What is the required distance above any portion of a building within 10 feet horizontally for a masonry chimney?

The required distance for a masonry chimney is determined by its height in relation to nearby structures. A masonry chimney must extend a minimum of 2 feet above any portion of a building that is within 10 feet horizontally. This requirement is established to ensure that emissions from the chimney are effectively discharged above the roofline of the building, preventing any potential hazards related to smoke or exhaust gases. This elevation helps to improve ventilation and reduce the risk of fire or damage to the structure and adjacent properties. The 2-foot height is a widely accepted standard in building codes, which prioritize safety and efficient operation of chimneys.