Abstract. Pervious concrete was introduced in America in 2003, popularized by Dan Brown and used as a rigid pavement in the open parking lot. Rigid pavement using pervious concrete can absorb water in the surface to go straight through the concrete to the ground below.This water flow is one of the benefit of using the pervious concrete. Using of wastes such as broken roof and ceramics tiles are not commonly used in Indonesia. Utilization these kind of wastes is predicted lower the compressive strength of pervious concrete as they are used as a substitute for coarse aggregate.In this research, pervious concrete is made using a mixture of the fragment of ceramics and roof tiles.This research using broken ceramics and roof tiles with a grain size that loose from 38 mm sieve, retained on 19 mm sieve and the coarse aggregate from crushed stone that loose 12.5 mm sieve, retained on 9.5 mm sieve. The water cement ratio is 0.3 and to assist the mixing process, the addition of addictive in pervious concrete is used.The size of coarse aggregate used in the mixture affects the strength of pervious concrete. The larger the size of aggregate, the obtained compressive strength becomes smaller. It also affects the density of pervious concrete. The using of mixture of ceramics and roof tiles only reduce 2 MPa of pervious concrete compressive strength so this mixture can be used as a substitute for coarse aggregate with a maximum portion of 30 %. The high porosity of the specimens causes the reduction of pervious concrete density that affect the compressive strength. This high level of porosity can be seen from the high level of water absorption that exceed the required limit of water infiltration.

Delivery performance is one of the indications of enterprise’s success to provide products to customers. In this research, simulation is done to measure the delivery performance and all the processes included in delivery process. In fact, every process has their own risks could delay delivery process that the delivery performance is reduced. The methods used to identify the risks and the causes are Failure Mode and Effects Analysis (FMEA) and Fault Tree Analysis (FTA). Risks analysis is done with the help of Pareto diagrams and scatter plot to determine the risks need to be corrected immediately. The proposed improvements are integrating the systems in form of e-cargo ready and implementing bar-coding. After the proposed e-cargo ready applied and being simulated, the delivery performance in terms of average total time reduced by 29,398%.

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The pipe instalation of offshore EPC project has high risk of cost overruns due to the uncertainty of weather, human errors, pipe fabriction process, etc. All of those risks will cause the project delay. The optimiziation of risk based project scheduling can reduce the risks. Risk management can be optimized with combining some methods, such as Failure Mode and Effect Analysis (FMEA), Fault Tree Analysis (FTA), Critical Path Method (CPM) and Crashing Project method. The combination of these methods are used to do the data analysis in order to reduce the project total duration. Based on analysis using FMEA, FTA, CPM and crashing project method, the total of project duration can be reduced from 499 days to 489 days with Rp. 6.822.472,- as the additional cost of workers.

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