TY  - JOUR
AU  - Duran, Abel
AU  - Praščević, Nataša
PY  - 2021
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2544
AB  - The aim of this research is focused on the problem of allocation and selection of the construction equipment when construction firms bid for construction projects. The main objective of the selection of construction equipment is to ensure the timely completion of all considered projects, while at the same time the planned budget is fulfilled. In this paper fuzzy linear programming is applied with the fuzzy objective function and fuzzy constrains. The proposed mathematical model is applied for optimal selection and allocation of equipment for five projects with different quantities of concrete works and general budget.
PB  - Belgrade, Serbia: Society for Materials and Structures Testing of Serbia
PB  - Belgrade, Serbia: University of Belgrade Faculty of Civil Engineering
PB  - Belgrade, Serbia : Association of Structural Engineers of Serbia
T2  - Building materials and structures Jouranl
T1  - Allocation and Selection of equipment for concrete works using Fuzzy Linear Programming
SP  - 195
VL  - 64
DO  - 10.5937/GRMK210395D
ER  - 

@article{
author = "Duran, Abel and Praščević, Nataša",
year = "2021",
abstract = "The aim of this research is focused on the problem of allocation and selection of the construction equipment when construction firms bid for construction projects. The main objective of the selection of construction equipment is to ensure the timely completion of all considered projects, while at the same time the planned budget is fulfilled. In this paper fuzzy linear programming is applied with the fuzzy objective function and fuzzy constrains. The proposed mathematical model is applied for optimal selection and allocation of equipment for five projects with different quantities of concrete works and general budget.",
publisher = "Belgrade, Serbia: Society for Materials and Structures Testing of Serbia, Belgrade, Serbia: University of Belgrade Faculty of Civil Engineering, Belgrade, Serbia : Association of Structural Engineers of Serbia",
journal = "Building materials and structures Jouranl",
title = "Allocation and Selection of equipment for concrete works using Fuzzy Linear Programming",
pages = "195",
volume = "64",
doi = "10.5937/GRMK210395D"
}

Duran, A.,& Praščević, N.. (2021). Allocation and Selection of equipment for concrete works using Fuzzy Linear Programming. in Building materials and structures Jouranl
Belgrade, Serbia: Society for Materials and Structures Testing of Serbia., 64, 195.
https://doi.org/10.5937/GRMK210395D

Duran A, Praščević N. Allocation and Selection of equipment for concrete works using Fuzzy Linear Programming. in Building materials and structures Jouranl. 2021;64:195.
doi:10.5937/GRMK210395D .

Duran, Abel, Praščević, Nataša, "Allocation and Selection of equipment for concrete works using Fuzzy Linear Programming" in Building materials and structures Jouranl, 64 (2021):195,
https://doi.org/10.5937/GRMK210395D . .

TY  - CONF
AU  - Duran, Abel
AU  - Praščević, Nataša
PY  - 2021
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2546
AB  - Cilj ovog istraživanja je fokusiran na problem alokacije i selekcije građevinske mehanizacije sa
kojim se građevinske firme suočavaju prilikom konkurisanja za građevinske projekte. Primarni
cilj u izboru građevinske mehanizacije jeste osiguranje završetak svih razmatranih projekta u
predviđenom roku, uz poštovanje predviđenog budžeta. Uzimanjem u obzir 5 različitih projekata
sa različitim količinama betonskih radova i previđeni budžet, za pronalazak optimalnog rešenja
ovog problema primenjeno je fuzzy linearno programiranje u slučaju rasplinutosti same
kriterijumske funkcije i koeficijenata uz ograničenja.
AB  - The aim of this research is focused on the problem of allocation and selection of the construction
equipment when construction firms bid for construction projects. The main objective of the
selection of construction equipment is to ensure the timely completion of all considered projects,
while at the same time the planned budget is fulfilled. In this paper fuzzy linear programming is
applied with the fuzzy objective function and fuzzy constrains. The proposed mathematical
model is applied for optimal selection and allocation of equipment for five projects with different
quantities of concrete works and general budget.
PB  - Beograd, Srbija : Univerzitet u Beogradu Građevinski fakultet
PB  - Beograd, Srbija : Društvo građevinskih konstruktera Srbije
C3  - Zbornik radova, Nacionalni Simpozijum Društva Građevinskih Konstruktera Srbije DKGS 2020
T1  - Alokacija i izbor mehanizacije za betonske radove korišćenjem Fuzzy linearnog programiranja
SP  - 538
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2546
ER  - 

@conference{
author = "Duran, Abel and Praščević, Nataša",
year = "2021",
abstract = "Cilj ovog istraživanja je fokusiran na problem alokacije i selekcije građevinske mehanizacije sa
kojim se građevinske firme suočavaju prilikom konkurisanja za građevinske projekte. Primarni
cilj u izboru građevinske mehanizacije jeste osiguranje završetak svih razmatranih projekta u
predviđenom roku, uz poštovanje predviđenog budžeta. Uzimanjem u obzir 5 različitih projekata
sa različitim količinama betonskih radova i previđeni budžet, za pronalazak optimalnog rešenja
ovog problema primenjeno je fuzzy linearno programiranje u slučaju rasplinutosti same
kriterijumske funkcije i koeficijenata uz ograničenja., The aim of this research is focused on the problem of allocation and selection of the construction
equipment when construction firms bid for construction projects. The main objective of the
selection of construction equipment is to ensure the timely completion of all considered projects,
while at the same time the planned budget is fulfilled. In this paper fuzzy linear programming is
applied with the fuzzy objective function and fuzzy constrains. The proposed mathematical
model is applied for optimal selection and allocation of equipment for five projects with different
quantities of concrete works and general budget.",
publisher = "Beograd, Srbija : Univerzitet u Beogradu Građevinski fakultet, Beograd, Srbija : Društvo građevinskih konstruktera Srbije",
journal = "Zbornik radova, Nacionalni Simpozijum Društva Građevinskih Konstruktera Srbije DKGS 2020",
title = "Alokacija i izbor mehanizacije za betonske radove korišćenjem Fuzzy linearnog programiranja",
pages = "538",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2546"
}

Duran, A.,& Praščević, N.. (2021). Alokacija i izbor mehanizacije za betonske radove korišćenjem Fuzzy linearnog programiranja. in Zbornik radova, Nacionalni Simpozijum Društva Građevinskih Konstruktera Srbije DKGS 2020
Beograd, Srbija : Univerzitet u Beogradu Građevinski fakultet., 538.
https://hdl.handle.net/21.15107/rcub_grafar_2546

Duran A, Praščević N. Alokacija i izbor mehanizacije za betonske radove korišćenjem Fuzzy linearnog programiranja. in Zbornik radova, Nacionalni Simpozijum Društva Građevinskih Konstruktera Srbije DKGS 2020. 2021;:538.
https://hdl.handle.net/21.15107/rcub_grafar_2546 .

Duran, Abel, Praščević, Nataša, "Alokacija i izbor mehanizacije za betonske radove korišćenjem Fuzzy linearnog programiranja" in Zbornik radova, Nacionalni Simpozijum Društva Građevinskih Konstruktera Srbije DKGS 2020 (2021):538,
https://hdl.handle.net/21.15107/rcub_grafar_2546 .

TY  - CONF
AU  - Duran, Abel
PY  - 2021
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2545
AB  - Cilj ovog istraživanja je analiziranje praktičnih ugovornih problema izazvanih pandemijom virusa COVID-19, a koji se javljaju na građevinskim projektima ugovorenim u skladu sa FIDIC uslovima ugovora za izgradnju. Polazeći od pretpostavke da nijedna od strana u trenutku ugovaranja nije mogla predvideti ovakav događaj, u ovom radu autor će prikazati i razmotriti ključne ugovorne klauzule koje se mogu smatrati relevantnim za dokazivanje odštetnih zahteva za produžetak roka ili dodatna plaćanja.
AB  - The aim of this research is to analyze the practical contractual problems that are arising as a consequence of COVID-19 pandemic and which occurs on construction projects contracted under FIDIC Conditions of Contract for Construction. Assuming that neither party could have foreseen such an event at the time of contracting, in this paper author will present and analyze key contractual clauses that may be considered relevant for proving claims for extension of time or additional payments.
PB  - Beograd, Srbija : Univerzitet u Beogradu Građevinski fakultet
PB  - Beograd, Srbija : Društvo građevinskih konstruktera Srbije
C3  - Zbornik radova, Nacionalni Simpozijum Društva Građevinskih Konstruktera Srbije DKGS 2020
T1  - Uticaj Covid-19 na odštetne zahteve za produžetak roka i dodatna plaćanja u FIDIC uslovima ugovora
SP  - 532
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2545
ER  - 

@conference{
author = "Duran, Abel",
year = "2021",
abstract = "Cilj ovog istraživanja je analiziranje praktičnih ugovornih problema izazvanih pandemijom virusa COVID-19, a koji se javljaju na građevinskim projektima ugovorenim u skladu sa FIDIC uslovima ugovora za izgradnju. Polazeći od pretpostavke da nijedna od strana u trenutku ugovaranja nije mogla predvideti ovakav događaj, u ovom radu autor će prikazati i razmotriti ključne ugovorne klauzule koje se mogu smatrati relevantnim za dokazivanje odštetnih zahteva za produžetak roka ili dodatna plaćanja., The aim of this research is to analyze the practical contractual problems that are arising as a consequence of COVID-19 pandemic and which occurs on construction projects contracted under FIDIC Conditions of Contract for Construction. Assuming that neither party could have foreseen such an event at the time of contracting, in this paper author will present and analyze key contractual clauses that may be considered relevant for proving claims for extension of time or additional payments.",
publisher = "Beograd, Srbija : Univerzitet u Beogradu Građevinski fakultet, Beograd, Srbija : Društvo građevinskih konstruktera Srbije",
journal = "Zbornik radova, Nacionalni Simpozijum Društva Građevinskih Konstruktera Srbije DKGS 2020",
title = "Uticaj Covid-19 na odštetne zahteve za produžetak roka i dodatna plaćanja u FIDIC uslovima ugovora",
pages = "532",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2545"
}

Duran, A.. (2021). Uticaj Covid-19 na odštetne zahteve za produžetak roka i dodatna plaćanja u FIDIC uslovima ugovora. in Zbornik radova, Nacionalni Simpozijum Društva Građevinskih Konstruktera Srbije DKGS 2020
Beograd, Srbija : Univerzitet u Beogradu Građevinski fakultet., 532.
https://hdl.handle.net/21.15107/rcub_grafar_2545

Duran A. Uticaj Covid-19 na odštetne zahteve za produžetak roka i dodatna plaćanja u FIDIC uslovima ugovora. in Zbornik radova, Nacionalni Simpozijum Društva Građevinskih Konstruktera Srbije DKGS 2020. 2021;:532.
https://hdl.handle.net/21.15107/rcub_grafar_2545 .

Duran, Abel, "Uticaj Covid-19 na odštetne zahteve za produžetak roka i dodatna plaćanja u FIDIC uslovima ugovora" in Zbornik radova, Nacionalni Simpozijum Društva Građevinskih Konstruktera Srbije DKGS 2020 (2021):532,
https://hdl.handle.net/21.15107/rcub_grafar_2545 .

TY  - CONF
AU  - Duran, Abel
PY  - 2021
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2543
AB  - The aim of this research is to present the practical problems in the realization of public-private partnerships projects that are arising as a consequence of COVID-19 and which occurs on construction projects contracted under this model. Furthermore, key channels of transmissions of the pandemic crisis that are affecting PPP projects across the globe will be outlined. Bearing in mind that there is little hard data available on how PPP projects and plans have been affected, this research paper will focus on predicting the medium-long term impacts of the pandemic. In addition, author will suggest how parties involved in PPP projects might address the ongoing issues, taking into account
that the impact of the pandemic and economic downturn on PPP projects varies depending on the stage of the PPP process.
AB  - Циљ овог рада јесте приказ практичних проблема у току реализације пројеката јавно-приватног партнерства који настају као последица КОВИД-19 и који се јављају на грађевинским пројектима уговореним по овом моделу. Поред тога, биће приказани и кључни токови којима се утицај кризе изазване пандемијом одражава на реализацију пројеката ЈПП широм света. Имајући у виду да је тренутно на располагању мала количина података о утицају кризе на реализацију пројеката ЈПП, циљ овог рада биће да предвиди средњорочне и дугорочне утицаје пандемије. Додатно, аутор ће предложити могуће начине помоћу којих уговорне стране могу превазићи текуће проблеме, узимајући у обзир да утицај пандемије и
економског пада на пројектима ЈПП варира у зависности од фазе у којој се пројекат налази.
PB  - Subotica, Srbija : Универзитет у Новом Саду Грађевински факултет Суботица
C3  - Conference proceedings, 8th International conference, Contemporary achievements in Civil Engineering 2021
T1  - The impact of COVID-19 on the realization of Public-Private Partnerships projects
SP  - 563
DO  - 10.14415/konferencijaGFS2021.55
ER  - 

@conference{
author = "Duran, Abel",
year = "2021",
abstract = "The aim of this research is to present the practical problems in the realization of public-private partnerships projects that are arising as a consequence of COVID-19 and which occurs on construction projects contracted under this model. Furthermore, key channels of transmissions of the pandemic crisis that are affecting PPP projects across the globe will be outlined. Bearing in mind that there is little hard data available on how PPP projects and plans have been affected, this research paper will focus on predicting the medium-long term impacts of the pandemic. In addition, author will suggest how parties involved in PPP projects might address the ongoing issues, taking into account
that the impact of the pandemic and economic downturn on PPP projects varies depending on the stage of the PPP process., Циљ овог рада јесте приказ практичних проблема у току реализације пројеката јавно-приватног партнерства који настају као последица КОВИД-19 и који се јављају на грађевинским пројектима уговореним по овом моделу. Поред тога, биће приказани и кључни токови којима се утицај кризе изазване пандемијом одражава на реализацију пројеката ЈПП широм света. Имајући у виду да је тренутно на располагању мала количина података о утицају кризе на реализацију пројеката ЈПП, циљ овог рада биће да предвиди средњорочне и дугорочне утицаје пандемије. Додатно, аутор ће предложити могуће начине помоћу којих уговорне стране могу превазићи текуће проблеме, узимајући у обзир да утицај пандемије и
економског пада на пројектима ЈПП варира у зависности од фазе у којој се пројекат налази.",
publisher = "Subotica, Srbija : Универзитет у Новом Саду Грађевински факултет Суботица",
journal = "Conference proceedings, 8th International conference, Contemporary achievements in Civil Engineering 2021",
title = "The impact of COVID-19 on the realization of Public-Private Partnerships projects",
pages = "563",
doi = "10.14415/konferencijaGFS2021.55"
}

Duran, A.. (2021). The impact of COVID-19 on the realization of Public-Private Partnerships projects. in Conference proceedings, 8th International conference, Contemporary achievements in Civil Engineering 2021
Subotica, Srbija : Универзитет у Новом Саду Грађевински факултет Суботица., 563.
https://doi.org/10.14415/konferencijaGFS2021.55

Duran A. The impact of COVID-19 on the realization of Public-Private Partnerships projects. in Conference proceedings, 8th International conference, Contemporary achievements in Civil Engineering 2021. 2021;:563.
doi:10.14415/konferencijaGFS2021.55 .

Duran, Abel, "The impact of COVID-19 on the realization of Public-Private Partnerships projects" in Conference proceedings, 8th International conference, Contemporary achievements in Civil Engineering 2021 (2021):563,
https://doi.org/10.14415/konferencijaGFS2021.55 . .

TY  - CONF
AU  - Duran, Abel
PY  - 2021
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2542
AB  - The aim of this paper is to present the practical implementation of performance-based road maintenance contracts through a comparative analysis of the advantages and disadvantages between this approach and the traditional road maintenance contracting model. On the other hand, author will present key guidelines for proper implementation of performance-based contracts on winter and summer road maintenance, with the aim of reducing maintenance costs and increasing the level of service quality provided by contractors. Furthermore, this paper will outline the experience of the implementation of performance-based road maintenance contracts in developed countries, as well as a review the implementation of this type of contracts in the Republic of Serbia.
AB  - Циљ овог рада јесте приказ практичне имплементације уговора за одржавање путева заснованих на учинку кроз компаративну анализу предности и недостатака у односу на традиционални модел уговарања одржавања путева. Са друге стране, аутор ће дати кључне смернице за правилну имплементацију уговора заснованих на учинку на зимско и летње одржавање путева, а у циљу смањења трошкова одржавања и повећања нивоа квалитета услуге од стране извођача радова. Додатно у овом раду биће приказана и искуства на примени уговора за одржавање путева заснованих на учинку у развијеним земљама, као и осврт на примену ове врсте уговора у Републици Србији.
PB  - Subotica, Srbija : Универзитет у Новом Саду Грађевински факултет Суботица
C3  - Conference proceedings, 8th International conference, Contemporary achievements in Civil Engineering 2021
T1  - Comparison of Performance-Based and Traditional Road Maintenance Contracts
SP  - 555
DO  - 10.14415/konferencijaGFS2021.54
ER  - 

@conference{
author = "Duran, Abel",
year = "2021",
abstract = "The aim of this paper is to present the practical implementation of performance-based road maintenance contracts through a comparative analysis of the advantages and disadvantages between this approach and the traditional road maintenance contracting model. On the other hand, author will present key guidelines for proper implementation of performance-based contracts on winter and summer road maintenance, with the aim of reducing maintenance costs and increasing the level of service quality provided by contractors. Furthermore, this paper will outline the experience of the implementation of performance-based road maintenance contracts in developed countries, as well as a review the implementation of this type of contracts in the Republic of Serbia., Циљ овог рада јесте приказ практичне имплементације уговора за одржавање путева заснованих на учинку кроз компаративну анализу предности и недостатака у односу на традиционални модел уговарања одржавања путева. Са друге стране, аутор ће дати кључне смернице за правилну имплементацију уговора заснованих на учинку на зимско и летње одржавање путева, а у циљу смањења трошкова одржавања и повећања нивоа квалитета услуге од стране извођача радова. Додатно у овом раду биће приказана и искуства на примени уговора за одржавање путева заснованих на учинку у развијеним земљама, као и осврт на примену ове врсте уговора у Републици Србији.",
publisher = "Subotica, Srbija : Универзитет у Новом Саду Грађевински факултет Суботица",
journal = "Conference proceedings, 8th International conference, Contemporary achievements in Civil Engineering 2021",
title = "Comparison of Performance-Based and Traditional Road Maintenance Contracts",
pages = "555",
doi = "10.14415/konferencijaGFS2021.54"
}

Duran, A.. (2021). Comparison of Performance-Based and Traditional Road Maintenance Contracts. in Conference proceedings, 8th International conference, Contemporary achievements in Civil Engineering 2021
Subotica, Srbija : Универзитет у Новом Саду Грађевински факултет Суботица., 555.
https://doi.org/10.14415/konferencijaGFS2021.54

Duran A. Comparison of Performance-Based and Traditional Road Maintenance Contracts. in Conference proceedings, 8th International conference, Contemporary achievements in Civil Engineering 2021. 2021;:555.
doi:10.14415/konferencijaGFS2021.54 .

Duran, Abel, "Comparison of Performance-Based and Traditional Road Maintenance Contracts" in Conference proceedings, 8th International conference, Contemporary achievements in Civil Engineering 2021 (2021):555,
https://doi.org/10.14415/konferencijaGFS2021.54 . .

TY  - CONF
AU  - Dragojević, Marko
AU  - Duran, Abel
AU  - Praščević, Nataša
PY  - 2019
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2540
AB  - Cilj ovog istraživanja je određivanje modela ekonomske optimizacije izbora građevinske mehanizacije za zemljane radove - iskop zemlje treće kategorije korišćenjem pristupa linearnog programiranja. U građevinskoj praksi ovakav model ekonomske optimizacije se često naziva i uži izbor građevinske mehanizacije. Kako se prava vrednost ovakvog modela ogleda u njegovoj primeni na konkretnim građevinskim projektima, u okviru ovog rada isti je razvijen na konkretnom primeru iz prakse, a koji podrazumeva da se radovi realizuju u okviru projekta izgradnje stambeno-poslovnog kompleksa površine P=30.000,0 m2 u planiranom trajanju od τ=45 dana. Optimizacija je izvršena tako da tehnološki proces teče fluidno, bez značajnih zastoja, odnosno na način koji obezbeđuje maksimalnu uposlenost građevinske mehanizacije uz adekvatno zadovoljenje ekonomskih parametara produktivnosti i ekonomičnosti. Nakon razmatranja više potencijalnih kombinacija kao optimalana izabrana je kombinacija broj 3, odnosno dva dozera, četiri utovarivača i deset kamiona kipera. Pri ovakvom izboru jedinična cena radova iznosi 34,02 €/m3, dok je praktični učinak 203,25 m3/h. Ukupna cena svih radova je 3.061.800,00 €, a ukupno trajanje iskopa iznosi 44,3 dana.
AB  - The aim of this research is determination of an economical optimization model for earthmoving equipment selection using linear programming approach. In construction practice model along these lines is often called shortlist of construction equipment. Bearing in mind that actual practical value of the following model is in its application on particular construction projects, in this paper aforementioned model is developed and proved on the practical example, which implies that works are being done within construction project of the residential-commercial building complex with total area of P=30.000,0 m2 during the period of τ=45 days. Optimization has been done in a manner which guarantees that technological process flows fluently, without significant congestions, or in other words, in a way that ensures employment maximization of the construction equipment, while in the same time economical and productivity parameters are adequately fulfilled. After considering several potential combinations, a combination No. 3 have been selected as optimal one i.e. two bulldozers, four loaders and ten dump trucks. With aforementioned choice, the unit price of the works is 34,02 €/m3, while practical productivity is 203,25 m3/h. The total cost of all works amounts 3.061.800,00 €, and the total duration of the excavation works is 44,3 days.
PB  - Belgrade, Serbia : University of Belgrade, Faculty of Organizational Sciences
C3  - Conference proceedings, XLVI International Symposium of Operational Research SYM-OP-IS 2019
T1  - An economical optimization model for earthmoving equipment selection using Linear Programming approach
SP  - 565
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2540
ER  - 

@conference{
author = "Dragojević, Marko and Duran, Abel and Praščević, Nataša",
year = "2019",
abstract = "Cilj ovog istraživanja je određivanje modela ekonomske optimizacije izbora građevinske mehanizacije za zemljane radove - iskop zemlje treće kategorije korišćenjem pristupa linearnog programiranja. U građevinskoj praksi ovakav model ekonomske optimizacije se često naziva i uži izbor građevinske mehanizacije. Kako se prava vrednost ovakvog modela ogleda u njegovoj primeni na konkretnim građevinskim projektima, u okviru ovog rada isti je razvijen na konkretnom primeru iz prakse, a koji podrazumeva da se radovi realizuju u okviru projekta izgradnje stambeno-poslovnog kompleksa površine P=30.000,0 m2 u planiranom trajanju od τ=45 dana. Optimizacija je izvršena tako da tehnološki proces teče fluidno, bez značajnih zastoja, odnosno na način koji obezbeđuje maksimalnu uposlenost građevinske mehanizacije uz adekvatno zadovoljenje ekonomskih parametara produktivnosti i ekonomičnosti. Nakon razmatranja više potencijalnih kombinacija kao optimalana izabrana je kombinacija broj 3, odnosno dva dozera, četiri utovarivača i deset kamiona kipera. Pri ovakvom izboru jedinična cena radova iznosi 34,02 €/m3, dok je praktični učinak 203,25 m3/h. Ukupna cena svih radova je 3.061.800,00 €, a ukupno trajanje iskopa iznosi 44,3 dana., The aim of this research is determination of an economical optimization model for earthmoving equipment selection using linear programming approach. In construction practice model along these lines is often called shortlist of construction equipment. Bearing in mind that actual practical value of the following model is in its application on particular construction projects, in this paper aforementioned model is developed and proved on the practical example, which implies that works are being done within construction project of the residential-commercial building complex with total area of P=30.000,0 m2 during the period of τ=45 days. Optimization has been done in a manner which guarantees that technological process flows fluently, without significant congestions, or in other words, in a way that ensures employment maximization of the construction equipment, while in the same time economical and productivity parameters are adequately fulfilled. After considering several potential combinations, a combination No. 3 have been selected as optimal one i.e. two bulldozers, four loaders and ten dump trucks. With aforementioned choice, the unit price of the works is 34,02 €/m3, while practical productivity is 203,25 m3/h. The total cost of all works amounts 3.061.800,00 €, and the total duration of the excavation works is 44,3 days.",
publisher = "Belgrade, Serbia : University of Belgrade, Faculty of Organizational Sciences",
journal = "Conference proceedings, XLVI International Symposium of Operational Research SYM-OP-IS 2019",
title = "An economical optimization model for earthmoving equipment selection using Linear Programming approach",
pages = "565",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2540"
}

Dragojević, M., Duran, A.,& Praščević, N.. (2019). An economical optimization model for earthmoving equipment selection using Linear Programming approach. in Conference proceedings, XLVI International Symposium of Operational Research SYM-OP-IS 2019
Belgrade, Serbia : University of Belgrade, Faculty of Organizational Sciences., 565.
https://hdl.handle.net/21.15107/rcub_grafar_2540

Dragojević M, Duran A, Praščević N. An economical optimization model for earthmoving equipment selection using Linear Programming approach. in Conference proceedings, XLVI International Symposium of Operational Research SYM-OP-IS 2019. 2019;:565.
https://hdl.handle.net/21.15107/rcub_grafar_2540 .

Dragojević, Marko, Duran, Abel, Praščević, Nataša, "An economical optimization model for earthmoving equipment selection using Linear Programming approach" in Conference proceedings, XLVI International Symposium of Operational Research SYM-OP-IS 2019 (2019):565,
https://hdl.handle.net/21.15107/rcub_grafar_2540 .

TY  - CONF
AU  - Dragojević, Marko
AU  - Duran, Abel
AU  - Praščević, Nataša
PY  - 2019
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2541
AB  - Cilj ovog istraživanja je izbor i alokacija mehanizacije na građevinskim projektima. Sa ovim problemom često se susreću građevinske firme u praksi kada konkurišu za velike građevinske projekte. Optimizacija izbora i alokacija građevinskih mašina se postiže jasnim definisanjem funkcije cilja i odgovarajućih uslova ograničenja uz zadovoljenje preferencija donosioca odluke, u ovom slučaju investitora. Kako je osnovni cilj izbor građevinske mehanizacije koja će osigurati da će se razmatrani projekti izvesti u zahtevanom roku, a uz istovremeno zadovoljenje tehničko-tehnoloških zahteva i planiranog budžeta, za pronalazak optimalnog rešenja ovog problema primenjeno je fuzzy linearno programiranje u slučaju rasplinutosti same kriterijumske funkcije i koeficijenata uz ograničenja. Uzimanjem u obzir pet različitih projekata sa različitim količinama zemljanih radova kao i predloženi okvirni budžet postavljeni problem je rešen tako što su izabrana četiri bagera, dva utovarivača, osam kamiona kipera, dva dozera i jedan skreper. Sa ovako defiisanom kombinacijom ostvareni budžet iznosi dva miliona i trista-četrdeset hiljada evra, a stepen zadovoljenja zahteva je 0,7.
AB  - The aim of this research is selection and allocation of earthmoving equipment on construction projects. Construction companies often encounter this problem in practice when they bid for the large construction projects. Selection optimization and allocation of construction equipment is achieved by clearly defining the target function and all relevant conditions of restrictions, together with ensuring that interests of the decision- maker, in this case Employer, preferences are met. Bearing in mind that main objective during the process of selection of construction equipment is to ensure timely completion of all projects considered, while at the same time technical-technological requirements and planned budget are satisfied, in order to find an optimal solution to the aforementioned problem, fuzzy linear programming was applied in the case of the fuzzy criterion function itself and the coefficients with restrictions. Taking into account five different construction projects, all with different quantities of earthworks, as well as the proposed general budget, the problem was solved by selecting four excavators, two loaders, eight dump trucks, two bulldozers and one scrapper. With aforementioned choice, the achieved budget amounts to two million and three hundred-forty thousand euros, with the level of satisfaction of the request is 0.7
PB  - Belgrade, Serbia : University of Belgrade, Faculty of Organizational Sciences
C3  - Conference proceedings, XLVI International Symposium of Operational Research SYM-OP-IS 2019
T1  - Selection optimization and allocation of earthmoving equipment on construction projects
SP  - 559
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2541
ER  - 

@conference{
author = "Dragojević, Marko and Duran, Abel and Praščević, Nataša",
year = "2019",
abstract = "Cilj ovog istraživanja je izbor i alokacija mehanizacije na građevinskim projektima. Sa ovim problemom često se susreću građevinske firme u praksi kada konkurišu za velike građevinske projekte. Optimizacija izbora i alokacija građevinskih mašina se postiže jasnim definisanjem funkcije cilja i odgovarajućih uslova ograničenja uz zadovoljenje preferencija donosioca odluke, u ovom slučaju investitora. Kako je osnovni cilj izbor građevinske mehanizacije koja će osigurati da će se razmatrani projekti izvesti u zahtevanom roku, a uz istovremeno zadovoljenje tehničko-tehnoloških zahteva i planiranog budžeta, za pronalazak optimalnog rešenja ovog problema primenjeno je fuzzy linearno programiranje u slučaju rasplinutosti same kriterijumske funkcije i koeficijenata uz ograničenja. Uzimanjem u obzir pet različitih projekata sa različitim količinama zemljanih radova kao i predloženi okvirni budžet postavljeni problem je rešen tako što su izabrana četiri bagera, dva utovarivača, osam kamiona kipera, dva dozera i jedan skreper. Sa ovako defiisanom kombinacijom ostvareni budžet iznosi dva miliona i trista-četrdeset hiljada evra, a stepen zadovoljenja zahteva je 0,7., The aim of this research is selection and allocation of earthmoving equipment on construction projects. Construction companies often encounter this problem in practice when they bid for the large construction projects. Selection optimization and allocation of construction equipment is achieved by clearly defining the target function and all relevant conditions of restrictions, together with ensuring that interests of the decision- maker, in this case Employer, preferences are met. Bearing in mind that main objective during the process of selection of construction equipment is to ensure timely completion of all projects considered, while at the same time technical-technological requirements and planned budget are satisfied, in order to find an optimal solution to the aforementioned problem, fuzzy linear programming was applied in the case of the fuzzy criterion function itself and the coefficients with restrictions. Taking into account five different construction projects, all with different quantities of earthworks, as well as the proposed general budget, the problem was solved by selecting four excavators, two loaders, eight dump trucks, two bulldozers and one scrapper. With aforementioned choice, the achieved budget amounts to two million and three hundred-forty thousand euros, with the level of satisfaction of the request is 0.7",
publisher = "Belgrade, Serbia : University of Belgrade, Faculty of Organizational Sciences",
journal = "Conference proceedings, XLVI International Symposium of Operational Research SYM-OP-IS 2019",
title = "Selection optimization and allocation of earthmoving equipment on construction projects",
pages = "559",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2541"
}

Dragojević, M., Duran, A.,& Praščević, N.. (2019). Selection optimization and allocation of earthmoving equipment on construction projects. in Conference proceedings, XLVI International Symposium of Operational Research SYM-OP-IS 2019
Belgrade, Serbia : University of Belgrade, Faculty of Organizational Sciences., 559.
https://hdl.handle.net/21.15107/rcub_grafar_2541

Dragojević M, Duran A, Praščević N. Selection optimization and allocation of earthmoving equipment on construction projects. in Conference proceedings, XLVI International Symposium of Operational Research SYM-OP-IS 2019. 2019;:559.
https://hdl.handle.net/21.15107/rcub_grafar_2541 .

Dragojević, Marko, Duran, Abel, Praščević, Nataša, "Selection optimization and allocation of earthmoving equipment on construction projects" in Conference proceedings, XLVI International Symposium of Operational Research SYM-OP-IS 2019 (2019):559,
https://hdl.handle.net/21.15107/rcub_grafar_2541 .