. Transactions. Fig. 1.—Normal Elevation Showing Supporting BracketAND Cantilever for Mantle-Ring. top of the column and the bottom of the girder on each cornerto prevent any possibility of the columns failing by leaning allin the same direction circumferentially. Across the corners of NEW TYPE OF BLAST-FURNACE CONSTRUCTION. 97 -^5 0 inside dia^of SECTION NORMAL TOPLANE OF GIRDER SECTION SHOWING ACTUALRADIAL DISTANCE TOCENTER LINE OFCOLUMN Fig. 2.—Section through Ashland Furnace, Lake SuperiorIron & Chemical Co. 98 NEW TYPE OF BLAST-FURNACE CONSTRUCTION. the main girders channel
. Transactions. Fig. 1.—Normal Elevation Showing Supporting BracketAND Cantilever for Mantle-Ring. top of the column and the bottom of the girder on each cornerto prevent any possibility of the columns failing by leaning allin the same direction circumferentially. Across the corners of NEW TYPE OF BLAST-FURNACE CONSTRUCTION. 97 -^5 0 inside dia^of SECTION NORMAL TOPLANE OF GIRDER SECTION SHOWING ACTUALRADIAL DISTANCE TOCENTER LINE OFCOLUMN Fig. 2.—Section through Ashland Furnace, Lake SuperiorIron & Chemical Co. 98 NEW TYPE OF BLAST-FURNACE CONSTRUCTION. the main girders channels were riveted at top and bottom toform diagonal braces. These were latticed together verticallyfor greater strength, as shown in Fig. 3, which shows the struc-tural work without the shell. The girders were so located thatthe inner edge of their flanges was 4 in. from the shell at theclosest point, and the corner-braces were put 7 in. from the shellat the closest point, thus leaving plenty of access to the shellfor anything that may be necessary, even behind the girders. The brackets are not riveted to the girders either at topor bottom. This is for the reason that if the bottom ring ofthe shell should give away in any manner and carry the brack-ets out, then, if the latter were riveted to the girder this wouldput a bend in the top or compression f
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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries
