Wide-span Buildings Research Articles

Penerapan Arsitektur Tradisional Bali pada Perancangan Teater Kesenian Kontemporer di Badung

<p><em><span lang="EN-US">Bali is a gathering of tourist who come from all over the country. Because of this, a mixture of cultures emerged on the island ranging from lifestyles such as clothing, language, food to architecture, so that over time Balinese architecture became faded. To prevent this, it is necessary to preserve traditional Balinese architecture by applying traditional forms of architecture to new buildings, especially the theater (as buildings that become icons of Balinese culture). The theory chosen was traditional Balinese architecture, contemporary theater provisions and neo-vernacular architecture. The method used to trace the case is descriptive qualitative by taking important aspects in neo-vernacular architecture as a meeting point between traditional Balinese architecture and neo-vernacular, then these aspects are used as a benchmark in the design transformation from what was originally a small span building to a wide span with a theater function. The study results obtained are guidelines and examples of the application of Asta Kosala-kosali in contemporary theater on spatial, roof, body and foot structures of Balinese architecture and the combination of Balinese architectural tectonics in contemporary art theater. This journal has a high urgency because at present there are many functions that require wide-span buildings, so that Balinese architecture can be applied to buildings without eliminating the culture or noble values in it.</span></em></p>

Characteristics of Petung Bamboo as the Main Structure of Wide Span Bamboo Hall Building at Gubukklakah, Poncokusumo, Malang

Dendrocalamus asper, or commonly known as “petung bamboo”, is one of the local bamboo varieties that has a thick and wide stem perimeter. Based on its characteristics, petung bamboo has always been the ultimate choice to be utilized as the primary structure of bamboo buildings from a small span building until a wide span building. Nevertheless, there is limited access to the literature which studies the petung bamboo as the primary structure of wide span buildings. This problem had gained our attention to conduct examination and further study. The examination andanalysis of petung bamboo as the primary structure in Gubukklakah Hall building is crucial, due to the structural material recommendation for the architectural design in the future. This study was focusing on the examination of petung bamboo’s characteristics as the primary structure of wide span buildings. There are several methods used in this study such as the qualitative method, literature studies, and case studies. Three important aspects will be discussed in the petung bamboo as the primary structure of the wide span building study framework: characteristics, strength,and on-site application. Hopefully, the study framework can give a positive contribution to Indonesian architecture development in terms of analytical data and documentation from petung bamboo as the primary structure in the Bamboo Hall Building.

Thermal comfort mapping on Pasar Gedhe Hardjonegoro to obtain passive cooling strategy in warm humid tropics

Sustainability energy in tropical climates based on passive cooling refers to a thin and slender shape building as the design strategy to obtain comfortable conditions inside the building. Therefore, thermal comfort problem would arise on a wide building with overcrowded people such as market building like Pasar Gedhe Hardjonegoro. The aim of this study is to examine the factors that influence the thermal comfort of a wide span building using passive cooling design. The tenants as the subject of this research are the main indicator in which the thermal comfort study of a building could be determined. The result of field studies indicates that there is a relation between the user’s thermal comfort with the different location in the building. Study showed that thermal comfort is influenced by the function of circulation.

PENGARUH ELEMEN DESAIN BANGUNAN TERHADAP PERFORMA PENCAHAYAAN ALAMI PADA LAPANGAN BULUTANGKIS INDOOR BUMI PANCASONA KBP BANDUNG

Abstrak- Desain lubang cahaya yang baik pada bangunan bisa dilakukan untuk memaksimalkan potensi pencahayaan alami pada negara tropis. Bangunan olahraga bulutangkis merupakan salah satu fungsi bangunan bentang lebar yang sensitif terhadap pencahayaan alami dan membutuhkan teknik khusus dalam memasukan cahaya alami ke dalamnya karena bentangnya yang lebar. Terdapat tiga aspek kenyamanan visual yang harus dipenuhi oleh desain pencahayaan pada bangunan olahraga bulu tangkis yaitu daylight factor 2%, persebaran illuminasi dan efek silau. Ketiga aspek kenyamanan visual tersebut akan menjadi titik berangkat penelitian ini sebagai variabel penelitian.Penelitian ini bertujuan untuk mengetahui pengaruh elemen desain terhadap performa pencahayaan alami pada objek studi Bumi Pancasona sport center dengan cara eksplorasi elemen desain. Penelitian dilakukan dengan cara mengevaluasi performa objek studi, dan menganalisa pengaruh elemen tapak dan bangunan terhadap performa pencahayaan alami pada bangunan. Dari evaluasi performa pencahayaan alami pada objek studi, akan diketahui elemen desain yang paling berpengaruh terhadap pencahayaan alami pada lapangan bulutangkis. Elemen desain yang berpotensi meningkatkan performa pencahayaan alami pada objek studi akan di eksplorasi. Eksplorasi dilakukan dengan simulasi program komputer Velux untuk menciptakan keadaan terkontrol.Berdasarkan hasil evaluasi, objek studi belum mencapai standar kenyamanan visual yang berlaku dengan nilai daylight factor 0.1%, persebaran illuminasi yang kurang merata, dan tidak terjadi silau. Elemen desain yang berpotensi meningkatkan kenyamanan visual pada bangunan adalah posisi jaring pada interior bangunan, luas bukaan dan posisi bukaan pada bangunan, tiga elemen tersebut akan dieksplorasi lebih lanjut sebagai upaya meningkatkan kenyamanan visual. Hasil eksplorasi yang memberikan nilai paling mendekati standar adalah eksplorasi desain jenis saw tooth, dengan nilai daylight factor 1.1%, persebaran illuminasi paling merata di antara semua eksplorasi dan tidak terjadi silau pada lapangan sepanjang tahun. Berdasarkan hasil eksplorasi, setiap elemen desain yang di eksplorasi akan meningkatkan performa pencahayaan alami yang berbeda tergantung kebutuhan pada bangunan dan aktivitas ruang.sarana yang ada.

Development of sustainable building components utilizing date palm midribs for light wide-span multi-purpose structures for rural communities in Egypt

Date palm midribs are one of the most available and renewable agricultural residues in Egypt. They enjoy a technical heritage that still thrives in the fields of handicrafts, furniture and simple rural huts among the poor rural communities in Egypt. This qualifies them to be developed for contemporary construction that matches the modern lifestyle of the youth. This paper aims to develop low-cost date palm midribs building components for light and sustainable wide-span multi-purpose structures for rural communities. This is achieved firstly by selecting a primary design that respects the natural shape and lightness of the material. The primary design selected was a 12 m span tri-arched space truss system as a semi-form active structure that utilized traditional palm midribs crates techniques such as bundling and friction-based joinery. Secondly, the conceptual design was developed in order to enhance the design ability for mass production, stability, and aesthetic enhancement. Thirdly, an exploratory physical model was built to visualize and develop the practical design of the building components. This process simulated the building sequence and tackled the details of the building components. The physical model showed that the proposed system allowed multiple alterations and high flexibility, showed promising durability and well balanced visual composition with a unique spatial experience that reflect the traditional essence of the material in a modern fashion. The work presented is a part of the undergoing validation process of date palm midribs wide-span building components, to introduce the material a sustainable alternative for the poor rural communities in Egypt.

Atrium Form and Thermal Performance of Middle-Rise Wide Span Building in Tropics

Energy use of a building usually increases as long as an increase of the surface area of the envelope. Heat transfer of the building through the envelope can be reduced by perfect design. Right building form and materials can reduce the heat transfer. Middle rise building has a quite high surface area of the roof, and in a tropical country, roof accepts the highest irradiance thus bring much heat to the building. In the same volume, compact building form is better in thermal performance, but large building usually need an atrium to help the natural lighting in the room. The atrium uses transparent roof or skylight. This transparent roof definitely can increase the heat gain to the building significantly. So this research aims to find the best form of atrium roof in middle-rise and large span building in the tropical region. This research aims to analyse the thermal performance of middle-rise and large span buildings and its relation to the form of the atrium. A sample of middle-rise office buildings in Surabaya was taken randomly. The simulation was conducted to predict thermal and cooling energy performance. Energy performance of the building was found to bear some relations to form of roof.

PERENCANAAN KONSTRUKSI BANGUNAN ATAP LAPANGAN OLAHRAGA UNIVERSITAS BANGKA BELITUNG MENGGUNAKAN STRUKTUR BUSUR

Wide span building is kind of building that need large space without any poles in the centre. Roof building construction is wide span structure that overshadow footsal, basketball and volley field in Bangka Belitung University. Arc structure become one of construction structures that often used in wide span buildings. In this planning, steel constructions using LRFD method. The result from this planning is dimention of gording using canal profil type 150.75.6.5.10 with quality of steel is BJ41. For trekstang/sargod using plain steel with diameter mm. Portal rafter using round profil PSB 10 inch diameter and coloumn using WF profil 458.417.30.50 with quality of steel is BJ41. Base plate dimentions is (600x600) mm with 32 mm thick for 16 bolts with inch diameter and 10 mm endplate for 6 high quality bolts type A490 with mm diameter. Dimentions of pedestal coloumn is (1400x1400) mm, 1400 mm high with 40 25-100 main reincforcement and 13-400 crossbar with fc’ 25 Mpa, fy 400 MPa. Dimentions of footplate pondations is (2100x2100)mm with 600 mm thick, pondations reinforcement using plain steel diameter and stek reinforcement using 16D29 with fc’=25 Mpa, fy=400 Mpa.

Verification of second-order effects in slender reinforced masonry walls

Previous experimental and numerical works have demonstrated the effectiveness of reinforced masonry (RM) walls in tall single-storey wide-span buildings. Nevertheless, to date, EN1996 does not have a consistent approach to checking the second-order effects due to out-of-plane loads in such structures, and requirements for RM walls are too restrictive. New fibre models have been calibrated on the basis of the above tests and used to carry out parametric pushover analyses to study the influence of wall slenderness, roof vertical load and the percentage of vertical reinforcement on the out-of-plane behaviour of tall RM walls. In this numerical study, new slenderness limits for the safe use of this construction technology are defined, above which second-order moments must be calculated or failures due to instability become predominant, overcoming the shortcomings of current standards. This work also proposes and calibrates some rational approaches for evaluating second-order effects in tall RM walls, based on model column (MC) and nominal curvature (NC) methods. The reliability of the two simplified design methods is checked against the results of the above numerical models. MC method provides the best results, without limitations on the type of failure of the section (i.e. ‘balanced’, as for NC method), with errors usually lower than 25% and always conservative.

MEASUREMENT OF THE NATURAL FREQUENCY AND DEFLECTION OF THE WIDESPAN-FLOOR SYSTEM DUE TO DYNAMIC LIVE LOAD

Study on the natural frequency of a floor-structural system is a key parameter to determinehow the floor system will respond to forces causing vibrations. Measurement of frequency and displacementof the floor system was the focus of this research. The main objective of this investigation is to develop aboundary of the natural frequency of the floor system for the widespan building. The observation wasconducted for two different human activity that is walking (during graduation ceremony) and dancing (duringlive music). The results of the study shows that the frequency of floor system due to human walking activitywas measured between 3.54 to 5.32, while, rhythmic dance and jumping activity yields the frequencybetween 4.17 to 5.08 Hz. At the range of the measured frequency, the human walking induced maximumdeflection of the floor about 1.76 to 7.81 mm. The deflection is double about 15.36 to 33.18 mm when 30 to35 peoples were dancing/jumping in unison in response to live music.

STUDI REDUKSI BUNYI PADA MATERIAL INSULASI ATAP ZINCALUME

Sound Reduction Study of Insulator of Zinc-alume Metal-roofing. Metal roofing is a common upper-structure of wide-span building. The metal material usually used as roof covering is zinc-alume; which has better performance in strength, easy-construction and its durability than other metal material. Although it has good structural performance, its performance as a sound reduction to reduce noise to the room beneath still need to be studied further. Therefore this research aimed to study how zinc-alume and its insulator perform through air-borne noise, besides structure-borne/impact noise. Insulator has been studied here are the Orca-zinc coating, glasswool, rockwool and styrofoam. The measurement done in a reverberation chamber, with pink noise source in 125 Hz- 4000 Hz frequency.

Investigation of Load-Transfer Mechanisms in Geotechnical Earth Structures with Thin Fill Platforms Reinforced by Rigid Inclusions

The reinforcement of soft soils by rigid inclusions is a practical and economical technique for wide-span buildings and the foundations of embankments. This method consists of placing a granular layer at the top of the network of piles to reduce vertical load on the supporting soil and vertical settlement of the upper structure. The study focuses on the modeling of load-transfer mechanisms occurring in the reinforced structure located over the network of piles with a coupling between the finite-element method (geosynthetic sheets) and discrete element method (granular layer; concrete slab in some cases). The importance of granular layer thickness to increase load-transfer intensity and to reduce vertical settlement was observed. However, without a basal geosynthetic sheet, the compressibility of soft soil has a great influence on the mechanisms. A method predicting the intensity of load transfers was proposed, based on Carlsson’s solution. The main parameters concerned are the geometry of the work and the peak and residual friction angles of the granular layer.