Laserfiche WebLink
Reviewed for Code <br /> '114. Compliance City of Orono D ( .r, -F� <br /> to j,?„) <br /> Dae z/- //7 <br /> Reviewer <br /> ICC pubIi :A CE S, i lbE <br /> RtCEIVED <br /> APR i 2017 <br /> Home > Back > 2015 Minnesota Residential Code <br /> CITY OF ORONO <br /> 2015 Minnesota Residential Code o <br /> Table of Contents N0 Copy <br /> CHAPTER 10 CHIMNEYS AND FIREPLACES o <br /> SECTION R1001 MASONRY FIREPLACES <br /> R1001.1 General. <br /> Masonry fireplaces shall be constructed in accordance with this section and the applicable provisions of <br /> Chapters 3 and 4. <br /> TABLE R1001.1 SUMMARY OF REQUIREMENTS FOR MASONRY FIREPLACES AND CHIMNEYS <br /> ITEM LETTERa REQUIREMENTS <br /> Hearth slab thickness A 4" <br /> Hearth extension B 8"fireplace opening<6 square foot. <br /> (each side of opening) 12"fireplace opening>_6 square foot. <br /> Hearth extension 16"fireplace opening<6 square foot. <br /> (front of opening) 20"fireplace opening z 6 square foot. <br /> Hearth slab reinforcing D Reinforced to carry its own weight and all imposed loads. <br /> 10"solid brick or 8"where a firebrick lining is used. <br /> Thickness of wall of firebox F Joints in firebrick 1/4"maximum. <br /> Distance from top of opening to throat F 8" <br /> Smoke chamber wall thickness G 6" <br /> Unlined walls 8" <br /> Chimney Four No.4 full-length bars for chimney up to 40"wide. <br /> H Add two No.4 bars for each additional 40"or fraction of <br /> Vertical reinforcingb width or each additional flue. <br /> Horizontal reinforcing J 1/4"ties at 18"and two ties at each bend in vertical steel. <br /> Bond beams K No specified requirements. <br /> Fireplace lintel L Noncombustible material. <br /> Chimney walls with flue lining M Solid masonry units or hollow masonry units grouted solid with <br /> at least 4-inch nominal thickness. <br /> Distances between adjacent flues — See Section R1003.13. <br /> Effective flue area(based on area of fireplace opening) P See Section R1003.15. <br /> Clearances <br /> Combustible material R See Sections R1001.11 and R1003.18. <br /> Mantel and trim See Section R1001.11,Exception 4. <br /> Above roof 3'at roofline and 2'at 10'. <br /> Anchorageb <br /> Strap 3/16," 1" <br /> Number Two <br /> Embedment into chimney 12"hooked around outer bar with 6"extension. <br /> Fasten to 4 joists <br /> Bolts Two 1/2"diameter. <br /> Footing <br /> Thickness T 12"min. <br /> Width 6"each side of fireplace wall. <br /> For SI: 1 inch=25.4 mm, 1 foot=304.8 mm, 1 square foot=0.0929 m2. <br /> Note:This table provides a summary of major requirements for the construction of masonry chimneys and fireplaces. Letter references are to <br /> Figure R1001.1,which shows examples of typical construction.This table does not cover all requirements,nor does it cover all aspects of the <br /> indicated requirements. For the actual mandatory requirements of the code,see the indicated section of text. <br /> a.The letters refer to Figure R1001.1. <br /> b.Not required in Seismic Design Category A,B or C. BACK TO TOP <br />