1. Prepare the construction plan, submit the commencement report and submit it to the supervisor for approval.
2. Be familiar with the construction drawings and organize technical disclosure.
3. overlay facilities.
4, material sampling inspection test, test results submitted to the supervision for approval.
5, subgrade cleaning, shaping, cleaning, watering, rolling; Scroll. Then the subgrade is comprehensively tested, especially the compactness, deflection value and elevation of subgrade. Seriously deal with the place that does not meet the design requirements until it meets the requirements.
6. Re-measure the width, height, longitudinal slope, transverse slope and ultra-high transverse slope of subgrade.
7. The places with loose soft elastic materials on the subgrade surface should be treated, especially the soft elastic materials should be thoroughly treated, and the soft elastic materials should be excavated and backfilled with lime soil or crushed stone soil.
8. In the road trough section, drainage ditches or gravel blind ditches shall be alternately excavated at regular intervals (5 ~ 10m) on the shoulders on both sides to prevent water accumulation in the road trough.
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