Illinois Society of Architects · Chicago · leaf 251
re In thickness, theymay be considered as a portion of the thick-ness required for the surrounding walls.The walls surrounding chimneys having anarea greater than four hundred squareInches shall have an insulating cavity notless than three inches wide surrounding theInner four Inches of fire brick… … mm, f W/, < A %v. p M. W/ ^, • i ■* A // #; Tie. 33. Figr. 34. rigr. 35. risr. 36. rig-. 37. CIIIMNRYS—INSULATING CAVITIES WHERE REQUIRED. SectionFigs. 33, 34 (A) Area of flue. (E) Insulating UninR. (F) Insul.Ttlng cavity. Explanation: If A Is more tliiin 400 sq. In. aninsulating lining (E) is…
Architecture · Building · Architects
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