181-26 Exhibit A- Final Specifications_compressed.pdf

weight for blended hydraulic cement Type IL. Ensure that a scaling test according to ASTM C 672 is completed on the mix design if more than 30 percent slag is used and that the concrete has a visual rating less than 3 after 50 cycles. Do not add additional mineral admixtures to blended hydraulic cements Type IS or IP at the concrete plant unless approved by the ME. The use of additional mineral admixtures in blended hydraulic cement Type IL at the concrete plant is permitted if the mineral admixture is listed on the QPL Do not mix different brands of cement, the same brand of cement from different mills, or different types of cement. Provide suitable means for storing and protecting the cement against dampness. The ME will reject cement that has become partially set or that contains lumps of caked cement. Ensure that the temperature of the cement at the time of delivery to the mixer does not exceed 160 °F. SECTION 911 – SIGNS, SIGN SUPPORTS, AND DELINEATORS 911.01.01 Materials B. Retroreflective Sheeting. TABLE 911.01.01-2 IS CHANGED TO: THE SECOND SIGN TYPE IN TABLE 911.01.01-2 IS CHANGED TO: Table 911.01.01-2 Allowable Sign Sheeting Types Sign Type Test Method Type Type III, Type VIII, Regulatory and Warning Signs ASTM D 4956 Type IX or Type XI1 Type III, Type VIII, Guide Signs Mounted on Steel “U” or Square Tube Posts ASTM D 4956 Type IX or Type XI Guide Signs Mounted on Overhead Sign Structures, Breakaway Sign Type VIII, Type IX or ASTM D 4956 Supports, or Non-breakaway Sign Supports

ASTM D 4956 Supports, or Non-breakaway Sign Supports Type XI2 1. Ground-mounted signs with white background shall be ASTM Type IX. 2. Do not use ASTM Type XI sheeting with any existing sign lighting improvement or signs that are lit. 911.01.02 Fabrication A. Sign Panels. THE SECOND PARAGRAPH IN PART A IS CHANGED TO: Fabricate flat sheet signs from a single piece of sheet aluminum without joints, using the thicknesses specified in Table 911.01.02-1. Drill or punch 3/8 inch diameter holes in the sign blank for attachment to sign supports. Locate holes according to the 2004 Edition of Standard Highway Signs and Markings Book. If the panel is larger than 5 feet in any dimension, reinforce the panel with z-bars. THE THIRD PARAGRAPH OF PART A IS CHANGED TO: For multiple panel signs, use 1 foot wide extruded sections bolted together. Join sign panel sections together at the flanges with 3/8 inch bolts. Attach the sign panels to vertical supports, ensuring that the span between vertical supports is a maximum of 18 feet. Do not use extruded sign panels with steel “U” or square tube post sign supports. Use the same material and color for trim molding that is used for the sign face. C. Legends and Borders. THE FIRST PARAGRAPH IN PART C IS CHANGED TO: The legend for each sign consists of letters, numerals, shields, and other symbols. Use Series E Modified 2000 lettering that conforms to the 2004 Edition of Standard Highway Signs and Markings Book. Ensure that the lettering HELEN AVE., LAWRENCE AVE., FLORENCE PL., AND LOWELL AVE., IMPROVEMENTS PROJECT Page 71 of 76