1E-**8″0.188”[ 15′ ] 31-899
RTA35E8B4T18-**8″0.219”[ 8′ ] 31-867
RTA35E8B4T1A-**8″0.219”[ 10′ ] 31-868
RTA35E8C4T1A-**8″0.219”[ 10′ ] 31-906
RTA35E8C4T1C-**8″0.219”[ 12′ ] 31-907
RTA35E8C4T1E-**8″0.219”[ 15′ ] 31-911
RTA35F8C4T1C-**8″0.250”[ 12′ ] 31-921
RTA35F8C4T1E-**8″0.250”[ 15′ ] 31-923
40′RTA40D8C4T18-**8″0.188”[ 8′ ] 50704-014
RTA40E8C4T1A-**8″0.219”[ 10′ ] 50704-045
RTA40F8B4T18-**8″0.250”[ 8′ ] 50704-053
RTA40F8C4T1C-**8″0.250”[ 12′ ] 50704-075
RTA40F8C4T1E-**8″0.250”[ 15′ ] 50704-077
RTA40D1C4T18-**10″0.188”[ 8′ ] 50704-081
RTA40E1C4T1A-**10″0.219”[ 10′ ] 50704-097
RTA40E1C4T1C-**10″0.219”[ 12′ ] 50704-101
RTA40E1C4T1E-**10″0.219”[ 15′ ] 50704-103
RTA40F1C4T1C-**10″0.250”[ 12′ ] 50704-114