TECHNICAL GUIDE TO HOUSE FOUNDATION CONSTRUCTION

1. What is the house foundation?

Foundation angle is a term in the construction industry, used to refer to the process of determining the positioning of the corners of the house to be suitable and meet technical standards, ensuring a square foundation, contributing to improving the quality of the foundation for the project by technical solutions on machinery or manual work...

If the foundation angle is not performed, the house may be distorted, affecting the aesthetics, making the subsequent flooring and wall tiling work difficult, or when installing beds, shelves, etc., it cannot be placed squarely, close to the wall. Even more seriously, it can lead to safety risks during the construction process. Therefore, as a worker working in the construction industry, you need to have a firm grasp of the knowledge and techniques related to foundation angle.

Note when angled foundation: We should choose the most square corner of the house for a house with an unattractive plot of land to be the starting corner of the foundation angle.

2. Instructions on how to properly level a house foundation

To perform nailing, you can choose one of two methods: manual nailing (applicable to small and medium-sized projects) and machine nailing (for large projects):

Step 1: Preparation work before building the house foundation

• Red painted iron stakes: 04 sections (about 50cm long)
• Workers: 03 workers
• Metric ruler: 01 piece
• Parachute cord or fishing line: 01 roll
• 1 hammer.

Step 2: Technical operations of house foundation

• Suppose point D is the corner of the plot and this corner is the most right angle. You want the corner of your house to be 925 and 665mm away from the corner of the plot in the x and y directions, respectively. We can easily determine that point A is the corner of the house (figure).

• From point A, use a hammer to hammer a red painted iron stake. Use a rope to tie the top of the stake, rotate 2 circular arcs: One 4m arc and one 3m arc.
• Determine point C by the 4m circular arc (AC = 4m) and C is 665mm from the edge of the fence.
• Drive another iron stake at point C, tie the rope to the top of the stake, rotate a circular arc with a radius of 5m. The intersection between circular arc C with a radius of 5m (C; 5m) and circular arc A with a radius of 3m (A; 3m) is point B. At this time, ensure that AC = 4m, AB = 3m, BC = 5m. According to the Pythagorean theorem, we ensure that triangle ABC is right-angled at A.
• According to the directions of sides AB, AC, we can determine the axes of the house.

Note: While determining the angle, carefully check the angles and after completing the axis determination, we check the overall construction: The dimensions of the 2 axes are correctly determined in the drawing and the dimensions of the 2 diagonals must be equal to ensure that your house is always square.

Determine the foundation center and column center

• After determining the axes, we determine the foundation and the center of the foundation.
• Use lime as a tool to draw the size of the excavated soil.
• After digging the soil, drop a plumb line to determine the center of the foundation.
• Pour concrete lining the foundation.
• Check the center of the foundation to determine the center of the column.
• Place the foundation steel and column steel to coincide with the determined center.
• Pour concrete foundation.
• Continue with the next steps to complete the project.

3. How to cut nails by machine

Manual foundation leveling method can only be applied to small-scale projects. To complete foundation leveling of large projects, you need the support of specialized surveying equipment such as laser levelers or levelers.

Currently on the market, there are many types of levelers and levelers with diverse designs, functions, and prices from many different brands for you to choose from, typically including: Bosch laser levelers, levelers/balancers from Leica, Laisai, Pentax,... Depending on the job requirements and scale of the project, you can consider choosing the right type.

The process of mechanical foundation leveling will be carried out as follows:

Step 1: The contractor receives the construction site and design documents from the investor

Step 2: Measure the dimensions through the transfer mark and secondary mark

Step 3: Use the transfer and surveying equipment to locate the axis more accurately. Normally, these points must be 5 - 10m away from the axis so as not to be affected during the excavation and transportation of materials

Step 4: When excavating, only perform preliminary foundation leveling by spreading lime for the excavator. After pouring the concrete base, use the machine to reposition it for sure.

3. Consequences of incorrect house foundation techniques

The house foundation angle plays a very important role, just a little mistake in the process of angled foundation will lead to your house no longer being square and will be distorted into a parallelogram or other shapes... At that time, its consequences are extremely large. Everything in the house cannot be normal as before: From floor tiles, bathroom tiles must be cut diagonally, to beds, shelves, cabinets... cannot be placed squarely against the wall. The error of angled foundation will lead to consequences that will follow you throughout your life. Therefore, angled foundation is an extremely important step, this step must be done correctly!

Above is the concept of what is angled foundation and the popular ways of angled foundation that you can apply to your work. If you find it useful, don't forget to share it with everyone!

4. Introducing a reputable design & construction consulting service provider

The importance of construction units is undeniable, their reputation will ensure the quality and aesthetics of your project. Currently, there are many units providing design and construction services to meet the increasing construction needs in our country. Therefore, finding a reputable unit is not easy and requires you to spend time researching. In the selection process, you need to research carefully and ensure that the accompanying unit must have high expertise, many years of experience, have a clearly signed contract, transparent costs, ... To help customers save time searching,Hung Nghiep Phu Construction Investment Co., Ltd. is confident that it will be the best choice for you.

Hung Nghiep Phu Construction Investment Co., Ltd. with the mission of providing the best solutions and services, building a prosperous community with customers, Hung Nghiep Phu is gradually affirming its brand through sincere cooperation, with a leadership team with ethical capacity, creativity, high expertise and strategic vision. Hung Nghiep Phu owns a team of skilled, highly qualified employees who will bring customers the best quality technology.

Hung Nghiep Phu Construction Investment Co., Ltd. - specializes in constructing civil and industrial works. We look forward to accompanying customers in construction projects as well as continuous procedures such as planning diagrams, applying for construction permits, completing procedures, applying for fire prevention and fighting certificates, ... If you have any questions or are in need of design, completing procedures, please contact us immediately for free consultation!

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Source: Compiled from the Internet