Concrete is one of the materials that is widely used in various structural works because it has advantages, especially it has high compressive strength and is easy to form. However, concrete can also be damaged by physical, chemical, mechanical and excessive loads. Damaged concrete structures must be repaired and strengthened immediately to prevent further damage that can lead to structural failure. One of the materials that can be used for structural reinforcement is Fiber Reinforced Polymer (FRP). FRP is a composite material made of three basic components, namely fiber, polymer and additives. FRP has advantages such as having high strength, light weight, corrosion resistance, easy installation, requiring little or no scaffolding. FRP is very well used to increase the capacity of structures in buildings that are undergoing changes in function

Building Engineering Education Study Program is part of the Faculty of Teacher Training and Education (FKIP) of Palangka Raya University which has facilities and infrastructure to support teaching and learning activities. There are several problems faced by partners, especially clean water installations. The clean water installation consists of a toren (water reservoir) and a pipe network. The water pressure that comes out through the faucet is relatively small. This problem is very important to be resolved because the availability and smooth running of water is an absolute necessity during the COVID-19 pandemic. To prevent and break the chain of the spread of COVID-19, it is necessary to apply health protocols properly, one way is to wash hands frequently, which of course requires the availability of water. The solution offered to overcome this problem is to add an air pipe (ventilation). The addition of an air pipe can increase the flow of water. The increase in water discharge at point 1 is 25.93%, at point 2 is 1.98%.

The material of composing an equivalent force became the focus of this study. Researcher want to see deeper and broader understanding of students related to this material. One teacher's information that most students make mistakes in solving the problem in the form of a description on the subject of engineering mechanics. The purpose of this study is to describe the mistakes made by students in completing the description of the material in composing an equivalent force in the thenth grade of Construction and Property SMK Negeri 1 Palangka Raya. This research uses descriptive method with qualitative approach. Population in this research is thenth grade of Business of Construction and Property of SMK Negeri 1 Palangka Raya is 23 people. Sampling by purposive sampling so chosen 4 subject of students with criterion of student can represent every aspect in making mistake that is mistake in comprehension problem, make mathematical model, calculation and draw conclusion, and able to communicate well. Data collection was done by test and interview method. From the research obtained the average result of the percentage of students who make mistakes in the aspects of understanding the problem of 5.44%, the error occurs because students do not write a complete what is known and asked in the matter. For the aspect of making a mathematical model of 21.74%, though students can write what is known and asked from the test questions but students are not able to change what is known into the mathematical model. For the calculation aspect of 35.87%, the error occurs due to wrong students in addition and calculation in the form of the root so that the results obtained are not appropriate. Students do not include a unit symbol into the calculation process. For Aspects to draw conclusions of 90.2%, errors occur because students do not write conclusions and students do not return answers into context questions, this can be seen from the answers of students who are less precise.

Palm shells are one of the wastes produced from the processing of crude palm oil in addition to empty fruit bunches and coir which account for 60% of oil production. Palm oil shell waste is widely used as active charcoal in the oil, rubber, sugar, and pharmaceutical industries. The potential of palm oil shell waste in Indonesia is very large considering the area of oil palm plantations which continues to increase every year. This study aims to determine the percentage of the addition of palm oil shell waste in the manufacture of paving blocks that provide optimum compressive strength and water absorption values from several variations of the addition of palm oil shell waste that replaces some of the fine aggregates. The study was carried out experimentally in a laboratory using a boxed specimen with a length of 20 cm, a width of 10 cm, a height of 6 cm by 40 pieces. The mixture uses a ratio of 1 cement and 5 sand with fas 0.3. Treatment of test specimens by immersion in water for further testing of compressive strength and absorption at the age of 28 days. Based on testing of the compressive strength of paving blocks with a percentage of 0%, 5%, 10%, 15% are respectively 8.08 MPa, 7.18 MPa, 6.46 MPa, 5.94 MPa. The value of paving block water absorption with a percentage of 0%, 5%, 10%, 15% are respectively 9.88%, 10.25%, 12.27%, 12.44%.

This study aims to determine student learning outcomes and student responses using the Google classroom-based Blended Learning method. This research is a descriptive study with a quantitative approach. The research sample was 26 students of class XII KGSP SMK N 1 Palangka Raya academic year 2019/2020. The research instrument was a learning outcome test and a questionnaire. The learning outcome test is in the form of multiple-choice consisting of a pre-test and a post-test. The results showed that classical completeness at the pre-test was 3.85%, and after applying the Blended Learning Model (post-test), classical completeness was 100%. Student response to the use of Google Classroom was 76.27% which is categorized as a very strong response.