Marginal coastal land has not been able to be utilized optimally by communities around the coast for agriculture. So far, coastal sand land has limited management and is considered to be poor. With the limited beach sand land, efforts need to be made to increase its productivity by providing soil improvement materials and by the right way to fertilize. The aim of this research is to determine the effect of applying soil amendments and doses of TSP fertilizer to marginal coastal land. The location of this research was carried out in Sidorejo Village, Langsa Lama District, Langsa City with an altitude of ± 10 m above sea level. This research was structured using a factorial Randomized Block Design (RAK), as the first factor, namely the type of soil amendment material P1 (husk charcoal), P2 (wood charcoal), P3 (zeolite) and P4 (clay), the second factor was the level of TSP fertilizer dose, namely D0 (0 kg)/ha), D1 (100 kg/ha), D2 (150 kg/ha), D3 (200 kg/ha) and D4 (250 kg/ha). Data were analyzed using anova (F experiment) from the 5% and 1% levels. If the treatment has a real effect, then continue with the BNJ test at the 5% level. The research results showed that the type of soil amendment material had a very significant effect on the parameters of number of branches and number of pods per plant. The best results were found in the soil amendment type P2 (husk charcoal). And the dose of TSP fertilizer has a very significant effect on the number of pods per plant. The best results were obtained on D4 (25 g/polybag).

The aim of this study is to determine the effect of the duration of young coconut water soaking and different growing media on the viability of Arabica coffee seeds after mechanical scarification, as well as to identify the interaction between these two factors. This research was conducted over a period of three months, from July to September 2023, at the Laboratory of the Faculty of Agriculture, Samudra University, Langsa City. The study was designed using a completely randomized design with a factorial pattern, consisting of two factors: (1) the duration of soaking in young coconut water, which included 4 levels: L0 = Control, L1 = 3 hours, L2 = 6 hours, and L3 = 9 hours; and (2) growing media, which included 3 levels: M1 = Soil: manure, M2 = Soil: manure: rice husk, and M3 = Soil: manure: cocopeat. The parameters observed in this study were maximum growth potential, germination rate, seedling height, root length, seedling fresh weight, and seedling dry weight. The results showed that the duration of soaking in young coconut water did not have any significant effect on all observed parameters. However, different growing media had a highly significant effect on maximum growth potential, germination rate, seedling height, root length, fresh weight, and dry weight of the Arabica coffee seedlings. The M1 treatment gave the best results for maximum growth potential, germination rate, seedling fresh weight, and seedling dry weight, while the M3 treatment provided the best results for seedling height and root length of Arabica coffee seeds. There was no interaction between the duration of young coconut water soaking and different growing media on all parameters of Arabica coffee seed viability.
 

This study aims to determine the influence of cost factors in determining the success of the modernisation and rehabilitation project in saddang sub unit langnga pinrang district, determine the influence of time factors in determining the success of the modernisation and rehabilitation project in saddang sub unit langnga pinrang district. determine the influence of quality factors in determining the success of the modernisation and rehabilitation project in saddang sub unit langnga pinrang district, determine the influence of health, safety and environmental factors in determining the success of the modernisation and rehabilitation project in saddang sub unit langnga pinrang district.  This research was conducted using quantitative analysis, namely through distributing questionnaires and interviews to the owner, the contractor and the consultant, Data analysis carried out on the questionnaire collected using skinative statistics, namely the percentage to determine the main factors of the success of a project using the Statistical Package for The Social Sciens program.

Increased economic growth in the city of Parepare with the presence of buildings around the estuary. In general, the composition of concrete making materials is taken from good materials. The problem encountered in the field is that the quality of concrete in construction decreases due to brackish water, causing structural elements in the construction to become porous. Meanwhile, preventive measures are rarely or never taken. As a result, the construction life is very short. Brackish water is one of the causes of structural failure. This is due to the content of sulfate and chloride ions in water containing salt/salts that react with chemical elements in reinforcing steel resulting in corrosion of the reinforcement. The purpose of the study was to analyse the compressive strength of concrete with a mixture of clean water against the percentage of brackish water with a maintenance age of 7, 14, 21, and 28 days. The results showed that brackish water had an impact on reducing the compressive strength of concrete due to the high chemical content in brackish water such as Sulfate (SO²¯) of 52.5 in brackish water in Kenjeran and 62.5 in brackish water in mangrove. Dissolved Solids (TDS) of 15188 mg/l in kenjeran brackish water and 3436 mg/l in mangrove brackish water. Organic Content (KMnO) of 8.05 mg/l in kenjeran brackish water and 6.69 mg/l in mangrove brackish water is too high, so the chemical content contained in brackish water can damage the compounds in the cement content and decrease the strength of the materials contained in the concrete. In this case it can result in concrete having a very low durability.

Soil compaction is required to extend firmness, volume weight and diminish soil porousness at the extend area where adaptable asphalt framework will be built. The point of this inquire about is to decide the impact of soil thickness on street development utilizing the sandcone strategy and to decide the comparison of field compaction testing (Sand Cone) with research facility compaction testing (Compaction Testing) on the development of the Takkalasi-Bainange Lawo area of the Soppeng Rule street. This research was carried out within the Respectful Designing research facility of the Muhammadiyah College of Parepare for 4 months from Eminent to December 2023 utilizing the Sandcone test strategy compared to the compaction strategy. The comes about of the investigation of sandcone testing on soil thickness during the development of Jalan ruas takkalasi-bainange lawo within the locale soppeng, appeared that the thickness of dry soil within the gap was an normal of 2.368 gr/cc. and the comes about of the comparison of Field Compaction Testing (Sand Cone) with Research facility Testing (Compaction Testing) appeared that the most elevated degree of thickness was at STA 2 + 600 at 104.94 and the least degree of thickness was at STA 2 + 300 with a esteem of 101.24 and in case found the middle value of the thickness degree esteem is 101.383%. From the comes about gotten, it meets the Binamarga details, specifically a least of 90%, so the compaction on the development of the Takkalasi - Bainange Disoppeng street is classified as exceptionally compelling since it has met the least details
 
 

Polystyrene plastic waste is difficult to decompose naturally and becomes microplastics which pollute the environment. Therefore, plastic waste is utilized in road pavement mixtures. This research aims to find out whether the addition of Polystyrene to AC-BC asphalt with levels of 4% and 5% can improve the quality of asphalt based on the 2018 General Bina Marga specifications. This research was carried out in a laboratory and analyzed using the Marshall method. AC-BC asphalt test results with polystyrene content of 4% and 5%, show that only the VIM value at 4% plastic content with a value of 3.88% meets and 5% plastic content with a value of 2.58% does not meet the range of 3%-5%. , then apart from the VIM value of AC-BC asphalt it meets the specifications. Keywords: AC-WC, AC-BC, Polystyrene, Marshall

The aim of this research is to analyze the effect of adding hyperplasticizer and retarder on the compressive strength of self-compacting concrete. Fine aggregate and coarse aggregate from the Jenneberang River, Kab. Gowa. The concrete mix design uses a trial and error mix design for self-compacting concrete by making visual observations, so that the physical conditions of the mixture appear to be sufficient to produce a good mix. The stages of this research, by finding a comparison of the slump flow values ??of the self-compacting Concrete concrete, then making test objects, after that curing the test objects using the water curing method for 28 days, then testing the compressive strength of the self-compacting Concrete concrete to produce comparison to the compressive strength of normal(conventional) concrete. The results of this research show that self-compacting concrete has a compressive strength value of 46.25 Mpa compared to normal concrete of 45.02 Mpa, an increase of 2.73% compared to normal concrete. And the slump value of normal concrete is 8 - 13 cm, while the slump flow of self-compacting concrete is 63 - 84.9 cm, with a time range between 2.53 - 3.46 seconds, able to reach a diameter of 500 mm on the segregation board.
 

Maccorawalie Gas Station is one of the gas stations located in Pinrang. Regency, with an increase in the number of vehicles, it will automatically result in  an increase in fuel demand as a result of fuel scarcity, causing motor vehicles owners to be able to queue for hours at public fuel filling stations. This Research aims to determine the length of queues that occur due to delays in fuel. supply and the level of service and arrival at the Maccorawalie gas station.Using quantitative research methods, using Model B Formula calculations: (M/M/S) (Multiple Line Queue Model). The research results show that the queue length that occurs due to delays in fuel supply at peak hours 10:00–11:00 WITA On Monday, 21 August 2023, is 44 meters, and on Thursday, 24 August 2023, is 12.75 meters, and on Saturday, August 26, 2023, namely 31.5 meters. The level of service on Monday, August 21 2023 is 3 vehicles per hour on Thursday, August 24. 2023, it is 8 vehicles/hour, and on Saturday, August 26, 2023, it is 4 vehicles/hour. The arrival rate on Monday, August 21, 2023, is 7 vehicles per hour.On Thursday, August 24, 2023, it is two vehicles per hour, and on Saturday, August 26.In 2023, it will be 5 vehicles per hour.

Bawasalo beach sand shows the potential of abundant material resources, but local people still face several considerations in the use of this material. The purpose of this research is to determine the characteristics and effect of the addition of bawa salo sand on compressive strength and split tensile strength. This research uses an experimental method carried out at the Structure and Materials Laboratory of Muhamadiyah University of Parepare using a sample of 27 cylinders with the compressive strength of the plan used is 25 Mpa. Based on the test results, the characteristics of Bawasalo beach sand have met the specifications to be used as fine aggregate for concrete mixtures. The results of normal concrete testing aged 7 days with an average of 17.41Mpa, at 28 days testing with an average of 27.77MPa, 50% variation aged 7 days with an average of 16.84MPa and 100% variation aged 7 days with an average of 13.16MPa and at 28 days testing with an average of 21.80MPa. Normal concrete testing aged 28 days 10.444 MPa, 50% variation with an average of 5.556 MPa and as for the 100% variation with an average of 3.889 MPa. Based on the results of research data analysis, compressive strength and split tensile strength decreased as the percentage of Bawasalo beach sand use increased.