for Highway Construction Page 546 of 71 5 SECTION 629 – MOBILIZATION
629.01 Description.
Mobilization consists of the necessary preparations to do the work. It includes the movement of personnel, equipment, supplies, and incidentals to the project site, the establishment of offices, buildings , and other facilities necessary for work, premiums on bond and insurance, and other work and costs incurred before beginning production work on contract items. Mobilization payments are divided to account for the preparatory work that is required throughout the contract term.
629.02 Materials.
Not specified.
629.03 Cons truction Requirements.
Not specified.
629.04 Method of Measurement.
The Engineer will measure acceptably completed work by the lump sum.
629.05 Basis of Payment .
The Department will pay for accepted quantities as follo ws: Pay Item Pay Unit Mobilization ............................................................................................. LS After contract award, and upon written request by the Contractor, the Department will issue the first progress payment up to 20 percent of the contract unit price or 2 percent of the total contract amount, whichever is less. Productive work on the project is not required for this payment. Once the Contractor has starte d productive work on the project site, the Department will pay 40 percent of the contract unit price or 4 percent of the total contract amount, whichever is less, on the next progress estimate. If the Contractor did not request the first progress payment, this payment will be up to 60 percent of the contract unit price or 6 percent of the total contract amount, whichever is less. The Department will pay 40 percent of the contract unit price or 4 percent of the total contract amount, whichever is less, on the next progress payment estimate. On co mpletion of work, the Department will pay any remaining mobilization bid amount. for Highway Construction Page 547 of 71 5 SECTION 630 – PAVEMENT MARKINGS
630.01 Description.
Prep are pavement surface and apply waterborne or preformed thermoplastic retroreflective paveme nt markings.
630.02 Materials.
Provide materials as specified in: Paint ............................................................................................................................................. 707 Glass Beads Used in Pavement Markings ............................................................................... 720.08 Provide preformed thermoplastic meeting AASHTO M 249. Provide paint and beads in original packaging showing the lot numbers. Preapproved lots do not need to be tested. For paint lots that have not been preapproved, sample paint materials in accordance with Idaho IR 7 and submit the samples for testing to the Central Materials Laboratory. For bead lots that have not been preapproved, provide a sample 50 pound bag of glass beads for testing by the Central Materials Laboratory. Receive lab approval before using the paint or glass beads. Allow 2 weeks for laboratory testing.
630.03 Construction Requirements.
A.Waterborne Paint .
1.Each paint appli cation will be 17 mil wet film. Additional applications must be placed 10 or more days apart. Place 2 paint applications for permanent pavement markings and 1 paint application for temporary traffic control pavement markings unless otherwise specified or as Engineer directed. When applying pavement markings on undivided highways to a centerline rumble strips or a seal coat, place the second application of centerline paint in the opposite direction of the first application to ensure full visibility of the pavement markings in each direction.
2.Place at least 7 pounds of glass beads per gallon of applied paint .
3.Apply pavement markings to clean and dry pavement when the pavement temperature is bet ween 50°F and 140°F, and the relative humidity is less than 80 percent.
4.Limit the devi ation of longitudinal pavement markings to less than 2 inches per 100 feet. Provide longitudinal pavement markings with a width tolerance of 5 percent. Limit broken line overlap to 1.5 feet.
5.Use glass beads to provide a minimum retroreflectivity of 225 millicandelas per square meter per lux for white pavement markings and 150 millicandelas per square meter per lux for yel low pavement markings.
6.Do not thin paint .
7.Repair tracking marks and spilled or damaged material.
8.Test Strips. Place a paint (no glass beads) test strip onto a clean, smooth ferrous metal panel to determine pavement marking uniformity and thickness. Measure pavement marking thickness in accordance with ASTM D7091. Calculate the applied wet film thickness using the percent volume of solids provided by the manufacturer as follows:
Source: Idaho Standard Specifications for Highway Construction, 2023 Edition. Pages 582–582 of 768.