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Wind Power - Corporate Solutions

Wind Power - Corporate Solutions. Stacey Young, P.E. Texas Department of Transportation Lubbock District Pavement Management October 27, 2009. Units by County. 33 Counties impacted 5600 units installed. Estimated Impact/Unit on Infrastructure based on 2.3 MW site. Site Construction

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Wind Power - Corporate Solutions

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  1. Wind Power - Corporate Solutions Stacey Young, P.E. Texas Department of Transportation Lubbock District Pavement Management October 27, 2009

  2. Units by County 33 Counties impacted 5600 units installed

  3. Estimated Impact/Unit on Infrastructurebased on 2.3 MW site Site Construction • Excavation/site: ~ 3000 CY • Foundation: • Total wt: 795 T • Rebar: 43 T • Concrete: 300-350 CY = 600-710 T or ~35 trucks • Base Material: • Total: 180,000 T ~ 8036 trucks • Roadway: 12 mi x 20’ x 8” = 50,000T base • Pad sites: 130,000 T ~ 5000 T/unit Unit Specifics • Tower/power unit & accessories – 806.8 K lbs – 403 T • Power unit: 15.6 K lbs • Misc accessories – 79.2 K lbs • Bolts: 160 – 1½” x 8 ft Issues • Mostly narrow rural roads • Repetitive loads with excess weight / axle • Based on data, permitted loads not impacting roadways due to engineered axle configurations

  4. Transportation Logistics Texas Permitting Requirements • Legal Size/Weight • Width: 8’-6” Length: 65’ • Height: 14’ Weight: 80,000 lbs • OSOW Permits • Required if load exceeds legal size/ weight • Exceeds weight/axle requirement • Bridges requires outside engineer • Route inspection required • W: > 20’ • H: > 18-11” • L: > 125’ • Wt: > 254,300 lbs (SHL permit required) Other than minimal permit fees, TxDOT has not received any compensation for impact on Texas roadways for 5600 units installed to date

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