👉Here’s a detailed breakdown of the two truss designs shown:

🔹 Truss A
- Slope: 12/12 (steep pitch, symmetrical rise and run) 
- Span (L): Between 5 m and 8.5 m 
- Divisions: 
  - Top chord divided into L/4 + L/4 
  - Bottom chord divided into L/3 + L/3 
- Angles: 60°, 30°, 30° 
- Special Note: Internal angles include 20° and 30°, giving a more distributed load path. 
- Structural Behavior: This layout balances forces with smaller internal angles, making it efficient for moderate spans.

🔹 Truss B
- Slope: 12/12 (same as Truss A) 
- Span (L): Between 5 m and 8.5 m 
- Divisions: 
  - Top chord divided into L/4 + L/4 
  - Bottom chord divided into L/3 + L/3 
- Angles: 60°, 30°, 30° 
- Special Note: Internal angles include 20° and 90°, creating a vertical member. 
- Structural Behavior: The vertical angle (90°) provides stronger vertical support, useful for central load transfer, but may increase material usage compared to Truss A.

⚖️ Comparison
- Both trusses share the same slope and span range. 
- Truss A distributes forces diagonally with smaller angles → lighter, efficient design. 
- Truss B introduces a vertical member → stronger central support, but heavier. 
- Choice depends on load type: 
  - Truss A: Better for uniform roof loads. 
  - Truss B: Better for concentrated loads at mid-span.

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