Housing construction surveying construction plan, housing construction surveying process

It is roughly divided into three stages: building positioning (pay-off), foundation construction (pay-off) and main construction (pay-off).

1. Building positioning, is the first time after the start of the housing construction project, the building positioning participants are: the urban planning department (subordinate survey team) and the surveyors of the construction unit (professional), according to the architectural planning positioning map for positioning, and finally form (at least) 4 positioning piles at the construction site. The pay-off tool is "total station" or "more advanced theodolite".

2. After the foundation construction is set up, the professional surveyors of the construction unit, the person in charge of the construction site and the supervisor jointly carry out the pay-off and measurement review of the foundation project (the supervision personnel are mainly the side station supervision and verification), and finally release the positioning piles of all building axes (according to the size of the building, the axis can also be laid out at interval intervals).

All axis positioning piles are laid out according to the positioning piles (at least 4) of the planning department and the construction plan of the ground floor of the building. The pay-off tool is "theodolite".

After the foundation positioning and pay-off is completed, the surveyors and constructors at the construction site release the edge of the foundation according to the axis of the positioning, and carry out foundation excavation. Pay-off tools: theodolite, gantry panel, wire rope, line pendant, steel tape measure, etc.

Small projects may not have a surveyor, that is, the construction worker will pay off the line.

Note: The foundation axis positioning pile must be led to the permanent buildings or fixtures around the proposed building at the same time as the foundation is laid out, so as to prevent the axis positioning pile from being damaged and used for remediation.

3. After the main construction is put out and the foundation engineering is built to plus or minus zero, it is followed by the first and second floors of the main body. Until the construction and pay-off work of the main body capping, pay-off tools: theodolite, thread pendant, thread rope, ink fountain, steel tape measure, etc.

According to the axis positioning pile and the axis reference line of the external introduction, the construction pay-off.

Use a theodolite to hit the axis on the building, pop up the axis on the construction level of the building, and then release the columns, walls and other edges according to the axis, and so on each floor until the main body is capped.

Q1: How do you know which specific point in reality the coordinates on the master plan map are?

A: It can be known through the field lofting of total station, GPS and other instruments.

Q2: Is the first thing I need to do after getting the drawings to calculate the coordinates of special points?

Check whether there are any contradictions in the direction of the drawing, the dimensions of the annotations, the elevation of the elevation, the relationship between the structures, etc. Q3: About the calculation of the coordinates of special points.

A: According to the geometric relationship between the special point and the known point, calculate the coordinate increment, and then calculate the detailed calculation method of the coordinates, you can purchase a professional book on surveying to learn.

First of all, it's not yao who wants to give you datum points, you pass two points jiu'ke'yi can then put out the points on the graph.

shide

Youxie Shi also has to find Party A and the planning department.

In fact, the principle is that you use a level to measure the height difference between the two points of AB for the assumption that the indoor floor is point B).

Now the reading of the A ruler is, then the point B should be.

Principle: The elevation of all points seen by the filaments in the level is the same.

The elevation of the level at point A as seen by the level is: ;

The elevation of the level at point b as seen by the level is: ;

Assuming that the elevation of the plane where the filament is located in the level is h, then: h=the measurement data of point b x=