Tower Geometry

The Tower form defines the overall shape of the structure.

Parameters

Parameter	Description	Unit	Range
Cross Section	Tower plan shape	—	Triangular, Square
Base Width	Face-to-face width at ground level	m	0.5 – 20.0
Top Width	Face-to-face width at tower top	m	0.3 – Base Width
Total Height	Ground to tower top	m	5.0 – 200.0
Variable Sections	Number of tapered (decreasing width) sections	—	1 – 50
Constant Sections	Number of uniform-width sections at top	—	0 – 20

How Sections Work

The tower is divided vertically into sections. Variable sections taper linearly from base width to top width. Constant sections maintain the top width.

         ┌──┐  ← Top Width
         │  │  Constant Section
         │  │
        /    \  Variable Sections
       /      \   (linear taper)
      /        \
     /          \
    /            \
   /______________\  ← Base Width

Each section becomes one panel in the structural model, with its own:

• Bracing pattern (Type 1–4)
• Member profiles (legs, diagonals, horizontals)
• EPA calculation (wind area per direction)

Section Height

Section heights are calculated automatically:

Section Height = Total Height / (Variable Sections + Constant Sections)

All sections have equal height. Variable sections taper uniformly.

Design Guidance

Tower Height	Typical Variable Sections	Typical Constant Sections
< 30m	4–6	1
30–60m	6–10	1–2
60–100m	10–15	2–3
> 100m	15–25	3–5

tip

More sections = smoother taper but more computation. For most towers, 6–12 total sections gives accurate results without excessive model size.