Engineering and Contracting . op of wall, is about ft. The sideretaining walls, which have a length of about37 ft. 5 ins., have no buttresses and are builtin two parts, separated by a tar paper joint,the division being in a liorizontal plane atthe elevation of the spring line of the adjacentarched cantilever span. Figure 4 (a) showsa plan of the portion of the side wall belowthe horizontal joint. The portion above thejoint is paneled and carries an ornamental con-crete railing. By referring to Figs. 4 (a) and I4 (b) it will be noted that a 14-ft. section of ithis wall adjacent to the pier
Engineering and Contracting . op of wall, is about ft. The sideretaining walls, which have a length of about37 ft. 5 ins., have no buttresses and are builtin two parts, separated by a tar paper joint,the division being in a liorizontal plane atthe elevation of the spring line of the adjacentarched cantilever span. Figure 4 (a) showsa plan of the portion of the side wall belowthe horizontal joint. The portion above thejoint is paneled and carries an ornamental con-crete railing. By referring to Figs. 4 (a) and I4 (b) it will be noted that a 14-ft. section of ithis wall adjacent to the pier, has no west 23 ft. 5 ins. of the wall have a foot-ing which projects 1 ft. 9 ins. inside and 2 ins. outside of the wall, as shown in Fig. 4(c). Weep holes are provided at each buttressin the end wall; but they are not required inthe side walls, as the buttresses and parts ofthe footings are omitted. A new system of road designation for theconvenience of tourists has been adopted in - io-3 r^? - - - E3-5 -. ,(b) Section CC E&C Fig. 4. Plan and Vertical Sections of Retaining Walls for West Approach of Hopple St. Viaduct. railing. The south retaining wall is similar indesign to the north one, except as to heightand length. Figure 3 (a) shows an elevation of a por-tion of the west, or end, retaining wall whichmarks the beginning of the arched cantileverspans; Fig. 3 (b) shows a vertical section France. road in the country will begiven a name and a number, and these desig-nations will be painted upon direction posts attlie road crossings and the one-hundrcd-meterposts along the roads. The tourist starting ona journey will need only a strip of figures,and he will be able to find his way anywhere. lebruary 11, 1914. Engineering and Contracting 201
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