Statistical analysis of materials
View testing data and the Composite Pay Factor (CPF) of any contract in our computer program that statistically evaluates materials (SAM) according to the requirements of WSDOT Standard Specifications.
The Statistical Analysis of Materials (SAM) is a Materials Laboratory computer program that statistically evaluates materials according to the requirements of WSDOT Standard Specifications. The program will generate acceptance and verification reports with the capability of sending them electronically to both the WSDOT and to outside entities, as required.
Allows contractors and others to access and view WSDOT testing data and the Composite Pay Factor (CPF) of any contract in SAM. Click on 'Login as guest' button and select the work order number (contract number) and the type of material in order to view the SAM data.
Design Builder access
If using the 2016, 2018 specifications, you may request Contractor access and we will give you access to specific projects. You can then enter your testing data for that project, and see the WSDOT data and the CPF.
SAM help for DOT employees (PDF 2.2MB)
SAM help file for contractors (PDF 1.1MB)
Enjoy paid time off.
Our employees earn paid vacation and sick leave every month, as well as 12 paid holidays per year.
Work in a modern environment.
We offer telework options, an infant at work program, flexible work schedules and more.
Continue your learning journey.
Get tuition reimbursement for coursework or trainings related to your job or career ladder.