Show VITRIFIED BRICK FOR ROADS department of agriculture culture issues bulletin on advantages obtained in using this material the united states depart department fent of agriculture has recently issued as bulletin 23 of 0 the now new departmental series serica a contribution from the office of the public broadb and vitrified fied brack as aa a paying paving material for or country roads brick roads have four our distinct advantages durability easy traction easo ease of 0 maintenance and good appearance the high first drat cost Is ie a disadvantage the materials mufed abed arid and the process press 0 of manufacture manu are described as well as methods of 0 testing the bri bricks acks the construction of 0 brick brial roads Is ie et at forth in detail and the various steps in the process are illustrate especial attention is directed to the importance of proper angi engineering gi supervision an appendix gives the method for inspecting and testing paving brick as ae recommended by the american society for testing materials rials |