The steel stack which is generally internally insulated and lined with stainless steel sheets is designed to be supported on steel structure in accordance to ASME-STS 1.

The primary considerations in design and sizing of the stack are;

• Seismic and Wind loads,
• Available Draft and Draft requirements,
• Local environmental requirements,
• Local fire protection and regulations,
• Maximum permissible noise level,
• Flow velocity and exhaust gas pressure drop.
• Atmospheric conditions and corrosion protection
• Acid dew point consideration and material selection
• Thermal design and heat loss through surface