Oklahoma residential appliance installer license prep class instal the last version for android

Exposed combustible mantels or trim may be placed directly on the masonry fireplace front surrounding the fireplace opening providing such combustible materials are not placed within 6 inches (152 mm) of a fireplace opening.

Exposed combustible trim and the edges of sheathing materials such as wood siding, flooring and gypsum board shall be permitted to abut the masonry fireplace sidewalls and hearth extension in accordance with Figure R1001.11, provided such combustible trim or sheathing is not less than 12 inches (305 mm) from the inside surface of the nearest firebox lining.Where masonry fireplaces are part of masonry or concrete walls, combustible materials shall not be in contact with the masonry or concrete walls less than 12 inches (306 mm) from the inside surface of the nearest firebox lining.Masonry fireplaces listed and labeled for use in contact with combustibles in accordance with UL 127 and installed in accordance with the manufacturer's instructions are permitted to have combustible material in contact with their exterior surfaces.Solid masonry units or hollow masonry units grouted solid with not less than 4-inch nominal thickness.Įffective flue area (based on area of fireplace opening)ġ2' hooked around outer bar with 6' extension. 4 bars for each additional 40' or fraction of width or each additional flue.ġ/ 4' ties at 18' and two ties at each bend in vertical steel. 4 full-length bars for chimney up to 40' wide. Smoke chamber wall thickness Unlined wallsįour No. Reinforced to carry its own weight and all imposed loads.ġ0' solid brick or 8' where a firebrick lining is used. 12' fireplace opening ≥ 6 square foot.ġ6' fireplace opening < 6 square foot. TABLE R1001.1 SUMMARY OF REQUIREMENTS FOR MASONRY FIREPLACES AND CHIMNEYS ITEMĨ' fireplace opening < 6 square foot. Masonry fireplaces shall be constructed in accordance with this section and the applicable provisions of Chapters 3 and 4.

Oklahoma residential appliance installer license prep class instal the last version for android