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Register a new userComparing Building Information Modeling (BIM) System With Traditional CAD System in Design Phase
مقارنة استخدام نظام نمذجة معلومات البناء بأنظمة الكاد التقليدية في مرحلة التصميم
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تعتبر مرحلة التصميم من أكثر مراحل صناعة التشييد المحلية تأثيراً على تدني مستوى الأداء، كوجود التناقضات بين وثائق التصميم، و ضخامة عدد و مستوى التعديلات مع ما يرافقها من صعوبة في المراحل المتقدمة من التصميم، و التأخر في التسليم، و في بعض الأحيان الفشل في التوصل لأهداف المشروع. يشكل نظام نمذجة معلومات البناء BIM واحدة من الوسائل الفعالة و التي تمتلك العديد من المزايا التي يمكنها أن تساهم في حل هذه المشاكل. و يهدف البحث إلى إظهار فعالية إدخال هذا النظام في مرحلة التصميم، و ذلك بمقارنته مع أنظمة CAD التقليدية. في سياق هذا البحث تم إجراء دراسة لحالات متعددة لمشاريع فعلية تنتمي إلى فئة الأبنية السكنية في مرحلة التصميم للاختصاص المعماري. و قد دلت النتائج التي تم التوصل إليها بأن إدخال نمذجة معلومات البناء BIM في مرحلة التصميم للاختصاص المعماري يمكن له تخفيض الوقت اللازم لإنتاج الوثائق التصميمية بنسبة تصل إلى 75%. تخدم هذه الدراسة كافة الشركات و المؤسسات التصميمية الهندسية في الاختصاص المعماري، و تشجع صناع قرارها كي يشرعوا في استخدام BIM. و تبقى الحاجة موجودة لإجراء مزيد من الدراسات على أنواع أخرى من المباني و لاختصاصات أخرى مثل الإنشائي و الصحي و الميكانيكي و الكهربائي.
Design phase is one of the phases that can largely affects the lowering of performance level, i.e. conflicts in design documents, numerous modifications to be performed and the difficulty that causeatlate stages of the design process, and consequently delay in delivery and sometimes fail to reach the project objectives. Building Information Modeling (BIM) system is one of the effective methodologies that offers many privileges that could take part in solving these problems. The purpose of this study is revealing the influence of implementing BIM in design phase, by comparing it with traditional CAD-based systems. Case studies have been conducted for projects of residential buildings during design phase in architectural part. Findings indicate that implementing BIM in design phase for architectural discipline have shortened the time needed for producing design documents by 75%. This study could be utilized by any company working in the architectural design field, and encourages decision makers to start using BIM. Furthermore there still is a need foran extensive studies to imply other kinds of buildings and more disciplines of AEC industry.
References used
SHEN, Z.; ISSA, R. R. Quantitative evaluation of the BIM-assisted construction detailed cost estimates. ITcon, Vol. 15, 2010, 234-257
KYMMELL, W. Building information modeling: planning and managing construction projects with 4D CAD and simulations. McGraw-Hill New York, 2008, p 270
EASTMAN, C.; TEICHOLZ, P.; SACKS, R.; LISTON, K. BIM handbook: a guide to building information modeling for owners, managers, designers, engineers, and contractors. 2nd ed., Wiley, 2011, p 626
SUCCAR, B. Building information modelling framework: A research and delivery foundation for industry stakeholders. Automation in Construction, Vol. 18, No. 3, 2009, 357-375
KRAUS, W.; WATT, S.; LARSON, P. Challenges in estimating costs using building information modeling. AACE International Transactions, 2007, 11-13
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multidisciplinary collaborative Building Information Models (BIM) environment. Within
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t as tool
for design and decision making.
The proposed method for the management of design changes depends on both
modeling the elements of structure based on BIM and using parameter-based design
structure matrix as tool for Change Management in a way that will support the effective
flow of information between disciplines, and thus reduces design changes, and will be able
to trace a series of successive changes within the BIM environment.
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the information of a commercial building project collected from design engineers.
The proposed method represents the various dependencies between the parameters of
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subsystems in a way that allows to identify the critical parameters and predict some of the
iterative cycles of change to avoid unnecessary rework.
Building maintenance is gaining an increasing attention in the field of scientific
research and there was a need for the use of new technologies in maintenance
management, , as the facility management deal with a large amount of information relatin
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to maintenance, which includes drawings and specifications, lists, and reports, and the use
of paper files leads to decrease the efficiency and create a shortage of data and information.
We offer in this research tool to manage the maintenance process by using the BIM
through linking deterioration models and three-dimensional model of the facility to be
maintained, then compensate the external investigation data for maintenance work in these
models, to get at the end of this research and with the help of the possibilities offered by
Revit database to an upcoming maintenance items and arrange them according to their
importance and impact on the facility , the estimated budget for the periodic maintenance
and distribution of this budget on the various construction elements , the development of
resources plan for next year and up to the knowledge database of maintenance will help in
determining the supplier lifecycle and the coefficient of replacement.
The purpose of research is to build a model of the electric driving system for threephase
squirrel-cage induction motor using oriented electric field method so as to control
both the speed , flux and current, ( PI ) controllers was used .
The mach
ine model has been formed based on the equations of the machine written
in the stationary coordinates .
To complete the process of control without measuring the rotor flux , a model of flux
from the measured values of stator current and rotor speed was build, and it can be
measured directly .
تحتل الدراسات التي تتناول حوسبة اللغة العربية أهمية كبيرة نظراً للانتشار الواسع للغة العربية , و اخترنا في هذه الدراسة العمل على معالجة اللغة العربية من خلال نظام استرجاع معلومات للمستندات باللغة العربية , الفكرة الأساسية لهذا النظام هو تحليل المستن
دات والنصوص العربية و إنشاء فهارس للمصطلحات الواردة فيها , ومن ثم استخلاص أشعة أوزان تعبر عن هذه المستندات من أجل المعالجة اللاحقة للاستعلام و المقارنة مع هذه الأشعة للحصول على المستندات الموافقة لهذا الاستعلام .
من خلال عملية تجريد للمصطلحات الواردة في المستندات تم الحصول على كفاءة استرجاع أفضل , و تعرضنا للعديد من خوارزميات التجريد التي وصلت إليها الدراسات السابقة .
و تأتي عملية عنقدة المستندات كإضافة هامة , حيث يتمكن المستخدم من معرفة المستندات المشابهة لنتيجة البحث و التي لها صلة بـالاستعلام المدخل .
في التطبيق العملي , تم العمل على نظام استرجاع معلومات مكتبي , يقوم بقراءة نصوص ذات أنواع مختلفة و عرض النتائج مع العناقيد الموافقة لها .
This study aimed to describe the water erosion modeling in Daher Aljabal
and its surrounding areas in Al-Sowaida Governorate based on GIA and RS.
The water erosion risk map was obtained by applying GIS model developed on
the basis of ten factors i
nfluencing the erosion process. GIS layers were built
for every factor. The weights for all factors were added together. Based on sum
of these factors, water erosion was divided into six erosion risk levels. Results
showed that 12% of the study area was classified in levels 5 and 6, which reflect
high and very high water erosion risks. Land topography was the main factor
in water soil erosion. Terraces are effective ways to decrease the water soil
erodability. Results also showed that GIS and RS were powerful tools in water
erosion risk assessment mapping.
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