T-Base

double davit arm t-base catalog page

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Details

RTA Double Davit Arm T-Base 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

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.

 
T-Base Cover On

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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T-base anchor bolts in the ground

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 Davit Arm T-Base

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

Pole HeightProduct No.Butt DiaWallOld Product No.
20′RTA20C7BFD24-**7″0.156”[ 4′ ] 44-025
RTA20C7BFD26-**7″0.156”[ 6′ ] 44-026
RTA20C7BFD28-**7″0.156”[ 8′ ] 44-027
RTA20D7BFD24-**7″0.188”[ 4′ ] 44-007
RTA20D7BFD26-**7″0.188”[ 6′ ] 44-008
RTA20D7BFD28-**7″0.188”[ 8′ ] 44-009
25′RTA25C7BFD24-**7″0.156”[ 4′ ] 44-103
RTA25C7BFD26-**7″0.156”[ 6′ ] 44-104
RTA25D7BFD24-**7″0.188”[ 4′ ] 44-079
RTA25D7BFD26-**7″0.188”[ 6′ ] 44-080
RTA25D7BFD28-**7″0.188”[ 8′ ] 44-081
30′RTA30C8BFD24-**8″0.156”[ 4′ ] 44-175
RTA30C8BFD26-**8″0.156”[ 6′ ] 44-176
RTA30D8BFD24-**8″0.188”[ 4′ ] 44-157
RTA30D8BFD26-**8″0.188”[ 6′ ] 44-158
RTA30D8BFD28-**8″0.188”[ 8′ ] 44-159
RTA30D8BFD2A-**8″0.188”[ 10′ ] 44-160
RTA30E8BFD24-**8″0.219”[ 4′ ] 44-163
RTA30E8BFD26-**8″0.219”[ 6′ ] 44-164
RTA30E8BFD28-**8″0.219”[ 8′ ] 44-165
RTA30E8BFD2A-**8″0.219”[ 10′ ] 44-166
RTA30F8BFD24-**8″0.250”[ 4′ ] 44-169
RTA30F8BFD26-**8″0.250”[ 6′ ] 44-170
RTA30F8BFD28-**8″0.250”[ 8′ ] 44-171
RTA30F8BFD2A-**8″0.250”[ 10′ ] 44-172
35′RTA35D8BFD24-**8″0.188”[ 4′ ] 44-229
RTA35E8BFD24-**8″0.219”[ 4′ ] 44-235
RTA35E8BFD26-**8″0.219”[ 6′ ] 44-236
RTA35E8BFD28-**8″0.219”[ 8′ ] 44-237
RTA35F8BFD24-**8″0.250”[ 4′ ] 44-241
RTA35F8BFD26-**8″0.250”[ 6′ ] 44-242
RTA35F8BFD28-**8″0.250”[ 8′ ] 44-243
RTA35F8BFD2A-**8″0.250”[ 10′ ] 44-244
RTA35F1CFD28-**10″0.250”[ 8′ ] 44-261
RTA35F1CFD2A-**10″0.250”[ 10′ ] 44-262
40′RTA40E1CFD24-**10″0.219”[ 4′ ] 44-367
RTA40E1CFD26-**10″0.219”[ 6′ ] 44-368
RTA40E1CFD28-**10″0.219”[ 8′ ] 44-369
RTA40E1CFD2A-**10″0.219”[ 10′ ] 44-370
RTA40F1CFD24-**10″0.250”[ 4′ ] 44-373
RTA40F1CFD26-**10″0.250”[ 6′ ] 44-374
RTA40F1CFD28-**10″0.250”[ 8′ ] 44-375
RTA40F1CFD2A-**10″0.250”[ 10′ ] 44-376
45′RTA45F1CFD28-**10″0.250”[ 8′ ] 44-435
RTA45F1BFD2A-**10″0.250”[ 10′ ] 44-436