4-Bolt Base

double davit arm 4-bolt base catalog page

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Details

RTA Double Davit 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 Double Davit Arm 4-Bolt Base

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

Pole HeightProduct No.Butt DiaWallOld Product No.
20′RTA20C6B4D24-**6″0.156”[ 4′ ] 42-031
RTA20C6B4D26-**6″0.156”[ 6′ ] 42-032
RTA20C6B4D28-**6″0.156”[ 8′ ] 42-033
RTA20D6B4D24-**6″0.188”[ 4′ ] 42-001
RTA20D6B4D26-**6″0.188”[ 6′ ] 42-002
RTA20D6B4D28-**6″0.188”[ 8′ ] 42-003
RTA20C7B4D24-**7″0.156”[ 4′ ] 42-025
RTA20C7B4D26-**7″0.156”[ 6′ ] 42-026
RTA20C7B4D28-**7″0.156”[ 8′ ] 42-027
RTA20D7B4D24-**7″0.188”[ 4′ ] 42-007
RTA20D7B4D26-**7″0.188”[ 6′ ] 42-008
RTA20D7B4D28-**7″0.188”[ 8′ ] 42-009
25′RTA25C6B4D24-**6″0.156”
RTA25C6B4D26-**6″0.156”
RTA25D6B4D24-**6″0.188”[ 4′ ] 42-073
RTA25D6B4D26-**6″0.188”[ 6′ ] 42-074
RTA25D6B4D28-**6″0.188”[ 8′ ] 42-075
RTA25D6B4D2A-**6″0.188”[ 10′ ] 42-076
RTA25C7B4D24-**7″0.156”[ 4′ ] 42-103
RTA25C7B4D26-**7″0.156”[ 6′ ] 42-104
RTA25C7B4D28-**7″0.156”[ 8′ ] 42-105
RTA25C7B4D2A-**7″0.156”[ 10′ ] 42-106
RTA25D7B4D24-**7″0.188”[ 4′ ] 42-079
RTA25D7B4D26-**7″0.188”[ 6′ ] 42-080
RTA25D7B4D28-**7″0.188”[ 8′ ] 42-081
RTA25C8B4D26-**8″0.156”
RTA25C8B4D28-**8″0.156”
RTA25C8B4D2A-**8″0.156”
RTA25D8B4D24-**8″0.188”[ 4′ ] 42-085
RTA25D8B4D26-**8″0.188”[ 6′ ] 42-086
RTA25D8B4D28-**8″0.188”[ 8′ ] 42-087
RTA25D8B4D2A-**8″0.188”[ 10′ ] 42-088
30′RTA30D6B4D24-**6″0.188”
RTA30C7B4D24-**7″0.156”[ 4′ ] 42-145
RTA30C7B4D26-**7″0.156”[ 6′ ] 42-146
RTA30C7B4D28-**7″0.156”[ 8′ ] 42-147
RTA30C8B4D24-**8″0.156”[ 4′ ] 42-175
RTA30C8B4D26-**8″0.156”[ 6′ ] 42-176
RTA30C8B4D28-**8″0.156”[ 8′ ] 42-177
RTA30C8B4D2A-**8″0.156”[ 10′ ] 42-178
RTA30D8B4D24-**8″0.188”[ 4′ ] 42-157
RTA30D8B4D26-**8″0.188”[ 6′ ] 42-158
RTA30D8B4D28-**8″0.188”[ 8′ ] 42-159
RTA30D8B4D2A-**8″0.188”[ 10′ ] 42-160
RTA30E8B4D24-**8″0.219”[ 4′ ] 42-163
RTA30E8B4D26-**8″0.219”[ 6′ ] 42-164
RTA30E8B4D28-**8″0.219”[ 8′ ] 42-165
RTA30E8B4D2A-**8″0.219”[ 10′ ] 42-166
RTA30F8B4D24-**8″0.250”[ 4′ ] 42-169
RTA30F8B4D26-**8″0.250”[ 6′ ] 42-170
RTA30F8B4D28-**8″0.250”[ 8′ ] 42-171
RTA30F8B4D2A-**8″0.250”[ 10′ ] 42-172
35′RTA35C8B4D24-**8″0.156”[ 4′ ] 42-223
RTA35C8B4D26-**8″0.156”[ 6′ ] 42-224
RTA35C8B4D28-**8″0.156”[ 8′ ] 42-225
RTA35D8B4D24-**8″0.188”[ 4′ ] 42-229
RTA35D8B4D26-**8″0.188”[ 6′ ] 42-230
RTA35D8B4D28-**8″0.188”[ 8′ ] 42-231
RTA35D8B4D2A-**8″0.188”[ 10′ ] 42-232
RTA35E8B4D24-**8″0.219”[ 4′ ] 42-235
RTA35E8B4D26-**8″0.219”[ 6′ ] 42-236
RTA35F8B4D24-**8″0.250”[ 4′ ] 42-241
RTA35F8B4D26-**8″0.250”[ 6′ ] 42-242
RTA35F8B4D28-**8″0.250”[ 8′ ] 42-243
RTA35F8B4D2A-**8″0.250”[ 10′ ] 42-244
RTA35D1C4D28-**10″0.188”[ 8′ ] 42-249
RTA35D1C4D2A-**10″0.188”[ 10′ ] 42-250
40′RTA40D8B4D24-**8″0.188”[ 4′ ] 42-325
RTA40D8B4D26-**8″0.188”[ 6′ ] 42-326
RTA40D8B4D28-**8″0.188”[ 8′ ] 42-327
RTA40F8B4D24-**8″0.250”[ 4′ ] 42-337
RTA40F8B4D26-**8″0.250”[ 6′ ] 42-338
RTA40F8B4D28-**8″0.250”[ 8′ ] 42-339
RTA40F8B4D2A-**8″0.250”[ 10′ ] 42-340
RTA40D1C4D26-**10″0.188”[ 6′ ] 42-375
RTA40D1C4D28-**10″0.188”[ 8′ ] 42-363
RTA40D1C4D2A-**10″0.188”[ 10′ ] 42-364
RTA40F1C4D2A-**10″0.250”[ 10′ ] 42-376