How much area is a point for the bearing capacity of the foundation to be detected

Natural foundation bearing capacity.

The number of tests is not less than 3 points; The number of sampling tests for the bearing capacity of composite foundations is the total number of piles, and not less than 3 points, and the number of detection points should be increased for important buildings.

1. Detect the bearing capacity of the foundation by doing the foundation soil load test;

Second, the foundation soil load test steps:

The foundation soil load test is used to determine the bearing capacity and deformation characteristics of rock and soil, including: load test; On-site immersion load experiment; loess collapsible experiment; Expansive soil.

On-site immersion load test, etc.

Test content: natural foundation bearing capacity, the number of tests is not less than 3 points; The number of sampling tests for the bearing capacity of composite foundations is the total number of piles, and not less than 3 points, and the number of detection points should be increased for important buildings. CFG piles.

Plain concrete piles should be tested for integrity.

The immediate load-bearing capacity test is the force that one square meter is subjected to.

Article 1, Article 1 of the Construction Quality Acceptance Standard for Building Foundation Engineering (GB 50202-2018).

"Code for Acceptance of Construction Quality of Construction of Construction Foundations of Construction Projects" GB5020-2002 There are specified inspection quantities, and each unit of project shall not be less than 3 points; There should be at least 1 point for every 100 square meters above 1000 square meters, and at least 1 point for every 300 square meters above 3000 square meters. There is at least 1 point under each independent foundation, and the foundation groove should have 1 point after each level of loading every 20 extension meters, according to the interval min, and then every other reading of the settlement, when continuous 2h, the settlement amount of each h is less than, then it is considered that it has been stabilized, and the next level of load can be added.

The number of points is 1% of the total number of piles, and the unit project is not less than 3 points.

9. Stress shovel test: suitable for determining soft plastic flow plastic saturated cohesive soil. 10. Flat plate side expansion test: suitable for soft soil, general saturated cohesive soil, loose medium dense saturated sand soil and silt soil. Geotechnical tests.

The testing of the bearing capacity of the foundation should generally be the man-site foundation that has been manually reinforced. Natural foundations, which have already been done by the exploration department, do not need to be done.

Generally speaking, all foundations should be tested for bearing capacity.

For example: probing, standardization, static load, dynamic testing and other inspections.

The foundation bearing capacity test is required by the design drawings, and the foundation bearing capacity test is generally required for high-rise buildings.

The bearing capacity of the natural foundation shall not be less than 3 points; The number of sampling tests for the bearing capacity of composite foundations is the total number of piles, and not less than 3 points, and the number of detection points should be increased for important buildings.

1. Detect the bearing capacity of the foundation by doing the foundation soil load test;

Second, the foundation soil load test steps:

The foundation soil load test is used to determine the bearing capacity and deformation characteristics of rock and soil, including: load test; Immersion load test of the current rubber demolition site; loess collapsible experiment; Expansive soil on-site immersion load experiment, etc.

The test content is frank: the bearing capacity of the natural foundation, the number of tests is not less than 3 points; The number of sampling tests for the bearing capacity of composite foundation is the total number of piles, and there are no less than 3 points to bend, and the number of detection points should be increased for important buildings. CFG piles and plain concrete piles should be integrity tested.