Article Per Year (5 Year)
p-Index From 2021 - 2026
1.048
P-Index
This Author published in this journals
All Journal RACIC : Rab Construction Research
Sumaidi
Universitas Pembangunan Nasional Veteran Jawa Timur
Civil Engineering, Building, Construction & Architecture

Published : 6 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 6 Documents
Search

 1 
ANALISIS KARAKTERISTIK STRUKTUR GEDUNG RUMAH SAKIT DENGAN DIBERI PERKUATAN DIAFRAGMA PELAT LANTAI PADA GEDUNG CIPUTRA HOSPITAL Krisna Dwi Sanjaya; Sumaidi; Nia Dwi Puspitasari
Racic : Rab Construction Research Vol. 10 No. 1 (2025): JUNI 2025
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/racic.v10i1.5242

Abstract

The structural planning of the hospital is designed as an earthquake resistant building. The beam-column connection area is a vulnerable area that must be designed by taking into account the inelastic deformation in the event of an earthquake. Therefore, a floor slab diaphragm is used as an earthquake resisting system. In this study, the floor slab diaphragm is modelled as a rigid diaphragm and is expected to provide lateral resistance to a ductile structure. To determine the level of ductility of a structure, the pushover analysis method is used. Pushover analysis is an analysis to determine the level of collapse of a structure against an earthquake and can determine the level of ductility of a structure. From the analysis results, the ductility value for the x direction is 1.55 and for the y direction is 2.15. So, the behaviour of the building structure after being reinforced with a floor plate diaphragm has a partial ductility level with a structural performance level of Immediate Occupancy (IO), which means a condition where the structure is still safe and strong to use activities shortly after an earthquake occurs.
COMPARISON OF PERIOD VALUE, DISPLACEMENT, AND DEVIATION BETWEEN LEVELS IN EKA CANDRARINI HOSPITAL BUILDING USING FIXED BASE SYSTEM AND BASE ISOLATION SYSTEM (HDRB) Nanda Primarta Nadila; Wahyu Kartini; Sumaidi
Racic : Rab Construction Research Vol. 10 No. 2 (2025): DESEMBER
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/racic.v10i2.5460

Abstract

One of the innovations that continues to be developed in the planning of earthquake-resistant building structures is the use of base isolation systems. Base isolation has various types, one of which is high damping rubber bearing (HDRB). HDRB is one type of base isolation that has a relatively large initial stiffness value, so can reduce a high enough earthquake force. To find out the comparison of period, displacement, and deviation values between levels using a fixed base system and an HDRB type base isolation system in the Eka Candrarini Hospital building, it is necessary to calculate the structural analysis using an auxiliary program. Based on the analysis, it was found that there was an increase in the period value of the structure by 67%, the displacement value in the X direction by 73% and the Y direction by 22%, and a decrease in the deviation value between levels by 42% in the X direction and 43% in the Y direction.
Structural Design Analysis of an Apartment Using a Flat Slab System with Prestressed Slabs RIVI FATHURRACHMAN AZIS; Wahyu Kartini; Sumaidi
Racic : Rab Construction Research Vol. 10 No. 2 (2025): DESEMBER
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/racic.v10i2.5468

Abstract

Pakuwon Residence Apartment is one of the high-rise buildings supporting vertical housing infrastructure in Bekasi City, West Java. The building employs a conventional structural system (slab, beam, and column). By using a flatslab system, the height of high-rise buildings is reduced because the ceiling height of each floor can be maximized. The disadvantage of the flatslab system is significant horizontal displacement; therefore, reinforcement with drop panels is necessary. Analysis was performed using the pushover method through dynamic analysis with the assistance of computer software. From the pushover analysis, the following results were obtained:Maximum displacement in the X direction is 41.085 mm (< 56 mm), Maximum displacement in the Y direction is 56.2925 mm (< 80 mm), Torsional irregularity is 1.155 (< 1.2), P-Delta effect is 0.0163 (< 0.1), Shear force is 21.21 MPa (≥ 2.92 MPa), Structural performance level is 0.0015 m and 0.0021 m (< 0.01), indicating the building is still classified as immediate occupancy (IO), Ductility is 2.94 (in the X direction) and 1.99 (in the Y direction), and classifying it as partial ductility.
The ANALISIS KINERJA STRUKTUR GEDUNG KULIAH TERPADU PPNS MENGGUNAKAN METODE SISTEM GANDA: Indonesia Mochamad Ilham Zulfar; Sumaidi; Wahyu Kartini
Racic : Rab Construction Research Vol. 10 No. 2 (2025): DESEMBER
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/racic.v10i2.6449

Abstract

The Integrated Lecture Building of the State Polytechnic of Shipbuilding Surabaya is constructed vertically or in multiple stories. However, multi-story buildings are vulnerable to lateral loads such as earthquakes and strong winds, especially since Surabaya has the potential for seismic activity. Therefore, the building must be designed to possess optimal structural resistance to lateral loads, such as earthquakes. In this study, the building is designed using a dual system, which is a combination of moment-resisting frames and shear walls to enhance the even distribution of lateral loads. The performance evaluation method used in the building design is a nonlinear static method, namely pushover analysis, based on ATC-40 guidelines. Based on the analysis results, the structural performance level falls under the Immediate Occupancy (IO) classification and exhibits full ductility.
PENGARUH VARIASI FAKTOR AIR SEMEN TERHADAP KUAT TEKAN DAN MORFOLOGI BETON GEOPOLIMER FLY ASH TIPE F Eliza Siti Syarifah; Wahyu Kartini; Sumaidi
Racic : Rab Construction Research Vol. 11 No. 1 (2026): JUNI
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/racic.v11i1.6696

Abstract

Geopolymer concrete is one of the alternative substitutes for conventional concrete by utilizing fly ash as a cement substitute. This study examines the effect of varying water-to-cement ratios of 0.3, 0.4, and 0.5 on the morphology and compressive strength of type F fly ash-based geopolymer concrete. The activators used were 10 M NaOH and Na₂SiO₃ with a ratio of 1:1 through the dry mixing method. Morphological testing was conducted using SEM-EDX, and compressive strength was tested using a UTM at 28 days. The results showed that conventional concrete with W/C 0.3 had a dense morphology with low porosity, producing a compressive strength of 32.38 MPa. W/C 0.4 showed a rounded morphology with moderate porosity and a compressive strength of 31.82 MPa. Meanwhile, W/C 0.5 exhibited a rough morphology with high porosity and a compressive strength of 19.48 MPa. In contrast, all variations of geopolymer concrete showed loose morphology, high porosity, and low compressive strength 2.36 MPa W/C 0.3, 1.32 MPa W/C 0.4, and 1.32 MPa W/C 0.5. On average, the compressive strength of geopolymer concrete decreased by 93.93% compared to conventional concrete. The poor performance was due to the incomplete formation of N–A–S–H gel, as water could not dissolve Na₂SiO₃ in the dry mixing method, preventing optimal bonding between fly ash particles. Therefore, type F fly ash geopolymer concrete using the dry mixing method cannot be considered a substitute for Portland cement conventional concrete.
ANALISIS DAN PERANCANGAN DINDING PENAHAN RADIASI PADA RUANGAN RADIOGRAFI UMUM DI RSUD GAMBIRAN KEDIRI Akbar Firdaus; Syahrul Romadhon; Sumaidi
Racic : Rab Construction Research Vol. 11 No. 1 (2026): JUNI
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/racic.v11i1.7346

Abstract

The advancement of medical technology demands high safety standards, particularly regarding the use of ionizing radiation in healthcare facilities. This study aims to analyze and design radiation shielding walls for the general radiography room at RSUD Gambiran Kediri to ensure the safety of workers and the community in accordance with national standards. The research method involved evaluating radiation protection parameters, including weekly workload, occupancy factors, and the distance from the radiation source to measurement points, based on NCRP Report No. 147 recommendations and BAPETEN regulations. Analysis results indicate that the wall design, utilizing 15 cm thick lightweight concrete bricks with a 2 mm lead (Pb) lining, exceeds the minimum technical requirements of 107.2 mm brick thickness and 0.28 mm lead lining. Consequently, this design provides a sufficient safety margin and is declared safe to support diagnostic radiography service operations
Co-Authors Akbar Firdaus Eliza Siti Syarifah Krisna Dwi Sanjaya Mochamad Ilham Zulfar Nanda Primarta Nadila Nia Dwi Puspitasari RIVI FATHURRACHMAN AZIS Syahrul Romadhon wahyu kartini