DESCRIPTION
627.01.01 General. This work consists of furnishing, erecting , and installing signs, sign supports , and other
materials required for highway signs.
627.01.02 Shop Drawings. Furnish 5 sets of shop drawings for each overhead sign structure for approval.
Do not fabricate overhead sign structures until the shop drawings have been approved. For signs which are shown on the sign summary sheets and are not included in the Standard Highway Sign Book or the Nevada Supplement, the Department will furnish special sign design sheets. Fabricate these signs to conform to the special sign design sheets as well as the drawings noted in the plans. MATERIALS
627.02.01 General. Material shall conform to the MUTCD, the Standar d Highway Signs (FHWA), the Standard
Highway Signs (Nevada Supplement), and the following Section: Sign Materials ................................ ................................ ........................................................................................................ Section 716 Sign panels of sizes 900 mm by 900 mm (36 in. by 36 in.) or smaller, which are mounted on a single post, may be constructed of ultraviolet resistant engineered thermoplastic. Manufacturers of thermoplastic sign panels are listed in the QPL.
627.02.02 Reflectorization. Use Type IV, IX, or XI reflective sheeting material for regulatory and ground
mounted guide sign installations . Use Type IV reflective sheeting for background material and Type IX or XI reflective sheeting for legend on overhead guide sign installations. Use Type IX or XI fluorescent reflective sheeting for warning sign installations. Reflectorized signs made o f molded thermoplastic material shall meet the requirements for Type IV reflective sheeting. Overlay acrylic EC films and inks used for assembly shall be approved for use by the manufacturer of the sheeting material. Use only acrylic EC film to achieve color. The service life of inks and films shall be comparable to the sheeting used. All letters, numerals, symbols, borders, and accessories as necessary for the sign legend shall be directly applied to the sign background or molded to form an integral si gn legend and background on all signs. CONSTRUCTION
627.03.01 Panel Fastenings. Provide the panel sections with suitable fastenings, as shown on the plans, to
permit easy attachment to the supporting frames. Provide panel sections with closure strips at the joints. Panel fastenings shall utilize nylon washers for contact between the reflective sheeting and the metal washer. Pre-paint the exposed portion of fastening hardware on the face of the sign panels with baked enamel or use a commercial quality pre-painted fastener to match the sign face.
627.03.02 Closure Strips. Closure strips are required on aluminum sign panels. Anchor closure strip by
aluminum rivets or approved alternate, colored to match the sign face. 627 PERMANENT SIGNS
627.03.03 Installation. Sign locati ons indicated on the plans are approximate only. Final determination of sign
locations will be made in the field. Construct sign islands as roadway embankment according to Section 203, unless otherwise specified. Structure excavation and backfill shall conform to Sections 206 and 207. Sign illumination systems shall conform to Section 623. Construct footings according to Section 502. Set anchor bolts true to line and grade. Set posts plumb. Construct overhead sign pile foundations according to Section 509. Permanently stamp the date of installation, consisting of month and year, on the back of each sign with metal dies. In lieu of a stamped date, the date may be applied by the use of an electrical engraving tool. Make date visible only on close inspectio n. Place the date on the lower right hand corner when facing the rear of the sign. Apply the stamped date in a manner as not to damage the face of the sign. Clean each sign face according to the reflective material manufacturer’s recommendations. Remove a ll undesirable material that is visible on the face. Do not use abrasives or other cleaning materials that will scratch or otherwise deface the face. Directional signs that are not functional may require covering during the progress of the work. Covers shall be of sufficient size and density to completely block out the message so that it is not visible either during the day or night. Do not use burlap or similar fabrics. Fasten covers securely to prevent movement by wind action and withstand the effects of weathering. Do not apply adhesive tape to the face of a sign. Cover messages on sign faces of all directional signs facing public traffic and directing such traffic to a portion of the project not yet open to public traffic. Exercise care at all times i n the handling, storing, transporting, and erecting of the signs. Repair or replace signs which are damaged. Pipe sign posts may be field cut and drilled to adjust for local conditions when approved. Do not flame cut. Clean all field cuts and abraded areas on steel pipe posts and apply 2 coats of paint having a high zinc dust content conforming to MIL- P-21035. Do not extend the lengths of sign posts by splicing or welding.
627.03.04 Removal. This work consists of removal of existing permanent sign panels, posts , footings , and
overhead sign support structures and foundations . Stockpile sign panels and posts removed, on the jobsite at approved locations or as specified, and they shall remain the property of the Department . Remove and dispose of all concrete from sign posts. When removing signs (panels only) , leave the post and footing to accommodate a new or reset sign panel. Stockpile overhead sign support structures removed, on the jobsite at approved locations or as specified, and they shall rem ain the property of the Depa rtment . Remove sign support structure foundations to a depth of 0.3 m (1 ft) below subgrade or unimproved ground. Where sign support structure foundations conflict with new construction, remove and dispose of the entire foundati on. Backfill resulting holes with approved material and compact as directed. Exercise care when removing and stockpiling signs and structures that are designated for removal. Repair or replace signs and structures damaged by removal.
627.03.05 Reset. Reset existing sign panels on new posts and footings. Existing sign panels will normally be all
or portions of those removed according to Subsection 627.03.04. When resetting sign panels (panels only) and sign panels (overhead), install the panels on existi ng posts or structures as designated. Reset existing overhead sign support structures on new foundations. PERMANENT SIGNS 627 METHOD OF MEASUREMENT
627.04.01 Measurement. Permanent signs will be measured by the square meter (square foot) of sign face
surface. Permanent signs removed will be measured by the square meter (square foot) of sign panel surface removed. Permanent signs reset will be measured by the square meter (square foot) of sign panel surface reset. Permanent sign panels will be measured by the square meter (square foot) of sign panel surface. Permanent overhead sign support structures will be measured by the lump sum for the support structures. Permanent overhead sign support structures removed will be measured by the each. Permanent overhead sign support structures reset will be measured by the each. Roadway embankment material for sign islands will be measured and paid for according to Section 203. BASIS OF PAYMENT
627.05.01 Payment. The accepted quantities, measured as provided above, will be paid for at the contract
price per unit of measurement for the pay items listed below that are shown in the proposal. Payment will be full compensation for the work prescribed in this Section. Structure excavation and backfill required will be considered subsidiary to the pay it ems listed below and no further payment will be made therefore. Payment will be made under: Pay Item Pay Unit Permanent Signs (Ground Mounted) (Metal Supports) .................................................................................. Square Meter (Square Foot) Permanent Signs (Ground Mounted) (Timber Supports) ................................................................................ Square Meter (Square Foot) Permanent Signs, Remove ........................................................................................................................... Square Meter (Square Foot) Permanent Signs, Remove (Panels Only) ................................ ..................................................................... Square Meter (Square Foot) Permanent Signs, Reset ............................................................................................................................... Square Meter (Square Foot) Permanent Signs, Reset (Panels Only) ................................ ................................ ......................................... Square Meter (Square Foot) Permanent Sign Panels (Panel s Only) ................................ .......................................................................... Square Meter (Square Foot) Permanent Sign Panels (Overhead) ................................ ................................ .............................................. Square Meter (Square Foot) Permanent Sign Panels (Overhead) (Remove) ............................................................................................. Square Meter (Square Foot) Permanent Sign Panels (Overhead) (Reset) ................................ ................................................................. Square Meter (Square Foot) Permanent Overhead Sign Support Structures ......................................................................................................................... Lump Sum Permanent Overhead Sign Support Structures, Remove ................................................................................................................... Each Permanent Overhead Sign Support Structures, Re set ................................ ................................ ...................................................... Each SECTION 628 MOBILIZATION DESCRIPTION
628.01.01 General. This work consists of preparatory work and operations necessary for the movement of
personnel, equipment, supplies, and incidentals to the project site before beginning work. This work also consists of furnishing potable water and electricity to Department furnished field laboratories used on the project. Supply the amount of water and electricity necessary to satisfy the requirements of the Department on a 24 hour basis. Make all necessary connections to the laboratories. Qualified personnel who currently hold a Nevada State Contractors Board C2 License Classification shall make electrical connections. Provide a suitable location for the field laboratories, in a secured area, and on level pads. Satisfactorily construct, maintain, and cleanup a settling pond or holding tank for the laboratory drain. METHOD OF MEASUREMENT
628.04.01 Measurement. Mobilization will be measur ed by the lump sum.
BASIS OF PAYMENT
628.05.01 Payment. The accepted quantity, measured as provided above, will be paid at the contract price per
unit of measurement for the pay item listed below that is shown in the proposal. Payment will be full compensation for the work prescribed in this Section. When mobilization does not appear as an item in the proposal, the cost of such work shall be considered included in the contract unit price bid for other items of work and no additional compensation shall be allowed therefore. Payment will be made under: Pay Item Pay Unit Mobilization ................................ .............................................................................................................................................. Lump Sum