Change in Adaptability of Residential Architecture: Spatial Analysis on Traditional and Contemporary Houses of Bangladesh

This study focused on spatial analysis to identify the changes inadaptability over the last five decades. The features influencing adaptabilitywere selected from the reference study. An appropriate method was used toanalyse these features through spatial analysis. Six distinctive typologiesof rural houses were selected from six regions. Unlike the traditionalhouses, the contemporary houses in the same area reflected a differentcharacter. Urban houses built since the early and mid-20th century werecompared with contemporary houses. After analysing the openness,generality, flexibility, depth, typicality, construction technique, involvementof end-users, and the feedback from the inhabitants, the study identified asignificant decrease in contemporary houses' adaptability. Spatial analysiswas used to quantify the different features and comparison betweentraditional and contemporary houses. Though the adaptability had beenreduced over time, the latest houses started to achieve better flexibility insome features due to government policy and implementation of statutorybuilding regulations. Further recommendations were provided to enhancethe residential architecture's adaptability in future. The study samples wereselected from different regions of Bangladesh. Still, the result and policyrecommendations can be helpful for other countries, especially with highpopulation density and a developing economy.

Thermal Impacts of the Internal Courtyards in Compound Houses: The Case of Tamale Metropolis

The research seeks to understand the effects of internal courtyards onthermal comfort conditions in compound houses in Ghana’s TamaleMetropolitan area. Internal courtyards are an integral part of the design ofcompound houses in this location.Their inclusion in building designs is largely as a point of domestic activitysuch as cooking and cleaning and also for social interaction. However, a lotof interchanges in thermal conditions between structures and the outdoorstake place within these internal courtyards. Various design details of thebuilding will engender different thermal responses of the internal courtyard.This paper assesses thermal comfort in compound houses as againstbungalow type houses in the Tamale Metropolis, Ghana by the applicationof the Predicted Percentage of Dissatisfied Persons (PPD) and PredictedMean Votes (PMV) model. This prototype compares with the InternationalStandards Organization (ISO) 7730 and American Society of Heating,Refrigeration and Air-Conditioning Engineers (ASHRAE) Standard 55(estimated values between 23˚C - 26˚C seen as the allowable temperatures).Ambient indoor conditions (dry bulb temperature and relative humidity)of five (5) buildings each from the two building typologies from wererecorded over a period of ten calendar months. These ambient conditionswere analyzed, consequently generating the Predicted Percentage ofDissatisfied Persons (PPD) and Predicted Mean Votes (PMV) recordings.The investigations uncovered relatively high PPD - PMV recordingsrelating to the Bungalow type buildings while the compound housesattune to the comfort zone. The Actual Mean Votes (AMV) of residentssuggests the two building typologies are all rated comfortable however; thecompound houses are rated above the bungalow type houses.

Mastering the Production of Electric Vehicles as One of the Modern Instruments for the Development of the Iranian Automotive Industry

The article analyzes the problems of introducing electric vehicles, as wellas their difference from cars with internal combustion engines. This type oftransport has long been included in our everyday life. Today, in the era ofthe heyday of technology, a person understands that cars with an internalcombustion engine (ICE) are almost on the edge of their existence. Atpresent, the development of the production of electric vehicles should beconsidered as a promising direction of the Iranian automobile industry. Atthe moment, this market in Iran is not yet occupied by foreign companies,and therefore national companies have a chance to use the strategy of“growth together with the market”.

Integrated Water Resource Management and Climate Change

The documentation of local progress assistances from climate change qualification is a likely inspiring feature to attain this. But, there is a deficiency of applied instances of how climate change qualification and progress priorities can be combined in general development procedures, chiefly in low- and internal-profits nations. Evolving information-based and practical climate change strategies requires creating science-policy lines through which information makers and politicians unite. Present investigation discloses that co-creation-depend lines conquered neither by information creators nor politicians prosper in enabling the alteration of information into policy. Amphibious vehicle is chiefly defenseless to climate changes that are predictable to source environment destruction and damage and, eventually, resident excisions. But, little is recognized about how the collaboration amongst climate change and destruction may delay the ability of amphibians to adjust to climate change.

Strength & Conduct of Reinforced Concrete Corner Joint under Negative Moment Effect

The aim of our study is to reveal the effect of steel reinforcement details,tensile steel reinforcement ratio, compressed reinforcing steel ratio,reinforcing steel size, corner joint shape on the strength of reinforcedconcrete Fc' and delve into it for the most accurate details and concreteconnections about the behavior and resistance of the corner joint ofreinforced concrete, Depending on the available studies and sources inaddition to our study, we concluded that each of these effects had a clearrole in the behavior and resistance of the corner joint of reinforced concreteunder the influence of the negative moment and yield stress. A studyof the types of faults that can be reinforced angle joints obtains detailsand conditions of crushing that are almost identical for all types of steelreinforcement details and the basic requirements for the acceptable behaviorof reinforced concrete joints in the installations and the efficiency of thejoint and this may help us to prepare for disasters, whether natural or other,as happens with tremors The floor and failure that may occur due to wrongdesigns or old buildings and the possibility of using those connections totreat those joints and sections in reinforced or unarmed concrete facilitiesto preserve the safety of humans and buildings from sudden disasters andreduce and reduce risks, as well as qualitative control over the productionof concrete connections and sections free from defects to the extreme.

Impact of Compaction Mode on Strength Properties of Sustainable Asphalt Concrete

Various modes of compacting the asphalt concrete mixture can createmechanically different behaviour of the prepared specimens and can alterits sustainability. An attempt has been made in the present assessment toprepare asphalt concrete specimens by implementation of three modesof compaction, the gyratory, the roller, and the Marshall hammer. Thespecimens were prepared at the target bulk density of Marshall methodat optimum asphalt content. Extra specimens were prepared at 0.5 %asphalt below and above the optimum. Core specimens have been obtainedfrom the roller compacted slab samples. The specimens were tested forthe Marshall stiffness, tensile, and shear strength. It was observed that atoptimum asphalt content, the indirect tensile strength declines by (18.8and 70.5) % for gyratory and roller compacted specimens respectively ascompared with hammer compacted specimens. At optimum asphalt content,the shear strength declines by (70.5 and 82.2) % while Marshall stiffnessdeclines by (10.2 and 44.8) % for hammer and roller compacted specimensas compared with that of gyratory compacted specimen. Specimensprepared by gyratory compaction are less susceptible to the change inthe testing temperature as compared with other modes of compaction. Itis recommended to consider the mode of compaction to suit the requireddesign property of sustainable asphalt concrete mixture.

Assessing the Impact of the Lead/Lag Times on the Project Duration Estimates in Highway Construction

The literature mentions multiple factors that can affect the accuracy of estimating the project duration in highway construction, such as weather, location, and soil conditions. However, there are other factors that have not been explored, yet they can have significant impact on the accuracy of the project time estimate. Recently, TxDOT raised a concern regarding the importance of the proper estimating of the lead/lag times in project schedules. These lead/lag times are often determined based on the engineer’s experience. However, inaccurate estimates of the lead/lag time can result in unrealistic project durations. In order to investigate this claim, the study utilizes four time sensitivity measures (TSM), namely the Criticality Index (CI), Significance Index (SI), Cruciality Index (CRI), and the Schedule Sensitivity Index (SSI) to statistically analyze and draw conclusions regarding the impact of the lead/lag time estimates on the total duration in highway projects. An Excel-based scheduling software was developed with Monte Carlo simulation capabilities to calculate these TSM. The results from this paper show that the variability of some lead/lag times can significantly impact the accuracy of the estimated total project duration. It was concluded that the current practices used for estimating the lead/lag times are insufficient. As such, it is recommended to utilize more robust methods, such as the time sensitivity measures, to accurately estimate the lead/lad times in the projects scheduled.

Irregularities and Roughness

The periodically repeated pavement irregularities and their effect on the dynamic behavior of a bridge are the subject of this paper, as well as a new point of view of how the surface roughness operates on vehicles. The authors observed that the models used so far accept that the wheels are always in contact with the roughness curve. But in reality the wheels only come in contact with the peaks of the roughness curve by applying impact forces. The theoretical formulation is based on a continuous approach that has been used in literature to analyze such bridge. The procedure is carried out by the modal superposition method, while the obtained equations are solved by using Duhamel’s integrals. Important conclusions for structural design purposes can be drawn through a variety of numerical examples.

Building Pattern Technique of an Indigenous Community – Does Its Appearances a Distinctive Representation?

Bangladesh is enriched with beautiful traditional indigenous cultures. Different indigenous peoples with their distinctive existences also considerably create an enhance values and lifestyles to the socio-cultural sectors of Bangladesh [1]. Habitually, these indigenous communities have been comparable to live a large combined family to shear their lifestyles [2]. Presently the country has 45 indigenous communities who are living in different locations. All indigenous people within this country have their own style to build their settlements with special techniques to keep them safe and sound from all types of natural and environmental vulnerabilities and also enhance their knowledge of construction techniques and lifestyle. Rakhain is one of them with very small number of people are still living in different regions within the country which have their own system of building techniques. Study found that for several hundreds of years Rakhains are strictly following their indigenous prescription of house and settlement pattern. Although like other indigenous people of this country, they have mountains of problems, such as forced land occupation, lack of security and minority characteristics. Above all, forced political separation has gradually drowned them in the abysmal pit of marginal destiny. This has turned them into exiles in their own land. As a result, many of them are being forced to leave the country and as a result they misplaced their native knowledge and technique to construct. Thus, this study will initially focus on to search for the distinctiveness of their settlement pattern and building construction techniques and lifestyle. Again, in view of their problems, knowledge and experiences concerning archetype, built and house pattern, this study will finally explain how Rakhains accumulate their every distinctiveness from history and for present and future invention.

Influence of Waterside Buildings’ Layout on Wind Environment and the Relation with Design Based on a Case Study of the She Kou Residential District

It is important to improve residential thermal comfort in the high dense cities, in which wind environment is crucial. Waterside buildings take an advantage of micro-hydrological-climate in summer that should be used to enhance residential thermal comfort especially in the subtropical region. In order to propose design approaches according to the outdoor thermal comfort of the waterside residential, a case study of Shenzhen She Kou residential district has been made. It focused on various factors that could have influence on wind environment for improving thermal comfort. Using wind velocity ratio (ΔRi) criterion, factors of building development volume, building direction and layout pattern, open space arrangement etc. have been broadly explored using FLUENT simulation. To planning parameters, the Floor Area Ratio (FAR) is significantly influence wind environment, the smaller FAR is better. To the vertical layout of the buildings, multi-storey layout and multi-storey & sub high-rise mixed layout would provide better wind environment. To the horizontal layout, the determinant is better than the peripheral. Other factors such as the buildings’ direction towards the road, buildings’ height, and open space setting, have influence on wind environment yet. In general, the more benefit of design layout for wind breezing, the better wind environment it could get