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❑S16. All structural masonry walls are to be professionally designed in <br />accordance with accepted engineering practice. —IRC R301. Masonry <br />walls not requiring professional design shall be detailed and specified in <br />accordance with IRC R603.9.5.1 for Seismic Design Category C. <br />❑S17. Masonry Fireplaces: Combustible material shall not be placed within 2 <br />inches of fireplace smoke chamber or chimney walls. Combustible <br />material shall not be placed within 6 inches of the fireplace opening. No <br />such combustible material within 12 inches of the fireplace opening shall <br />project more than 1/8" for each 1" distance from such an opening. —IRC <br />R1003.18 and R1001.11 <br />❑ S18. Masonry Fireplaces: Show fireplace plan and section views. Show <br />vertical and horizontal reinforcing steel. —IRC R1003 <br />❑S19. Provide 1/2" airspace at tops, sides and ends of girders entering exterior <br />concrete or masonry walls unless woods resistant to decay are used. — <br />IRC 317. <br />❑ S20. Chimneys shall extend at least 2 feet higher than any portion of a <br />building within 10 feet, but shall not be less than 3 feet above the point <br />where the chimney passes through the roof. —IRC R1003.9 <br />111S21. Provide a cross-section of the masonry veneer that includes thickness <br />of total masonry, attachment methods, nailing schedules, ledger sizes and <br />attachment methods, furring details, weather -barrier membrane, etc. <br />❑S22. Note on plans: Special inspection is required for field welding and high <br />strength bolting. 2017 IBC, per Chapter 17 <br />❑S23. Call out on the cover sheet of the plans, that any field welding or <br />torch work, will require a separate "hot work" permit prior to beginning <br />work. IFC 105.6.11. <br />❑ S24. In specification criteria state wood species used for structural lumber. <br />Make sure this information matches what is on plans. <br />S25. Engineer's calculations on floor radiant heat (L.W. concrete). <br />See differed submittals. <br />❑ S26. Call out "naturally durable wood, or wood that is preservative - <br />treated" for the structural members for exterior decks. R317.1.3 <br />❑S27. Specify lumber grade and species in accordance with the IRC span <br />tables for light framing where professional design is not provided. <br />Page 14 of 21 <br />