IMPACTS OF CONSTRUCTION RISKS ON COSTS IN LEED-CERTIFIED PROJECTS

2016 ◽  
Vol 11 (4) ◽  
pp. 163-181 ◽  
Author(s):  
Asli Pelin Gurgun ◽  
David Arditi ◽  
Pablo Casals Vilar
Keyword(s):  
Green Building ◽  
Building Design ◽  
Cost Overruns ◽  
Green Building Design ◽  
Cost Impact ◽  
Construction Risks ◽  
Product And Process ◽  
And Performance ◽  
Definition Of ◽  
The Cost

Construction according to green principles rather than traditional methods poses a new set of risks to project participants. These risks should be appropriately identified and managed in order to prevent cost overruns. This study aims to identify construction risks and their cost impacts in LEED-certified projects. For this purpose, thirteen risks were identified based on a literature survey and were categorized under four groups of issues: (i) consultant, contractor and subcontractor, (ii) material, product and process, (iii) legal, regulatory and contractual, and (iv) financial and economic. A survey was then administered to green building design and construction practitioners in the U.S. to assess the likelihood of occurrence of these risks and their respective impacts on project cost. According to the survey results, the risks associated with consultant, contractor and subcontractor issues have the highest expected impact on costs. The top five risk factors were determined as (1) contractors and subcontractors agreeing to standards that are not within their expertise and competence, (2) high cost of certification, (3) lack of expertise in new products/technologies, (4) doubts about the long-term viability and performance of new and untested products, materials and technologies, and (5) inadequate definition of project parties' contractual roles and responsibilities. Mitigating the cost impact of risks is of great value to owners and designers and contractors. Recognizing the risks associated with LEED-certified projects and their cost impacts can be of benefit to all practitioners.

Case Study of Economic Efficiency Evaluation about Green Residential Complex in Korea

2014 ◽  
Vol 935 ◽  
pp. 34-37
Author(s):  
Min Cho Park ◽  
Sang Hyo Lee ◽  
Sung Woo Shin
Keyword(s):  
Life Cycle Cost ◽  
Energy Savings ◽  
Recovery Period ◽  
Green Building ◽  
Building Design ◽  
Building Construction ◽  
Green Building Design ◽  
Operating Profit ◽  
Investment Cost ◽  
The Cost

The national systematic, social requirements for green building development are becoming more stringent. But from the standpoint of the builder, who would contract and implement such a business, such regulations can become a burden working against efforts to promote building. Due to the increase in the initial investment cost associated with green building development, the reality is that voluntary compliance is not readily forthcoming. Thereby, the profitability of green building construction was examined from a cost perspective for a 40-year life cycle cost. As a model example of green apartments, the A Apartment complex was analyzed for its economy. A comparison was made against a standard building for green building design on its initial investment cost, and the energy savings during the occupancy phase, required to offset the cost of investment was calculated. As a result, the A-Apartment investment cost recovery period was approximately 10 years, with about an 8% range of operating profit. If the green building construction business were to be pursued with this long-term view, it is evident that construction of green buildings can be good for business.

A Literature Analysis on Acoustical Environment in Green Building Design Strategies

2013 ◽  
Vol 471 ◽  
pp. 138-142 ◽  
Author(s):  
Nurul Amira Abd Jalil ◽  
Nazli Bin Che Din ◽  
Nila Inangda Manyam Keumala Daud
Keyword(s):  
Natural Ventilation ◽  
Green Building ◽  
Building Design ◽  
Green Buildings ◽  
Working Environment ◽  
Indoor Environmental Quality ◽  
Visual Comfort ◽  
Design Strategies ◽  
Green Building Design ◽  
And Performance

Acoustic quality is important in ensuring a healthy and workable working environment. One of green buildings main objective is to reduce the building impact on human health and performance. This was emphasized in most green building rating system under its requirement for Indoor Environmental Quality (IEQ). IEQ highlights the four main points for achieving an improved indoor environment: indoor air quality, acoustics, visual comfort (lighting) and thermal comfort. Although acoustics was mentioned in the IEQ criteria, according to previous surveys and studies; acoustics quality in green buildings were not improving. It seems as though in order to improve on other green building criteria, acoustics performance is bound to become poorer. Through review of previous literature, survey and studies on acoustical performance in green buildings, the objective of this paper is to identify how green building design strategies contribute to the degradation of acoustical environment in green office buildings. Findings shows that design strategies implemented to cater for other green building requirements such as natural ventilation, daylight, reduction of finishes and office layout have unintentionally decrease the acoustical quality.

Study of Green Building Design Based on Micro-Project in Correlate Urban Ecological Environment

2013 ◽  
Vol 329 ◽  
pp. 51-55
Author(s):  
Da Wei Wang
Keyword(s):  
Green Building ◽  
Building Design ◽  
Evaluation Index System ◽  
Green Building Design ◽  
Improvement Measures ◽  
Complex Ecosystem ◽  
Weak Points ◽  
Urban Complex ◽  
Definition Of ◽  
Ecological Construction

In this paper, by placing buildings in the urban complex ecosystem, the definition of green buildings is analyzed and interpreted. Also, the characteristics of the extensive correlation between buildings and urban ecological system are introduced. The problems that regional characteristics and urban foundations are ignored in the green building evaluation index system are proposed, and also the technical paths for the design of green building indexes are shown. Through the system characteristics of the green building indexes design, the complexity of urban ecological construction and management is revealed, and also the weak points and improvement measures of China's urban ecological construction are analyzed.

Structure Design for Green Building in some Residential Area in Sino-Singapore Tianjin Eco-City

2011 ◽  
Vol 71-78 ◽  
pp. 655-658
Author(s):  
Rong Qin
Keyword(s):  
Energy Saving ◽  
Indoor Environment ◽  
Residential Building ◽  
Green Building ◽  
Building Design ◽  
Residential Area ◽  
Structure Design ◽  
Green Building Design ◽  
Land Saving ◽  
Material Saving

There are six basic control items, land saving, energy saving, water saving, material saving, indoor environment and operation, among which, only material saving are related to structure design. We followed the green building design concept and the control items list in those standards during structure design of one of the residential area in Sino-Singapore Tianjin Eco-city, which consist of 15~18-story residential building connected to a large underground garage, as is shown below.

scholarly journals MANAGEMENT OF GREEN BUILDING DESIGN

2016 ◽  
Vol 11 (39) ◽  
pp. 656-664
Author(s):  
Mohamed Ibrahim ◽  
samara abd elhamed
Keyword(s):  
Green Building ◽  
Building Design ◽  
Green Building Design
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