On-site pay-off workers determine the approximate location of the building on the construction site, and after digging the ditch, determine the detailed location and bedding of the building in the ditch. Pop-up the foundation position on the cushion, cover another layer after the foundation is finished, and then use Mo Dou to pop up the position and size of columns, walls, doors and windows on the floor. You also need to pop up 50 cm lines on each floor, commonly known as 50 lines.

Setting-out is a job of surveyors. They are mainly engaged in lofting and setting-out in engineering construction. Pay-off has certain requirements, such as being able to read drawings. Know how to start accurately. Especially need to be careful and responsible.

The work of the on-site pay-off staff includes:

1, supervision of construction and engineering data collection: supervision of construction process, quality, inspection of raw materials, acceptance of foundation, intermediate structure and concealed works, collection and arrangement of engineering data, positioning and setting-out of buildings, etc.

2. Implement the company's quality and safety system and do a good job in production safety: implement the company's quality and safety system and cooperate with the safety officer to do a good job in production safety in all aspects.

3. Do a good job in project acceptance and construction setting-out: be familiar with the drawings, carry out construction setting-out according to the determined design documents, take direct technical responsibility for the positioning and setting-out of the elevation and axis of the project, and check and set-out in time.

4. Engineering technology management: assist the person in charge of engineering technology in technical management.

5. Assist the manager to complete related projects: assist the project manager to arrange and monitor the construction, be responsible for setting out on site, determine the dimension line of walls and columns, and determine the elevation, etc.