PEMILIHAN ALTERNATIF SUMBER AIR BAKU DI KABUPATEN KARO

Clean water is a primary need for humans in every country. The availability of clean water must be guaranteed in time, quantity and quality. The need for water for both domestic and non-domestic needs continues to increase from year to year. To meet the needs of clean water, the people of Karo Regency need clean water sources that are suitable for drinking. Water resources are water discharge and population for water distribution. In finding the amount of water demand, an analysis of the population and analysis of clean water production is carried out. Determining the need for clean water and the population in Karo Regency uses the Geometry method which this method shows the largest population growth so that it can be planned for clean water needs until 2027. Based on the results of the projected population plus the number of water needs in 2027 as many as 491,444 people, the required water discharge is 907,799 l/s while the current production capacity is 14,744.831 l/s, so the additional capacity needed is 0.01003 m3/s. Implementation in the construction of clean water facilities must be adjusted to the level of social, cultural, and economic conditions of the community.

RESPON PERTUMBUHAN, PRODUKSI DAN KADAR FOSFOR DAUN TERHADAP PEMBERIAN DOLOMIT DAN PUPUK NPK PADA KACANG KEDELAI (GLYCINE MAX (L.) MERRIL) PADA TANAH ULTISOL

The objectives of this study was to observe the effect of dolomite and NPK fertilizer application on growth, yield and leaf phosphorus levels of soybeans (Glycine max (L.) Merril) due to the application of dolomite and NPK fertilizers. This research was conducted from June 2019 to December 2019, at the Experimental Station of Agriculture Faculty of University of HKBP Nommensen Medan in Simalingkar B Village, Medan Tuntungan District at an altitude of ±33m above sea level. Soil type Ultisol with Tex-sand 43.75%, Tex-dust 42.18%, Tex-clay 14.07; pH 4.63; cation exchange capacity (CEC) 14.64%, Ptotal 0.10%, N kjehldahl 1.9% K-exch 0.20%, Ca-exch 1.32%, Mg-exch 0.92%. This research was arranged in a factorial randomized block design (RAK) with 2 treatment factors, namely, the first factor was dolomite (D) which consisted of 3 levels, namely: D0 = 0 g/polybag, D1 = 11.2 g/polybag, D2 = 22.4 g/polybag. The second factor was NPK fertilizer (N), which consisted of 4 levels, namely: N0 = 0 g/polybag, N1 = 1.5g/polybag, N2 = 3 g/polybag and N3 = 4.5g/polybag. Parameters observed were plant height, number of leaves, number of pods, number of filled pods, weight of filled pods, dry seed production per plant, dry weight of 100 seeds and leaf phosphorus levels. The results showed that dolomite application had a very significant effect on the number of pods, number of filled pods, weight of filled pods, dry seed production per plant, dry weight of 100 seeds, but had no significant effect on plant height, number of leaves and leaf phosphorus levels. The application of NPK fertilizer had a very significant effect on the number of pods, number of filled pods, dry seed production per plant, dry weight of 100 seeds but had no significant effect on plant height, number of leaves, weight of filled pods and leaf phosphorus content. The interaction of dolomite and NPK fertilizer had no significant effect on all observed parameters.

ANALISA KEBUTUHAN AIR BERSIH DI KOTA MEDAN SUMATERA UTARA

The water that humans really need is good quality water, which is commonly known as clean water. Clean water is one type of water-based resource that is of good quality and is commonly used by humans for consumption or in carrying out their daily activities including sanitation. The most important thing is clean water is a basic human need which greatly affects human health. The stages in completing this Final Project are first to collect the required data from the Central Bureau of Statistics and BAPPEDA Medan City with literature reviews and ask questions directly to related parties about the required data. Then the calculation of the projected population in the city of Medan using the geometric, arithmetic method. The next stage is calculating the need for clean water in Medan City and calculating the maximum daily water needs and peak hours.

ANALISA KONTRAK PROYEK KONSTRUKSI DI INDONESIA

The contract is a very importand document in the project. Contract are seen as laws that must be obeyed, govern and control the rights and obligations between service users and service providers in the project. In world of construction in Indonesia, the standard used for contract documents must be based on Law No.2 of 2017 on construction services as a guide and guidance in constructions activities in Indonesia. In the international world, FIDIC documents has long been recognized, which is a contractual rule that has been used by many countries. FIDIC has also been widely adapted to government and private projects in Indonesia. The first analysis is to identify the contract documents used in several project in North Sumatera region. This analysis shows that the FIDIC red book document is the most suitable document to be used in several project in North Sumatera. The second analysis is comparing the FIDIC document and the analysis shows that the contract document that best matches the points in the questionnaired is Law No. 2 of 2017 on construction services. From the analysis of the previous discussion a conclusion was drawn regarding the philosophy of the work contract discussed was the type of unit price contract based on.

PERSEPSI PEJALAN KAKI TERHADAP TROTOAR DI LAPANGAN MERDEKA KOTA MEDAN

Merdeka Square is one of the icons of Medan City which is continously visited by communities of Medan City or immigrant communities because Medan City is the capital of North Sumatera Province with a high complexity of activities in it. Improvements to the road transportation system facilities, especially sidewalk facilites, are important because the purpose of implementing sidewalks is as a special pedestrian lane with security and safety guarantees against traffic accidents. This study aims to look at people’s perceptions as the main users of sidewalk facilities so that they can encourage people to carry out walking activities as a basic moda of transportation. This research was conducted with a quantitative approach with accidental sampling method, namely primary data is the result of direct interviews in the field to the public using sidewalk facilities at Merdeka Square, Medan City. Based on the result of the analysis conducted on the results of the interview, it was found that the community as users of the sidewalks were not satisfied with the existing sidewalks facilities. So this study aims to provide input in order to improve sidewalk facilities that provide comfort and safety values for pedestrians in order to encourage and increase the number of pedestrians, especially at Merdeka Square, Medan City.

TINGKAT PENERAPAN KESELAMATAN, KESEHATAN KERJA DAN LINGKUNGAN (K3L) PADA PROYEK KONSTRUKSI

Increased development in various regions in Indonesia, especially in the city of Medan, makes many contactors compete with each other in implementing a project. Starting from the time, quality, and cost. However, there are still many contractors who ignore Occupational Safety, Health and Environment (K3L). This study aims to determine the level of application of Occupational Safety, Health and Environment (K3L) in construction projects. Occupational Health, Safety and Environment (K3L) is a program that aims to create a safe, healthy workplace. So that it can reduce the risk of work accidents and occupational diseases as low as possible on the project. The theory used in this study uses quantitative methods that tend to produce descriptive results. The sampling technique was carried out by observation and questionnaire. The instrument used comes from the Minister of Public Works Regulation No. 9 of 2008. This research was conducted on the Cinema Grand Jati Junction construction project located on Jln Perintis Kemerdekaan, Medan The results of the research on the level of application of Occupational Safety, Health, and Environment (K3L) for the Cinema Grand Jati Junction construction project on Jln Perintis Kemerdekaan, Medan amounted to 90.54%. The completeness of K3L facilities in the project was 86.7%.

BETON BERMUTU DAN RAMAH LINGKUNGAN DENGAN MEMANFAATKAN LIMBAH ABU BAN BEKAS

The need for housing is increasing day by day. This is a factor in the visit to the need for concrete as a housing construction material. The more concrete that is produced, the more cement is needed for the construction. Concrete is a composite material (mixture) of several materials, the main ingredient of which consists of a mixture of cement, fine aggregate, coarse aggregate and water. Utilization of waste tire ash in the concrete mix is one of the alternative uses so that ic can ultimately increase the efficiency of cement savings which takes a long time to increase in high prices. With reference to this, this study uses used waste as a cement additive with a mixture composition of 0%, 3%, 6% and 9%. The test specimens were made using a cylinder with a diameter of 15 cm and a height of 40 cm with 48 specimens produced. The results of the compressive strength test of normal concrete (25.45 MPa), while the concrete with a mixture of 3% used tire ash (28.15 MPa), 6% used tire ash mixture (23.46 MPa) and 9% used tire ash mixture (18.60 MPa). From this research, it can be said that compressive strength of concrete using 3% ash produces the greatest compressive strength of 28.15 MPa.

EVALUASI PERKERASAN JALAN KAKU (RIGID PAVEMENT) PADA JALAN SM RAJA MEDAN DENGAN METODE BINA MARGA

axle vehicles with the aim of shortening the distance and travel time from one place to another, as well as an infrastruture that is needed to support development. The design of the Sisingamangaraja – Lubuk Pakam road pavement consisting of a cement concrete slab as a foundation layer and a foundation laver above the subgrade. The purpose of this study was to evaluate the thickness of the pavement using the Highways Method. The research method used is the secondary data collection method. The data collected include traffic data, concrete data, soil data, vehicle axle free data, CBR modulus of subgrade. Plaanning the thickness of the road pavement concrete slab using the Highways Method obtained 300 mm. A planner is expected to have “felling engineering” supported by extensice knowledge and experience gained in the field.

SIFAT DAN KARAKTERISTIK CAMPURAN BETON MENGGUNAKAN BATU PECAH DAN BATU GULI DARI SUNGAI BINJAI

Concrete is a construction material consisting of a mixture of cement, aggregate, water and with or without admixture if needed. Coarse aggregate and fine aggregate serve as the main filler of concrete as well as reinforcement, while the cement and water mixtured serves as a binder between materials. To find out and study the behavior of each of these concrete constituents, it is necessary to know the characteristics of the materials made as constituents of the concrete. This study was conducted with the aim of comparing the most optimum type of coarse aggregate used and the comparison of the use of cement for coarse aggregate of crushed stone and coarse aggregate of gully originating from North Sumatera area, namely from the Wampu River in Binjai City as a concrete mixture to see its effect on compressive strength of concrete at the same concrete characteristics namely f’c 25 MPa. The results of the normal concrete mix design are obtained by using coarse aggregate of crushed stone and coarse aggregate of boulder in different amounts of cement. The coarse aggregate of crushed stone requires more cement with the amount of cement 411.1 kg/m3 than the coarse aggregate of gum with the amount of cement 388.9 kg/cm3.

PENINGKATAN HASIL BELAJAR IPA SISWA KELAS VIII SMP PARULIAN 1 MEDAN MENGGUNAKAN MODEL PEMBELAJARAN INKUIRI BERBANTUAN ANIMASI

This research is motivated by the low science scores of students at the school, so researchers want to conduct research to find out if there is an increase in student learning outcomes in science when using the animation-assisted inquiry learning model. This type of research is quasi-experimental, the research design used is Two Group Pre test-Post test Design, eighth and the research population is all grade students of SMP Swasta Parulian 1 Medan. The instrument used in the learning outcomes test was 20 multiple choice questions which were validated by 2 science teachers in junior high school. The research result shows the score average pre test of 37.80 in 40.00 in the experimental class and control class and score post test of 82.00 in 71.00 in the experimental class and control class. Each sample group has normal data and has been tested using the Lilliefors test using SPSS, with the calculation of the results pre test obtained that L significance > 0.05, namely (0.114 > 0.05) for the experimental class and (0.148 > 0.05) for the experimental class. control, and the results post test obtained that L significance > 0.05, namely (0.066 > 0.05) for the experimental class and (0.071 > 0.05) for the control class. Furthermore, the data for both samples have homogeneous variances and have been tested using the SPSS F test, with the calculation of the results pre test obtained that F significance > 0.05 (0.728 > 0.05), and the results post test obtained that F significance 0.05 ( 0.050 ≥ 0.05). The research hypothesis test was carried out using the t-test (one-sided test). From the calculation results, it is obtained that the t significance < 0.05 is (0.000 < 0.05). then the result of hypothesis Ha is accepted. Based on the results of the overall data analysis, the t significance of < t is (0.000 < 0.05) and simple regression analysis Y = a + bx is Y = 38.347 + 0.573X. Inquiry learning model assisted by animation media can improve student learning outcomes with a large effect of increasing learning outcomes 15.5% which has a correlation coefficient of r = 0.491 (medium positive correlation). In conclusion, science learning outcomes using an inquiry learning model assisted by animation media can increase student learning outcomes by 15.5%.