Prior to placing any pavement, manhole frames and covers, valve boxes, and other such utility access structures shall be adjusted in elevation by the Contractor if needed to match the surface of the new pavement. For overlaying existing pavement, cast iron or ductile iron extensions rated for not less than H-20 loading of a manufacturer and model approved by the Engineer or the designated representative of the Engineer may be used. For other than overlaying of existing pavement, the Contractor shall adjust the height of manhole frames and covers, valve boxes, and other such utility access in a manner acceptable to the Engineer or the designated representative of the Engineer to the grades required for the new pavement.
The area to be treated shall be cleaned by sweeping or other methods approved by the Engineer or the designated representative of the Engineer. Edges of existing pavement to be surfaced shall be bladed to remove vegetation. Pot holes shall be filled with hot mix/cold laid asphalt at the direction of the Engineer or the designated representative of the Engineer. All rate of application and pressure gauges will be inspected and calibrated prior to applying the asphalt cement.
(Ordinance 2007-106, App. B, adopted 3/20/07)
A. 
Application.
Asphaltic surfaces shall be constructed in strict accordance with Item 316 of the TxDOT Standard Specifications for Construction of Highways, Streets and Bridges.
All storage tanks, piping, retorts, booster tanks, and distributors used in storing or handling asphalt shall be kept clean and in good operating condition at all times, and they shall be operated in such a manner that there will be no contamination of the asphalt with foreign material. Asphalt is not to be heated above three hundred fifty (350) degrees Fahrenheit at any time, and when applied, it shall be a temperature of not less than two hundred seventy-five (275) degrees Fahrenheit and not more than three hundred fifty (350) degrees Fahrenheit. The Engineer or the designated representative of the Engineer will select the temperature of application, and the Contractor shall apply the asphalt at a temperature within five (5) degrees of the temperature selected. All asphalt material heated above three hundred fifty (350) degrees Fahrenheit will be rejected.
Asphalt shall be applied on the clean surface by an approved type of self-propelled pressure distributor so operated as to distribute the material in the quantity specified, evenly and smoothly, under a pressure necessary for proper distribution. The Contractor shall provide all necessary facilities for determining the temperature of the asphalt in all of the heating equipment and in the distributor, for determining the rate at which it is applied, and for securing uniformity at the junction of two distributor loads. Asphalt shall be applied for the full width of the surface treatment in one application unless the width exceeds twenty-two (22) feet.
The asphaltic material shall be AC-5 applied at the rate of 0.35 gal/S.Y. Asphaltic material shall not be applied until immediate covering with aggregate is assured.
The aggregate shall be immediately and uniformly applied with an approved self-propelled mechanical spreader at the rate of 1 C.Y./100 S.Y.
B. 
Brooming and Rolling.
The entire surface shall then be broomed and rolled as follows:
The initial rolling shall be with steel wheel rollers and all additional rolling shall be with pneumatic wheel rollers. The brooming and pneumatic wheel rolling shall continue for three (3) days after the date of application of the aggregate. All surplus aggregate shall be removed before final rolling in order to leave the surface free from loose aggregate. The surplus shall be stockpiled for the City of Magnolia to use in case spots should start bleeding.
The rolling equipment shall be approved by the Engineer or the designated representative of the Engineer and shall be as follows:
Steel Wheel Roller shall be self-propelled three wheeled, having a gross weight of not less than six (6) tons and not more than twelve (12) tons.
Pneumatic Wheel Roller shall have a gross weight of not less than ten (1) tons and not more than twenty-five (25) tons. The Contractor shall use one (1) roller per day for each 9.000 S.Y. or major part thereof surface to be worked.
(Ordinance 2007-106, App. B, adopted 3/20/07)
Pavement sections not having an acceptable coverage of aggregate or experiencing excess asphaltic cement shall be corrected by the Contractor at the direction of the Engineer or the designated representative of the Engineer.
(Ordinance 2007-106, App. B, adopted 3/20/07)
The asphaltic material shall be delivered in sealed tank cars or trucks and shall be tested and sealed at the point of loading by an approved testing laboratory. The asphaltic material will be accepted by the City of Magnolia only upon receipt of the certificate of test that shows that it conforms to the above specifications. The Contractor will order all asphaltic materials and make his own arrangements for delivery and storage. The Contractor shall be responsible for the safe and proper storage of asphaltic material. All oil used by the Contractor for heating purposes or for operation of equipment shall be kept in tanks separate and apart from the asphaltic material.
(Ordinance 2007-106, App. B, adopted 3/20/07)