PRE-INSTALLATION TESTING. At no additional cost to the Department, the contractor will use a DFT to measure the friction characteristics of the existing pavement to be treated in accordance with ASTM E 1911. Pre-installation testing can be conducted prior to or on the same day as HFST installation. If conducted prior to the installation, the pre-installation testing shall be done within each installation section limits and noted on the shoulder so that the post-installation testing can take place in the same location. If pre- installation testing is to be conducted on the same day as HFST installation, it should be conducted on a section of adjacent pavement (e.g., just beyond the limits of the HFST), as long as the pavement appears to be similar in nature (e.g., constructed at the same time) to the pavement being treated. If there is a change in the pavement surface within the limits of the treated section, pre-installation testing should be conducted on each apparently different pavement. Whenever possible, pre-installation testing should be conducted not more than 20 LF beyond the limits of the HFST. Pre-installation testing should be conducted in one of the wheel paths where friction values are generally lower, but can also be conducted in the center of the lane as approved by the Engineer.
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Sources: Amendment to Contract, Amendment to Advertised Contract