Truss types

• Truss type 1: Horizontal wooden beams as frames
• Truss type 2: Vertical wooden posts as frames
• Truss type 3: Short-headed wooden frames
• Truss type 4: Short-headed wooden frames with superimposed long heads
• Truss type 5: Long-headed wooden frames with centre posts or scissor braces
• Truss type 6: Long-headed wooden frames without centre posts, etc.
• Truss type 7: Composite frames of wood and metal
• Truss type 8: All-metal frames
• Truss type 9: Means of hanging bells other than in frames
• Truss type 10: Unorthodox types