00940.00 918 Section 00940 - Signs Description
00940.00 Scope - This Work consists of furnishing, fabricating, and erecting traffic signs of the types
shown.
00940.03 Drawings - Copies of Working Drawings for non- standard signs will be made available to
the Contractor by the Engineer. Standard si gns called for in the Contract Documents shall be constructed using drawings available in FHWA's Standard Highway Signs (FHWA English Version) or ODOT's Sign Policy and Guidelines for the State Highway System . The ODOT sign policy is available on the ODOT Traffic -Roadway Section website. Materials
00940.10 Materials - Furnish Material s for signs meeting the requirements of Section 02910.
Use retroreflective, reflective, or nonreflective sign sheeting as shown. Use sign sheeting colors conforming to t he Federal Highway Administration Color Specifications for Retroreflective Sign and Pavement Marking Materials . In addition, specified color coordinates shall be subject to visual matching by the Engineer to determine that all panels in any one sign match. Construction
00940.40 General - Finished signs shall conform to the designs shown or specified.
Furnish substrate Material as shown. See Table 02910-1 in Section 02910 for sheet aluminum thicknesses for various sizes of signs. Fabricate all components of each individual sign with sheeting from the same Supplier , to ensure that all components are compatible, and are warrantable by the manufacturer. Removable legend does not have to be fabricated with sheeting from the same Suppl ier as the background sheeting on the sign panels. Construct standard signs as shown in the FHWA Standard Highway Signs manual or in ODOT's Sign Policy and Guidelines for the State Highway System .
00940.41 Aluminum Panel Sign Fabrication :
a.General - Fabricate aluminum panel signs as shown or specified. Do not round corners of panels outside the border. Reinforced sheet aluminum signs are not allowed. All aluminum used for sign panels shall be new material.
b.Extruded Aluminum - Each panel of extruded aluminum panel signs shall be a continuous section. Apply the sign sheeting to the extrusion a sufficient distance around the edge to ensure that no aluminum surface is visible on the face of the sign.
c.Sheeting - The sign sheeting applied to the extrusions shall be the background color of the sign.
d.Legend - Signs consisting of only one extrusion may use permanent legend.
e.Transparent Paste - Do not use transparent paste background on extruded aluminum signs. 00940.45
00940.42 Sheet Aluminum Sign Fabrication :
a.General - Cut the sheet aluminum sign to size and shape as shown or specified. The sign shall be free of buckles, warps, dents, cockles, burrs and defects resulting from fabric ation. Before application of retroreflective, reflective, or nonreflective sheeting, treat the entire surface of the sign with a conversion film according to the sheeting manufacturer's recommendations.
b.Mounting Holes:
1.On Posts - Signs having a vertical dimension of less than 48 inches and mounted on wood or metal posts shall have at least two mounting holes. Signs having a vertical dimension of 48 inches or greater shall have three mounting holes. Place the third mounting hole near the center of the sign. Locate mounting holes so the mounting hardware will not cover any portion of the legend unless otherwise shown.
2.On Extruded Aluminum Signs - Provide a minimum of eight mounting holes for sheet aluminum signs mounted on extruded aluminum signs.
00940.43 Plywood Sign Fabrication - Perform all fabrication with saw blades that do not tear
plywood grain. Cut all holes clean and uniform. Splicing is not allowed unless specified. Locate mounti ng holes so that the mounting hardware will not cover any portion of the legend. Provide mounting holes for signs according to 00940.42(b). After fabrication and before the application of retroreflective, reflective, or nonreflective sheeting, seal all edges with plywood sealer tinted to match the color of the panel overlay material. Where retroreflective, reflective, or nonreflective sheeting is to be applied, prepare the surface of the sign according to the sheeting manufacturer's recommendations.
00940.44 Retroreflective, Reflective, or Nonreflective Sheeting Application - Apply the sheeting
according to the sheeting manufacturer's recommendations on extruded aluminum panel signs. Up to 25 percent of the extruded aluminum panel signs required in the Plans will be allowed one manufacturer's splice for each sign. One patch will be allowed for each 50 square feet of sign to a maximum of three patches for each sign. Patches shall be between 3/4 inch and 3 3/8 inches in diameter. No Contractor splices will be allowed. On all other signs, manufacturer's splices are not allowed except as noted on approved shop drawings, or when sign dimensions exceed the sheeting manufacturer's capabilities. Make these splices horizontal with the upper section of sheet ing overlapping the lower by a minimum of 3/8 inch on encapsulated lens sheeting, and butt splice prismatic lens sheeting with no appreciable substrate visible. The use of overlaid transparent paste or electronic cuttable film is not allowed on overlapped splices. No Contractor splices will be allowed.
00940.45 Legend Installation:
a.General - The word "legend" means the entire message and border for a sign. A group of words, numbers or symbols constitute the "message" for a sign. Install the type of legend for each traffic sign as shown. Spacing between letters or numbers shall conform to the FHWA Standard Alphabets for Highway Signs manual . Spacing between words for Series "E" (modified) legend shall be 1.5 times the upper case letter height. Spacing between words for other fonts shall be as tabulated below unless otherwise shown: 00940.46 Legend Series Word Spacing B (0.531) H C (0.625) H D (0.836) H E (1.000) H H = height of upper case letter Spacing between symbols shall conform to FHWA Standard Highway Signs unless otherwise shown. Space all lines equally between side borders unless otherwise shown. Space the legend vertically as shown. For diamond shaped signs, space between lines in the legend a minimum of one half the average letter height and space between the message and the borders equally so the message is centered on the sign.
b.Attachment - Attach removable legend to aluminum panels using aluminum, domed head, 1/8 inch diameter , self -plugging blind rivets. Remove aluminum shavings from the sign face before attaching the legend. The entire sign will be rejected if any shavings are left beneath the legend. Drill 0.128 inch diameter holes in the removable legend and sign panel as shown on the Mounting Details for Removable Legend Standard Drawings . Apply screened legend according to the sheeting manufacturer's recommendations. Apply cut -out legend according to 00940.44. Attach 1 inch retroreflective removable border sections b y placing two rivets 1/2 inch from the end of each border section with additional rivets spaced at a maximum of 6 inches apart, centered in the section. Corner border sections shall be attached with a minimum of five rivets, two rivets 1/2 inch from each end, and the remaining rivet centered in the middle of the section. Attach 2 inch retroreflective removable border sections by placing two rivets 1/2 inch from the end of each border section with additional rivets spaced at a maximum of 6 inch apart, alon g the top and bottom edge of the section. Corner border sections shall be attached with a minimum of five rivets, two rivets 1/2 inch from each end, and the remaining rivet centered in the section.
00940.46 Inspection - The Engineer will inspect signs at the fabrication shop or at the Project Site
or both. Inspection will be for conformance to the Plans and Specifications, for conformance to nighttime visibility , and for rejectable defects. Rejectable defects include scratches, scuffs, tears, or any defect that impacts reflectiveness, readability, or performance. Signs not meeting inspection criteria are to be replaced at no additional cost to the Agency . The Contractor's expense for sign inspection will be according to 00165.91.
00940.47 Sign Erecting - Erect all signs at the locations staked and as shown or directed. Do not
erect individual signs until the sign is complete with legend. Signs not mounted as show n or directed will not be accepted. Erect the signs so the sign face is vertical, unless otherwise directed. When signs are installed on supports 10 feet or less from the edge of guardrail, curb, or Shoulder , set them to reflect 0 to 3 degrees away from traffic. When signs are installed on supports more than 10 feet from the edge of guardrail, curb or Shoulder , set them to reflect 0 to 3 degrees toward traffic. The closest edge of any column or overhead sign Structure s shall be as shown. 00940.90 Where signs are mounted to supports by bolting through the sign, a sheeting manufacturer approved lubricant may be used on the nylon and metal washers to prevent sign sheeting deformation. Replace damaged signs, or signs with sheet deformation, with new signs at no additional cost to the Agency. If a sign installation is a replacement for an existing sign, install the new sign immediately after removal of the existing sign unless otherwise directed. Measurement
00940.80 Measurement - The quantities of signs will be measured on the area basis, by multiplying
the height by width, using the dimensions shown. No deductions will be made for irregular shapes cut from the rectangle. Route markers and other signs fastened to the face of larger signs will be measur ed as separate signs. Payment
00940.90 Payment - The accepted quantities of Work performed under this Section will be paid for
at the Contract unit price, per unit of measurement , for the following items: Pay Item Unit of Measurement
a.Signs, Standard Sheeting, Extruded Aluminum .............................. Square Foot
b.Signs, Standard Sheeting, Sheet Aluminum ................................... Square Foot
c.Signs, Standard Sheeting, Plywood ................................................ Square Foot
d.Signs, Wide Angle Sheeting, Extruded Aluminum .......................... Square Foot
e.Signs, Wide Angle Sheet ing, Sheet Aluminum ............................... Square Foot
f.Signs, Wide Angle Sheeting, Plywood ............................................ Square Foot Items (a), (b), and (c) include payment for signs constructed with only ASTM Type III, ASTM Type IV, or non-reflective sheeting. Items (d), (e), and (f) include payment for signs constructed with any ASTM Type IX or ASTM Type XI sheeting. Payment will be payment in full for furnishing and placing all Material s, and for furnishing all Equipment , labor, and Incidental s necessary to complete the Work as specified. Payment for Work performed under this Section will be limited to 75 percent of the amount due until the Agency has received the signed warranties required by 02910.75. No separate or additional payment will be made for coating backs of aluminum substrate signs.
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Source: Oregon Standard Specifications for Construction, 2024 Edition. Pages 984–987 of 1,268. View official source ↗