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.
The Steel Tensile Test is used to determine yield strength, ultimate strength, and fracture strength of existing steel members. In the testing process, samples are taken from the steel members in structures such as factory roof trusses or parking roof trusses. The results of the Steel Tensile Test will be used in further analyses and evaluations of the structures.
One very common problem is that the drawing or evidence of the floor pile layout or location is missing. As a result, a thorough floor capacity analysis cannot be done. Load carrying capacity also cannot be verified. When dealing with one of these cases, RE team conducted the Non-Destructive Pile Detection on the concrete floor of a factory in the Bangpa-In Industrial Estate.
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.
Large machine operations can cause vibration to the supporting platforms as well as the sheltering structures. Vibration is measured, and evaluation is made accordingly. In an example case of this, undertaken by RE, when the machines in the premises started operating, strong vibration was observed in the sheltering structure, and large deformation was visualized in long-slender steel columns. The reason was found to be an accidentally matching between machine vibration frequency and 1st natural frequency of the columns. Resonance therefore occurred.
A 4-point bend test was conducted on five patterns of metal sheets (totalling 30 samples). The testing equipment has been developed to test a specimen with a wide surface area with the maximum load carrying capacity of 3 tons. The proof load and the maximum load were recorded and converted into uniformly distributed load. Also, the relationship between the load and the deflection was reported in the test results.
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.