Show DIFFERENT PAVEMENT COSTS figures given on an various kinds of 0 used in test made in pennsylvania the costs of various kinds of sur facings on miles of road forming part of a test road built in 1912 1913 by the bureau of highways ehla are now available twenty sis sections were laid of which six were bituminous macadam mixed method eight bituminous penetration bacad sin am five of concrete base with a bituminous tu top seven reven vitrified fied brick says bays engineering news record aver averaging aging the first cost interest at 4 per cent for beien scars 3 cars and the maintenance the total cost january 1 1920 was per square yard for bituminous macadam penetration sections as compared with for bituminous mixed method macadam for concrete and for forbrick brick |