The foundation pay-off and construction process of the self-built house are as follows:
First, the foundation pay-off.
1.According to the information such as the edge, orientation, and elevation of the house, the theodolite is used to put the control line and control point, and the data is reviewed to ensure the accuracy of positioning.
2.According to the control line, the outer wall line of the house is measured and the gantry pile is arranged along the perimeter of the house, which is used to control the position of the house and the sign of the correct pay-off. After the exterior wall line is placed, the design drawing needs to be reviewed for the opening and depth of the line, and the four corners of the line can be closed at 90° to ensure the squareness of the house.
3.According to the exterior wall line and the design blueprint, the excavation line will be released;After the excavation line is completed, the axis pile is laid along the line, and the pile position is required to be reliable and eye-catching, so as to prevent the foundation groove from being unstraight during the mechanical excavation process.
4.Before foundation excavation, according to the width of the foundation groove on the foundation details and the size of the upper slope, the size of the excavation edge line is measured from the central pile to both sides, and the mark is made;Then pull a thin line between the marks at both ends of the foundation groove, sprinkle the edge of the foundation groove with white ash on the ground along the thin line, and excavate according to this gray line during construction.
Second, the foundation construction process.
1.Foundation trench excavation: first carry out the excavator exploration point to confirm the soil condition of the foundation, and require all 4 corners of the house to be explored. After the excavation is not abnormal, the foundation groove is excavated according to the construction drawing, and the old soil layer is excavated, and the trench is required to be straight and in line with the size of the construction drawingIn order to prevent the base from over-excavation, the bottom of the foundation groove should be left with a thickness of 200-300mm when the excavator excavates the soil, which can be manually trimmed.
2.Foundation cushion construction: After the foundation groove excavation is completed, the cushion construction is carried out. After the cushion construction is completed, the foundation axis and beam position line need to pop up on the cushion and be reviewed correctly.
3.Independent foundation reinforcement binding: Reinforcement binding is carried out according to the ejected foundation axis and beam position line. The reinforcement needs to meet the design requirements and be accepted.
4.Foundation formwork support: After the acceptance of the reinforcement, the formwork is supported. The formwork needs to meet the design requirements and ensure that the dimensions are accurate and the support is firm.
5.Foundation concrete pouring: After the formwork is erected, concrete pouring is carried out. In the pouring process, it is necessary to ensure that the concrete is dense and there are no quality problems such as honeycomb surface.
6.Foundation backfill: After the foundation is accepted, the backfill construction is carried out. The backfill needs to be compacted in layers, and the compactness of the backfill needs to meet the requirements.
The above content is for reference only, if necessary, it is recommended to consult professional engineering and technical personnel.