What is the pay off hole support plank for? What is a pay off hole? How does it work?

It is to use an ink fountain to bounce the line on the wall or board, which is generally used for carpentry formwork, rebar binding, bricklayer masonry wall use, and is used to control the size of the bay.

It is the pay-off hole used for the upper and lower floor square lines, which is commonly used on the construction site for the positioning of the upper and lower floor axes, about 20 centimeters square, it is enough to reserve a hole in the cast-in-situ floor slab on the floor, and the vertical instrument is used to cast a vertical line through the hole.

The introduction of the pay-off upstairs is good, but it is not professional, it is difficult to understand, I said it simply, the pay-off is a tool (ink fountain) with ink on the ground or wall, and then the worker can work according to this black line.

Pay-off is the technical staff according to the drawing axis position to determine the control line, generally use the laser plumb meter to control the verticality, with the theodolite to control the angle and cast the straight line. Eject with an ink fountain. This is the basic skill of the architecture profession.

Pay-off control is a hole specially set up for pay-off, square, 15-20cm long, according to the need, should not be too large (not easy to repair in the later stage), not too small (easy to offset with the floor below, can not be used).

That is, when you pay off the second layer, put a horizontal vertical meter on the intersection of the first layer of large lines, and cast the point on the upper pay-off hole with a laser plate.

Wooden frames, wooden shelves are utensils used to store clothes, documents, etc., square or rectangular, generally wooden or iron.

In-house. A cabinet is a rectangular piece of furniture that is tall and large enough to store items. The use of cabinets began in the Xia, Shang and Zhou periods, when it was called "椟".

In the Ming and Qing dynasties, cabinets became a must-have furniture for interiors, and the shape was finalized. Ming and Qing cabinets can be divided into square corner cabinets, rounded corner cabinets, and bright lattice cabinets according to the shape, and their constituent parts are also different. Cabinet furniture mainly refers to cabinets made of materials such as wood, wood-based panels or metal for various purposes.

You may be saying that the floor pay-off should be used in the floor slab with three holes to control the xy axis.

Pay-off is to use measurement technology according to the requirements of the drawings to release the position and size of the structure on the ground or the building, which is only the first step of the building, and you can continue the work after placing the line, such as excavation and pouring. It's all just at this size. Roughly divided into three stages:

Building positioning (pay-off), foundation construction (pay-off) and main construction (pay-off).

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

Second, the foundation construction pay-off, after the building positioning pile is set, by the professional surveyors of the construction unit, the person in charge of the construction site and the supervision of the foundation engineering and measurement review (the supervision personnel are mainly side station supervision, verification), and finally release all the building axis positioning piles (according to the size of the building can also be laid out at the axis interval), all axis positioning piles are based on the planning department's positioning piles (at least 4) and the construction plan of the bottom floor of the building for pay-off. 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.

Third, the main construction line, after the foundation engineering construction out of plus or minus zero, followed by the main body of the first floor, the second floor. 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.

The pay-off of the building is to facilitate the work of the workers, and it is also to be able to carry out the preliminary positioning work of the construction in strict accordance with the design drawings. Generally speaking, all building axes can be called large lines, and the corresponding small lines are the edge lines and dimension lines of structural components. The main idea of pay-off is to move the size of the design drawings to the ground according to the size shown in the drawing, and whether the size of the whole project is constructed according to the size of the design drawings depends on the pay-off.

There is also a pay-off for all the construction to have a size basis, reinforcing steel workers to bind steel bars to the line as the basis, to find the right position, carpentry formwork should also be based on the line, bricklayer wall should also be based on the line.

The main thing is to move the size of the drawing to the ground, and whether the size of the actual project is in accordance with the size of the drawing is to see the pay-off.

This is the baffle used when pouring cement. Cement is soft when it is not cured and requires a profile or baffle to be shaped. This kind of plate is used for shaping.

After the projection and measurement point of the main axis is set, 200 200 holes must be left at the projection point of each floor slab as the projection channel (the point is based on the middle of the channel). The hanging wire method is used to lead the axis to each floor. The main structure is under construction.

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