Arizona republican., 1914-09-29
MAKES
 PAVING REPORT
 ID COMMITTEE
Believes City Could Save Thousands by Adopting New Class of Paving and by Installing Municipal Plant

ZenS Committee on Paving Monroe l Street, for besides presenting an ap- parent solution of securing adequate
 paving for Phoenix at a distinct sav- i ing over that now employed, it also points out that an even greater say i ing could be made were municipal paving plant to be installed.
 As will be seen by the report Man ager Parish recently visited several | California cities and made a careful study of their paving. With the
 information he secured in this man. ner he returned to Phoenix convinc- ed that he was in a position to sug gest the adoption of methods, either | by contract or through the medium of a municipal plant which would result in a distinct saving to the taxpayers and at the same time give class of paving answering all the requirements of the traffic in Phoe- nix. The idea of a municipal paving plant has been growing ever since Mayor Young, previous to his elec- ton as executive of this city, began 1 advocating the handling of the street paving through a city department Had it not been for the fact that heavy bond issues had but recently been voted for other municipal i'm no funds in the city treasury which could be utilized for such a purpose he would have been more active il his work to secure for Phoenix a
 modern municipal paving plant. Manager Parish, like Mayor Young believes that Phoenix should do her own paving. He believes that the
 installation of plant at cost of about S20,000 would result in a saV- ing generally of at least that amount in a very few months. The paving of the streets of the city could then be worked out under a more comprehensive system than that now employed.
 The report of Manager Parish fol-
 lows:
 TO THE CITIZENS COMMITTEE ON PAVING MONROE STREET Gentlemen:
 Complying with your request and 1 the wishes of the Commission, I Jeff
 for Los Angeles August 17th, 1914 and returned to Phoenix September | 1st. The time on the Coast was spent in Investigating and inspecting diff ferent pavements laid in Los Angeles
 and surrounding towns, including Ontario, Santa Monica and Santa Ana l In the city of Los Angeles sheet asphalt pavements predominate. In Santa Ana an asphaltic concrete cement wearing surface F inches in thickness is laid upon a Portland
 cement concrete base 1 inches in
 thickness.
 On the State Highway a inch concrete pavement with a thin oiled wearing surface has been adopted
 and this highway construction is
 proving very popular among the
 smaller towns surrounding Los
 Angeles for pavements upon suburban
 streets.
 Besides the above named pave
 ments some Warrenite. Bitulithic and Oiled Macadam is in evidence.
 found but little concrete pavement | laid without the oiled surface The
 only pavement of this type I ob-
 served was a short stretch known as
 the "Appian Way" along the sea front of Santa Monica. A portion
 of this pavement seems to be all that | could be required but, where laid or steep grades and poor foundation. it l oIi I,1
 longitudinal cracks. In my opinion
 more satisfactory pavement would
 have been secured had the State | Highway or Wayne County Specifi
 cations for concrete roads been fol- i lowed.
 The State Highway Specifications
 adopted by the California State
 Highway Commission call for a 1
 inch Portland cement base composed
 of a 1-2h-5 mix floated to a smooth | sand finish. When the concrete base has set and is absolutely dry. hot
 asphaltic oil is applied at rate not
 exceeding IA of a gallon per square yard. As soon as the oil is applied
 stone chips are sprinkled upon it and
 thoroughly rolled by a heavy road
 roller. The chips with the oil form
 a wearing surface about 3S of an
 inch in thickness which protects the
 pavement and deadens the sound
 made by vehicles. This oiled sur face, if properly applied, will last at least two years and can be re-
 placed in California for about 1Oc
 per square yard. It generally begins
 to wear in small spots which could
 be easily repaired at a nominal cost
 as they appeared, by a, man with a
 simple kit of road tools, and the nec-
 essity of re -surfacing obviated for |
 long time. This pavement is being
 laid in the City of Ontario for 10c
 and 11c per square foot. including
 the grading and preparation of the
 sub grade.
 The State Highway Specifications do not recognize expansion joints;
 the concrete is laid in a continuous | sheet, but expansion cracks form ant | extend clear across the pavement al
 fairly regular intervals, varying iron IT to 30 feet apart, according to thu local range of temperature, and gen
 erally it is along these lines of frac ture that deterioration of the wearin: surface is first noticed.
 Expansion joints should be pro
 vided in the concrete, but in m, judgment it is not necessary to arm0
 them with an oiled surface. Ade
 quate joints could be easily con
 structed by inserting a thin piec