. Electric railway journal . of trafficon the paving material that had been forced above thegrade of the tracks. In more cases of this kind thematerial was either forced out or reduced to smallpieces, as shown in the fourth view. The gradient atthis point is 2 per cent and the width of roadway 44 ft. On page 918 are shown pictures of other effects onbrick paving. One is from a pavement laid five yearsago, where the brick along the car tracks has been re-moved because of its interference with traffic. Thegrades on these streets are light and the traffic ofmedium character. The tracks shown had
. Electric railway journal . of trafficon the paving material that had been forced above thegrade of the tracks. In more cases of this kind thematerial was either forced out or reduced to smallpieces, as shown in the fourth view. The gradient atthis point is 2 per cent and the width of roadway 44 ft. On page 918 are shown pictures of other effects onbrick paving. One is from a pavement laid five yearsago, where the brick along the car tracks has been re-moved because of its interference with traffic. Thegrades on these streets are light and the traffic ofmedium character. The tracks shown had in most casesbeen cleaned and been kept clear of snow by the cartraffic. The other shows a track in a small town innorthern Oregon which had not had the advantage ofconstant traffic and cleaning. Here the brick, laid in1912, raised a full 5 in. above the rail and temporarilyprecluded the use of the track for car service. All of the brick paving illustrated was of practicallythe same construction and showed that either cement. FROST-HEAVED BRICK PAVEMENT WITH BRICK REMOVED TO PERMIT TRAFFIC TO PASS—ANOTHER VIEW OF THE SAME PAVEMENT SHOWING FORCING OUT OR PULVERIZING OF PAVING MATERIAL 918 ELECTRIC RAILWAY JOURNAL [VOL. XLVII, No. 20
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