According to the "Implementation Plan for Side Station Supervision of Highway Subgrade Projects", it can be seen that the matters that need to be done for side station supervision are as follows:

According to the determined key parts, key process scope, side stations The content and monitoring methods are:

1. Earth and stone filling

Check the thickness, width, cross slope, flatness and compaction of the filling

Monitoring methods: measurement, testing

2. Soft foundation treatment

Check the replacement material, the quality should meet the design requirements, review the cross-sectional elevation before and after replacement,

Check the delamination thickness.

Monitoring methods: on-site inspection, measurement, and testing.

3. Geosynthetic materials

Check the incoming materials, and the width, laying area and location of the overlap should meet the design requirements.

Monitoring method: on-site inspection, check the data

4. Backfilling of the platform

Control the backfill layer thickness, backfill material, and construction technology to comply with the design or Specification requirements.

Monitoring methods: on-site inspection and testing

5. Concrete pouring

Concrete should meet the design requirements; check the formwork elevation, geometric dimensions, support firmness and reliability properties, concrete grade, slump, tamping density, and pouring layer thickness.

Monitoring methods: on-site inspection, observation, measurement, witness sampling