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Underbuild
It’s common practice for Utilities to include distribution lines on their transmission poles. Fiberglass underbuild crossarms provide a reliable and maintenance free solution, which is also lightweight and easy to install.
PUPI® is the market leader in fiberglass crossarms in distribution with the broadest product offering and over 30 years of on-pole experience. This capability translates to a huge variety of options for transmission underbuild applications. With systems designed for longer spans, heavy loads, and longer arms, PUPI is the market leader in transmission underbuild capability.
RUS drill patterns available across multiple product series including TS-1, TSS-1, and TPS-1, in typical underbuild lengths of 12’ to 16’. A wide variety of custom configurations are also available.
| Tangent Crossarms - Typical Underbuild | ||||
|---|---|---|---|---|
| TB3000 | TB4000 | Inches | RUS Pattern | |
| Load Capacity Per Wire , 4 wires | 5000 LBS | 6000 LBS | 120 | 05x |
| Assembly Weight | 65 LBS | 83 LBS | ||
| Load Capacity Per Wire , 4 wires | 5000 LBS | 6000 LBS | 144 | SPX |
| Assembly Weight | 73 LBS | 94 LBS | ||
| Load Capacity Per Wire , 4 wires | 5000 LBS | 6000 LBS | 168 | SPX |
| Assembly Weight | 82 LBS | 106 LBS | ||
| Load Capacity Per Wire , 4 wires | -- | 6000 LBS | 192 | SPX |
| Assembly Weight | -- | 117 LBS | ||
| Deadend Crossarms - Typical Underbuild | ||||
|---|---|---|---|---|
| DA3000 | DA4000 | Inches | RUS Pattern | |
| Load Capacity Per Wire , 4 wires | 9250 LBS | 11750 LBS | 120 | E4B9X |
| Assembly Weight | 81 LBS | 112 LBS | ||
| Load Capacity Per Wire , 4 wires | 8000 LBS | 11500 LBS | 144 | E4SPX |
| Assembly Weight | 89 LBS | 126 LBS | ||
| Load Capacity Per Wire , 4 wires | -- | 10250 LBS | 168 | E4SPX |
| Assembly Weight | -- | 139 LBS | ||
| Load Capacity Per Wire , 4 wires | -- | 8750 LBS | 192 | E4SPX |
| Assembly Weight | -- | 151 LBS | ||
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