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In every road maintenance project implementation there are always unpredictable risks affecting the quality of the project performance. This study aims to obtain the most dominant risks affecting the quality performance of road maintenance projects in Malang Regency using Analysis Hierarchy Process (AHP) method and Multiple Linear Regression. The AHP method was chosen to observe the highest level of the risk, while the Multiple Linear Regression method was selected to find risk events which have significant effect upon the quality degradation of the project. The results showed that the risk of material specification insufficiency reaches the highest risk level with risk factor value of 0.584, while the risking events caused by materials and human resources insufficiency is the most significant influences affecting the quality degradation of the project performance.

In Indonesia generally use conventional flexible pavement, where the ability to pass water is not good. One prevention effort is using porous flexible pavement. To determine the effect of stress, strain, and deformation on porous and conventional pavement, a semi-field pavement study was conducted and focused on improving track performance. Semi-field scale is an analytical method that using a certain scale that can represent the actual conditions that occur in the field, both on the load, material, and thickness. From the measurement results, the value of stress and strain increased along with the increasing number of tracks. Meanwhile, the deformation on the surface of the asphalt due to the passing wheel load increases as the number of tracks increases.

Performance of a building construction will decrease with increase life service of the structure. To maintain the performance building in order to remain functioning properly it is necessary to repair the damaged building components. The purpose of this study is to get an assessment the physical condition of the building and analyze damage level of school structure in Blitar City, and get the order to maintenance of elementary school structures in Blitar City. Weight of structure criteria assessed by the building expert and analyzed with Analytical Hierarchy Process (AHP) method, then the result of the weight is multiplied by the physical condition index obtained from the observation. Assessment of physical condition index of elementary school structure in Blitar city is 69.34%, it can be interpreted that the structure is in deterioration or damage but does not affect the overall structure of the building.

Acceleration of national development increases the number of construction projects in Indonesia, including road projects. The contractor as the service provider in the implementation of the construction work shall have a detailed implementation schedule and project cost budget plan so that the construction work shall not be subject to delays and cost overrun. The main thing that can cause cost overrun is the error in cost estimation. In this study discusses the modeling of increasing the accuracy of cost estimation as well as the development of factors that can improve the accuracy of cost estimation. Validation of research variables was done to experts using Analytical Hierarchy Process (AHP) method and modeling using Structural Equation ModelingPartial Least Square (SEM-PLS) method to project contractor of Public Works Department of Central Kalimantan Province and National Road Implementation Center XI Unit Work of Central Kalimantan with contract value of project worth 20 Billion to 50 Billion Rupiah Year 2016. The result of variable validation shows the competence variable of estimator, survey, availability of information, calculation of cost estimation and internal company is variable which influence estimation The obtained modeling equation is AEB = 0,129 KE + 0.466 S + 0,191 KI + 0,153 PEB + 0,069 IP + 0,181 ζ. The development of cost estimation is done by improving each influential indicator in each variable and applying development strategies to increase the estimated cost estimation based on SWOT analysis. Keywords : Analytical Hierarchy Process (AHP), cost estimation, road, Structural Equation Modeling-Partial Least Square (SEM-PLS), SWOT analysis.