Ngijo Village is a village in the Tasikmadu sub-district, Karanganyar Regency, Central Java. If seen from its location in Ngijo Village, most of the area has drainage channels that are still open. This makes the road conditions in Ngijo Village relatively narrow because the open drainage channels reduce the area of the road. As a result, it will disrupt the mobility of community activities and be dangerous when it rains due to rising water levels in the drainage canals.To overcome the problems in Ngijo Village, the researchers aim to make a canal cover deck. The drain cover deckers are made of eco-friendly concrete. Eco-friendly concrete is concrete composed of materials that do not damage the environment with added materials utilizing mask waste and plastic bottle waste. The method used in this community service is the preparation stage for the location of Ngijo village, the implementation stage by conducting direct socialization to the community about how to make deckers from eco-friendly concrete and the evaluation stage for the procurement of canal deckers. The results of this activity show that after the construction of deckers and the application of drainage channels it has a positive impact. The positive impact for the road in Ngijo Village is to be wider because it is not obstructed by the drainage channels which were originally open and the drainage channels are still functioning properly and will increase the mobility of community activities. applied to other products that can provide benefits to the environment. Another benefit is that the community is given insight that will add to their understanding and opinions which will create business opportunities in Ngijo Village.

Eco-friendly concrete uses less waste material which has less negative impact on the environment. This research utilizes PET plastic bottles and masks as a substitute for aggregate in concrete. The aim is to find out whether the compressive strength of eco-friendly concrete meets the requirements of structural concrete. The method used is planning mix design on seven samples, one sample of normal concrete and six samples of concrete with replacement of aggregate composition. Samples with aggregate replacement were designed from variations of 0.1%, 0.2% and 0.3% by weight of cement and PET plastic bottles with composition variations of 5% and 10% of coarse aggregate. The test results of the average compressive strength of concrete for 28 days are 235 KN/m2 for normal concrete; 117 KN/m2, 85 KN/m2; 149 KN/m2; 64 KN/m2, 42 KN/m2 and 21 KN/m2. The highest average compressive strength was obtained at 149 KN/m2 but did not reach the design compressive strength of 235 KN/m2. It can be concluded that the use of substitute aggregates from PET plastic bottles and masks did not get concrete results that match the compressive strength of the plan, but the concrete still meets the requirements for the compressive strength of low-strength structural concrete.

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<p>Geographic Information Systems (GIS) have become very interesting and provide hope and the development of information and communication technology. One of the efforts to support the management of PBB geospatial data is by developing a Spatial Data Infrastructure (IDS). To determine the quality of geospatial data used in PBB management and the condition and readiness of IDS for PBB. A GIS-based computer program was used it. This study aims to determine the quality of geospatial data used to manage PBB in Gajahan Village, Colomadu District, Karngayar Regency. We collected data using observation and documentation techniques and data analysis of the PBB Block Map using the Arcgis software. The results showed that the position was less accurate in terms of geospatial data quality and the geometric shape had similarities. Also, the digitized results of the PBB block map can be used to support policymaking in local governments. However, the results of interviews with village officials were that they could only read old maps and could not update new data.</p>