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After curing, screened process colors shall withstand removal when tested by applying 3M Company Scotch Brand <br /> Cellophane Tape No.600 or equivalent tape over the color and removing with one quick motion at 90°angle. <br /> SINGLE SHEET ALUMINUM SIGN <br /> Single sheet aluminum signs shall be fabricated and furnished with or without frame. The Contractor shall furnish the <br /> sheet aluminum in accordance to "Sheet Aluminum" of these special provisions. Single sheet aluminum signs shall be <br /> fabricated from sheet aluminum alloy 6061-T6 or 5052-H38. <br /> Single sheet aluminum signs shall not have a vertical splice in the sheet aluminum. For signs with depth greater than ' <br /> 1220 mm,one horizontal splice will be allowed in the sheet aluminum. <br /> Framing for single sheet aluminum sign shall consist of aluminum channel or rectangular aluminum tubing. The framing <br /> shall have a length tolerance of+3 mm. The face sheet shall be affixed to the frame with rivets of 5-mm diameter. Rivets <br /> shall be placed within the web of channels and shall not be placed less than 13 mm from edges of the sign panels. Rivets <br /> shall be made of aluminum alloy 5052 and shall be anodized or treated with conversion coating to prevent corrosion. The <br /> exposed portion of rivets on the face of signs shall be the same color as the background or legend where the rivets are placed. <br /> Finished signs shall be flat within a tolerance of+3 mm per meter when measured across the plane of the sign in all <br /> directions. The finished signs shall have an overall tolerance within+3 mm of the detailed dimensions. <br /> Aluminum channels or rectangular aluminum tubings shall be welded together with the inert gas shielded-arc welding <br /> process using E4043 aluminum electrode filler wires as shown on the plans. Width of the filler shall be equal to wall <br /> thickness of smallest welded channel or tubing. <br /> FIBERGLASS REINFORCED PLASTIC PANEL SIGN <br /> The Contractor shall furnish fiberglass reinforced plastic panel sign in accordance with ASTM Designation: D3841 and <br /> "Prequalified and Tested Signing and Delineation Materials"of these special provisions. <br /> Fiberglass reinforced plastic shall be acrylic modified and ultraviolet stabilized for outdoor weatherability. The plastic <br /> shall contain additives designed to suppress fire ignition and flame propagation. When tested in accordance with the <br /> requirements in the ASTM Designation: D635,the extent of burning shall not exceed 25 mm. <br /> Fiberglass reinforced plastic shall be stabilized to prevent the release solvents and monomers. The front and back <br /> surfaces of the laminate shall be clean and free of constituents and releasing agents that can interfere with the bonding of <br /> retroreflective sheeting. <br /> The fiberglass reinforced plastic panel sign shall be weather resistant Grade II thermoset polyester laminate. <br /> The fiberglass reinforced plastic panels shall be minimum 3.4 mm thick. Finished fiberglass reinforced plastic panel <br /> signs shall be flat within a tolerance of+3 mm per meter when measured across the plane of the sign in all directions. The <br /> finished signs shall have an overall tolerance within+3 mm of the specified dimensions. <br /> Color of fiberglass reinforced plastic panels shall be uniform gray within Munsel range of N7.5 to N8.5. <br /> Fiberglass reinforced plastic panels shall be cut from a single piece of laminate. Bolt holes shall be predrilled. The <br /> predrilled bolt holes,panel edges,and the front and back surfaces of the panels shall be true and smooth. The panel surfaces <br /> shall be free of visible cracks, pinholes, foreign inclusions, warping and wrinkles that can affect performance and <br /> serviceability. <br /> MEASUREMENT AND PAYMENT <br /> Furnishing signs(except for construction area signs)will be measured by the square meter and the quantity to be paid for <br /> will be the total area,in square meters,of the sign panel types installed in place. <br /> The contract price paid per square meter for furnish sign of the types specified in the Engineer's estimate shall include <br /> full compensation for furnishing all labor,materials,tools,equipment,and incidentals,and for doing all the work involved in <br /> fabricating and furnishing the signs, including fastening hardware, as shown on the plans, as specified in the Standard <br /> Specifications and these special provisions,and as directed by the Engineer. <br /> Full compensation for furnishing and installing protective overlay on signs shall be considered as included in the contract <br /> price paid per square meter for furnish sign of the various types and no separate payment will be made therefor. <br /> 10-1.21 THERMOPLASTIC PAVEMENT MARKING <br /> Thermoplastic traffic stripes pavement markings shall be applied in conformance with the provisions in Section 84, <br /> "Traffic Stripes and Pavement Markings,"of the Standard Specifications and these special provisions. <br /> Thermoplastic material shall be free of lead and chromium, and shall conform to the requirements in State Specification <br /> PTH-02ALKYD. <br /> Contract No. 10-OM7104 <br /> 176 <br />