Multi-storey Residential Buildings Research Articles

THE PROCEDURE FOR INSTALLING SECURE AND EFFICIENT STUTTERS

This paper introduces a novel conceptualization of the chimney in a heating boiler for multi-storey residential buildings. It also examines the safety and efficiency aspects associated with the utilization of these chimneys in high-rise apartments

RECONSTRUCTION OF HEATING SYSTEMS IN RESIDENTIAL BUILDINGS WHILE MAINTAINING EXISTING HEAT SOURCES

The purpose of the article is to substantiate the need for real reconstruction of single-pipe vertical centralized heating systems, which are operated in most multi-story residential buildings in Ukraine, into apartment horizontal systems. The paper presents the main design shortcomings of heating systems in residential buildings built in the second half of the 20th century. The feasibility of using horizontal apartment systems is substantiated. For the first time, the heating system was reconstructed during the heating season without displacing residents and without stopping the existing heating system. A technical solution is proposed for supplying heat to apartments from an existing individual heating station with an elevator without its reconstruction. The article presents the results of a number of studies aimed at improving the heating system and determining the indicators of its economic and energy efficiency. Installation work can be carried out selectively in any number of apartments, and "old" and "new" heating systems can operate in parallel. The methodology for the reconstruction of heating systems presented in this paper can be used in the process of post-war restoration of the destroyed infrastructure of the housing stock of Ukraine. Modernizing in-building systems while maintaining the existing heat source is much cheaper than decentralizing heat supply by installing independent heating systems with a gas boiler in each apartment. The main conclusions of the article include that the reconstruction of existing heating systems is an objective necessity, without which the subscriber's influence on his heat consumption is impossible. The modernization described in this article is dictated by all the regulatory deadlines for major repairs of heating systems, which in most cases are more than twice as long.

Multiscale spatiotemporal characterisation of embodied environmental performance of building structures in Geneva from 1850 to 2018

Load-bearing systems in buildings, significant in material use and embodied greenhouse gas emissions (EGHGE), have lacked detailed analysis on their environmental and functional relationships over time and space. This study evaluates the environmental impacts of building structures in Geneva, Switzerland, considering factors like material usage, EGHGE, and urban development. A new method using a similarity-weighted function projects environmental impacts onto a GIS-based building stock, analysing 48 archetypal and 84,477 stock buildings built from 1850 to 2018. Results show a 37% reduction in structural volume per floor area and a 10% increase in mass over time. Buildings predating the masonry-to-concrete transition would produce 7% more EGHGE if constructed today. Multi-residential buildings emit 14% less EGHGE than single homes. A new indicator amortizes upfront environmental effects over a building's lifespan, aiding in historical comparisons of building stocks. This approach underscores the need for spatial-temporal environmental impact mapping to understand sustainable urban development dynamics.

ANALYSIS OF DESIGN AND CONSTRUCTION PRACTICE MASS HOUSING

The article reveals the basics of the formation of residential buildings of mass industrial construction. Design and construction practice and typological features of residential buildings are analyzed. Proposals for the reconstruction and reconstruction of mass housing in Ukraine are being considered. The organization of housing with the use of promising architectural and structural systems and the formation of housing complexes is revealed. Modern trends in the architectural design of multi-story residential buildings are considered, and proposals for the complex formation of housing with targeted development of residential structures are provided.

A Residential Building Extension Prototype to face Post-Pandemic Needs: Foreseen Challenges and Impacts

The COVID-19 pandemic highlighted the importance of outdoor spaces for maintaining physical and mental well-being. However, many urban residents lack private outdoor areas, which led to harmful health consequences during lockdowns. The research project aims to address and solve this issue by developing a physical/digital prototype called “X-TEND” that extends living space outdoors by attaching it to existing multi-story residential building facades. This prototype intends to promote healthier lifestyles, improving the well-being of individuals and positively impacts the urban surroundings aesthetics. X-TEND prototype uses a light, modular, and prefabricated approach for cost-effectiveness and environmental sustainability. It incorporates generative processes for structural and bioclimatic optimisation complemented by green building strategies to reduce environmental impact while maximising thermal and energy performance. Ultimately, X-TEND prototype contributes to a more sustainable built environment, fostering healthier and more liveable cities for current and future generations.

CONCEPTS FOR TIMBER-SPECIFIC MEP INSTALLATIONS AND SEALINGS IN BATHROOMS OF MULTI-STORY RESIDENTIAL BUILDINGS

The European market for cross-laminated timber (CLT) is rapidly growing in the field of multi-story residential buildings. However, water leaks repeatedly lead to severe moisture damage in timber buildings. Undetected moisture damage may result in biological degradation of the CLT structure, is difficult to repair, and incurs high costs. Currently, there is a lack of awareness of the fact that timber buildings require different mechanical, electrical and plumbing (MEP) installation methods than buildings made with mineral construction materials. In addition, too little attention is given to protecting the wooden structure by applying appropriate sealing measures that actually work in practice. Lack of planning and uncoordinated construction work exacerbate this problem. Presenting 2D drawings and 3D BIM models, the paper illustrates concepts that can be used to optimally design and safely integrate MEP installations in bathrooms in multi-story residential timber buildings. A special focus is placed on a holistic view of the topics structure, pipe installation, sealing, and fire protection. The concepts presented are based on an analysis and classification of over 1100 bathroom layouts. Therefore, they are applicable to a wide range of bathrooms in practice. The presented results were developed in the research project CLT_Plumbing_Design. They contribute to the development of standardized, timber-specific solutions for pipe installation and sealing in bathrooms, and can help reduce moisture damage in timber construction. In addition, these concepts form a basis for a new automated planning process in the area of bathroom planning, for which a brief outlook is given.

A BIM-based Tool for Embodied Carbon Assessment using a Construction Classification System

Life Cycle Assessment (LCA) is widely accepted for evaluating a building's environmental footprint. Building Information Modelling (BIM) has become the go-to strategy for LCA during design. Still, despite BIM-LCA automating detailed quantity extraction, challenges persist, such as a lack of standardised geometry modelling and information management and a common language between LCA and BIM data.This study proposes a method to assess embodied carbon from BIM models classified using a construction classification system that provides a data structure, maps BIM objects and environmental impacts in LCA databases and matches different levels of development (LoD) in BIM models. The method was tested on real-world models, resulting in 375 kgCO2e/m2 for the single residential and 426 kgCO2e/m2 for the multi-residential building. These findings revealed its ability to adapt to different LoD and modelling techniques, expedite assessing different design options, and potentially save up to 20 hours of work remodelling.

Optimizing Foundations: The Case for Slab Selection in Multi-Story Residential Buildings

This study investigates the optimal foundation design for multi-story residential buildings through a comparative analysis of two foundation variants under specific geological conditions. Employing the finite element method via SCAD software, we assessed the structural integrity and load-bearing capacities of the foundation options. Material consumption was quantified for each variant, and the consistency of settling calculations for the slab foundation was evaluated. The results indicated that the slab foundation not only minimizes material usage but also simplifies design complexity according to normative standards. Based on technical and economic assessments, the slab foundation is recommended as the most cost-effective and structurally efficient option for such construction projects. This research provides a pivotal foundation design perspective that could influence future architectural and engineering practices in residential building construction.
 Highlights:
 
 SCAD software validates foundation integrity via finite element analysis.
 Slab foundations offer superior cost and material efficiency.
 Simplifies design, enhancing construction process efficiency.
 
 Keywords: Structural Integrity, Slab Foundation, Reinforcement, Monolith, Building

Design and Analysis of Multi-storey (G+6) Residential Building using Staad pro And AutoCad

The design and analysis of multi-storey residential buildings play a crucial role in ensuring structural integrity, safety, and efficiency in urban infrastructure The present project deals with the design & analysis of a multi storied residential building of G+6 consisting of 4 apartments in each floor. Load analysis forms a critical component of the design process, as it involves determining the magnitude and distribution of various loads acting on the building, including dead loads, live loads, wind loads, and seismic loads. STAAD Pro facilitates the application of these loads and provides robust analysis tools to assess their effects on the structure, ensuring compliance with relevant building codes and standards. The dead load &live loads are applied and the design for beams, columns, footing is obtained STAAD Pro We conclude that staad pro is a very powerful tool which can save much time and is very accurate in Designs. Thus, it is concluded that staad pro package is suitable for the design of a multi-storeyed building Staad pro Analysis include Creating a plan for structural framework Obtaining amodel Structure analysis Structure design

Comparative Study of Static and Dynamic Analysis of Multistoried Building

In a moderate seismic activity, relying solely on the static force method to estimate the seismic force assessing the vulnerability and behaviour of RCC buildings under seismic loads is insufficient. The seismic response of the building system is highly influenced by the analysis method adopted. In the past years, static approaches were preferred due to their simplicity, although these methods provided safe design, they may have been overly cautious. Dynamic analysis, on the other hand, is a fundamental aspect of structural mechanics, that describes and predicts the behaviour of structures subjected to dynamic loads. Dynamic load includes wind, imposed load, earthquake, etc. Dynamic analysis techniques, such as modal analysis, time history analysis, and dynamic displacement analysis. RCC structures are mainly designed to resist static load. This process of ignoring dynamic events sometimes becomes the cause of disasters, especially in the case of earthquakes. This research paper provides information on the comparison of various parameters in static and dynamic analysis. Two RCC multistoried residential buildings (g+10 and g+25) acting on seismic zone IV are analyzed using the static analysis method and response spectrum method with ETABS 16. The research investigates the effect on various structural parameters such as story displacement, story drift, and support reactions. The results are compared and evaluated to assess the performance of the response spectrum method over the static analysis method.

Statistical characteristics and scenario analysis of embodied carbon emissions of multi-story residential buildings in China

Residential buildings are major contributors to carbon emissions from the building and construction industry. Although previous studies have comprehensively investigated the methods for embodied carbon assessment and proposed measures for carbon reduction, it remains challenging to screen the features and influencing factors of embodied carbon intensities from a statistical perspective. This study explored the characteristics of embodied carbon emissions based on 438 multi-story residential building samples. The influences of building features, such as the number of floors, number of basements, structural form, seismic design requirement, delivery type, and building area, were analyzed using clustering and significance tests. The average embodied carbon intensity was evaluated as 467.6 kg CO2e/m2 and relevant coefficient of variation was approximately 20 %. Further discussion on building material weight, cost, and embodied carbon intensities indicated that a simplified system boundary considering 95 % thresholds of both weight and cost can provide satisfactory results for embodied carbon assessment with relative errors below 3 %. Moreover, three linear models were proposed for predicting embodied carbon intensities. The results showed that the carbon intensities can be predicted based on five types of primary materials with good accuracy. The proposed system boundary, predictive models, and identified characteristics have practical applications for assessing, estimating, and reducing embodied carbon. Accordingly, it is possible to facilitate low-carbon design of multi-story residential buildings.

Seismic Performance Evaluation of Multi-Storey Residential Building with Friction Pendulum Bearings: Indonesia case study

The methodology for seismic performance evaluation of a residential building in Indonesia with the use of seismic isolation is considered. An 8-storey reinforced concrete frame residential building with shear wall structural system was selected as a case study. Nonlinear methods of seismic response analysis were used to calculate the response of the structure: nonlinear static (Pushover) and Nonlinear-Time History Analysis, NLTHA. The analysis is performed in STERA 3D freeware. The nonlinear time history analysis was performed for seven pairs of horizontal components of earthquake ground motions, selected according to the parameters of possible earthquakes for the considered site (Bandung city). The selected earthquake records were modified using the spectral matching procedure for design spectrum. Friction-pendulum bearings developed by Nippon Steel Corporation of Japan were used as seismic isolation. The results of nonlinear time history analysis show that shallow earthquakes result in greater damage compared to megathrust earthquakes, with both scenarios providing a life safety (LS) performance level. The use of seismic isolation can reduce seismic loads, as evidenced by the reduction in top-level accelerations and shear forces at the base.

Modelling of a Tubular Conveyor for Waste Collection and Sorting in Multi-Storey Residential Buildings

Modelling of a Tubular Conveyor for Waste Collection and Sorting in Multi-Storey Residential Buildings

Circular building adaptability in multi-residential buildings – the status quo and a conceptual design framework

PurposeThere is a renowned interest in adaptability as an important principle for achieving circularity in the built environment. Circular building adaptability (CBA) could enable long-term building utilisation and flexible use of space with limited material flows. This paper identifies and analyses design strategies facilitating CBA to propose a framework for enhancing the implementation of the concept.Design/methodology/approachInterviews were conducted with professionals experienced in circular building design to explore the questions “How do currently applied design strategies enable CBA?” and “How can CBA be implemented through a conceptual design framework?”. The interviews encircled multi-residential building examples to identify currently applied circular design strategies. The interviews were analysed through qualitative content analysis using CBA determinants as a coding framework.FindingsThe results show that all ten CBA determinants are supported by design strategies applied in current circular building design. However, some determinants are more supported than others, and design strategies are often employed without explicitly considering adaptability. The design strategies that enable adaptability offer long-term solutions requiring large-scale modifications rather than facilitating low-impact adaptation by dwelling occupants. The proposed conceptual design framework could aid architects in resolving these issues and implementing CBA in their circular building design.Originality/valueThis paper’s contribution to CBA is threefold. It demonstrates design strategies facilitating CBA, proposes a conceptual design framework to apply the concept and identifies the need for a more comprehensive application of available adaptability strategies.

Field thermovision study of externsl enclosure for multi-storey residential building under climatic conditions of Northern Kazakhstan

An in-place thermovision study was carried out in a multi-apartment apartment building of high comfort in a cold period of the year, located in the Northern part of the Republic of Kazakhstan in the work. The study result showed the presence of significant problems on thermal protection at the edge and inner corner fences where the temperature difference between the inner surface of an enclosure and the internal temperature was 6.4 - 19.4ºC. An analysis of thermograms of window joints in living rooms also showed a significant temperature drop from -9.3ºC to 18ºC, where total vulnerable area was up to 10%. Thermograms of window-sill joints of living rooms also showed a temperature drop to -21.1 ºC with an area of 15.7 %. The temperature on a reinforced concrete column’s inner surface showed a value of 6.5 ºC, which is typical for an area of 34.8 %. An analysis of outside and inside temperatures showed that as the temperature drops from -7 ºC to -23 ºC during the day, the inside temperature of the room remains relatively stable at 25.3 - 26.1 ºC, although there are problems with the thermal protection of the enclosures, which indicates overconsumption of heat energy. Moreover, the internal air temperature exceeds the permissible temperature for living rooms by 1.3 - 2.6 ºС. An analysis of air humidity also showed unsatisfactory values, which during the day varied from 17.4% to 21.2%. The deviations identified during the survey indicate the presence of problems on thermal protection of external enclosures, which require additional surveys aimed at further development and optimization of external enclosure designs to obtain optimal values in the issue of energy saving, considering the climatic characteristics of the Kazakhstan regions.

Stress-strain state during the formation of normal cracks in three-layer bendable reinforced concrete elements under the action of longitudinal and transverse forces

Most wall panels in operating multi-storey residential buildings are in a complex stress-strain state under the influence of vertical and horizontal loads, such as their own weight, wind, etc. These features must be taken into account in the calculation in order to ensure operational safety. The combination of vertical and horizontal forces acting simultaneously for three-layer bending elements leads to the fact that the boundary between the compressed and tensile zones not only moves from one layer to another, but also has a different geometric shape depending on the ratio between the vertical and horizontal load. The stress-strain state during the formation of normal cracks in three-layer bendable reinforced concrete elements is caused by the impact on layers of different concretes. The formation of normal cracks occurs due to the achievement of ultimate tensile strength by the most stretched concrete under the influence of external loads. Since three-layer reinforced concrete elements consist of two outer layers (reinforced concrete) and a middle layer (lightweight concrete), when such an element bends, the outer layers are subject to compression, and the middle layer is subject to tension. The boundary of the compressed zone can be located either in one of the outer layers or intersect the middle layer, which falls into both the compressed and stretched zones. To analyze the stress-strain state during the formation of normal cracks, it is necessary to take into account the fol-lowing parameters: geometric characteristics of the element (dimensions and shape of the section, layer thickness, etc.), physical and mechanical properties of concrete (compressive and tensile strength, elastic modulus, Poisson's ratio, crack resistance coefficient, etc.), characteristics of reinforcement (class, diameter, pitch of bars, etc.) and its location in the section.

ПРИЧИНЫ ПОВРЕЖДЕНИЙ БАЛКОННЫХ ПЛИТ ЖИЛЫХ ДОМОВ

The main cause of defects and damage to balcony plates can be considered the so-called temporary factor, which has a far from positive effect on the general state of the structure - the impact of atmospheric-sphere precipitation, strong temperature differences. In addition to the temporary factor, the destruction of the balcony slab can be influenced by mistakes made during installation, no drains and overstrain of the balcony slab due to excessive load on it, which causes the formation of cracks. The basis for the survey was the check of the technical condition of the balcony slabs of a three-story multi-storey brick residential building in order to determine the degree of wear, possible defects and assess the possibility of further operation of the slab. A structural solution analysis was carried out to assess the technical condition of the building structures. Loads acting on the structures, impacts and operating conditions, the quality of structures, materials and connections were established. This also took into account factors such as the geometric dimensions of structures and their sections; presence of cracks, splits and destruction; condition of protective coatings; broken adhesion of reinforcement to concrete; presence of reinforcement rupture; condition of anchoring of longitudinal and transverse reinforcement; degree of corrosion of concrete and reinforcement. As a result of visual and measuring control, defects and damages having the requirements of operation and leading to a malfunction of the structure were revealed. The results set forth in the article may be of interest to specialists of expert organizations who are engaged in the examination of residential apartment buildings in order to assess the actual state of bearing structures, in particular balcony slabs

Institutional co-production at neighbourhood scale: Cases of urban renewal for Shanghai’s ageing population

Urban renewal projects at neighbourhood scale have become prevalent in China to better adapt multi-storey residential buildings for the needs of the country’s ageing society. Institutional co-production and actor-network theory were employed in two cases in Shanghai to analyse relationships between administrative departments, policy implementors, and residents. The findings show that while institutional co-production promoted substantial spatial change for elderly residents, and stimulated both administrative change and bottom-up initiatives. However the need for the state to provide a bottom line for more vulnerable actors was highlighted, an over-representation of dominant actors and uneven information assembly in the process also resulted in unequal distributions of benefits among actors. The study contributes empirical insight to research on institutional co-production in governance contexts with powerful state authority, as well as the role of neighbourhood-level actor’s in urban renewal processes in other cities defined by high-density, vertical construction.

How to walk to reduce footstep noise in multi-story residential buildings

Loud footsteps from upstairs cause disturbance to downstairs neighbours in multi-story residential buildings. In this experiment, we examined how participants walk when asked to walk quietly and evaluated the efficiency of their quiet walking patterns. Changes in vertical impact loading rates during the early stance phase, walking speed, and lower limb muscle activity when asked to walk quietly were evaluated from twenty-six young participants. Study data show that participants who struck the ground with the rearfoot reduced the impact loading rate by 44.6% with 29.3% slower walking speed than normal walking. Those who struck with the fore- or mid-foot reduced the impact loading by 69.2% with a 23.4% decrease in speed. Quiet walking with the non-rearfoot strike pattern reduced the impact loading by 48.7%, even when asked to walk as fast as normal walking. The results support the non-rearfoot strike pattern as an efficient walking strategy for lowering footstep impact. Practitioner summary: Data of this study show that voluntary gait alteration, such as adopting a non-rearfoot strike pattern, can reduce footstep impact. The study results propose that implementing such changes could be beneficial in addressing floor noise issues of multi-story residential buildings. Abbreviations: RFS: Rearfoot strike; NRFS: non-rearfoot strike; COP: Center of pressure; NW: Normal walking; QWs: Quiet walking at a preferred slower speed; QWn: Quiet walking at the speed of normal walking; EMG: Electromyography; BW: Body weight; iNEMG: integrated normalized EMG.

Çapraz Lamine Ahşap (CLT) Malzemeli Çok Katlı Konut Binasının 6 Şubat 2023 Kahramanmaraş Depremleri Altındaki Sismik Tepkisinin Değerlendirilmesi

The February 6, 2023 Kahramanmaraş earthquakes exposed the vulnerabilities of existing RC structures, causing thousands of buildings to collapse or sustain severe damage, especially in the hardest-hit provinces. Cross-laminated timber (CLT), one of the industrial wood materials, is used as an alternative to RC in buildings in earthquake zones around the world due to its lightness and many positive features. The aim of the study is to examine the dynamic behavior of multi-storey residential buildings built with the CLT shear wall system, with limited application in Turkey, under earthquake loads and to draw attention to the material selection and sizing to be used in the structural elements of earthquake-resistant buildings. Using TimberTech (2022) software, a five-story building with CLT walls was analyzed under linear dynamic conditions. The study shows while the model provides all the verifications in the solution according to Eurocode for soil type C, it is inadequate under the seismic data of the Kahramanmaraş earthquake.