Apartment Construction Research Articles

A LSTM algorithm-driven deep learning approach to estimating repair and maintenance costs of apartment buildings

PurposeThis study proposes a deep learning algorithm-based model to predict the repair and maintenance costs of apartment buildings, by collecting repair and maintenance cost data that were incurred in an actual apartment complex. More specifically, a long short-term memory (LSTM) algorithm was adopted to develop the prediction model, while the robustness of the model was verified by recurrent neural networks (RNN) and gated recurrent units (GRU) models.Design/methodology/approachRepair and maintenance cost data incurred in actual apartment complexes is collected, along with various input variables, such as repair and maintenance timing (calendar year), usage types, building ages, temperature, precipitation, wind speed, humidity and solar radiation. Then, the LSTM algorithm is employed to predict the costs, while two other learning models (RNN and GRU) are taught to validate the robustness of the LSTM model based on R-squared values, mean absolute errors and root mean square errors.FindingsThe LSTM model’s learning is more accurate and reliable to predict repair and maintenance costs of apartment complex, compared to the RNN and GRU models’ learning performance. The proposed model provides a valuable tool that can contribute to mitigating financial management risks and reducing losses in forthcoming apartment construction projects.Originality/valueGathering a real-world high-quality data set of apartment’s repair and maintenance costs, this study provides a highly reliable prediction model that can respond to various scenarios to help apartment complex managers plan resources more efficiently, and manage the budget required for repair and maintenance more effectively.

제주도 지역 아파트 주거요인이 주거만족도 및 재구매 의도에 미치는 영향

The purpose of this study is to verify the moderating effect of real estate psychology on the impact of apartment housing factors on residential satisfaction and repurchase intention among residents of apartments in the Jeju region. To this end, a survey was conducted on 437 residents of apartments in Jeju, and the causal relationships were analyzed. The research results are as follows: First, among the apartment housing factors, locational factors negatively (-) influenced apartment preference, locational and maintenance satisfaction, and repurchase intention. Physical and economic factors negatively (-) influenced apartment preference and locational and maintenance satisfaction. In contrast, social relational factors positively influenced apartment preference, locational and maintenance satisfaction, and repurchase intention. Second, it was found that socioeconomic investment psychology and personal psychological factors played a moderating role in the impact of housing factors on residential satisfaction and repurchase intention. The implications of the research results are as follows: First, previous studies have shown that housing factors or apartment purchase decision factors positively influence residential satisfaction and repurchase intention. However, in this study, except for social relational factors, locational factors and physical and economic factors were found to have negative (-) influences. This difference is thought to arise because most previous studies targeted inland apartments rather than those on islands like Jeju. Additionally, the dissatisfaction with housing factors in Jeju appears to stem from the limited area available for apartment construction, suggesting a need to stabilize apartment prices to overcome this issue. Second, the significance of this study lies in analyzing the moderating effect of investment psychology, which has been scarcely examined in previous research, indicating that socioeconomic investment psychology and personal psychological factors should be considered when constructing apartments.

The Swedish Production of Apartments as a Function of GNP, Building Costs and Population Changes: Generation of Intelligent Media Content via Big Data Analytics

The production of new apartments in Sweden has varied strongly during the period from 1975 to 2021. A new statistical function, which explains these production changes, has been developed. This function is designed, based on a set of hypotheses of how the production level should be affected by different explaining factors, such as the GNP, the size of the population, the growth of the population, and the cost of construction. The following hypotheses could not be rejected: the apartment production is a strictly increasing and strictly convex function of GNP, and a strictly increasing function of the size of the population and the growth of the population, and a strictly decreasing function of the cost of construction. The parameters of the statistical function have been estimated with high precision, via multiple regression analysis. It was not possible to detect heteroscedasticity via residual analysis. Furthermore, no indications that nonlinear transformations would improve the selected model were found. The apartment production model contains a strongly significant negative time trend. The estimated function is used to predict the future apartment production until the year 2050. The predictions are based on assumed growth levels of GNP and the population, and on alternative future time trends of the construction cost index. If the real construction cost index continues to grow with the same average trend as from the year 1993 to 2021, the future apartment construction level will stay almost constant at 40,000 apartments per year until 2050. If the future real construction cost index stays constant at the level in 2022, the production of new apartments will grow to almost 90,000 apartments per year in 2050. If the real construction cost index can be decreased to the level in 1993, the production of new apartments will grow to almost 130,000 apartments per year in the year 2050.

분양원가를 공개하면 아파트 가격이 하락하는가?

This study analyzed whether the disclosure of apartment construction cost actually decreased apartment prices using the synthetic control method (SCM) while taking into account the sudden disclosure of apartment construction cost of Segok 2 District 4 (Gangnam Hanyang Sujain) by SH Corporation in February 2022 as a natural experiment. In the analysis, the treatment group was Set to the 85㎡ exclusive private area type of the Gangnam Hanyang Sujain, and the control group was Set to the apartment complexes located within a radius of 2km (#17), 3km (#33), 4km (#46), and 2-4km (#30) centered on the Gangnam Hanyang Sujaini, respectively. The results of the analysis show that apartment prices do not decrease in response to the disclosure of construction cost, in cases where the apartment market price was already established. This result is consistent with various robustness checks. This suggests that the policy of disclosing construction cost to stabilize apartment prices may not align with its purpose.

아파트 품질점검과 범죄예방환경설계의 적용에 관한 연구 - OO시 아파트 단지 3개의 사례분석을 중심으로

The joint housing quality inspection conducted since January 2021 for residential complexes with 300 or more units is an essential aspect of institutional verification aimed at providing residents with a safe and comfortable living environment. This study selectively identified items related to crime prevention environmental design from among the frequently cited 80 items in such inspections, and examined the importance of planning and implementing crime prevention environmental design through application in three selected case studies of residential complexes. The investigation revealed that the current inspection items for joint housing quality inspections lack elements related to crime prevention environmental design, and that some residential complexes surveyed did not meet the standards. Based on these findings, this study derives the following implications: Joint housing quality inspections in South Korea should not only consider the construction and durability of apartments but also expand the scope of inspection items to include various aspects such as surveillance, access control, spatial zoning, usability, clarity, and maintenance and management, including crime prevention environmental design. It is expected that this approach will help ensure the safety and comfort of apartment residents and enhance the safety and stability of urban communities.

Are All Apartments Equal? An Investigation of Contemporary Apartment Design Quality by Neighbourhood-Level Socioeconomic Disadvantage

ABSTRACT Rapid increases in apartment construction have ignited concerns about design quality. Lower income populations could be disproportionately impacted by poor design as they are more likely to live in apartments and have fewer resources to mitigate design problems. We examined whether there was a socioeconomic gradient in contemporary apartment design by measuring the implementation of quantifiable policy-specific requirements in buildings (n = 172) sampled from relatively low, mid, and high socioeconomic neighbourhoods within Sydney, Melbourne, and Perth. Findings suggest the presence (or absence) of detailed policy instruments interacts with local market conditions to impact apartment design quality.

Comparative Study of Cost and Eco-Efficiency Factors of Aluminum and Conventional Formwork in The AYOMA Apartment Construction Project

The AYOMA Apartment construction project used two types of formwork; both aluminum formwork and conventional formwork are applied on one floor. A comparison of the costs of the two types of formwork used has not been carried out in the project planning. This study aimed to obtain a comparison between aluminum formwork and conventional formwork in terms of cost and eco-efficiency factors. The comparison was made specifically on the formwork of the 3rd Floor of the West Tower, The AYOMA Apartment. The unit price analysis of formwork was based on the coefficient of each work item following the regulation on Unit Price Analysis of Public Works and unit price standards applicable in the project location area. The eco-efficiency factors were calculated from the waste produced by manpower. The calculation results showed that the cost of aluminum formwork for the 3rd Floor of West Tower of The AYOMA Apartment is IDR 2,708,328,757.73 or 2.25 times higher than the conventional formwork cost of IDR 1,204,987,034.60. However, when the reusability factor was considered, aluminum formwork is up to 14.83 times more efficient than conventional formwork. In the eco-efficiency factors analysis, the waste produced by manpower for the work of aluminum formwork is less, only 56.48% of the waste produced by manpower for the work of conventional formwork. The amount of waste produced from the main material and the quality of concrete produced by using aluminum formwork support the conclusion that aluminum formwork is more eco-efficient than conventional formwork.

PENGAWASAN FUNGSI PERIZINAN OLEH DINAS PENATAAN RUANG KOTA BANDUNG DALAM PEMBANGUNAN APARTMENT THE MAJ COLLECTION

The purpose of this study is to find out how far the licensing function is in the use of space in the city of Bandung in the construction of Apartment The Maj Collectin which is located in the Dago area. This study uses a qualitative descriptive method, using a literature study. The results of this study, the licensing function in the city of Bandung is not yet optimal, seen from the case of the construction of Apartment The Maj Collection. The conclusion of this study shows that the licensing function for spatial planning in the city of Bandung is still far from what was expected and the local government has not realized the awareness of all government officials. As a result, there has been a change in land use in the area which will have an impact on environmental damage and natural disasters such as landslides and floods.

Boxed in: changes in apartment residents’ health behaviours following the COVID-19 lockdown – a longitudinal cohort study

ABSTRACT Australia’s housing context has long been characterised by low-rise detached homes, but rapid population growth has prompted a recent boom in apartment construction. Apartment residents may be more vulnerable to the negative impacts of COVID-19 stay-at-home orders due to the distinct constraints and stressors of apartment housing, but empirical research on this population is scarce. This study adds to the literature on the health impacts of lockdowns by examining longitudinal changes in the health behaviours of Australian apartment residents. Participants (n = 159) completed a survey between 2017–2019 and a follow-up survey in 2020 following a six-week national lockdown. Residents reported increased walking for recreation, sleep duration, and home cooking frequency, but decreased walking for transport, greater sitting time, and weight gain. Alcohol consumption remained stable. The findings highlight the complex and multifaceted impact of the pandemic, with some health behaviour changes highlighting the benefits of having more time to devote to certain activities, and others showing the unintended negative health consequences of lockdowns. Given the likelihood of future pandemics, a renewed policy focus on apartment space and layout provisions that better facilitate home-based activity is required to mitigate the health risks of lockdown conditions for those living in apartments.

ЦИФРОВАЯ ТРАНСФОРМАЦИЯ ЭКОНОМИКИ

The article considers modern trends in the development of the market of individual housing construction in Russia and foreign countries. It is shown that the development of private homeownership is based on the tendency to individualization of personal space, which is a bright attribute of the national mentality of the inhabitants of countries with the lowest density of settlement. Besides, having one's own house will stimulate people to create a family and increase the number of children. The features of the Soviet period in the sphere of construction and spatial development are analyzed. The then existing emphasis on the development of mass apartment construction and high degree of urbanization led to the degradation of rural areas due to the mass outflow of population to the cities. Today it is necessary to change the existing model of spatial development, using foreign experience of suburbanization as a progressive direction of low-rise housing development. The authors emphasize that government support and IT technologies can act as drivers in the development of the Russian housing market.

РАЗВИТИЕ РЫНКА ИНДИВИДУАЛЬНОГО ЖИЛИЩНОГО СТРОИТЕЛЬСТВА: РОССИЙСКИЕ И МИРОВЫЕ ТРЕНДЫ

The article considers modern trends in the development of the market of individual housing construction in Russia and foreign countries. It is shown that the development of private homeownership is based on the tendency to individualization of personal space, which is a bright attribute of the national mentality of the inhabitants of countries with the lowest density of settlement. Besides, having one's own house will stimulate people to create a family and increase the number of children. The features of the Soviet period in the sphere of construction and spatial development are analyzed. The then existing emphasis on the development of mass apartment construction and high degree of urbanization led to the degradation of rural areas due to the mass outflow of population to the cities. Today it is necessary to change the existing model of spatial development, using foreign experience of suburbanization as a progressive direction of low-rise housing development. The authors emphasize that government support and IT technologies can act as drivers in the development of the Russian housing market.

공동주택 건설공사의 생산성이 프로젝트 성과에 미치는 영향에 관한 연구

Improving productivity is essential for securing a company's competitiveness and sustainable growth.
 However, research on the productivity of apartment complexes is insufficient to date. The purpose of this study was to study major factors and measures affecting construction productivity as part of basic efforts to improve productivity in the apartment construction process. Through this, the purpose was to reveal the impact of productivity on the performance of apartment construction projects and to find effective management measures to contribute to improving the efficiency and quality of the construction industry.
 For the empirical analysis of the study, statistical analysis was performed using data collected from 130 actual apartment complex construction projects. The analysis results show that the role of work factors in the apartment building construction stage has a positive effect on customer participation and relative performance, and that sales per person in terms of construction management personnel and human resources management appear to have a positive effect on performance The purpose of this study theoretically demonstrates the importance of maintaining appropriate productivity, and practically shows that customer satisfaction and financial performance must be achieved simultaneously by maintaining efficient productivity during the project execution stage.

SMART ENVIRONMENT: ANALYSIS OF WATER MANAGEMENT POLICY IN MAKASSAR


 
 
 
 Abstract
 This article aims to analyze the Makassar government's policies on clean water management in Makassar, one of Indonesia's major cities. Utilizing the concept of a smart environment as an analytical framework, this study investigates whether Makassar's clean water management aligns with the principles of a smart environment. The escalating construction of apartments and hotels has notable consequences for water resources in Makassar. Simultaneously, the city experiences rapid population growth each year, indirectly affecting clean water consumption. This qualitative study employs descriptive analysis, aiming to elucidate and depict the current events concerning the research object. Secondary data forms the basis of this study. Research findings indicate that Makassar's clean water management does not conform to the smart environment concept. This discrepancy can be attributed to inconsistent clean water distribution aggravated by the city's swiftly growing population. Furthermore, the implementation of smart environment principles in managing clean water resources, such as the development of Public Green Open Spaces, waste management, river revitalization, and slum settlement management, remains suboptimal. These aspects significantly impact the establishment of a smart environment, particularly concerning the universal provision of clean water for Makassar's residents.
 Keywords: Makassar City, smart environment, policy, water management
 
 
 

Safety and Security of the Environment for Flat Dwellers on the Granting of Building Rights Title (HGB) on Management Rights (HPL) for 80 Years

The development of high-rise apartment buildings is an alternative solution to meet the housing and settlement needs. After the enactment of the Job Creation Law (UUCK), the Government issued Regulation No. 18 of 2021 concerning Management Rights, Land Rights, High-rise Apartment Units, and Land Registration. In this regulation, the period of Building Use Rights (HGB) over Management Rights (HPL) can be granted for 80 (eighty) years for the construction of high-rise apartments. This study was conducted to determine whether granting HGB over HPL for 80 (eighty) years is appropriate to be implemented and whether it potentially threatens the safety and environmental security of the high-rise apartment residents. The study results show that based on the prevailing regulations, granting HGB over HPL for 80 (eighty) years is appropriate because there is periodic inspection of the feasibility of the function every 5 (five) years as a requirement for certificate of feasibility of function (SLF) extension. However, in terms of building reliability, granting HGB over HPL for high-rise apartments for 80 (eighty) years still potentially poses a threat to the safety and environmental security of the residents because the building's capability will decrease in strength that affects the building's reliability. Another risk arises because the sanctions given for the negligence of periodic inspections on the building's reliability in the process of extending SLF are only in the form of administrative sanctions, so more severe sanctions such as criminal sanctions need to be imposed on violators.

Characteristics study of concrete strength using periwinkle seashell as cement partial replacement

Due to global population growth and improving economic conditions, infrastructure development in the form of residential homes and commercial structures is increasing yearly. The rising real estate market draws middle-class buyers to upscale apartments and opulent homes at steep discounts. On the other hand the availability of traditional construction materials are reducing. As a result, the idea of partial replacement is a good substitute. The current effort attempts to substitute periwinkle shells gathered from Chennai, the coastal metropolis, for traditional coarse aggregate. Through the compaction factor, slump cone, and flow tests in the fresh condition and the 14-day and 28-day compression tests, flexure tests, and split tension tests in the hardened state, an effort is made to assess the workability and strength of the partially replaced concrete in the laboratory. In addition to the aforementioned, tests are done on the periwinkle shell's influence value, breaking down value, specific gravity, absorption of water, and particle size distribution in order to evaluate the properties with those of conventional coarse aggregate in order to confirm the effectiveness of the former. A notional percentage is deduced through comparison analysis after partial replacement of periwinkle shells with gravel in various percentages of 0%, 20%, 30%, and 40% is carried out. This study reveals an understanding of the characteristics of building materials mixed with periwinkle shells and helps todetermine the ideal combined mixture percentage which can be recommended as an appropriate replacement construction material in the construction of elegant villas and luxury apartments.

Analisis Komparatif Daya Dukung Tanah & Penurunan Pondasi Menggunakan Metode Analitis Dan Metode Elemen Hingga (Studi Kasus : Borehole 1 Proyek Apartment Mega Techno City Di Kota Batam)

Batam City is a city with high attractiveness for tourists, both local and foreign tourists. In an effort to support and accommodate tourists visiting the city of Batam, the construction of hotels and apartments has been intensively carried out. Due to limited land, the high rise building model is one of the most effective building models to build. To guarantee high rise building performance, it is necessary to plan well in design from a structural point of view. In this case foundation as one of the elements of the structure is also an important part, so it needs to be planned well too. The bearingXcapacity of theXfoundation and the settlement in the foundation areXtwo important things that need to beXconsidered in foundation planning. In this study, an analysis of the bearing capacity of the foundation using the Meyerhof method and the finite elementXmethod (Plaxis 2D) and foundation settlement analysis using the elastic reduction method and the finite elementXmethod (Plaxis 2D) was carried out on the Mega Techno City Apartment construction project in Batam. The results of this analysis are in the form of bearing capacity based on the Meyerhof method is 3.330,8 kN and 3.351,6 kN based on the finite element method, as for the settlement, 53,1 mm is obtained for the elastic settlement method and 9,64 mm for the finite element method, the settlement still meets the SNI 8640 – 2017 standard. Based on these external differences, it can be used as a reference in conservative design.

Factors Affecting Variation Orders in the Construction Project of Antasari Place Jakarta Apartment

A Variation Order is a modification of the contract content that has been agreed at the pre-implementation stage. Variation Order often occurs in a construction project and has the possibility to have a positive or negative impact on the project implementation time. In the implementation of the Antasari Place Jakarta apartment construction project, there are 22 site instructions as an order for Variation Order work. In identifying factors affecting the Variation Order in this study, a questionnaire that has been validated by experts was used. This study identified 21 factors from the aspects of construction, administration, parties involved, and others that affect the Variation Order on the Antasari Place Jakarta Apartment construction project, with the most dominant factor affecting the Variation Order is the addition of work scope. Ranking of the most dominant factors using the Relative Importance Index (RII) method and ranked three factors with the highest RII values, namely due to the addition of the scope of work with an RII score of 0.900, design changes from planning with an RII score of 0.680, and changes in the scope of work at the construction implementation stage with an RII score of 0.620. The Variation Order work in the Antasari Place Jakarta Apartment construction project has no impact on the final completion time of the project contract because the project implementation has not entered the critical trajectory of the implementation time and is carried out during slack time.

심리적 요인이 지역별 주택가격에 미치는 영향

In order to examine the influence of consumer sentiment on housing prices by region, this study conducted an empirical analysis using the VARX model, including apartment sales price index, consumer sentiment index, apartment construction permit performance, corporate bond yield rate, and consumer price index. As a result of the VARX model estimation, the change rate of the housing consumer sentiment index has a significant positive (+) effect on the change rate of apartment sales prices, the change rate of the corporate bond yield has a negative (-), and the change rate of the consumer price index has a positive (+) effect in all regions. Looking at the coefficient values, it was found that consumer sentiment, corporate bond yield, and consumer price index had a greater impact on the rate of change in apartment sales prices in Seoul than in other regions. As a result of the impulse response analysis, the change rate of apartment sales price showed a positive (+) response to the shock of the change rate of housing consumption sentiment in all regions. The change rate of apartment sales price showed a weakly negative (-) response to the shock of the apartment construction permit performance in Seoul, was converged with a positive (+) response in nationwide and in non-metropolitan areas. It was found that the impact of the change rate of housing consumption sentiment in Seoul has a greater impact on the change rate of apartment sales prices than in other regions.

Identifying Critical Factors and Trends Leading to Fatal Accidents in Small-Scale Construction Sites in Korea

Small-scale construction sites in South Korea account for about 91.5% of all construction workplaces and contribute to 72.3% of the total accidents and fatalities. Safety measures at these sites are often underestimated, and proper safety education is lacking. In particular, the fatality rate is about 4.43 times higher compared to medium-/large-scale construction sites. In this study, a systematic analysis was conducted to examine the causes and trends of industrial accidents in small-scale construction sites to address these issues. This study analyzed industrial accidents in small-scale construction sites using statistical analysis, LDA topic modeling, and network analysis based on data from the Korea Occupational Safety and Health Agency (KOSHA) from 2018 to 2022. The analysis revealed that the most critical cause of accidents in small-scale construction sites is ‘Scaffolding and working platforms’, with accidents primarily involving ‘Fall’. Furthermore, various risk factors and accident trends were identified in apartment construction, new building projects, and mobile scaffolding usage. This study systematically analyzed the causes and trends of industrial accidents at small-scale construction sites, providing important evidence to enhance safety management and preventive measures. The results are expected to play a crucial role in establishing a safety culture at construction sites and ensuring the wellbeing of construction workers.

Pengaruh Reward Kerja, Stres Kerja, Motivasi Kerja, dan Kepuasan Kerja terhadap Loyalitas Karyawan Divisi Marketing pada PT Pilar Bangun Kencana Surabaya


 The development and competition of the property business are getting tighter because the construction of apartments is more than housing. The employee loyalty factor is crucial for the continuity and success of the company in the long term. Factors influencing it are needed to achieve high employee loyalty, such as work rewards, work stress, motivation, and job satisfaction. This study aims to determine the influence of Work Reward, Work Stress, Work Motivation, and Job Satisfaction on Employee Loyalty in the marketing division of PT Pilar BangunKencana Surabaya. This type of research is quantitative research, while the population in this study were all employees of PT Pilar BangunKencana, totalling 83 people, and the sample of this study was 47 marketing division people with sampling techniques, purposive sampling. Data analysis was performed using the IBM SPSS 24 program. The results of this study, it is concluded that Work Reward, Job Stress, Work Motivation, and Job Satisfaction simultaneously have a significant effect on Employee Loyalty with a sig value of 004<0.05 and F-count>Ftable (4.513>2.59). Work Reward partially has no significant impact on Employee Loyalty with a sig value of 0.674>0.05 and t-count<t-table (0.423<2.018). Job Stress partially has a negative and significant effect on Employee Loyalty with a sig value of 0.011<0.05 and t-count>t-table -2.647>-2.018. Work Motivation partially has no significant impact on Employee Loyalty with a sig value of 0.074<0.05 and t-count>t-table 1.833>2.018. Job Satisfaction partially has a positive and significant effect on Employee Loyalty with a sig value of 0.043<0.05 and t-count>t-table 2.085>2.018.
 Keywords: Work Reward, Work Stress, Work Motivation, Job Satisfaction, Employee Loyalty