Pull Out Test

Anchor bolt pullout/Shear tests

Several types and different configurations of anchor bolts were tested for pullout and shear. First of all, M24 and M27 bolts used to support 3 advertisement boards with dimension of 12 m long and 5.65 m height each were tested under both pullout and shear.

Chemical anchor pull out testing

RE conducted the Chemical Anchor Pull Out Test. This chemical anchor was installed on the floor as moment-resisting support of the new column. Thus, this chemical anchor must be able to resist tension force according to the design. In this case, proof load according to the design was applied. Test frames, load cells, displacement transducers, and the data acquisition system were used.

Pull-off test

The Concrete Pull-Off Test is used to determine the direct tensile strength of a concrete or the bond strength of concrete mixture. The testing equipment consists of metal test circular plates, threaded rods, epoxy, a core drill, a load cell, a displacement transducer, and a hydraulic jack.

Anchor bolt pullout/Shear tests

Several types and different configurations of anchor bolts were tested for pullout and shear. First of all, M24 and M27 bolts used to support 3 advertisement boards with dimension of 12 m long and 5.65 m height each were tested under both pullout and shear.

Chemical anchor pull out testing

RE conducted the Chemical Anchor Pull Out Test. This chemical anchor was installed on the floor as moment-resisting support of the new column. Thus, this chemical anchor must be able to resist tension force according to the design. In this case, proof load according to the design was applied. Test frames, load cells, displacement transducers, and the data acquisition system were used.

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Static Load Testing

The Pull Out Test and The Shear Load Test on Anchor Bolts

The Pull Out Test is one of the methods used to inspect an anchor’s load carrying capacity. This test determines the tensile strength capacity. The tested load will be applied in the parallel direction to the anchor using a hydraulic pump with a load measuring system. Displacement of the tested anchor is measured by a displacement transducer which shows real-time data. The Pull Out Test conducted by RE complies with the ASTM E488-10 standard.

Load testing and Analysis of 3000-ton wheat silo

Determination of silo load path, load distribution and new parameters for design and construction of new silos

Factory floor load test for heavy warehouse use

A factory floor was first investigated to verify whether the floor slab is on pile or on ground. Then the load test was conducted to justify the load carrying capacity. Oil barrels were used as load application and placed on the test are by forklifts. Load magnitude per agreement was taken to be equivalent […]

Precast slab load test

RE Team performed the Precast Slab Load Testing to monitor the structural condition of a school in Phuket.

Structural assessment and load test of a RC roof top

RE conducted the Structural Assessment (including rebound hammer and Ferroscan) and the Load Carrying Capacity Test on the roof top of a 4-story hospital in the Ubonratchathani province, Thailand.

Hotel Floor Load Test

RE was requested to conduct floor load testing in hotel at Chon buri province, Thailand to determine the actual load carrying capacity compared to that specified in the original design.

Post tensioning Slab Load Testing

A building under construction experienced cracks on its post-tensioned slab. The structural capacity was questionable for a designed live load of 400 kg/m2 and a super imposed dead load of 250 kg/m2. Thus, a load test was conducted to determine the actual floor capacity.

Slab on ground Load Testing

RE conducted a load test on a ground slab in a factory on Suksawat road, Samut Prakan. In the design point of view, a ground slab is normally designed using the linear spring distribution support assumption. However, in reality, a ground slab often experiences nonlinear behavior. The slab on ground load test project was deemed necessary when there was a plan for new production line machines to be installed.

Steel roof structure load testing

The roof structure of a meeting room was insufficient for a new ceiling load requirement according to the FEM analysis. Thus, strengthening solution was provided, and a load test was carried out to verify the safety of the structure as this is a very important meeting room of an international organization.

Factory floor load testing for new heavy machine installation

RE team conducted a load test in a factory in the Bangpa-In Industrial Estate. The factory planned to install new heavy machines, and they are required to check the floor capacity prior to the installation.

Steel Roof truss load test

Structural renovation has become more and more common in recent years. Due to the high concentration in urban areas, most land has already been occupied by existing structures which later on may be renovated for different uses.  However, due to deterioration over time or lack of maintenance, many existing structures may not be in a good condition for renovation which can then raise safety concerns. Thus, a load test is deemed necessary.

RC Floor and Beam load test

RC Floor and Beam load test in new factory

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Sensitive Machine Vibration Measurement and Vibration Isolation Problem

A 6-ton MRI Scanning machine was planned to place on the 1st floor of a Tower. To fulfill the specifications of the MRI installation, the existing vibration condition of the floor had been checked since vibration on floor will lead to the distorted images and affect the image quality from scanning. RE conducted the floor vibration measurement and the vibration results showed that the vibration of the 1st floor exceeded the allowable vibration specification for the MRI “sitting” requirement. The vibration was found from the operation of the high capacity of the pump and chiller system located in the 4th floor of the tower resulting an excessive vibration on the 1st floor. Thus, solution was designed and provided by RE to isolate the vibration from floor to the MRI machine. A mock-up test was also done to check the design and a simulation test using 6 ton load steel blocks to replicate the MRI machine was placed on exact location that the MRI machine will be installed and the vibration on both floor and on isolation system were measured, the results showed that the isolation system worked effectively, the vibration from floor was totally isolated, a very small vibration was observed on the isolation system and it passed the specification provided for MRI installation. Thereafter, the MRI machine was moved in and placed on.

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Microelectronics fabrication facilities vibration measurement

Microelectronics Fabrication Facilities Vibration Measurement

Two 2 buildings consisting of a 5-story building and a 2-story building were installed with sensitive machines, which fabricate the microelectronics components such as external hard drives. Those require a free-vibration condition. Thus, 70 locations of machine vibration were measured. In each location, vibration in all three axes including two horizontal directions (X, Y) and one vertical direction (Z) were measured. Vibration was then interpreted into Vibration Criteria Curves (VCCs) defined as the relationship between One-Third Octave band Frequency and Root mean square velocity (RMS_V). This is known as a basic for designing and evaluating the performance of microelectronics fabrication facilities. Thereafter, these results were used for the machine “sitting” specification.

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