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This research was conducted in PT Sardana Indah Berlian Motor Medan. The purpose of this study was to examine and analyze the effect of product quality, service quality and price on purchasing decisions for Mitsubishi cars in PT Sardana Indah Berlian Motor Medan. The decision to buy Mitsubishi cars has decreased. This research method uses quantitative methods. The population in this study amounted to 1376 customers and the sample amounted to 93 customers. The sampling technique of this research is simple random sampling. Testing the hypothesis partially obtained the value of tcount -0.710 0.05, meaning that H0 is accepted and Ha is rejected, namely partially Product Quality has no significant effect on purchasing decisions for Mitsubishi cars in PT. Sardana Indah Berlian Motor Medan. Testing the hypothesis partially obtained the value of tcount -0.062 < 1.987 and the significance obtained is 0.951 > 0.05, meaning that H0 is accepted and Ha is rejected, namely partially Service Quality has no significant effect on purchasing decisions for Mitsubishi cars in PT. Sardana Indah Berlian Motor Medan. Testing the hypothesis partially obtained the value of tcount -0.91 0.05, meaning that H0 is accepted and Ha is rejected that is partially the price has no significant effect on purchasing decisions for Mitsubishi cars in PT. Sardana Indah Berlian Motor Medan. The results of the simultaneous test are Fcount = 0.168 < Ftable 2.71 and the significance probability is 0.918 > 0.05. It can be concluded that H0 is accepted and Ha is rejected, namely simultaneously Product Quality, Service Quality and Price have no significant effect on the Mitsubishi Car Purchase Decision variable in PT. Sardana Indah Berlian Motor Medan.

Concrete test materials received in the field were treated and tested at the age of 28 (twenty eight) days, regulated in the Indonesian National Standard for concrete with the standard number SNI 2847: 2013. In addition, the equally important standard to be observed in concrete testing, especially in construction, is the observation of the shape of the collapse of the test object, which was written in the SNI 1974: 2011 concrete regulation. This collapse model needs to be considered because it can pay attention to the possibility of errors in testing. The test object used in this study was formed using Self Compacting Concrete type concrete. This type of concrete is an innovative concrete that does not require vibration for compaction. Because this concrete can flow by itself and actually fill the formwork until it reaches full compaction. These concrete collapse models must be considered because they are very interesting to see. Researchers conducted experiments on concrete collapse models made using several variations of concrete mixtures, ranging from variations in water content (standard, -5%, -10%, + 5%, + 10%), height variation of the test object (15 cm , 12.5 cm, 10 cm, 8.5 cm, 7.5 cm), and variation in age of the plan. From the research conducted by researchers, the number of specimens carried out shows the pattern of collapse of the crack model parallel to the upright axis, then there is the model of cone and shear failure and the least is the cone and split failure model.

Outrigger systems are an effective structural scheme that is commonly used in high-rise construction to increase stiffness and distribute the moment demand within the core to the exterior columns. Despite the on-going use of outrigger structural systems around the world, a formal seismic design procedure for outrigger system is missing. This thesis presents an equivalent energy-based design procedure (EEDP) to design outrigger systems for seismic applications. Using the concept of an energy balance, elastic single-degree of freedom systems are equated to equivalent nonlinear systems, and plastic mechanisms are used to derive design forces for the outrigger systems. EEDP allows engineers to design the outrigger-wall buildings to achieve different performance objectives at different seismic hazard levels, which is desirable for creating earthquake-resilient buildings. Three prototype outrigger-wall buildings of various heights were designed using the proposed procedure for a hypothetical site in Vancouver, Canada. Detailed finite element models were developed using OpenSees to assess the seismic performance of the prototype buildings. The results of the nonlinear time history analyses show that the prototypes can meet the performance objectives specified during the design procedure. Lastly, incremental dynamic analyses were conducted using the FEMA P695 methodology to quantify the seismic safety of outrigger systems designed using EEDP. The results show that the proposed EEDP is an effective method to design outrigger systems, where the structure can achieve sufficient margin of safety against collapse and satisfy multiple performance objectives at different hazard levels without iteration.