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Journal Details
Format
Journal
eISSN
1338-7278
First Published
29 Mar 2013
Publication timeframe
2 times per year
Languages
English

Search

Volume 9 (2014): Issue 2 (November 2014)

Journal Details
Format
Journal
eISSN
1338-7278
First Published
29 Mar 2013
Publication timeframe
2 times per year
Languages
English

Search

10 Articles
Open Access

Applicability of Bromilow´s Time-cost Model for Residential Projects in Slovakia

Published Online: 11 Dec 2014
Page range: 5 - 12

Abstract

Abstract

The concept of construction time has been mentioned by most researchers as one of the key factors of a successful project. Time-cost model for rapid estimation of construction time appeared in the world some fifty years ago and the most mentioned is model developed by Bromilow. The purpose of submitted research is to validate Bromilow´s time-cost (BTC) model and identify constants in BTC model in context with residential construction projects in Slovak construction conditions. The data for the study were obtained from 28 residential projects completed within the period 2010-2013 in regions of Slovakia. The data were analyzed using classical correlation and regression analysis

Keywords

  • Bromilow´s time-cost (BTC) model
  • construction time
  • construction cost
Open Access

Studies of the Prefabricated Housing Construction Market in Poland

Published Online: 11 Dec 2014
Page range: 13 - 26

Abstract

Abstract

The directions of development of the construction market are not only related to the need to own one’s own home but also to increasing functional and economic requirements and conditions of sustainable development. The perception and understanding of prefabrication in housing construction are undoubtedly starting to change. Sustainable construction criteria may constitute a significant turning point and support for the development of new prefabricated housing construction technologies. Entrepreneurs are slowly perceiving an opportunity for the development of prefabrication in the construction market. The implementation and popularisation of ready-made homes will undoubtedly constitute a favourable change in the Polish construction market; however, this will require a modification of habits. This article presents an historical analysis of the development of the prefabricated housing construction market as well as an attempt to answer questions concerning the future of prefabrication in housing construction in Poland based on the conducted studies.

Keywords

  • prefabrication
  • housing construction
  • sustainable development
  • market studies
  • survey
Open Access

Preparation Measurements and Assessment of Roof Systems

Published Online: 11 Dec 2014
Page range: 27 - 38

Abstract

Abstract

The Institute of Architectural Engineering at the Civil Engineering Faculty TU of Kosice, in its ongoing research, aims to monitor the physical properties of building envelope structures with emphasis placed on hydrothermal problems, at present. The research focuses on the assembly of equipment in climate chambers with their respective sample envelopes and fenestration systems, which are involved in a measuring experiment. The prime aim is to design a logical and transparent system for gathering, evaluating and storing hydrothermal related data. This contribution further illustrates the embedding system of measurement points in installed samples and the system of monitoring their physical properties over an annual period.

Keywords

  • glass systems
  • buildings materials
  • roof in situ measurements
  • laboratory measurements
  • building envelope
Open Access

Facility Management as Part of an Integrated Design of Civil Engineering Structures

Published Online: 11 Dec 2014
Page range: 39 - 46

Abstract

Abstract

The present article deals about facility management, as still relatively young component of an integrated planning and design of buildings. Attention is focused on the area of the proposal, which can greatly affect to amount of future operating costs. Operational efficiency has been divided into individual components and satisfaction with the solution of buildings already constructed was assessed by workers, who are actually dedicated facility management in these organizations. The results were then assessed and evaluated through regression analysis. The aim of this paper is to determine to what extent is desired update project documentation of new buildings from the perspective of facility management.

Keywords

  • facility management
  • integrated design
  • life cycle of buildings
  • operational efficiency
Open Access

Geometry of Prismatic Tensegrity Constructions Composed of Three and Four-strut Cells

Published Online: 11 Dec 2014
Page range: 47 - 56

Abstract

Abstract

In the paper there is described geometry of double layer tensegrity constructions composed of prismatic cells with rhombic configuration of three or four strut bases so-called prismatic Tensegrity constructions. There are described bi-dimensional assemblies creating double layer grids of three or four-strut cells with a node-on-node junction. The grids can be planar, of one or two curvature constructions.

Keywords

  • tensegrityconstruction
  • equilibrium
  • compression
  • tension
  • grid
  • cell
Open Access

Approach for Assessing Direct Flood Damages

Published Online: 11 Dec 2014
Page range: 57 - 64

Abstract

Abstract

This article presents a methodological approach to flood direct tangible damage - damage to assets and direct intangible damage - environmental damage and loss of life assessment. The assessment of flood risk is an essential part of the risk management approach, which is the conceptual basis for the EU directive 2007/60/ES on the assessment and management of flood risk. The purpose of this directive is to establish a framework for the assessment and management of flood risk, aiming at the reduction of the adverse consequences for human health, the environment, cultural heritage and economic activity associated with flood in the community. Overall, an accurate estimation of negative effects on assets, environment and people is important in order to be able to determine the economy, environmental and social flood risk level in a system and the effects of risk mitigation measures.

Keywords

  • flood
  • direct tangible damage
  • direct intangible damage
  • flood risk
Open Access

Analysis of Correlations between the Level of Partnering Relations and their Influence on the Time, Cost, Quality and Safety of Implementation of Construction Projects

Published Online: 11 Dec 2014
Page range: 65 - 75

Abstract

Abstract

The present paper uses the developed model of the influence of partnering relations on the time, cost, quality and safety of implementation of construction projects. On its basis, a questionnaire has been created and a preliminary survey has been conducted. The paper presents an analysis of correlations between the level of partnering relations in the context of the partnering measures indicated in the model and their influence on the time, cost, quality and safety of implementation of construction projects. The analysis was conducted based on the data collected in 52 construction projects. The values of the Spearman rank correlation coefficient and the Pearson product-moment correlation coefficient have been calculated for the examined relations. The analysis allowed for indicating the measures of partnering whose improvement most often brings benefits with regard to the time, cost, quality and safety of implementation of construction projects. Among the 80 analysed correlations, the ones identified as strong were: 15 relations connected with the time, 8 with the cost, 5 with the quality and 1 with the safety of implementation of construction projects.

Keywords

  • construction industry
  • correlation
  • partnering relations
  • survey research
Open Access

Remedial Method against Moisture Problems – Church of St. Abdon and Sennen in Gemersky Jablonec

Published Online: 11 Dec 2014
Page range: 77 - 84

Abstract

Abstract

Moisture is a major source of damage in historic solid masonry. Rising damp is a well-known phenomenon around the world and occurs when groundwater flows into the base of a construction and is allowed to rise through the pore structure. From practical experience it is known that many factors may play a role regarding permeability problems in masonry. The amount of possible causes of moisture problems in historic masonry underlines the complexity of this phenomenon. Evaporation is an important factor in rising damp. The surface of an affected wall contains moisture that has risen from the ground and this moisture is then subject to evaporation. The factors controlling evaporation include: temperature, humidity, air movement and surface.

Keywords

  • rising damp
  • ventilation of air channel
  • drainage
  • historical building
  • masonry
Open Access

The Methodology of Interactive Parametric Modelling of Construction Site Facilities in BIM Environment

Published Online: 11 Dec 2014
Page range: 85 - 96

Abstract

Abstract

Information technology is becoming a strong tool in different industries, including construction. The recent trend of buildings designing is leading up to creation of the most comprehensive virtual building model (Building Information Model) in order to solve all the problems relating to the project as early as in the designing phase. Building information modelling is a new way of approaching to the design of building projects documentation. Currently, the building site layout as a part of the building design documents has a very little support in the BIM environment. Recently, the research of designing the construction process conditions has centred on improvement of general practice in planning and on new approaches to construction site layout planning. The state of art in field of designing the construction process conditions indicated an unexplored problem related to connection of knowledge system with construction site facilities (CSF) layout through interactive modelling. The goal of the paper is to present the methodology for execution of 3D construction site facility allocation model (3D CSF-IAM), based on principles of parametric and interactive modelling.

Keywords

  • construction site layout
  • construction site facility
  • BIM model
  • parametric modelling
  • interactive modelling
Open Access

Analysis of the Solar Radiation Impact on Cooling Performance of the Absorption Chiller

Published Online: 11 Dec 2014
Page range: 97 - 106

Abstract

Abstract

Absorption cooling at low power is a new technology which has not yet been applied to current conditioning elements. This paper analyzes the various elements of solar absorption cooling. Individual states were simulated in which working conditions were set for the capability of solar absorption cooling to balance heat loads in the room.

The research is based on an experimental device (absorption units with a performance of 10kW) developed at the STU in Bratislava (currently inputs and outputs of cold sources are being measured). Outputs in this paper are processed so that they connect the entire scheme of the solar absorption cooling system (i.e. the relationship between the solar systems hot and cold storage and the absorption unit).

To determine the size of the storage required, calculated cooling for summer months is considered by the ramp rate of the absorption unit and required flow rate of the collectors.

Keywords

  • solar radiation
  • cooling power absorption unit
10 Articles
Open Access

Applicability of Bromilow´s Time-cost Model for Residential Projects in Slovakia

Published Online: 11 Dec 2014
Page range: 5 - 12

Abstract

Abstract

The concept of construction time has been mentioned by most researchers as one of the key factors of a successful project. Time-cost model for rapid estimation of construction time appeared in the world some fifty years ago and the most mentioned is model developed by Bromilow. The purpose of submitted research is to validate Bromilow´s time-cost (BTC) model and identify constants in BTC model in context with residential construction projects in Slovak construction conditions. The data for the study were obtained from 28 residential projects completed within the period 2010-2013 in regions of Slovakia. The data were analyzed using classical correlation and regression analysis

Keywords

  • Bromilow´s time-cost (BTC) model
  • construction time
  • construction cost
Open Access

Studies of the Prefabricated Housing Construction Market in Poland

Published Online: 11 Dec 2014
Page range: 13 - 26

Abstract

Abstract

The directions of development of the construction market are not only related to the need to own one’s own home but also to increasing functional and economic requirements and conditions of sustainable development. The perception and understanding of prefabrication in housing construction are undoubtedly starting to change. Sustainable construction criteria may constitute a significant turning point and support for the development of new prefabricated housing construction technologies. Entrepreneurs are slowly perceiving an opportunity for the development of prefabrication in the construction market. The implementation and popularisation of ready-made homes will undoubtedly constitute a favourable change in the Polish construction market; however, this will require a modification of habits. This article presents an historical analysis of the development of the prefabricated housing construction market as well as an attempt to answer questions concerning the future of prefabrication in housing construction in Poland based on the conducted studies.

Keywords

  • prefabrication
  • housing construction
  • sustainable development
  • market studies
  • survey
Open Access

Preparation Measurements and Assessment of Roof Systems

Published Online: 11 Dec 2014
Page range: 27 - 38

Abstract

Abstract

The Institute of Architectural Engineering at the Civil Engineering Faculty TU of Kosice, in its ongoing research, aims to monitor the physical properties of building envelope structures with emphasis placed on hydrothermal problems, at present. The research focuses on the assembly of equipment in climate chambers with their respective sample envelopes and fenestration systems, which are involved in a measuring experiment. The prime aim is to design a logical and transparent system for gathering, evaluating and storing hydrothermal related data. This contribution further illustrates the embedding system of measurement points in installed samples and the system of monitoring their physical properties over an annual period.

Keywords

  • glass systems
  • buildings materials
  • roof in situ measurements
  • laboratory measurements
  • building envelope
Open Access

Facility Management as Part of an Integrated Design of Civil Engineering Structures

Published Online: 11 Dec 2014
Page range: 39 - 46

Abstract

Abstract

The present article deals about facility management, as still relatively young component of an integrated planning and design of buildings. Attention is focused on the area of the proposal, which can greatly affect to amount of future operating costs. Operational efficiency has been divided into individual components and satisfaction with the solution of buildings already constructed was assessed by workers, who are actually dedicated facility management in these organizations. The results were then assessed and evaluated through regression analysis. The aim of this paper is to determine to what extent is desired update project documentation of new buildings from the perspective of facility management.

Keywords

  • facility management
  • integrated design
  • life cycle of buildings
  • operational efficiency
Open Access

Geometry of Prismatic Tensegrity Constructions Composed of Three and Four-strut Cells

Published Online: 11 Dec 2014
Page range: 47 - 56

Abstract

Abstract

In the paper there is described geometry of double layer tensegrity constructions composed of prismatic cells with rhombic configuration of three or four strut bases so-called prismatic Tensegrity constructions. There are described bi-dimensional assemblies creating double layer grids of three or four-strut cells with a node-on-node junction. The grids can be planar, of one or two curvature constructions.

Keywords

  • tensegrityconstruction
  • equilibrium
  • compression
  • tension
  • grid
  • cell
Open Access

Approach for Assessing Direct Flood Damages

Published Online: 11 Dec 2014
Page range: 57 - 64

Abstract

Abstract

This article presents a methodological approach to flood direct tangible damage - damage to assets and direct intangible damage - environmental damage and loss of life assessment. The assessment of flood risk is an essential part of the risk management approach, which is the conceptual basis for the EU directive 2007/60/ES on the assessment and management of flood risk. The purpose of this directive is to establish a framework for the assessment and management of flood risk, aiming at the reduction of the adverse consequences for human health, the environment, cultural heritage and economic activity associated with flood in the community. Overall, an accurate estimation of negative effects on assets, environment and people is important in order to be able to determine the economy, environmental and social flood risk level in a system and the effects of risk mitigation measures.

Keywords

  • flood
  • direct tangible damage
  • direct intangible damage
  • flood risk
Open Access

Analysis of Correlations between the Level of Partnering Relations and their Influence on the Time, Cost, Quality and Safety of Implementation of Construction Projects

Published Online: 11 Dec 2014
Page range: 65 - 75

Abstract

Abstract

The present paper uses the developed model of the influence of partnering relations on the time, cost, quality and safety of implementation of construction projects. On its basis, a questionnaire has been created and a preliminary survey has been conducted. The paper presents an analysis of correlations between the level of partnering relations in the context of the partnering measures indicated in the model and their influence on the time, cost, quality and safety of implementation of construction projects. The analysis was conducted based on the data collected in 52 construction projects. The values of the Spearman rank correlation coefficient and the Pearson product-moment correlation coefficient have been calculated for the examined relations. The analysis allowed for indicating the measures of partnering whose improvement most often brings benefits with regard to the time, cost, quality and safety of implementation of construction projects. Among the 80 analysed correlations, the ones identified as strong were: 15 relations connected with the time, 8 with the cost, 5 with the quality and 1 with the safety of implementation of construction projects.

Keywords

  • construction industry
  • correlation
  • partnering relations
  • survey research
Open Access

Remedial Method against Moisture Problems – Church of St. Abdon and Sennen in Gemersky Jablonec

Published Online: 11 Dec 2014
Page range: 77 - 84

Abstract

Abstract

Moisture is a major source of damage in historic solid masonry. Rising damp is a well-known phenomenon around the world and occurs when groundwater flows into the base of a construction and is allowed to rise through the pore structure. From practical experience it is known that many factors may play a role regarding permeability problems in masonry. The amount of possible causes of moisture problems in historic masonry underlines the complexity of this phenomenon. Evaporation is an important factor in rising damp. The surface of an affected wall contains moisture that has risen from the ground and this moisture is then subject to evaporation. The factors controlling evaporation include: temperature, humidity, air movement and surface.

Keywords

  • rising damp
  • ventilation of air channel
  • drainage
  • historical building
  • masonry
Open Access

The Methodology of Interactive Parametric Modelling of Construction Site Facilities in BIM Environment

Published Online: 11 Dec 2014
Page range: 85 - 96

Abstract

Abstract

Information technology is becoming a strong tool in different industries, including construction. The recent trend of buildings designing is leading up to creation of the most comprehensive virtual building model (Building Information Model) in order to solve all the problems relating to the project as early as in the designing phase. Building information modelling is a new way of approaching to the design of building projects documentation. Currently, the building site layout as a part of the building design documents has a very little support in the BIM environment. Recently, the research of designing the construction process conditions has centred on improvement of general practice in planning and on new approaches to construction site layout planning. The state of art in field of designing the construction process conditions indicated an unexplored problem related to connection of knowledge system with construction site facilities (CSF) layout through interactive modelling. The goal of the paper is to present the methodology for execution of 3D construction site facility allocation model (3D CSF-IAM), based on principles of parametric and interactive modelling.

Keywords

  • construction site layout
  • construction site facility
  • BIM model
  • parametric modelling
  • interactive modelling
Open Access

Analysis of the Solar Radiation Impact on Cooling Performance of the Absorption Chiller

Published Online: 11 Dec 2014
Page range: 97 - 106

Abstract

Abstract

Absorption cooling at low power is a new technology which has not yet been applied to current conditioning elements. This paper analyzes the various elements of solar absorption cooling. Individual states were simulated in which working conditions were set for the capability of solar absorption cooling to balance heat loads in the room.

The research is based on an experimental device (absorption units with a performance of 10kW) developed at the STU in Bratislava (currently inputs and outputs of cold sources are being measured). Outputs in this paper are processed so that they connect the entire scheme of the solar absorption cooling system (i.e. the relationship between the solar systems hot and cold storage and the absorption unit).

To determine the size of the storage required, calculated cooling for summer months is considered by the ramp rate of the absorption unit and required flow rate of the collectors.

Keywords

  • solar radiation
  • cooling power absorption unit

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