812Permanent Signing

- PERMANENT SIGNING PERMANENT SIGNING

812.1DESCRIPTION

Install highway signs, delineators and object markers as shown in the Contract Documents. B I D I T E M S U N I T S Barricade (Type 3) (Fixed) Each Sign (*1) (High Performance) Square Foot Sign Post (4" x 6" Wood) ( *2) L i n e a r F o o t Sign Post ( *3 Steel Beam) Linear Foot Sign Post ( *4 U Steel) Linear Foot Sign Post ( *5 Perforated Square Steel Tube) Linear Foot Sign Post (4" x 6" Structural Steel) Linear Foot Sign Post (3 I 2.25 Aluminum) Linear Foot Sign Post Stub and Breakaway Base Plate ( *3) Each Sign Post Breakaway Base Plate ( *3) E a c h Sign Post Footing ( *6 Concrete) Linear Foot Sign Post Footing (Sign Post Square Coupler) ( *11) Each Sign Post Footing (* 5 Perforated Square Steel Tube) Each Signing Object Marker ( *7) E a c h Signing Delineator ( *8) (*9 Rigid, "U" Post) Each Signing Delineator ( *8) (*9 Flexible) (*10 Anchor) Each Signing Delineator ( *8) (*9 Bracket) Each S i g n ( R e m o v e a n d R e s e t ) L u m p S u m *1Type of substrate: Flat Sheet, Reinforced Panel or Overlay *2Type of sign: Flat Sheet Sign or Reinforced Panel Sign *3Size and weight of post: W 6 x 9, W 10 x 12 or W 10 x 22 *4Weight per foot: 2 lbs./ft. or 3 lbs./ft. *5Size of post: 1¾ inch, 2 inch, 2¼ inch or 2½ inch *6Diameter: 18- inch wood post, 24- inch steel beam post or 30- inch steel beam post *7Type: Type 2 or Type 3 *8Type: Type A or Type B *9Color: Yellow or White *10Type: Type 1 or Type 3 *11Size: 2 ¼ inches

812.2MATERIALS

allowed, provide expanded foam foundations according to DIVISION 1700.

the Engineer.

steel delineator posts, aluminum sign blanks, aluminum sign overlay panels, aluminum I-beams, aluminum Z-bars and aluminum post clips that comply with DIVISION 1600.

1800.

comply with DIVISION 2200.

- PERMANENT SIGNING

warps, burrs and other defects.

with the Contract Documents and these requirements: • Cut the ends of all panels at 90º angles to within ⅛ inch of the length shown in the Contract Documents. • If the panel is extrusheet fabrication, do not exceed a 1/32 inch mismatch between the edge of the sheet and the extrusion it is fastened to. • Remove warps, burrs and other defects.

sheeting application using a Class 2 conversion coating according to ASTM B 921, "Standard Specification for Non- hexavalent Chromium Conversion Coatings on Aluminum and Aluminum Alloys". Handle the metal with a mechani cal device or clean canvas gloves, between the etching operation and application of retroreflective sheetin g. Prevent the metal from coming in contact with greases, oils or other contaminants before the application of sheeting, films or inks.

sheeting of the color shown in the Contract Documents. Apply the sheeting to the treated blanks and panels according to the manufacturer’s recommendation, or by a method that will produce an equivalent result. During fabrication of sign faces co mprised of 2 or more pieces of re troreflective sheeting on reinforced panels, carefully match adjacent pieces of sheeting for color to provide uniform appearance and brilliance under both day and night illumination. Any apparent contrast be tween adjacent pieces of applied sheeting or panels is cause for rejection of the sign. Overlap pressure sensitive sheeting a minimum of 3/16 inch at splices. If heat activated sheeting is spliced, the minimum overlap is 3/16 inch. If adjacent sheets of heat activated sheeting are butted together, the gap between adjacent sheets may not exceed 1/32 inch. On reinforced panel signs, vertical splices a minimum of 4 feet apart are permitted. On flat sheet signs, 1 vertical or horizontal splice is permitted. Make horizontal lap splices with the uppermost piece overlapping the lower piece. Splicing is prohibited if the sign face is made using the reverse screen process.

specified in the Contract Documents. Use capital letters and numbers that comply with the standard rounded capital letter alphabets in the latest edition of Standard Alphabets for Highway Signs. Use lowe r case letters that comply with the latest edition of Standard Lower Case Alphabet for Highway Signs. Use initial capital letters that are 1⅓ times the loop height of the lower case letters, from a modified series "E" alphabet in which the stroke width is increased to approximately 1/5 of the height of the letter or number. Make the sign face for flat sheet signs using one of these processes: • Direct Screen: the legend and border color is applied to the face of the sign by the silkscreen process. • Reverse Screen: a transparent color is applied to the face of the sign by the s ilkscreen process to form the legend and border. • Direct Applied: the legend and border is retrorefl ective sheeting applied to th e face of the sign by the appropriate methods. • Digital Printing. Use the Direct Applied process to make the sign face for reinforced panel signs.

legend and border as shown in the Contract Documents. Apply process inks to the sign faces accordin g to the retroreflective sheeting manufacturer’s recommendation, or by a meth od that will produce an equiva lent result. Apply lettering films to the sign faces according to the lettering film manufacturer’s recommendation, or by a method that will produce an equivalent result. - PERMANENT SIGNING

handwritten) black legend on the back of each sign, including the following information: Sign Number (by sign fabricator) Erection Date (by sign installer) (month-day-year)* *A punch-out-the-date option may be used. Locate the legend horizontally, vertically or diagonally along the bottom or right edge of the sign in a position that is not covered up when the sign is installed. On a sign with an area of less than 16 square feet, the legend shall be a minimum of ½ inch in height. On a sign with an area of 16 square feet or more, the legend shall be a minimum of 1 inch in height.

overlays from flat sheet blanks covered with retroreflectiv e sheeting. Prepare the flat sheet blanks and apply the retroreflective sheeting as specified for flat sheet signs. Apply the legend an d border to the retroreflective sheeting as specified for the flat sheet sign.

Fabricate delineators for steel post mount or bracket mount from flat sheet blanks covered with retroreflective sheeting. Prepare the flat sheet blanks and apply the retroreflective sheeting as specified for flat sheet signs.

Fabricate Type 1 object markers from 18-inch by 18-inch flat sheet blanks covered with yellow high performance retroreflective sheeting. Fabricate Type 2 object markers from 6-inch by 12-inch flat sheet sign blanks covered with yellow high performance retroreflective sheeting. Fabricate Type 3 object markers from 12-inch by 36-inch flat sheet blanks covered with yellow high performance retroreflective sheeting with black non-reflective hash marks as shown in the Contract Documents. Prepare the flat sheet blanks and apply the retror eflective sheeting as specified for flat sheet signs.

The number, type and size of posts show n in the Contract Documents are determ ined from theoretical sections. Do not order sign posts until the Engineer provides the length of each post for th e sign or the sign assembly based on actual field measurements (see subsection 812.3c.). Wood posts, steel "U" posts and perforated square steel tube posts may be ordered in stock lengths and cut to the required length in the field. Do not torch-cut steel posts. Drill breakaway holes in the wood posts at the project site. Treat all field cuts and drilled holes in wood posts with preservative material. Paint all cut ends of steel posts with zinc-rich paint. Fabricate steel beam posts, base plates and fuse plates to the specified dimensions. Drill the specified holes in the posts and plates. The preferred method of cutting pl ates is sawcuts; however, flame-cutting is permitted. Grind all edges smooth and remove all burrs projecting beyond the planes of the plate faces, cuts or drilled holes. After the base plates are galvanized, remove all runs or beads in the areas where washers are placed.

812.3CONSTRUCTION REQUIREMENTS

opening of the highway. The Engineer may require that the Contractor mobilize permanent signing operations whenever it is feasible to complete a portion of the project. The Contractor may have to mobilize and, upon completion of all currently feasible work, suspend the permanent signing operations more than once before the project is completed. It is the Contractor’s responsibl e to verify the utility locations. If a temporary sign interferes with the installation of a permanent sign, remove and reset the temporary sign to a location designated by the Engineer.

Documents. Orient the signs in relation to the highway alignment as shown in the Contract Documents. If the Contract does not include the item of Contractor Construction Staking, the Engineer will stake the location of each sign.

- PERMANENT SIGNING If the contract includes Contractor Construction Staking, provide the Engineer with the information necessary to determine the length of each sign post. Provide the Engineer with the vertical and horizontal measurements from the top of the pavement edge to: • the ground line (for posts with no footings) • the top of the footing (for posts with footings) • the top of the stub post base plate (for steel beam breakaway posts) If the Contract does not include the item of Contractor Construction Staking, the Engineer will obtain the measurements necessary to determine the length of each sign post.

Contact Documents. Prevent water from entering the excavated holes.

shape and dimensions shown in the Contract Documents. Remove all non-compacted material from the excavation. Form the t op 12 inches of the footings. Pl ace the reinforcing steel and post sleeves or stub posts in the footings as shown in the Contract Documents. Vibrate the concrete placed in the footings and finish the footings as detailed in the Co ntract Documents. Backfill the footings as detailed in the Contract Documents, placing the backfill soil in uniform layers (maximum layer of 8 inches, loose measurem ent), and compact each layer until no further consolidation is observed.

footings plumb as shown in the Contract Documents. Do not damage the galvanized coating during installation or alter the cross-sectional dimensions of the perforated square steel tubes. Remove and replace any footing damaged during the perforated square steel tube installation.

foundations may be used on Sign Post (4" x 6"), Sign Post (4" x 6" Wood) ( * 2), and Sign Post (*5 Perforated Square Steel Tube). The post hole must be dry or damp with no standing water. Install the foam foundation and post according to the manufacturer’s instructions. Do not substitute a concrete footing with expanded foam.

are installed. The maximum allowable tolerance from vertical is 1 inch (from the top of the post to the ground line).

from the post hole excavation in uniform layers (maximum layer of 8 inches, loose measurement) around the posts, and compact each layer to the or iginal ground line until no further consolidation is observed. After backfilling, drill breakaway holes in the posts as shown in the Contract Documents. Treat the breakaway holes with preservative materials.

the posts, secure the po sts with wedges and seal the gaps be tween the posts and the post sleeves with asphalt material. Drill breakaway holes in the posts as shown in the Contract Documents after the posts are secured. Treat all field cuts and drilled holes in wood posts with materials for preservative treatment.

stub post base plate, plumb the post and tighten the base plate bolt assemblies as detailed in the Contract Documents. Attach the structural tubing to the steel posts.

footings as detailed in the Contract Documents.

posts or damage the coating during installation. Remove and replace damaged posts.

face is vertical. If required for installation, drill the holes in the fabricated signs from the sign face sheeting side. After the sign is installed, the post shall be plumb and secure in the ground. - PERMANENT SIGNING Repair damaged retroreflective sheeting on the sign f aces. Use pressure sensitive retroreflective sheeting to patch the damaged areas, overlapping the damages area a mi nimum of ¼ inch. Match the retroreflective sheeting patch to the adjacent pieces of sheeting for color and uni form appearance and brilliance under both day and night illumination. Repair damaged galvanized areas on posts and structural members by cleaning and painting with zinc- rich paint.

Documents.

details in the Contract Documents. Provide new bolts, nuts , washers, post clips and other attachments as necessary to reset the existing signs. When directed by the Engi neer, repair or replace all existing signs damaged during the removal and resetting operations at own expense.

812.4MEASUREMENT AND PAYMENT

The Engineer will measure the finished face of flat sheet signs, reinforced panel signs and sign overlays by the square foot. The Engineer will measure wood posts, steel beam posts , "U" steel posts, perforated square steel tube posts, structural steel posts, aluminum posts and concrete footings by the linear foot. If the alternate grade of steel beam posts is provided, the measurement is based on the primary grade steel size and weight posts. The Engineer will measure various sizes and types of each sign stub post with breakaway base plate, sign post breakaway base plate, perforated square steel tube sign post footing, object marker and delineator. The Engineer will measure removal and resetting of existing sign by the lump sum. The Engineer will measure each barricade, sign po st square coupler and sign post coupler footing. Payment for the various permanent signing bid items at the contract unit prices is full compensation for the specified work.