A TUBE TRESTLE PRECAST CONCRETE CHIMNEY

摘要

An improved chimney for industrial and other exhaust, flue gases, comprising, an inner cement concrete chimney having a vertical flue pipe made up of precast rings forming a top portion, the bottom being of conical section filled with wet rubble for washing the exhaust gases, and an outer steel framework surrounding and supporting the said chimney, said steel frame insulated electrically and from its bed feet on earth supports.