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Wind Turbine Tower & Foundation Specifications (27m for 75kW)
Parameter Category | Parameter | Value | Notes/Source |
| Tower General | Height | 27.0 meters | |
Material | Steel (likely Q235) | Foundation uses Q235 | |
Top Diameter | 680 mm | 75kw | |
Bottom Diameter | 1460 mm | 75kw | |
Wall Thickness | 14 mm | Uniform thickness | |
| Number of Sections | 3 | Flange-connected sections | |
Coating | Hot-dip galvanized | ||
| Structural Features | Maintenance Features | 3 maintenance rings | Original 1500mm platform replaced |
Access Ladder | With protective cover | Cover to 2nd section only | |
| Foundation | Foundation Size | 6000 × 6000 mm | Square base |
Foundation Depth | 4.0 m | ||
Top Height Above Backfill | 0.1 m | ||
Concrete Strength | ≥ C25 | ||
| Concrete Cushion | C10, 200 mm thick | "200" dimension in drawing | |
Rebar Cover Thickness | ≥ 40 mm | ||
| Reinforcement | Main Rebar | Ø12 mm | |
Stirrups/Hoops | Ø10 mm | ||
| Anchor System | Anchor Bolts | 24 × M42 × 2900 mm | |
Bolt Circle Diameter (PCD) | 1700 mm | From φ1700 dimension | |
| Anchor Positioning Flange Thickness | 6 mm | δ6 | |
| Grounding | Conductor | 80×5 mm Galvanized Flat Iron | |
Installation Depth | 1.0 m | Driven into base layer | |
Ground Resistance | <10 Ω | ||
Electrical | Cable Conduit | Ø89 mm (DN89) | |
| Design Standards | Seismic Resistance | ≥ Grade 8 | |
Wind Resistance | ≤ Grade 13 | ||
| Soil Bearing Capacity | ≥10 tf/m² |
Key Design Notes:
Foundation Specifications:
Stepped foundation: 6000×6000 mm base with 3000×3000 mm top section
Requires soil bearing capacity ≥10 tf/m² for areas with ≤13 tf/m² loads
Complex geological conditions require local engineering verification
Anchor bolts sealed with concrete post-installation
Maintenance Modifications:
Original 1500mm maintenance platform replaced with 3 maintenance rings
Ladder protective cover limited to 2nd section to prevent blade interference
Structural Details:
Anchor bolts arranged on 1700 mm diameter circle (24 bolts)
Ø12 vertical rebars with Ø10 circular hoops
Q235 steel for all structural components
Environmental Requirements:
Seismic resistance ≥ Grade 8 (Chinese seismic scale)
Wind resistance ≤ Grade 13 (Beaufort scale)
Grounding resistance <10 ohms
Construction Requirements:
Foundation depth adjustable per local regulations (minimum 4.0m shown)
100mm foundation exposure above final grade
All steel components hot-dip galvanized for corrosion protection
*Note: "R850" dimension in drawing likely indicates bolt circle radius (850mm = 1700mm diameter).
