129 SECTION 214 DESCRIPTION
214.01.01 General. This work consists of furnishing and installing mailbox systems.
MATERIALS
214.02.01 General. Furnish mailboxes which are marked by U.S. Postal Service and equivalent to the sizes
removed (Standard or Large), including proper address labeling. The mailbox systems shall include the mailboxes and mailbox support systems. The mailbox support systems shall be either Type A, B, or C as shown in the plans. The Type C mailbox support shown on Standard Plan Sheet R-12.1.3 shall be from the manufacturers listed in the QPL. The mailbox support systems shall include all posts, brackets, hardware and any other incidentals required to install the completed systems. The required number of installations and types of mounts (single, double, and multiple) will be as indicated on the plans. Equip the mailbox support system posts with a strip of 75 mm x 200 mm (3 in. x 8 in.) white reflective sheeting facing oncoming traffic as shown on the plans. The reflective sheeting shall conform to Subsection 716.03.01 for Type IV, IX, or XI. CONSTRUCTION
214.03.01 General. Install the mailbox systems according to the details shown on the plans and per the
manufacturer’s recommendations. See Subsection 108.04 regarding limitations on the removal of existing and installation of mailboxes. Before installing mailbox systems, give the U.S. Postal Service a minimum of 5 working days written notification so they can arrange their schedule to have a representative present to coordinate the installation of the mailbox systems. METHOD OF MEASUREMENT
214.04.01 Measurement. Mailbox systems will be measured by the each. The each measurement will be by
the number of mailbox systems installed, regardless of the number, size and type of mailboxes attached thereto. BASIS OF PAYMENT
214.05.01 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. Payment will be made under: Pay Item Pay Unit Mailbox System (Single) .................................................................................................................................................................... Each Mailbox System (Double) ................................................................................................................................................................... Each Mailbox System (Multiple) .................................................................................................................................................................. Each 131 SECTION 302 AGGREGATE BASE COURSES DESCRIPTION
302.01.01 General. This work consists of constructing aggregate base courses on a prepared surface.
MATERIALS
302.02.01 General. Material shall conform to the following Subsections:
Type 1 Class A Aggregate Base ............................................................................................................................. Subsection 704.03.02 Type 2 Class A Aggregate Base ............................................................................................................................. Subsection 704.03.04 Type 3 Class A Aggregate Base ............................................................................................................................... Subsection 704.03.06 Type 1 Class B Aggregate Base ............................................................................................................................. Subsection 704.03.03 Type 2 Class B Aggregate Base ............................................................................................................................. Subsection 704.03.05 Type 3 Class B Aggregate Base ............................................................................................................................. Subsection 704.03.07 CONSTRUCTION
302.03.01 Subgrade Preparation. Correct and compact any ruts, holes, defects, or soft yielding places which
occur in the subgrade or subbase to required density and stability before placing an aggregate base course thereon. Make the above mentioned repairs at own expense, except as provided for in Subsection 203.03.02.
302.03.02 Spreading Class A Aggregates. Spread the aggregate in one operation ready for compaction
without further shaping except for trimming to correct minor deficiencies as hereinafter specified. Use a self-propelled spreader with a screed that strikes off and distributes the material to the required width and to the surface tolerances hereinafter set forth. The screed shall be adjustable to the required cross section and capable of spreading 3.6 m (12 ft) in width. Screed action includes any cutting, oscillating, or other practical motion that produces a finished surface texture of uniform appearance. Equipment not propelled by the unloading vehicle will be considered self-propelled. In narrow trench widenings, aggregate base course may be placed with self-propelled trench widening spreaders. If the spreader leaves ridges, indentations, or other objectionable marks that cannot be prevented by adjustments or eliminated by rolling, discontinue its use. Equip the spreader with a control system which will automatically control the trimming of the base material to the specified transverse slope and established longitudinal grade. The control system shall be automatically actuated from an independent line and grade control reference through a system of electronically controlled mechanical sensors which will maintain the trimmer screed at the proper transverse slope and at the proper elevation to obtain the required surface. In case of failure of the control system, operate the trimmer by mechanical control only until the material on the roadbed at the time of breakdown is place d. Motor graders will not be considered to be self-propelled mechanical spreaders unless they are equipped with end wings on the blade, have the blade locked in a position normal to the direction of travel, and are equipped with cross slope and automatic grade controls that are capable of picking up grade from a wire control, and from an external sensing wheel. When motor graders are used, control the initial pass for final grade elevation by the wire line. Control subsequent passes by an electronic sensing device capable of maintaining grade. Reference points will be established on one side of the roadway at reasonable intervals. Furnish, place, maintain, remove, and dispose of all materials required to provide continuous line and grade control to the placing machine. Aggregate bases, placed on road approaches and connections, street intersection areas, median strip areas, shoulder areas, and at locations which are inaccessible to the spreading equipment, may be spread in one or more layers by any means to obtain the specified results. Other than previously provided in this Subsection, the use of motor graders will not be permitted during depositing, spreading and compacting operations, except as follows:
a.Motor graders may be used to correct unavoidable segregation at edges and to trim the surface of the aggregate base after compaction in order to finish the base within the tolerances specified.
Source: Nevada Standard Specifications for Road and Bridge Construction, 2014 Edition. Pages 135–136 of 610.