lukman review on bim 7 10-2015

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A Review on

BUILDING INFORMATION MODELLING

Presented ByLUKMAN E. MANSURI

1ST SEM. M.E. Construction Engineering & Management

S. N. PATEL INSTITUTE OF TECHNOLOGY & RESEARCH CENTER,

UMRAKH, BARDOLICivil Engineering Department

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CONTENTREPORT: 1

“AN INTRODUCTION TO BUILDING INFORMATION MODELLING”

American Society of Heating Refrigerating and Air-Conditioning Engineers, Inc.

PAPER: 1“THE ASSESSMENT OF CONSTRUCTABILITY:

BIM CASES”Journal of Information Technology in Construction

PAPER: 2“A BIM BASED APPROACH FOR CONFIGURING

BUILDING’S OUTER ENVELOPE ENERGY SAVING ELEMENTS”

Journal of Information Technology in Construction

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REPORT: 1“AN INTRODUCTION TO BUILDING

INFORMATION MODELLING”

Authors: Dave Conover, Charles S. Barnaby

Published By: American Society of Heating Refrigerating and Air-Conditioning Engineers, Inc.1791 Tullie Circle, N.E., Atlanta, Georgia 30329

Year of Publication: 2009

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BASIC TERMINOLOGY

Building Information ModelA Building Information Model is a digital representation of the physical and the functional characteristics of a facility. As such it serves as a shared knowledge resource for information about a facility, forming a reliable basis for decisions during its life cycle from inception onward.

BIM is different from making a drawing in 2-D or 3-D CAD. To create a BIM, a modeler uses intelligent objects to build the model.

Building Information ModelingBuilding Information Modeling is the human activity of using BIM software and other related software, hardware and technologies to create and use in a building information model

3-D BIMSee the definition of Building Information Model. A model that includes three dimensional (3-D) shape information and does not include the 4-D and 5-D characteristics described below.

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BASIC TERMINOLOGY

4-D BIMA 3-D BIM that has objects and assemblies that have schedule and time constraint data added to them. The information can be contained in the BIM or can be linked or otherwise associated (integrated and/or interoperable) with project design and construction activity scheduling and time sensitivity estimating and analysis systems.

5-D BIMA 4-D BIM that has objects and assemblies that have a cost dimension added to them. The cost information can be contained in the BIM or can be linked or otherwise associated to the building objects.

INTILLEGENT OBJECTThe object (or set of objects) represents not only the geometry required to represent the component or assembly graphically (visually) but also has the ability to have much more information about that object associated with it or related to other intelligent objects associated with it.

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PAPER: 1“THE ASSESSMENT OF CONSTRUCTABILITY: BIM

CASES”Authors

Matti K. TauriainenAalto University, School of Engineering, Department of Civil and Structural Engineering, Espoo, Finland.

Jari A. PuttonenProfessor, Aalto University, School of Engineering, Department of Civil and Structural Engineering, Espoo, Finland.

Arto J. SaariProfessor, Aalto University, School of Engineering, Department of Civil and Structural Engineering, Espoo, Finland.

Submitted October 2014

Revised December

2014

Published January 2015 at

http://www.itcon.org/2015/4

Guest Editors Mahdavi A. & Martens B.

Published Bywww.itcon.com, Journal of Information Technology in

Construction ISSN 1874-4753

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CASES”

ABSTRACTThe constructability appraisal methods developed so far are based on evaluating and analyzing the major design components and systems of an entire building, such as structural systems, materials and production techniques.

At first, this paper discusses the current practice of constructability assessment used in Finland and next it introduces an experimental constructability assessment method (ECAM) using building information models (BIM) as a source of constructability information.

KEYWORDSAssessment, Analyses, Buildability, Constructability, Modelling, BIM, Quantitative

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CASES”

INTRODUCTIONAccording to several international research and development articles good constructability improves construction performance, productivity and quality.

The use of building information models (BIM) at the design and construction stages contributes the achievement of the construction objectives of time, cost and quality.

BIM simulates the construction project in a virtual environment. It is possible to make constructability adjustments in the model, and practice construction before it is actualised on a building site.

The objective of the research was the development of the methods for assessing constructability at the design and construction stages of a project with building information models.

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CASES”

RESEARCH QUESTIONS AND METHODS

The research questions were:

1. How did designers, contractor’s site and line managers and engineered-to-order producers assess constructability?

2. How could the constructability be assessed using a building information model as a source of information and an analysis tool? In the second research stage, the pre-evaluation of the usability of BIM in an assessment of constructability was carried out in three case projects.

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CASES”

Research Methodology

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CASES”EXPERIMENTAL CONSTRUCTABILITY

ASSESSMENT METHODOLOGY (ECAM) Constructability factors (CF)

Usability of BIM in an assessment of constructability, pre-evaluation

Fluctuation of foundation, footing, ground and intermediate floor levels (CF1)

Standardization and prefabrication of elements (CF2) The geometry and dimensionality of elements (CF3) Reinforcements in elements (CF4) Formwork for concrete elements (CF5) Holes, slots and penetrations (CF6)

Characteristics of building elements in the structural BIM

Frame types Major structural building elements (sub- and superstructure) Joints and connection parts

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BIM CASES


CASES”

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At present, the assessment of constructability is not very consciously made by designers and contractor’s site and line managers in Finland. The designers experienced that constructability could be assessed within the designing work without any separate assessment method or process. At the early design stage, the assessment is based on designers’ professional skill and experience.

Later at the design development and detailed design stages, contractor’s site and line managers also involved in the constructability review process.

The visual assessment of constructability using integrated BIMs is still cumbersome. This is caused by the missing evaluation criteria and the poorly planned review process in design development and detailed design stages.


CASES”CONCLUSION

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CASES”

The use of clash checking is not enough for constructability analysis in projects and the development of the assessment process will be needed.

The results support the conclusion that the visual inspection with the calculation based screening method is applicable to the BIM-based constructability analysis of buildings and especially structural frames.

In Finland, there is a notable need for the development of an efficient review process for constructability assessment. Construction industry should be encouraged to use the assessment of constructability in projects also as a method for increasing the productivity of the building industry.

In the academic building education the education of constructability should be revised and researches combining constructability and the use of BIM should be encouraged.

CONCLUSION

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AuthorsDr. Mohamed NourAssociate Professor, Architecture Department, Faculty of Fine Arts, Helwan University, Egypt

Dr. Ossama HosnyProfessor, American University in Cairo, Egypt

Dr. Ahmed ElhakeemAssociate Professor, Faculty of Engineering, Helwan University, Egypt

Published Bywww.itcon.com, Journal of Information Technology in

Construction ISSN 1874-4753

Submitted October 2014

Revised December

2014

Published January 2015 at

http://www.itcon.org/2015/4

Guest Editors Kirti R.

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ABSTRACTThis study introduces a novel approach to configuring buildings' outer envelopes with the objective of optimizing Life Cycle Cost.

This approach is based on the assumption that not all building elements constituting the outer envelope are subjected to the same amount of thermal transmission losses or solar radiation.

Therefore, an optimization approach based on segmenting external facades and roofs into independent objects in a building information model was developed.

The developed approach is applied to a case study of a desert building in Egypt.



KEYWORDSBIM, Life Cycle Cost, Energy, Optimization, Genetic Algorithm, Segmentation

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INTRODUCTIONThe early design phase of a building has a substantial influence on all of its subsequent phases and particularly to the overall Life Cycle Cost (LCC) of the project.

Minor modifications to the early design can have significant impacts on LCC that can extend beyond the simple calculation of initial cost of the building.

This applies when considering the increasing demand for energy consumption.

Traditionally, systems and building designs are evaluated on the basis of their initial investment cost, neglecting other costs such as operation, maintenance and repair, In addition to initial constructioncosts, the lifecycle cost of a building covers the cost of repair, maintenance, utilities and those of the energy required to operate the building

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BUILDING’S OUTER ENVELOPE ENERGY SAVING ELEMENTS”METHODOLOGY

This study depends on open technologies and standards like BIM-IFC ISO 1030 STEP standard and EngergyPlus.

Both of them are open technologies that are independent from any commercial proprietary technologies like (Bentley , AutoDESK, Graphisoft) or any other commercial software application.

Revit is used as a BIM authoring tool only once at the initial design stage for a single export of a STEP ISO 10303 physical file, and then the evolution of the BIM model continues in the IFC format.

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The combinatorial nature of the optimization problem

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A perspective of the case study showing the orientation selection and building outer envelope configuration options

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CONCLUSIONThis study outlined the development of a novel approach to selecting and allocating energy saving systems (elements and materials) and then assigning them certain locations on a building’s outer envelope with the objective of optimizing the building’s Life Cycle Cost (LCC).

The allocation and assignment are based on the fact that a building’s elements or segments constituting the outer envelope (skin) are not all subject to identical thermal loads.

This study is based on the optimization of individual BIM objects / segments formulating the outer facades of a building with no restriction on using a single type of windows or wall segments on the same facade.

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CONCLUSION

Most of the research efforts up to date try to carry out the optimization using the same type of elements at least on the same façade.

The paper also confirms the sensitivity of LCC to energy costs, where future forecasts of energy prices are crucial and must be considered in optimization and payback analysis studies to achieve an appropriate decision making process regarding future investments in energy saving building elements.

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REFERENCES

1. Matti K. Tauriainen, Jari A. Puttonen, Arto J. Saari (2015). The assessment of constructability: BIM cases. Journal of Information Technology in Construction (ITcon), Special Issue: ECPPM 2014, Vol. 20, pg. 51-67, http://www.itcon.org/2015/4

2. Mohamed Nour, Ossama Hosny, Ahmed Elhakeem (2015). A BIM based approach for configuring buildings’ outer envelope energy saving elements. Journal of Information Technology in Construction (ITcon), Vol. 20, pg. 173-192, http://www.itcon.org/2015/13

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Questions ?

Thanks for your Attention

lukman review on bim 7 10-2015

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