Chapter 9 Materials

1 WSDOT Construction Manual M Page 9-1 March 2019 Chapter 9 Materials9-1 GeneralThe quality of Materials used on the project will be evaluated and accepted in various ways, whether by testing of samples, visual inspection, or certification of compliance. This Chapter details the manner in which these Materials can be accepted. Requirements for Materials are described in Standard Specifications for Road, Bridge, and Municipal Construction M 41-10 Section 1-06 and Division State Materials Engineer is responsible for the state s Materials approval and acceptance program, and the Quality Assurance Program.

2 Any changes or deviations to the approval or acceptance of Materials , or the Quality Assurance Program beyond what is allowed in this Chapter will require approval from the State Materials Engineer or the Assistant State Materials is the Project Engineer s responsibility to accept Materials in accordance with this Chapter . For Materials that do not meet specification requirements, the Project Engineer shall contact the State Construction Office which will coordinate with the State Materials Laboratory to determine the appropriate PE Authority for Materials Approval and AcceptanceThis Chapter covers the Project Engineer s authority to approve and modify the acceptance of certain Materials while maintaining normal approval and acceptance by the State Materials Laboratory and Region.

3 The use of these processes mentioned within this Section are to be implemented prior to work being performed and not to retroactively justify deficiencies discovered after the completion of work, with the exception that Reducing Frequency of Testing is implemented during the work. It is recommended that the Project Engineer office review the original Record of Materials to determine if items can be modified within the guidelines of this section. The Record of material should be actively maintained per Section Materials accepted in accordance with these options shall be identified in the Project Engineer s preparation of the Certification of Materials under Section SS , options that are available to the Project Engineer for approving and modifying the acceptance of Materials are the following sections.

4 Section Sampling and Testing for Small quantities of Materials Section Reducing Frequency of Testing Section Project Engineer Discretionary Materials Approval/Acceptance Section Optional Approval/Acceptance for MaterialsThe Reduced Acceptance Criteria Checklist DOT Form 350-120 shall be completed and retained in the Materials file when Reducing Frequency of Testing, Sampling and Testing for Small quantities of Materials and Project Engineer Discretionary Materials Approval/Acceptance are invoked. All information requested on the checklist shall be filled in completely.

5 Any items that do not require approval from the State Materials Laboratory and the State Construction Office may be approved at the Project Engineer 9 MaterialsPage 9-2 WSDOT Construction Manual M March 2019 For approval of changes beyond the Project Engineer s authority (items marked with a yes and an x on DOT Form 350-120), a request must be transmitted to the State Materials Laboratory and may require approval from the State Construction Office as well. The completed checklist shall accompany the request and represents the minimum information required to process the modification.

6 The State Materials Laboratory and the State Construction Office have final authority to approve or reject any request for modification. Written approval by the State Materials Laboratory and State Construction Office constitutes agreement with the proposal. The signed checklist and all supporting documentation are to be placed in the project Materials approval contact the following: State Materials Laboratory Areas of responsibility: All changes to Materials approval and acceptance, and to Standard Specifications Division 9. Initial contact: Materials Quality Assurance Engineer State Construction Office Areas of responsibility: Standard Specifications Divisions 1, 2, 3, 4, 5, 6, 7, 8, 10, and Sampling and Testing for Small quantities of MaterialsThe Project Engineer may elect to accept small quantities of Materials without meeting minimum sampling and testing frequencies using the following criteria.

7 The use of this process is to be implemented prior to work being performed and not to retroactively justify deficiencies discovered after the completion of item can be accepted as a small quantity if the proposed quantity for a specific material is less than the minimum required testing frequencyMaterials that will not be considered under the small quantity definition are: Concrete with a 28-day compressive strength of 4000 psi or issues that the Project Engineer may consider prior to use of small quantity acceptance are: Has the material been previously approved?

8 Is the material certified? Do we have a mix design or reference mix design? Has it been recently tested with satisfactory results? Is the material structurally significant?Small quantity acceptance could be visual, by certification, or other methods and the basis of acceptance shall be documented on DOT Form 350-120. For visual documentation, an entry should be made in the project records as to the basis of acceptance of the material , and the approximate quantity small quantity acceptance may be used for any quantity of the following: Curbs and sidewalks Driveways and road approaches Paved ditches and slopesWhere jobsite mixing of concrete occurs in accordance with Standard Specifications Section (4)B small quantity acceptance can be used for acceptance of packaged concrete meeting the requirements of ASTM C 387.

9 The packaged concrete bag must state that the concrete meets the requirements of ASTM C Chapter 9 WSDOT Construction Manual M Page 9-3 March Reducing Frequency of TestingReducing the frequency of testing of Materials is intended for WSDOT projects with a high volume of Materials . In instances of uniform material production where the statistical acceptance testing data shows the material is running well within specification limits deviations from the testing frequency schedule may be instituted. Sampling frequency reduction may be considered only after ten consecutive samples taken at the normal testing frequency indicate full conformance with the specifications.

10 The sampling and testing frequency will revert back to the normal frequency if there are any failing tests. The use of this process is to be implemented prior to work being performed and not to retroactively justify deficiencies discovered after the completion of Statistical Analysis of Materials (SAM) program will be utilized to develop and support approvals to reduce testing frequency and/or to eliminate selected test properties. Testing on selective Materials may be reduced or eliminated without statistical data on select material , for example selective relief would be reduction/elimination of fracture determinations and sand equivalent testing for production from quarry deviations from the testing frequency must be documented in the project records, and fully explained by the Project Engineer.