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NG28 provides a single pile horizontal static load test service related to foundation inspection. The single pile horizontal static load test refers to the level of horizontal thrust applied to the top of the pile and the horizontal displacement of the top over time is observed to determine the corresponding horizontal load of the single pile Force test method.

NG28 provides dynamic penetration testing services related to foundation testing. Dynamic penetration testing is also called cone dynamic penetration testing. It refers to using a certain quality of hammer to drive a certain specification of cone probe into the soil with a certain free fall distance. It is an in-situ test method to determine the nature of the map by the number of hammer strokes required to drive into the soil at a certain depth.

NG28 provides piled vertical static load test services related to foundation inspection. The piled vertical static load test refers to the stepwise application of vertical pressure on the top of the pile to observe the horizontal displacement of the top over time to determine the corresponding unit Test method for vertical compressive bearing capacity of piles.

NG28 provides low-strain detection services for foundation piles related to foundation detection. Low-strain detection of foundation piles uses low-energy transient or stable methods to excite vibration on the top of the pile, and the velocity-time history curve of the top of the pile is measured. Or while the velocity time history curve at the top of the pile is actually measured, the force time history curve at the top of the pile is actually measured. Detection method to judge the integrity of the pile body through time domain analysis or frequency domain analysis of wave theory.

NG28 provides vertical static load test services for anchor piles related to foundation testing. The vertical static load test of anchor piles means that the vertical load is evenly transmitted to the foundation piles of the building, and the piles under different loads are measured by a single pile. After the top settlement, the Q-s curve and the s-lg t auxiliary curve of the static load test are obtained, and then the parameters such as the characteristic value of the vertical compressive bearing capacity of the single pile are calculated according to the curve.

NG28 provides deep well load test services related to foundation testing. In-situ tests that simulate the working conditions of building foundations can be carried out in deep wells. Through a certain size of bearing plate, vertical loads are applied to the rock and soil to observe the rock and soil. The amount of subsidence under various loads is used to study the deformation characteristics of the rock and soil under the load, and to determine the bearing capacity and deformation modulus of the rock and soil.

NG28 provides sound wave transmission method pile integrity services related to building materials and construction engineering. It transmits and receives sound waves between embedded sound measuring tubes, and measures the acoustic parameters such as sound time, frequency and amplitude attenuation of sound waves propagating in the concrete medium. Relative change, the method of detecting the integrity of the pile body.

NG28 provides sound wave transmission method pile integrity inspection services related to building materials and construction engineering. It transmits and receives sound waves between embedded acoustic measuring tubes, and measures acoustic parameters such as sound time, frequency and amplitude attenuation of sound waves propagating in concrete media through actual measurement of sound waves. The relative change of the pile, the method of detecting the integrity of the pile body.

NG28 provides horizontal static load test services related to foundation inspection. Horizontal static load test refers to a test method that determines the corresponding horizontal bearing capacity of a single pile by applying a horizontal thrust on the top of a pile step by step and observing the horizontal displacement of the top over time.

NG28 provides soil nails and anchor rod (cable) pull-out test services related to foundation testing. The anchor solid and the rock-soil layer after being embedded in the rock-soil layer have the bonding strength. The test is to detect the bearing capacity and deformation of the anchor solid Meet design requirements or specification requirements.

NG28 provides composite foundation load test services related to foundation inspection, including single-pile composite foundation load test, multi-pile composite foundation static load test, single-pile composite foundation load test is performed on a composite foundation composed of a single vertical reinforcement and foundation soil Slab load test. The static load test of the multi-pile composite foundation is a plate load test on the composite foundation composed of two or more vertical reinforcements and the foundation soil.