. The street railway review . FIG. 8. LAVOIT OF 12-FT. ARCH ON 68 DEGREE SKEW. is a right arch, but the alternate wings stand at 90° and 45° withthe roadway to accommodate a skewed stream. The details of thei2-in. copings on spandrels and g-in. copings on wings are clearlyshown in this view. A lo-lt. arch with 8-ft. height of opening, used as a driveway andstock pass, is shown in Fig. 6. This view is taken from within the stone arch of the same span on the L, E. & W. Ry. which parallelsIhe traction line at this point. Fig. 7 is a 6-ft. span near BroadRipple, having extended spandrels instead o
. The street railway review . FIG. 8. LAVOIT OF 12-FT. ARCH ON 68 DEGREE SKEW. is a right arch, but the alternate wings stand at 90° and 45° withthe roadway to accommodate a skewed stream. The details of thei2-in. copings on spandrels and g-in. copings on wings are clearlyshown in this view. A lo-lt. arch with 8-ft. height of opening, used as a driveway andstock pass, is shown in Fig. 6. This view is taken from within the stone arch of the same span on the L, E. & W. Ry. which parallelsIhe traction line at this point. Fig. 7 is a 6-ft. span near BroadRipple, having extended spandrels instead of wings. One of thearches had a right span of 12 ft., but with 3 skew of 68°, so that thespan in face of arch is 32 ft. The crossing angle is but twenty-twodegrees. Such an extreme skew- would hardly be feasible for anyother construction than reinforced concrete. The lay-out of the. FIG. 9. SECTION PARALLEL TO ROADVVAV. arch is shown in Fig. 8, and a section lakcii iiarallcl to the nnidwayis shown in Fig. 9. While all of the arches on tlie Indian^ipolis Northern are of com-paratively .*hort span, the principles on which they are designed havebeen applied and tested on highway arches of much greater of these highway arches has been built with a span of 80 ft.,height of opening 16 ft. and width of roadway 16 ft. The concretepavement was laid in the bed of the stream under 3 ft. 6 in. ofwater. The arch was designed to carry a uniform live load of 200lb. per sq. ft., and a concentrated live load of a 20-ton road contract price for this bridge complete was $2, or aboutthe same as the cost of a temporary steel bridge for the samelocation. Jones Underfeed Stoker Awarded John Scott Medal. The City of Philadephia holds in trust under the legacy of JohnScott, of Edinburgh, a sum of money, the interest of which is tobe used for the encouragement o
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
