Tower Building Research Articles

Environmental Impact Assessment in Construction Activities for Da-hab Tower Building Mogadishu

The degree of knowledge and understanding of construction stakeholders, particularly pro-ject managers, about the environmental impacts of construction processes has to be improved because construction is one of the major causes of environmental pollution worldwide. This study aims to assess the most common environmental impacts of the DahabTower building project in Mogadishu. To achieve this objective, this study’s evaluation of the project’s impact has used a checklist matrix. Environmental risks were discovered to be present in the project, including waste generation (municipal, construction, and demolition wastes); changes in the characteristics of the soil; and the emission of air pollutants, among others. These risks are similar to those that are present in the majority of infrastructure and construction projects. Through the suggested mitigation strategies, these risks may be effectively controlled and monitored through preferred mitigation steps.

METHODOLOGICAL APPROACHES TO THE ASSESSMENT OF THE TOURIST AND RECREATIONAL POTENTIAL OF A REGION (A CASE OF THE CHECHEN REPUBLIC)

The purpose of the study is a comparative analysis of approaches and methods for assessing the tourist and recreational potential of a region. The information base was the work of domestic and foreign researchers, data from the Federal State Statistics Service, the Federal Agency for Tourism, the Ministry of the Chechen Republic for Tourism; Ministries of Culture, Red Book of the Chechen Republic. Methods of comparative analysis, content analysis, computation and scoring were used. Currently, there are many concepts, approaches and methods for assessing potential, among which qualitative and quantitative methods dominate. Assessment of tourist and recreational potential based on indicators characterizing the natural, recreational, cultural, historical and infrastructure potential on the example of the Chechen Republic revealed territorial differentiation in the context of administrative districts. The maximum values of the integral potential (18 scores) were obtained for the highland Itum-Kalinskiy district, where there is high biodiversity, relatively intact natural landscapes and many objects of historical and cultural heritage. The group with smaller potential values included the lowland Groznenskiy (11) and mountain Vedenskiy (13) and Shatoyskiy (11) districts. Grozny district is included due to the provision of a hotel fund, and mountainous areas - significant biodiversity, the presence of residential and military tower buildings of the Middle Ages. The Naursky, Nadterechny, Nozhai-Yurtovsky and Kurchaloy districts are less significant for recreation and tourism due to insignificant biodiversity and low infrastructure potential. The assessment of the tourist and recreational potential, taking into account regional specifics, revealed favorable prerequisites for the development of a wide variety of types of tourism in the Chechen Republic - from sports and recreation to gastronomic. In order to form a high-quality tourist product in the region, systematic work is needed to identify the recreational needs of the population, to assess tourist and recreational resources and the state of infrastructure, to introduce innovations.

An Assessment of the Relation between Architectural and Structural Systems in the Design of Tall Buildings in Turkey

Many professionals from several disciplines need to cooperate in designing and constructing tall buildings since their design and construction require more complex systems and technologies in terms of structure, installation, facade, vertical circulation and fire systems compared to low-rise buildings. The architects who design tall buildings have to know the architectural and structural design considerations of tall buildings and their interrelations well. This study is expected to reveal the status of tall buildings completed in Turkey and help designers understand architectural forms, floor plans, core planning and structural systems of tall buildings. For this purpose, the factors affecting architectural and structural design were examined, and the relation between the architectural–structural system was revealed for tall buildings completed in Turkey. In order to study architectural and structural considerations, 230 constructed tall buildings in Turkey were selected and analyzed in detail. According to the results of the study, it is seen that the prismatic form is widely used as the building tower form in Turkey, the shear-frame system as the structural system, the residential function as the building function, the single symmetrical central core as the building core, and the rectangular plan as the building floor plan alike.

Study on Empirical Formulas and Distribution Ranges of Vibration Periods in High-Rise Reinforced Concrete Constructions

ABSTRACT China is now undergoing the largest and fastest urbanization process in the world, developing various reinforced concrete high-rise buildings during this process. Most high-rise structures are constructed in densely populated and economically active areas and earthquakes pose a potential possibility of serious economic loss and casualties, which cannot be ignored. This paper conducts on-site dynamic tests on 129 high-rise RC buildings in eastern China by utilizing ambient vibration measurement. Fundamental vibration periods, second vibration periods, and third vibration periods are statistically analyzed in translational directions based on two high-rise building types: shear wall slab building and shear wall tower building (including framed shear wall structures and framed tube structures). After fully considering building usage conditions and comparing the fitting formulas in existing codes, fitting empirical formulas of the vibration periods in two translational directions based on the above structural types are given. The ratio distribution ranges of vibration periods are calculated by utilizing the vertex displacement method, concentrated mass method, and Rayleigh-Ritz energy method. In addition, by analyzing the vibration period ratio in horizontal directions of 543 high-rise RC buildings, different ranges are distinguished as well as suggested boundaries are given. The conclusion of this paper provides a reference and convenient method for future on-site dynamic testing and a new proposal is provided to the empirical formula of vibration period in the current building seismic design code.

The Tower Building Task: A Behavioral Tool to Evaluate Recreational Risk-Taking.

Risk-taking is a fundamental aspect of life spanning diverse contexts. Despite many tests being readily available, the behavioral assessment of risk propensity in recreational contexts, where decisions are not necessarily motivated by monetary gains or losses, is not well represented. As the tower building task (TBT) shares features of recreational activities, we evaluated whether it could assess risk-taking in this type of scenario. In the TBT, participants use standard-size wooden blocks to build the tallest tower they can within a 10 min period. In the current study we (i) examined methodological modifications to the task to either promote or reduce risky behavior and (ii) tested possible associations between the TBT scores and those of two commonly used risk-taking evaluations: The Balloon Analogue Risk Task (BART) and the Sensation Seeking Scale (SSS). We found that limiting the number of permitted collapses decreased the willingness to take risks, whereas challenging participants to exceed a “record” height increased risk-taking. TBT scores of one of the conditions correlated with scores of the BART and the SSS, particularly with the subscale addressing recreational activities. These findings suggest that the TBT offers a potentially useful means of evaluating risk-taking behaviors akin to those of the recreational domain.

Drum Tower‐Inspired Kirigami Structures for Rapid Fabrication of Multifunctional Shape‐Memory Smart Devices with Complex and Rigid 3D Geometry in a Two‐Stage Photopolymer

AbstractMechanically robust shape‐morphing materials that can transform from miniaturization into complex structures are highly desirable for real‐world device applications. However, fabricating mechanically robust yet geometrically complex 3D shape‐morphing structures with excellent functionality and high load‐bearing capacity remains a challenge. Inspired by drum tower buildings, a simple, rapid, and universal method is presented for fabricating multifunctional shape‐memory smart devices with complex and rigid 3D kirigami geometry in the two‐stage epoxy‐amine‐acrylate photopolymer systems. In the first‐stage reaction, transparent polymer films with a Tg of 29–49 °C are obtained by the epoxy‐amine chemistry. The shape‐memory programming process allows the first‐stage film with a drum tower‐inspired 2D kirigami pattern to be manipulated into an unsupported 3D structure. In the second‐stage reaction, UV‐induced free‐radical polymerization of methacrylate groups in the first‐stage network is employed to rapidly lock the programmed 3D kirigami structure with a Tg of 66–138 °C. The drum tower‐inspired 3D kirigami structure withstands 1000 times its own weight. The shape memory fluorescent 3D device and shape memory electronic 3D device are engineered by combining the two‐stage photopolymer system and a 3D kirigami structure. This work represents a versatile method to create multifunctional shape‐memory devices with rigid 3D geometry for potential applications.

International Heritage Listing: A Case Study on The Sultan Abdul Aziz Shah (SAAS) Tower

The aims of this paper are to elaborate the information about the background and history of the Sultan Abdul Aziz Shah (SAAS) Tower building, the architect that design the building, the architectural value of the building, building construction, function and history of the establishment of UiTM. The Sultan Abdul Aziz Shah Tower was chosen as case study to make it nominated in heritage listing. In Julai 2019, Imej & Identiti Korporat Committee of UiTM have proposed a few buildings in UiTM Shah Alam to be gazette. The problem is they have not prepared yet any criteria for listing. So this research is to get and identify significant criteria that suitable for this building to be listing as heritage where its mapping with the criteria that stated by National Heritage Department.

OVERVIEW OF THE STRENGTH OF THE FLOOR SLAB STRUCTURE WITH THE SAP 2000 APPLICATION

In the Construction Work of the Kendari Mayor's Office Tower Building Where In Its Implementation There Are Many Work Items, One of which is Floor Plate Work. Where the Floor Plate is One of the Structural Components in building construction that has a role in a construction, especially building. In Planning The Floor Plate Is Planned To Have A Thickness Of 12 Cm And Use Bondelk Material ( Stell Deck ) And Wiremesh Which The Use Of This Material Is Chosen Because In The Implementation Process It Is Considered Faster And More Efficient. In the Floor Plate Planning Process, Softwere Auxiliary Structure is Used to Facilitate the Structure of the Floor Plate Which Is Ideal For Use In Construction. The purpose of this study is to be able to know and compare from two methods of planning the structure of the floor plate.namely, the calculation method manually or with the calculation method with the help of softewe strutkur, namely Sap 2000 and can find out from the two methods which method is more efficient in planning and can also describe the comparative results of the use of the two methods with the aim of determining the appropriate method for planning In the Field And Can To Do Floor Plate Structure Calculations, Especially Either With Manual Methods Or With The Help Of Softwere Structures. Keywords : Floor Plate, Stell Deck, Wiremesh, Sap 2000

Solar exoskeletons – An integrated building system combining solar gain control with structural efficiency

We propose the use of solar exoskeletons, an integrated building system that combines material efficiency in structural load transfer with passive solar gain control. This offers an impactful way to respond to the UN climate goals, as the architecture and engineering disciplines face the challenge of delivering low carbon buildings. While reducing operational and embodied emissions is often considered independently, we can show how approaching them in tandem, through a novel building system, can offer significant savings. With large spans for maximum spatial flexibility and full glazing maximizing daylight, high-rise buildings are often suboptimal in terms of their material usage from steel frame construction and cooling demand from uncontrolled solar gains. We view solar exoskeletons as a sustainable pathway for future high-rise structures – combining solar gain control through external shading with a highly efficient structural system optimized for lateral loads in tall buildings. We present an automated workflow that combines parametric modeling of architectural elements and structural simulation with Radiance-based annual radiation simulations and an operational energy model in EnergyPlus. Evaluating embodied carbon and energy use intensity of midrise and tower buildings in timber and steel, we compare hundreds of iterations for a prototypical building in Phoenix, USA. Our results show that exoskeletons can lead to embodied and operational carbon reductions in the lateral load-resisting structural system of 37–80% and 24–48%, respectively, vis-à-vis conventional construction techniques. Adding photovoltaic modules to the external shading system can lead to net zero building solutions for the buildings investigated in this case study.

A “belfry-typed” narrow-band tunable perfect absorber based on graphene and the application potential research

In this work, the overall structure of the proposed “belfry-typed” absorber sensor is composed of four layers, from bottom to top are Si substrate, Au layer, SiO2 dielectric layer and the top “belfry-typed” graphene layer, respectively. Among them, the design of the “bell tower” pattern is inspired by the common bell tower building in daily life. Compared with the previous absorber based on frequency superposition method, the patterned graphene structure greatly simplifies the actual processing steps. By using FDTD to simulation, it is found that the structure has two perfect resonance absorption modes with absorption rates of 99.92% and 99.88% at 7578 nm and 8635 nm. Considering that the special surface plasmon tunability of graphene, the two-mode regulation can be achieved by controlling Fermi energy, relaxation times and structural geometry parameters. Moreover, the refractive index sensitivity of the device was discussed. The three basic parameters evaluating the performance of sensor are 1477.5 nm/RIU of sensitivity, 25.47 of FOM and 123.4 of quality factor. Finally, the specific circumstance of the absorber applied in actual life such as in aqueous solution, 10%, 20%, 25%, 60% glucose solution and 30%, 50% sugar solution was simulated and discussed. These results suggest that the proposed absorber has high refractive index sensitivity and high response speed, with which the absorber has high application value in photoelectric detection, switching and imaging.

Investigating Energy Use in a City District in Nordic Climate Using Energy Signature

This paper focuses on multi-family buildings in a Swedish city district, erected between 1965 and 1973, which are now in need of renovation. For the two types of multi-family buildings in the district, tower buildings and low-rise buildings, dynamic energy use is predicted by using an energy signature method. The energy signature is then used to calculate the primary energy use number of the building stock, according to calculations methods dictated by Swedish building regulations. These regulations are also used to assess which multi-family buildings are in need of renovation, based on the buildings’ primary energy use. For buildings that need energy renovations, it is simulated so that the energy use of each multi-family building complies with these same building regulations. The proposed methodology for simulating energy renovation also determines new energy signature parameters, related to building heat loss coefficient, balance temperature and domestic hot water usage. The effects of simulated renovation are displayed in a duration diagram, revealing how a large-scale renovation affects the district’s heat load in different annual periods, which affects the local district heating system. Sensitivity analysis is also performed before and after simulated energy renovation.

Effects of Bottom-Overhead Design Variables on Pedestrian-Level Thermal Comfort during Summertime in Different High-Rise Residential Buildings: A Case Study in Chongqing, China

The design of bottom-overhead (or lift-up) buildings is advantageous in improving the thermal environment of high-density cities and enhancing the comfort level of occupants’ activity space on the ground floor. This study aims to investigate the impact of multiple architectural design variables on the ground floor overhead area of slab-like and tower high-rise residential buildings from the perspective of pedestrian-level thermal comfort with ENVI-met simulations and Standard Effective Temperature (SET*) evaluation. The design variables of the 25 tested models include the number of continuously arranged buildings, aspect ratio, overhead form, overhead space height, positions of overhead space enclosures, and openness degree, derived from existing overhead buildings in Chongqing. The results demonstrate that when the number of continuously arranged buildings and the aspect ratio increase, the overhead area has a more comfortable environmental state, while the overhead height is negatively correlated. In addition, when the enclosures are on opposite sides and their openness degree is 0.75–0.5, the area tends to be more comfortable. For slab-like buildings, the thermal comfort of the partial-overhead form is the worst while the semi-overhead form is relatively better. However, the overhead form has no significant impact on the thermal comfort of tower buildings. These findings can provide some suggestions and inspiration for the design of overhead buildings to create a more sustainable and livable microenvironment.

Mitigation of wind induced accelerations in tall modular buildings

This paper compares two methods of mitigating wind induced vibrations in tall modular buildings. Tall buildings experience wind induced motion which can result in serviceability and habitability issues associated with occupant discomfort. Modular construction, in which volumetric modules are assembled around a reinforced concrete core, can be particularly susceptible to wind induced accelerations due to the tall slender form of the core and the small and uncertain contribution of the modules to global lateral stiffness and damping. This study analyses the acceleration response of modular buildings. Broadly speaking, for this form of construction, two approaches exist to mitigate excessive vibrations; increasing core dimensions or the addition of auxiliary damping. This study evaluates these two approaches for a large number of archetype modular structures in order to investigate which method is more effective. Of more than 6000 archetypes studied, it was found that over 40% required vibration control measures to meet ISO acceleration limits. Installing a Tuned Liquid Damper (TLD) proved significantly more efficient than increasing RC core dimensions; a 1% increase in damping achieves a similar level of acceleration reduction to approximately a 2100 mm increase in core breadth and depth. The estimated level of auxiliary damping available from a TLD is sufficient to control accelerations for the majority of archetypes considered. A method for developing curves defining the maximum feasible height of a modular building based on its dimensions and the provision of an optimum TLD is also developed. The results show that modular buildings can be used as a viable form of construction for high-rise buildings and quantify the extent to which the maximum heights of modular tower buildings can be increased using existing vibration control technologies.

Sustainable Architectural Design of the Residential Compound Towers in Aleppo City Using the Genetic Algorithm

This research aims to find innovative design solution to create sustainable compound residential towers in Aleppo city, for the reconstruction phase, by using the concept of sustainability and benefiting from natural energy sources. International organizations and many countries are interested in applying sustainable architecture standards, reducing emissions, mitigating pollution, and reducing long- term operating costs for buildings by making the most of natural resources. Tower buildings are among the most important design models that have been subject to the concepts of sustainability and their applications, due to their consumption of large amounts of energy. This research presents a study of a sustainable design for a residential compound tower, for the reconstruction phase in Aleppo city, using the genetic algorithm within the Grasshopper program. The tower design Idea depends on developing and linking the basic design idea of ​​the project with main design determinants such as dimensions, heights and other variables, including location and climatic characteristics, and then creating a barometric chart for these connections within the Grasshopper program. This chart links to the Galapagos tool, which is responsible for running the genetic algorithm. The random structure is generated when the algorithm started, and as a result of the cross- breeding, more advanced generations are created. The process continues to reach the most appropriate environmentally sustainable form to reduce the heat load acquired in summer. The model is evaluated environmentally using Ladybug simulation software, to provide solutions for modular residential towers that fit the local environment of Aleppo city. The results of the research showed that the solar heat load was reduced by adopting the genetic algorithm to find the most suitable configuration for the tower. The amount of reduction is 35% between the initial solutions and the final approved solution. The research also revealed that the use of green roofs reduces the heat load by 20%. The research also showed the effect of using shading facades. On the southern, western and eastern directions, the heat gain was reduced by 5%.

Deformation and damage to buildings caused by ground movements in mining areas (case study)

Human activity causes transformations in the near-surface layers of the rock mass, which result in long-term impacts on buildings and engineering infrastructure. Mining activities are particularly disadvantageous in this context, as they trigger severe deformation processes that reach the soil surface as a result of the excavation of deposits. The prevention of accidents and disasters caused by these impacts is based on knowledge derived from observation. Therefore, the aim of this study was to acquire and update knowledge on the impact of mining-related ground deformation and tremors on buildings. The paper presents the results of measurements carried out on a group of buildings located in an underground mining area. The buildings have been affected by mining impacts since their construction in the 1980s. Despite the implementation of appropriate structural protection, the structures have been suffering deformation and damage. For the purposes of the study, two two-axis inclinometers were installed on the 15.2 m high bell tower, taking measurements at 6-hour intervals. Over a period of 10 months, changes in the leaning of the tower were measured and the condition of the other buildings observed.The study resulted in obtaining:
 
 values for the change in tilt of the two perpendicular walls of the tower (over a period of 10 months),
 correlation of the results with tremors measurements and periodic surveying measurements of the inclination of the vertical edge of the tower,
 image of damage to buildings caused by mining deformation of the ground.
 
 On the basis of an analysis of the location and timing of minefields excavation, the occurrence of real ground movement in the mining areas, continuing even after the end of mining works, was confirmed and irregular deformation of the originally perpendicular walls of the masonry tower building was demonstrated. The tower did not behave as a rigid body; its horizontal profile was deformed.

PENGARUH PENGAWASAN, KOMUNIKASI DAN KOMPETENSI TERHADAP KINERJA PEGAWAI SUB BIDANG PENGAWASAN BARANG DI DISPERINDAG PROVINSI RIAU

This research was conducted at the Division of Goods Department of Industry and Trade of the Province of Riau, Lancang Kuning Tower Building, 5th Floor, Jalan Sudirman No. 460, Pekanbaru, Riau Province. Purpose and benefits of this research is Knowing Effect Control, Communications and Performance Against Employee Competency sub field supervision Disperindag goods in Riau province in the future.
 Data collection techniques used in this research is to use the data collection tool in the form of questionnaires and interviews, and the sampling method used by the census techniques / saturation sampling that samples drawn based on population as a whole. So the sample in this study were as many as 85 employees. The data analysis used is multiple linear regression analysis with the help of SPSS software vers. 17. Besides, do also partial test (t test).
 From the results of research on the influence of Control, Communication and Competence can improve the performance of Goods Sub-Sector Employees In Riau Province Disperindag Variable Control (X1) obtained t amounted to 11 508 greater than ttable is 1.662. This means that the independent variable (Supervision) can explain the dependent variable (performance) and there is significant independent variable on the dependent variable being tested at 61.6%. Communication variables (X2) obtained t amounted to 4,790 bigger than t table is 1.662. This means that the independent variable (Communications) can explain the dependent variable (performance) and there is significant independent variable on the dependent variable being tested at 25.3%. Variable Competence (X3) obtained t for 4390 is greater than ttable is 1.662. This means that the independent variable (Competence) can explain the dependent variable (performance) and there is significant independent variable on the dependent variable being tested at 22.2%. hypothesis test result shows that the Fhitung greater than Ftable is 370 632> 2.72, meaning that proved the regression model used successfully explain the influence of independent variables (X1, X2 and X3) together significantly on the dependent variable (Y). The influence of the dependent variable can be seen from the coefficient of determination (R square), the amount is 0932 That is 93.2% while the remaining 6.8% is influenced by other variables not examined in this study.
 
 Keywords: Control, Communication, Competence, Performance.

Jumping Towards the Future

Between the late nineteenth and the mid-twentieth century numerous ski-jumping towers were built all across Sweden. This accumulation of large, monumental sporting facilities occurred even though ski jumping never attracted large numbers of practitioners. The building of such towers in the southern and central parts of Sweden, where snowy winters are far from guaranteed, is of particular interest. Today, most of the ski-jumping towers in the southern half of Sweden have been torn down, but they have left a hidden and forgotten material heritage. This paper examines the abandoned places of ski jumping, where fragmented material remains give witness to a phenomenon that once was of central importance in shaping and expressing ideals and social identities in the modernization of Sweden. The ski jumps became arenas for a new and spectacular sport that drew large crowds, but they also became landmarks and monuments of progress and prosperity in the new modern age.

Integration of Natural and Artificial Light on Energy Efficiency of the Mega Bank Makassar Tower Building

One of the largest energy consumers in the world is buildings. The energy consumption comes from the lighting system. Energy use in
 buildings is generally 25% for lighting systems. The strategy used in building design is to reduce energy consumption while maintaining the
 best comfort in a building. The application of energy-saving concepts from the building sector is optimizing the lighting system by integrating
 natural and artificial lighting systems. This study aims to determine the light intensity in the integrated lighting system of natural and artificial
 manually and also to find out how much energy can be saved with the integrated lighting system manually. The research location is at the
 Mega Bank Makassar Tower Building. The research sample was selected by purposive sampling and the sixth floor was chosen as the
 research location. In this study, simulations were carried out using the DIAlux 4.13 program to integrate natural and artificial light and to
 calculate the amount of energy efficiency in the workspace. To obtain optimal light intensity and energy savings, a simulation was carried
 out by turning off half the light points in the workspace, especially the light points around the building openings. The simulation results show
 that the average integrated lighting quality meets the minimum lighting requirements and can save energy usage by up to 50%.
 Keywords: energy efficiency; integration lighting; workspace

Cooperation in sound and motion: Complexity matching in collaborative interaction.

Complex behaviors are layered with processes across timescales that must be coordinated with each other to accomplish cooperative goals. Complexity matching is the coordination of nested layers of behaviors across individuals. We hypothesize that complexity matching extends across individuals and their respective layers of processes when cooperating in joint tasks. We measured coordination in a joint tower building task through the layers of sound and movement patterns produced by partners and found that partners built higher towers when their sound patterns fell into more similar relations with each other across timescales, as measured by complexity matching. Our findings shed light on the function of complexity matching and lead to new hypotheses about multiscale coordination and communication. We discuss how complexity matching encompasses flexible and complementary dynamics between partners that support complex acts of human coordination. (PsycInfo Database Record (c) 2021 APA, all rights reserved).

Child maltreatment and parent-offspring interaction: A multigenerational extended family design.

In the current study, the associations between multiple types of child maltreatment (CM), parent-offspring interactions, and family cohesion were examined in an extended family study. A total of 366 parent-offspring pairs from 137 nuclear families participated. Parents (Mage = 52.8 years, age range: 26.6-88.4 years, 57% female) reported about perpetrated CM and offspring (Mage = 25.7 years, range: 7.5-65.5 years, 58% female) about experienced CM during their childhood. Parent-offspring interactions were observed during a conflict interaction task. Cohesion within the nuclear family was observed during a playful tower building task. Results showed that parents and offspring displayed more aversive behavior in parent-offspring dyads characterized by higher levels of child abuse, but not in dyads characterized by higher levels of child neglect. In addition, less dyadic affective similarity was observed in parent-offspring dyads characterized by higher levels of child neglect, whereas dyadic affective similarity was higher in dyads characterized by higher levels of child abuse. Findings imply that interventions focused on parent-offspring interactions with a somewhat different content for neglectful and abusive families may be efficacious for families in the child welfare system. (PsycInfo Database Record (c) 2021 APA, all rights reserved).