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Solution: According to the axis to borrow the control line (1 meter or 50 line) at the intersection of each floor slab to leave a 150 * 150 hole, when the concrete is poured, use the line cone or plumb meter to guide the axis upward.
The whole process of building 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.
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The best thing to do is to use a total station, which is more accurate.
Another method is to leave the line empty on the first floor slab, and the rectangular plane can generally leave four, and it can be corrected. Use theodolite to align the first floor of a certain axis focus with the first chase to hang up, this method error is larger, now the general high-rise with electronic locator, infrared positioning, all floors are laid off with a point of the foundation, to ensure that there is no cumulative error.
The control point is left on the ground floor or foundation, and the axis focus is one point.
Hope it works for you.
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If possible, you can use a total station, which is more accurate, but the control point should be set far away from the building.
Another method is to use a theodolite for axis external control, that is, to put the instrument on an axis point somewhere outside the building, and then adjust the direction and then cast the point.
Wire hammers are not recommended.
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During the construction of each layer, the axis is bounced to the wall on the wall, and the lead is to use the theodolite to align the line to hit up, and the line is more accurate than the line
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Usually brick and concrete buildings are laid out in this way, if you want to get a little more accurate, then replace it with a larger line pendant.
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It can be measured with a line sinker, and there is no need to leave a line hole on the 6th floor, and pay attention to the 4 points of the line for correction.
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The title has explained that the bottom floor of the stairwell does not need a residential entrance, and the height of each floor is the same, so the staircase section of each floor of the staircase is basically the same, which is relatively simple, and the ground floor, the standard floor, and the top floor have three floor plans.
That's enough. I can give you a regular design of the construction plan, but to list the calculation formula, it will be intercepted by the computer and delete my answer, so I can only give you a detailed size of the construction plan, if you want, immediately draw it for you, otherwise, just as I don't have it!
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The first floor is very unprofessional, and the whole building can be built with one skin? Then you don't have to put the line out...The second floor said that it is projected to the board, how to project? The fact is that the line of the control pile to put the foundation is OK, after the foundation line is placed, mark with red paint on both sides of each corner on the bottom plate (that is, the control line), after building a layer, in addition to the mark to make it vertical, play on the wall with an ink fountain, and then use the drop line to put the control line of the upper layer, so that the layer by layer is put.
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The first layer is horizontally positioned at the corner, the corner bricks are laid first, then the plumb is hung, the horizontal line is pulled, and the bricks are laid one skin at a time.
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Make a hole in the floor slab to make a control point, and cast it with a plumb meter.
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First of all, what is its vertical load-bearing member? If the load is mainly carried by the column to the foundation, and the wall only plays a separating role, this structure is a frame knot; If the floor load is mainly transmitted to the foundation through the wall, the structure is a brick-concrete structure.
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The brick concrete is the strip base, and the frame is the single base under the column, look at the foundation diagram.
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The frame columns of the frame structure are obviously larger than the brick and concrete structural columns! It's also possible that you're talking about the bottom frame structure!
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