- Amtrak California
- California Transportation Plan
- Caltrans Property for Sale
- Caltrans Local Development Review
- Legal Expert Witness Consultants
This page contains select software written at Caltrans that is available to the public.
The Air Quality software, such as Caline4 and CO Protocol can now be found on the Environmental Air Quality home page.
CALINE4, CAlifornia LINE Source Dispersion Model, is a modeling program to assess air quality impacts near transportation facilities. It is based on the Gaussian diffusion equation and employs a mixing zone concept to characterize pollutant dispersion over the roadway. It will run on a 286 machine, with or without a math co-processor, but will take an exorbitantly long time. Best is a 386 or better machine with a math co-processor recommended. This file is 220 Kb.
The CALINE4 Manual is now available. It has been scanned from hardcopy to MS Word6.0 for Windows. Therefore, expect to find some anomilies, such as small mistakes in the text from mis-scanning, subscripts in the text not apppearing as subscripts, etc. However, most anomilies should be readily discernible in the graphic nearby. If you find something you cannot decifer, email a message to Mike_Brady@dot.ca.gov identifying the problem. The manual is a self-extracting zipped file of 5 Mb. Uncompressed, it is 6.1 Mb for the text and over 11 Mb for the graphics. Be sure to read the README.1ST after unzipping the file for further instructions on unzipping the text portion of the manual. Because of the document's size, the graphics will be quite slow loading into MSWord6.0. Expect this, but please be patient.
SNAILZ is a DOS computer program, which stands for Soil NAIL (the Z differentiates this version from a previous version of this program). This program was developed for use in stability analysis of slopes, which are reinforced with Soil Nail Retaining Walls. The program uses a bi-linear wedge analysis for failure planes existing at toe of walls and tri-linear wedge for failure planes developing below and beyond the wall toe. It is a fully balanced force equilibrium equation with only soil interslice forces included, based on a mobilized angle of internal friction and cohesion. For more information contact Shawn Wei (email@example.com 916-227-7142) Features of this program are:
- allows up to seven soil layers, multiple slope geometry including allowance for up to two slopes below the wall
- input of water surface (phreatic or piezometric)
- nail size and spacing can be varied
- input of an inclined external force
- input of up to two surcharges
- allows earthquake loading
- can be used for slope stability analysis with or without reinforcement
- can be used for stability analysis of tie-back walls.
512 Weil Hall
P.O. Box 116585
Gainesville, FL 32611-6585
Phone: 352-392-0378 or 800-226-1013
web site: http://mctrans.ce.ufl.edu