Nusantara Journal of Science and Technology

Design and Development of a Web-Based Letter Archive System Using the Waterfall Method for the Indonesian Islamic Student Movement (PMII) Nahdlatul Ulama University Commissariat, South Kalimantan

2025-01-13T13:39:56+07:00

The Indonesian Islamic Student Movement (PMII) South Kalimantan Nahdlatul Ulama Commissariat is a student organization that is actively involved in various academic and non-academic activities. One of the basic needs of this organization is to manage mail archives efficiently and regularly. This research aims to design and develop a web-based letter archive system that can help PMII in managing letter archives more effectively. The method used in this research is the Waterfall method, which involves several stages, namely requirements analysis, system design, implementation, testing and maintenance. At the needs analysis stage, user needs and system specifications to be built are identified. Next, system design is carried out which includes designing the database, interface and system workflow. The implementation stage is carried out by building a system using the PHP programming language and MySQL database. System testing is carried out to ensure the system runs according to predetermined specifications. Finally, the maintenance stage is carried out to ensure the system continues to function properly and make repairs if errors are found. This system is expected to increase the efficiency and effectiveness of managing letter archives at PMII Nahdlatul Ulama Commissariat, South Kalimantan.

STUDENT ACHIEVEMENT DATA MANAGEMENT INFORMATION SYSTEM USING PHP AND MYSQL (CASE STUDY OF NAHDLATUL ULAMA UNIVERSITY OF SOUTH KALIMANTAN)

2025-01-23T00:34:41+07:00

This study aims to develop an application that can store and manage student achievement data well to support increased efficiency in scholarship distribution. In addition, it also includes improving the selection process and student achievement assessment to be more accurate and transparent, as well as improving the quality of management of the achievement scholarship program at the Nahdlatul Ulama University of South Kalimantan (Unukase). This study used the prototype method. The method used in this study is the prototype method of software development models consisting of the stages of needs analysis, design, coding, and testing. This method allows researchers to get direct feedback from users during the system development process. The result of this study is a web-based application that helps manage student achievement data at Unukase.

Modeling ductile behavior of High Strength Concrete T-Beams

2025-04-25T10:47:52+07:00

The use of reinforced concrete beams using a slender and high quality make manufacturing more efficient, but it could be a problem, especially in terms of deflection and torque occurs. Besides the issue of deflection and torsion of reinforced concrete beams are also vulnerable to shear failure, because the beam will suddenly fall without notice. By increasing the volume of concrete, it will increase the ability of beam bending, shear, ductility and strengthen the torsion beam, but if increasing the volume of concrete will increase the cost and increase the space or want a beam to beam slim in terms of aesthetics . This experiment without increasing the volume of concrete but do in the area of compressed concrete curbs and closed.

Experimental models used are high quality concrete T beam with a length of 3.85 m . The number of flexural steel reinforcement 3 pieces with a diameter of 16 mm bending, body reinforcement of 8 mm diameter, 8 mm diameter tensile reinforcement and stirrups of 8 mm diameter (Ramaswamy, 2006). Furthermore, the implementation of a model created in ANSYS with the concrete material was modeled as SOLID 65, Steel material is modeled with SOLID 45, and reinforcing steel were modeled as LINK 8. Then redesign beam experiments with the same capacity so that the beam implementation in detail as reinforced concrete beams with a span length profiles T (L) 3.85 m, height (h) 350 mm, web beam width (bw) 150 mm, effective flens width (be) 375 mm, 450 mm and 600 mm. Beam profile T design used double the number of reinforcement rebars press 6 pieces of 10 mm diameter, reinforced pull 3 pieces of 22 mm diameter, and stirrups were used diameter of 10 mm. The quality of concrete used (fc') = 65 MPa. Flexural yield stress and tensile steel reinforcement is used (fy) = 400 MPa and reinforcement steel stirrups used (fy) = 240 MPa. Analysis of the modeling is done using the finite element method with a variation of the cross bar spacing of 50 mm, 75 mm, and 100 mm.

The results showed that the load at the first crack that can be accepted on a concrete T beams with increasingly high quality meeting the local press stirrup spacing increased ( but less significant influence ). Then when the ultimate load on the beam can be accepted T on high strength concrete with closed the local press stirrup spacing increased ( significant influence ). Sengkang also affect the crack, the closer the distance stirrup in the press area will strengthen the concrete and reduce the widening cracks, as seen at the time of the first concrete crack and crack mangalami ultimate. While the effective width also affected, the greater the effective width of high strength concrete T beams will increase the moment capable of being held, so that the beam is getting stronger and greater ductility.

ANALYSIS OF DESIGN, STRUCTURE AND IMPLEMENTATION METHODS FOR MANUFACTURING HEAVY ORNAMENTS OF THE BABUSSALAM TOWER OF AS-SUADA WARING MOSQUE

2025-04-30T13:32:32+07:00

Mosque minarets are usually tall buildings equipped with loudspeakers for the call to prayer. The shapes of existing mosque towers vary. There are classic shapes, variations, rectangular, spiral towers and cylindrical towers. In classical towers, the ground floor is rectangular, rising to the top to become an octagon, then a cylindrical tower topped by a small dome. The Babussalam Tower is located near the Babus Salam door, door number 1 in the Nabawi Mosque in Medina. It was built in 1307 AD. This tower model was chosen by the owner of the tower construction work for the As Suada Mosque, Waringin Hulu Sungai Utara. This research focuses on ornaments that are quite large, massive and heavy. Its complex shape and high location result in the need to guarantee structural strength and long durability. Failure of this section carries a major risk of accident for anyone crushed below. This requires careful planning and implementation methods to ensure the work is of good quality, both in terms of design accuracy and strength. Writing down the methods that have been used and appear to be successful can hopefully be a trail that can be studied for other complex ornamental structures in the future.

Steel Structure Study as an Alternative Review Design to Reinforced Concrete Structure (Case Study of 2-Storey Building of Puskesmas 9 Nopember Banjarmasin)

2025-05-31T07:58:04+07:00

Current building construction uses more concrete structures, not many of which use steel structures. One of the advantages of using steel is that steel work is faster with simpler steel structure installation support tools, so that it can save procurement costs and time. This study aims to plan the 2-Storey Building of the Puskesmas 9 November Banjarmasin which initially used a reinforced concrete structure into a steel structure. The research method used is to plan columns and beams in the form of steel using the SAP2000 application and earthquake loading according to SNI 1726:2019. Through the calculation of loading and application of structural loads in SAP2000, the value of the ultimate load (Pu) acting on the column and the ultimate moment (Mu) on the beam are obtained. The value of the ultimate load (Pu) will affect the amount of the factored nominal load (?Pn), because the factored nominal load (?Pn) must be greater than the ultimate load (Pu) so that the building structure is safe. However, if the nominal factored load (?Pn) is too large than the ultimate load (Pu), it will cause waste in the building structure (column). From the calculation results, the WF steel profile used is 200.200.10.16 fy = 240 MPa for change a 30x30 column 1st floor and 100.100.6.8 fy = 240 MPa for change a 15x30 at column 2nd floof. On the 1st floor beam measuring 20x30 using the WF steel profile 200.150.6.9 fy = 240 MPa and on the 20x30 beams on floors 2 using the WF steel profile 200.150.6.9 fy = 240 Mpa or fy=450 MPa.