Includes foundation and applies to stone, brick or concrete chimneys.

Code 5000 applies to employers engaged in construction and/or erection of industrial and commercial chimneys or smokestacks.  The chimneys are constructed from stone, brick or concrete and includes excavation for the laying of foundations.  Bricks, stones or concrete are then layered from the foundation up to the required height.  Steel ladders, if needed, are attached to the chimney.  This operation is mostly performed by specialist contractors in this field of construction, however, this may also be done by general contractors.

This classification also applies to the repairing of industrial and commercial chimneys.  Employers have different methods of repairing these chimneys such as tuck pointing (filling and/or finishing brickwork with cement or mortar), rebricking, exterior concrete replacement, tear-down and rebuilding, reinforcement banding, interior lining includes gunite application, protective brick linings and application of other technical castings.