scholarly journals Value Engineering Approach for Construction Materials Selection of Irrigation Drainage

2018 ◽  
Author(s):  
Made Sudiarsa
Keyword(s):  
Construction Materials ◽  
Value Engineering ◽  
Materials Selection ◽  
Engineering Approach ◽  
Irrigation Drainage ◽  
Selection Of

scholarly journals SYSTEM FOR REAL TIME SUPPORT IN CONSTRUCTION MATERIALS SELECTION

2005 ◽  
Vol 9 (2) ◽  
pp. 99-109 ◽  
Author(s):  
Edmundas Kazimieras Zavadskas ◽  
Artūras Kaklauskas ◽  
Audrius Banaitis ◽  
Vaidotas Trinkūnas
Keyword(s):  
Decision Making ◽  
Construction Materials ◽  
Decision Makers ◽  
Financial Resources ◽  
Materials Selection ◽  
Mathematical Methods ◽  
Decision Area ◽  
On Line ◽  
Economic Construction ◽  
Selection Of

The significant part of the constructions’ value consists of construction materials price. With the aim of using financial resources for the construction effectively, it is very important that well considered and reasonable decisions should be made regarding the selection of construction materials. Most of all construction on‐line systems seek to find how to make the most economic construction decisions and essentially these decisions are intended only for economic objectives. Construction alternatives that are under evaluation have to be evaluated not only from the economic position, but also take into consideration qualitative, technical, technological and other characteristics. Additionally, in seeking to facilitate the work of decision‐makers, computer technologies are used that operates according to particular models. These models are based on special mathematical methods in order to facilitate decision‐making and apply to a certain decision area. In this article, the possibilities of applying methods for popular decision‐making are analyzed regarding the selection of construction materials.

Evaluation of a permissible roadbed thawing depth in permafrost

2021 ◽  
Vol 5 ◽  
pp. 18-22
Author(s):  
Alexandr Galkin
Keyword(s):  
Thermal Resistance ◽  
Biot Number ◽  
Seasonal Changes ◽  
Construction Materials ◽  
Thermal Conditions ◽  
Road Base ◽  
Thawing Depth ◽  
Roadway Construction ◽  
Selection Of ◽  
Purpose Of Evaluation

Roadbed thermal conditions in permafrost are subject to seasonal changes affecting roadway resilience. A roadbed thawing depth is important for road base processing, especially in permafrost. This research had the purpose of evaluation of a permissible roadbed thawing depth based on the Biot number reflecting general thermal resistance of roadbed layers. These results will contribute to understanding road bed thermal resistance and selection of roadway construction materials.

scholarly journals SELECTION OF WIRELESS TECHNOLOGY FOR TRACKING CONSTRUCTION MATERIALS USING A FUZZY DECISION MODEL / BELAIDŽIO RYŠIO TECHNOLOGIJŲ ATRANKA STATYBINĖMS MEDŽIAGOMS STEBĖTI, TAIKANT NEAPIBRĖŽTŲJŲ AIBIŲ SPRENDIMO MODELĮ

2012 ◽  
Vol 18 (1) ◽  
pp. 43-59 ◽  
Author(s):  
Shaohua Jiang ◽  
Won-Suk Jang ◽  
Mirosław J. Skibniewski
Keyword(s):  
Decision Making ◽  
Construction Projects ◽  
Large Scale ◽  
Construction Materials ◽  
Point Of View ◽  
Wireless Technologies ◽  
Scope Of Application ◽  
Fuzzy Decision Model ◽  
Specific Technology ◽  
Selection Of

As the size and scale of construction projects increase, inefficiencies related to the manual operations about field data in current tracking systems are becoming an important issue. While emerging wireless technologies are providing a feasible vision of ubiquitous computing and sensor networks applicable to the large-scale construction industry, it has become even harder to select a suitable technology for tracking construction materials because of the differing functionalities, capabilities, and scope of application of the specific technology. This research proposes a multi-criteria decision-making model that leverages the decision process in choosing various wireless technologies available on the market. To justify the selection of a specific technology, a fuzzy method was adopted to provide an appropriate way to decide among five alternatives (e.g., RFID, GPS, Wi-Fi, Zigbee, and UWB). Fuzzy ranking was obtained from the aggregated fuzzy appropriate index (FAI) based on a person's point of view (optimist, pessimist, or neutral). The results showed that Wi-Fi might be a suitable solution for optimists and neutral persons, but UWB might be the better alternative for pessimists. The results of this research may assist construction engineers in applying reasonable decision-making procedures in a fuzzy environment such as construction sites, and rank the relative importance of the various criteria and alternatives specified in this research. Santrauka Augant statybos projektų mastui, rankinis dabartinių stebejimo sistemų duomenų apdorojimo neefektyvumas tampa svarbia problema. Nors naujos belaidžio ryšio technologijos gali sudaryti galimybę įvesti visur prieinamus kompiuterinius ir jutiklių tinklus, naudojamus plataus masto statybos pramonėje, tampa vis sudėtingiau pasirinkti tinkamas technologijas statybinėms medžiagoms stebėti, nes kiekviena technologija atlieka skirtingas funkcijas, skiriasi jų galimybės ir taikymo apimtis. Šiame tyrime siūlomas daugiakriterinis sprendimų priėmimo modelis, kuris, sprendimų priėmimo procesą pasirenkant rinkoje, siūlomas belaidžio ryšio technologijas išskaido į atskirus lygius. Siekiant pagrįsti tam tikros technologijos pasirinkimą, buvo pritaikytas neapibrežtųjų aibių metodas, pasirenkant geriausią technologiją iš penkių alternatyvų (t. y. RFID, GPS, Wi-Fi, Zigbee ir UWB technologijų). Neapibrežtumo rangas buvo gautas taikant agreguotą neapibrežtumo tinkamumo indeksą (FAI), atsižvelgiant į asmens požiūrį (optimistinis, pesimistinis ar neutralus). Gauti rezultatai parodė, kad Wi-Fi technologija yra tinkama optimistams ir neutraliems asmenims, o UWB technologija būtų geresnė alternatyva pesimistams. Šio tyrimo rezultatai gali padėti statybos inžinieriams priimti pagrįstus sprendimus neapibrėžtoje aplinkoje, tokioje kaip statybos aikštelės, ir suranguoti pagal svarbą įvairius kriterijus bei aptartas šiame tyrime alternatyvas.

scholarly journals PENERAPAN METODE VALUE ENGINEERING DALAM PEMILIHAN JENIS BETON PADA PROYEK KONSTRUKSI PERUMAHAN

2021 ◽  
Vol 4 (1) ◽  
pp. 261
Author(s):  
Juan Aditya Kencana ◽  
Mega Waty
Keyword(s):  
Precast Concrete ◽  
Value Engineering ◽  
Affecting Factors ◽  
Conventional Concrete ◽  
Quality Performance ◽  
Housing Projects ◽  
Expert Choice ◽  
Residential Projects ◽  
Selection Of

Value engineering is a technique to provide the necessary functions of a component or product at the lowest cost while meeting the specifications of quality, performance, and reliability. Development in the housing construction sector must be carried out as efficiently as possible by considering various factors. One of the most affecting factors is the selection of concrete types. The research was conducted on one of the housing projects located in Bumi Serpong Damai to know the most important criteria and the best alternative in selecting concrete types for housing projects. The criteria used are price, time, quality, ease of implementation, availability of tools and materials, technology, and concrete bearing capacity. Simultaneously, the alternatives reviewed are conventional concrete, ready mix concrete, and precast concrete. Research data in the form of questionnaires with the Saaty scale is analyzed by value engineering method with the Expert Choice program's help. Based on the analysis results, the most important criteria in selecting concrete types for residential projects are the quality of concrete with an eigen vector value of 31.1% and the best alternative was precast concrete with an eigen vector value of 47.8%.ABSTRAK  Value engineering adalah suatu teknik untuk memberikan fungsi yang diperlukan dari suatu komponen atau produk dengan biaya terendah sekaligus memenuhi spesifikasi kualitas, kinerja, dan keandalan. Pembangunan dibidang konstruksi perumahan dituntut untuk dilaksanakan seefisien mungkin dengan mempertimbangkan berbagai faktor yang ada. Salah satu faktor yang paling mempengaruhi yaitu pemilihan jenis beton. Penelitian dilakukan pada salah satu proyek perumahan yang terletak di Bumi Serpong Damai dengan tujuan mengetahui kriteria terpenting dan alternatif terbaik dalam pemilihan jenis beton untuk proyek perumahan. Kriteria yang digunakan adalah harga, waktu, kualitas, kemudahan pelaksanaan, ketersediaan alat dan material, teknologi, dan daya dukung beton, sedangkan alternatif yang ditinjau adalah beton konvensional, beton ready mix, dan beton pracetak / precast. Data penelitian berupa kuisioner dengan skala Saaty dianalisis dengan metode value engineering dengan bantuan program Expert Choice. Berdasarkan hasil analisis didapati kriteria terpenting dalam pemilihan jenis beton untuk proyek perumahan adalah kualitas beton dengan nilai eigen vector sebesar 31,1% dan alternatif terbaik berupa beton pracetak / precast dengan nilai eigen vector sebesar 47,8%.

scholarly journals Experimental Strength of Earth-Based Construction Materials in Different Regions of China

2019 ◽  
Vol 2019 ◽  
pp. 1-9 ◽  
Author(s):  
Kun Zhang ◽  
Bairu Lu ◽  
Yihong Wang ◽  
Zhijun Lei ◽  
Zhanshen Yang
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Construction Materials ◽  
Earth Construction ◽  
Strength Tests ◽  
The World ◽  
Red Earth ◽  
Material Load ◽  
Earthen Buildings ◽  
Selection Of

According to the latest UN statistics, more than 2 billion people in the world still live in various forms of earthen buildings, including some in China. The variety of earth-based constructional materials is significant among different regions, with each region influencing the selection of local earth construction materials. In this study, earth materials from four regions of China were collected and sorted, with 10 samples from each source, and cube compressive strength tests were performed to analyze the composition and mechanical properties of the four materials, including northeast black earth, southeast red earth, northwest loess, and Xinjiang yellow sand earth. The results showed that significant differences existed in the composition of earth-based constructional materials from different regions, which have influence on the materials’ compressive strength. The order from large to small of compressive strengths was loess, black earth, yellow sandy earth, and red earth. Material load-displacement curves were influenced significantly by the plasticity index, but the overall failure processes of the various samples were basically the same.

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