What are the Different Types of Steel Stacks?

There are four types of steel stack that generally used in steel stack are as below:

1. Freestanding (Self-supported) steel stack (fig.1)
2. The base support and guyed steel stack (fig.2)
3. The base support and braced steel stack
4. Multi flue stack (fig.3)

fig.1

fig.2

fig.3