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 consequentl
y 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.
This researchdeals with the topic of controlling the cost of concrete bridge projects in
the early design phase. The research aims at using cost controlling as an auxiliary tool for
designing and decision making.Cost control methodology has been pr
oposed based on
modeling the elements of structure, and proposing a method forcost estimate. This method
based on estimating of quantitiesfrom the general parameters of the structure and prices are
being updated periodically.The proposed methodology studiesmany available alternatives
that werechosen by the designer andevaluate thesealternativeseconomically.
Poor design is a major factor in reducing the overall performance of construction projects as well as being directly responsible for many projects cost overrun, delay and being plagued with rework,
variations and disputation.
This research discusse
s the main factors affecting Design Quality in the Construction Industry in Syria.
The result is based on a number of interviews and questionnaire surveys involving 54 designers, contractors and construction professionals. The survey identified 45 different factors classified in
categories related to designer, management of the design process, owner and design documents. The severity of those factors was measured by the level of importance and was ranked according to the
importance index.
It was concluded that, insufficient overall design time, method of selecting the designer based on the lowest price offer, lack of documentation and changes client’s requirements were the most important factors. The results show that designers and contractors have different perceptions of the quality of
design factors.
The aim of this study is to assist all construction parties to plan effectively before starting a project during the design phase in order to minimize problems and eliminate extra costs needed to complete
the defective design. Finally, some recommendations were made in order to improve the design quality in the construction industry.
