Buntara Sthenly Gan
Civil Engineering Master's Study Program, Faculty of Engineering Universitas 17 Agustus 1945 Surabaya

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Assessment of Precast Structural Design for Economy and Time Savings in the Borong Hospital Design and Build Initiative Aldo Salam Lubis; Ony Frengky Rumihin; Buntara Sthenly Gan
Formosa Journal of Science and Technology Vol. 5 No. 6 (2026): June 2026
Publisher : PT FORMOSA CENDEKIA GLOBAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55927/fjst.v5i6.88

Abstract

The erection of hospital edifices necessitates building techniques that fulfill the criteria for excellence, economical expenditure, and swift project finalization. One strategy that is commonly utilized is the adoption of precast concrete frameworks, which are seen as effective in enhancing productivity and shortening the period of on-site construction. This research intends to assess how the integration of a precast structural framework influences cost and time efficiency within the Borong Hospital Design and Build Initiative. The study utilized a quantitative descriptive approach by performing a comparative investigation between precast structural design and traditional structural design, focusing on working blueprints, cost projections (RAB), and project timelines. The evaluation centered on primary structural elements, such as columns, beams, and floor slabs, to ascertain the degree of cost savings and time efficiency achieved. The findings demonstrate that the use of precast structures can lead to a decrease in the timeline for structural tasks, as the manufacturing process occurs concurrently with on-site construction activities, enhancing project time efficiency by a total of 46 days, which is equivalent to 20.91%. Moreover, the incorporation of precast structures offers cost advantages due to diminished needs for formwork, labor, and wastage of construction materials, leading to savings of IDR 1,150,515,798.29, representing 5.18% of the overall structural expenditure. Hence, precast structural design can be regarded as a viable option for enhancing the performance of construction endeavors, especially in hospital projects that demand high quality standards and strict deadlines
Examination of The Compressive Strength and Buckling Characteristics of Welded H-Beam And Hot-Rolled H-Beam Columns Febri Novianto; Ony Frengky Rumihin; Buntara Sthenly Gan
Formosa Journal of Science and Technology Vol. 5 No. 7 (2026): July 2026
Publisher : PT FORMOSA CENDEKIA GLOBAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55927/fjst.v5i7.101

Abstract

One of the most common types of steel profiles used in column and beam construction is the H-Beam profile. This profile has the characteristics of high flexural strength and cross-sectional efficiency against axial compressive loads. There are two main types of H-Beams in widespread use: hot-rolled (prefabricated) H-Beams and welded (welded assemblies). The use of H-Beam steel profiles as column elements is increasing due to their good compressive capacity and structural efficiency. H-Beam profiles are generally used in hot-rolled and welded-built-up forms, which have different manufacturing characteristics, structural behavior, and fabrication costs. The analysis was conducted using theoretical calculations based on SNI 1729:2020, nonlinear analysis based on the Finite Element Method (FEM) using SAP2000. The parameters evaluated include nominal compressive capacity (Pn), ultimate numerical capacity (Pu), behavior and stability against global buckling, fabrication costs, and the cost-to-capacity ratio. The results showed that the hot-rolled profile had a nominal control compressive capacity of 162,743 kgf and a numerical control ultimate capacity of 193,015 kgf, higher than the welded built-up profile of 158,710 kgf and 189,465 kgf. The hot-rolled profile also showed better stability with a buckling factor of 1.97455, compared to the welded built-up profile of 1.92217. Based on structural and economic evaluations, the hot-rolled H-Beam profile showed more optimal performance than the welded built-up profile under the conditions of this study