Location - For a Project Located on the Caltrans Highway System

The following controls, located on the Input -> Project Information Page, are used to specify the location of the pavement project on a route in California.

eLCAP uses the location of the project for the following:

•obtaining the number of lanes of traffic in the direction of the route using the Caltrans Linear Reference System (LRS)

•computing project length and lane miles for material quantities and equipment time of use estimates

•obtaining traffic counts (AADT, AADTT) from the Caltrans traffic database

•determining an appropriate truck load distribution (WIM station)

•determining an appropriate climate zone from the Caltrans Climate Zone map

The red asterisks (*) indicate that a data item is required.

A pavement project is located on a route by the usual: District-County-Route-Direction, with PM Start and PM End of the start and ending of the pavement project. Postmiles (PM) are fully qualified with prefixes and suffixes. Details on postmiles can be found here.

eLCAP assists with the selection of the starting and ending PMs for a new project by assigning the project Start to be the PM of the beginning of the route and the project End to be the PM associated with a project length of 1.0 mile, after a selection for Direction is made. Shown below is what you will see when you select Route 101 North, in Del Norte county.

After you select North for Direction, eLCAP will generate a Start PM of "M0.000" and a End PM of "R0.967". These PM selections are for the start of Route 101 North in Del Norte county, and the PM associated with a project length of 1.0 miles. The blue text shown below the Start and End PMs shows the length of the project (1.0 miles), the lane miles (2.000) and the average number of lanes for the length of the project (2.00).

You can make changes to the default location for your specific project; generating a default project location gets you up-and-running quickly.

eLCAP will also assist with a manual PM specification, as illustrated below.

If the PM value entered by the user (e.g., 10.000) is not valid, a message in the Error Message Summary text box will be generated.

eLCAP determines the validity of a PM by using the Caltrans Linear Reference System (LRS). The LRS is updated on a regular basis and eLCAP uses the latest official release of it.

eLCAP uses the center-point location of the project to determine an appropriate truck load distribution (i.e., a WIM Station) and an appropriate Climate Zone using Caltrans' LRS. The WIM station and climate zone are use during the Use Stage, which occurs between successive construction life cycle events.

The question mark in the blue circle in the upper-right of the control group allows you to get help on the controls (this topic).

Copyright © 2021 UCPRC