DESCRIPTION
619.01.01 General. This work consists of furnishing and installing object markers and guide posts.
MATERIALS
619.02.01 General. Material shall conform to the following Section:
Object Markers and Guide Posts ............................................................................................................................................ Section 721 Flexible Type 2 Object Markers capable of rebounding after impact may be substituted for the metal Type 2 Object Markers indicated in the plans. Use flexible Type 2 Object Markers listed in the QPL. When flexible guide posts are specified for use, use flexible guide posts listed in the QPL. The color of flexible guide posts shall be white and the reflective sheeting shall be as indicated on the plans. The date of manufacture shall be permanently stamped on flexible guide pos ts. CONSTRUCTION
619.03.01 General. Assemble, fasten, set, and align target members and reflectors appropriate to the color
involved. Tighten all fastenings. Install flexible guide posts according to the manufacturer’s recommendations and as specified. Place object markers at approved locations. Install Flexible Type 2 Object Markers according to the manufacturer’s recommendation and as specified. Place guide posts and object markers when ordered for the protection of the public traffic. Replace guide posts and object markers which may be subsequently damaged by public traffic. Replacement guide posts and object markers will also be measured and paid for at the contract unit bid prices. METHOD OF MEASUREMENT
619.04.01 Measurement. Object markers and guide posts will be measured by the each.
BASIS OF PAYMENT
619.05.01 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 proposa l. Payment will be full compensation for the work prescribed in this Section. Guide posts will be paid for on an each basis and each type (rigid or flexible), as specified in the proposal, will be considered separately. Note that the metal guide posts are classified as the rigid type of guide posts. Payment will be made under: Pay Item Pay Unit Guide Posts (type) ............................................................................................................................................................................ Each Object Markers (type) ........................................................................................................................................................................ Each SECTION 621 MONUMENTS DESCRIPTION
621.01.01 General. This work consists of perpetuating survey monuments.
MATERIALS
621.02.01 General. Materials shall conform to the following Section and Subsection:
Portland Cement Concrete ................................ ..................................................................................................................... Section 501 Bar Steel Reinforcement ......................................................................................................................................... Subsection 713.03.01 Concrete shall be Class A or Class AA Portland cement concrete. The NPS 6 [168.3 mm (6.625 in.) outside diameter] galvanized steel pipe riser for survey monuments shall conform to ASTM A53, Type S, Grade B, Schedule 40. The NPS 5 [141.3 mm (5.563 in.) outside diameter] steel pipe for the cover for survey monuments shall conform to ASTM A53, Type S, Grade B, black finish, 3.96 mm (0.156 in.) minimum wall thickness. The welded steel cover for survey monuments shall conform to ASTM A36. Welding shall conform to Section 506. The cast iron cover and ring for survey monuments shall conform to Subsection 712.03.02. The bronze disks for survey monuments shall be commercial quality survey monuments. Provide bronze disks meeting the requirements of the governmental agency having jurisdiction thereof. CONSTRUCTION
621.03.01 Installation. Concrete construction shall conform to Section 502.
Perpetuate survey monuments at existing monument location. Excavate a hole for the survey monument to the required depth. Place concrete for base. Install the bronze disk in the required position for the survey monument after the concrete has set sufficiently. Construct risers and covers as shown on the plans. Label the survey monument covers with the word “Survey.” Use letter heights of at least 25 mm (1 in.). Perpetuate the monuments according to Nevada Revised Statutes Chapter 329 & 625, by a Licens ed Nevada Professional Land Surveyor, and tie to 2 existing NDOT construction control monuments utilizing NDOT’s Special Instruction for Survey or Mapping Consultant’s Manual, which is available from the NDOT Location Division. Public Land Survey Corners are to be set in a survey well and referenced by 4 tie monuments set outside the const ruction zone. Send a copy of the recorded Corner Record for each monument with a written report by the land surveyor identifying the character, location, description, and ties of the new monument to the Chief Land Surveyor, Headquarters Building, 1263 S. S tewart Street, Carson City, Nevada 89712. All found stamped or tagged survey monuments and public land survey corners will be listed in contract plans. Perpetuate all such monuments if they will be destroyed by construction activities. Notify the Engineer of any other survey monuments discovered during construction, which are not listed in the contract plans, which may be disturbed by construction activities. Perpetuate any such discovered survey monuments if directed. METHOD OF MEASUREMENT