Risk-Based Decision-Making for Multi-Hazard Mitigation for Wood-Frame Residential Construction

2009 ◽  
Vol 9 (1) ◽  
pp. 17-26 ◽  
Author(s):  
Y Li ◽  
B R Ellingwood
Author(s):  
Meng Wang ◽  
SangJun Ahn ◽  
Youyi Zhang ◽  
Mohammed Sadiq Altaf ◽  
Mohamed Al-Hussein ◽  
...  

Offsite construction methods have been promoted and recognized globally as advanced construction techniques. Panelization, a two-dimensional form of offsite construction has brought about many benefits including lower transportation requirements and design flexibilities. In North America, the panelized construction technique has become popular particularly for wood-frame wall panels for residential construction. However, although utilizing this advanced construction method can greatly improve the working environment and productivity, the conventional mentality in construction, which overlooks the value of an automated management system to support offsite prefabrication and onsite installation, hinders its potential. An automatic material estimation system can capture all computer-aided design (CAD) data from building information modeling (BIM) files automatically and convert them into enterprise resource planning (ERP) readable data so that the ERP system can be updated for the purpose of material estimation. With the assistance of a feature-based modeling method, the proposed automatic material estimation system can save huge amounts of manual work for quantity take-off and all required CAD data can be captured by the system in a few seconds. Although highly dynamic market demands result in continual changes in design, production plan, schedule, and inventory levels, the adoption of an automatic material estimation system could account for these dynamic changes in order to maximize production. Therefore, in this paper, an automatic material estimation system is proposed in order to enhance the design and estimation process in the manufacturing environment. The proposed system is introduced and the development of supportive software is described. The proposed system is implemented as a case study in a panelized construction manufacturing facility, ACQBUILT, Inc., based in Edmonton, Alberta, Canada.


2021 ◽  
Vol 6 ◽  
Author(s):  
Fatemeh Orooji ◽  
Carol J. Friedland

As a result of increasing windstorm losses in the United States over the past 50 years, a variety of residential wind hazard mitigation strategies have been recommended. Wind hazard mitigation undoubtedly reduces windstorm losses; however, little customized information is available to support the economic decision-making process for individual stakeholders, especially at the consumer level. Therefore, there is a need for decision support tools to calculate, evaluate, and present the economic benefits of mitigation over variable decision-making time horizons for unique building characteristics in specific geographical locations. This paper presents a cost-benefit computational decision-making recommendation framework that evaluates and presents the cost effectiveness of mitigation, customized based on location, years of interest, and building characteristics. The decision-making framework consists of two cores. The user-independent core and user-dependent core which consists of eight steps, divided into four subprocesses: (1) data acquisition, (2) data evaluation, (3) cost-benefit calculation, and (4) results comparison and decision making. To demonstrate the framework, a wood-framed single-family home in light suburban terrain in Golden Meadow, Louisiana, is used as a case study, considering retrofit mitigation with a $15,000 budget and a decision-making time horizon of 30 years. The case study provides six mitigation options, with cost ranging between approximately $2,000 and $15,000 and net benefit/cost ratios ranging from 2.4 to 13. Once fully implemented in a decision making information tool, the developed mitigation recommendation framework will provide valuable information that can be used by home designers, builders, owners, and other stakeholders to better understand the economic facets of wind hazard mitigation, providing critical information as part of the overall decision-making process.


2013 ◽  
Vol 689 ◽  
pp. 86-89
Author(s):  
Masitah Binti Zulkepli ◽  
Ibrahim Bin Sipan ◽  
Jibril Danazimi Jibril

In recent years, interests and activities related to green building has increased. As stakeholders such as builders, architects, and developers have moved towards implementing green building criteria and sub criteria of energy efficiency and the greater usage of reuse and recycled materials in developing homes. The benefits of this transition also influenced the development of affordable homes. In Malaysia, green building for new residential construction consists of six criteria. However the green building criteria are not focusing on affordable home as in Green Communities in US, Eco Homes in UK and Ecocents Living in Australia. Indeed, they have their own green criteria and sub criteria as a means and guidelines for green affordable home development. This paper aims to perceive the criteria and sub criteria of green building which correspond to the types of affordable home in respect to local condition within Malaysia. This research will utilize the Delphi Hierarchy Process (DHP) methodology which integrates the delphi method with the analytic hierarchy process. It assists the expert panels to systematically identify the green affordable home criteria and sub criteria. The findings proposed in this research will be DHP decision model for green affordable home in Malaysia as a tool for decision making for developers in green affordable home development. It is hoped that this study will help to cater the issues of affordable homes as well as environmental with implementation of green building criteria and sub criteria into affordable home in Malaysia.


2014 ◽  
Vol 8 (1) ◽  
pp. 143-153 ◽  
Author(s):  
Joseph A. Standley ◽  
Ali M. Memari

A new type of transparent panelized wall system for residential construction has recently been developed that can be used as an alternative to typical wood-frame and other light-frame wall systems. The new wall system is a prefabricated wall panel consisting of a structural steel back-up frame, transparent polycarbonate sheathing, and a curtain-wall system that may contain an integrated photovoltaic glazing panel. In this paper, after an introduction to the structural and architectural aspects of system, the thermal and energy performance aspects of this wall system are evaluated based on several criteria. The current configuration of the wall system shows an overall U-factor of 1.585 W/m2k. The material and systems analysis using a combination of life-cycle assessment and embodied energy are discussed as well. The embodied energy of the system turns out to be approximately two and a half times that of conventional wood-frame system. The paper provides some concluding remarks regarding the sustainability aspects.


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