Anchoring Systems for Architectural Terra Cotta in Curtain-Wall Construction

A reliable estimation of the tender prices for lightweight curtain walls is a complex and time-consuming process for the contractor, as it depends on many factors related to both the technical parameters of the designed façade and the investor’s requirements for the solutions selected. The aim of the paper is to identify the factors affecting the costs of manufacturing lightweight curtain walls. Data regarding the complexity of curtain wall construction costs was obtained on the basis of the analysis of project documentation, cost estimates and as-built accounts for selected 50 public buildings. The authors identified the factors affecting the costs of aluminum-glass facades and ventilated facades. Their identification is the first element necessary to develop a new method of predicting the costs of implementation of such types of facade which are included in the authors’ research plans.

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BP neural network model on choice of project manger for building curtain wall construction

2011 International Conference on Electric Technology and Civil Engineering (ICETCE) ◽

10.1109/icetce.2011.5774800 ◽

2011 ◽

Author(s):

Gao Yongtao ◽

Liu Fengmin

Keyword(s):

Neural Network ◽

Network Model ◽

Neural Network Model ◽

Bp Neural Network ◽

Curtain Wall ◽

Wall Construction ◽

Bp Neural Network Model

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Framework for the validation of simulation-based productivity analysis: focused on curtain wall construction process

Journal of Civil Engineering and Management ◽

10.3846/13923730.2014.992468 ◽

2016 ◽

Vol 23 (2) ◽

pp. 163-172 ◽

Cited By ~ 4

Author(s):

Seungwoo HAN ◽

Yong-Ho KO ◽

Taehoon HONG ◽

Choongwan KOO ◽

Sangyoub LEE

Keyword(s):

Construction Projects ◽

T Test ◽

Construction Process ◽

Productivity Analysis ◽

Curtain Wall ◽

Significance Level ◽

Productivity Data ◽

Significant Difference ◽

Simulation Based ◽

Wall Construction

As construction projects have become more complicated in design and construction, it is necessary to establish the construction operational plans in advance. However, there were some limitations in analyzing construction productivity due to the difficulty of collecting accurate data. To address this challenge, this study aimed to develop the framework for the validation of simulation-based productivity analysis, which consisted of three measures: (i) validation of the measured productivity data as target variable; (ii) validation of the measured duration data as input variable; and (iii) validation of the simulation model compared to the actual construction process. To verify the feasibility of the proposed framework, this study focused on the curtain wall construction project of “S” office building as a case study. The T-test was applied to investigate the statistical difference between the measure and simulated productivity. It was determined that the significance level α in the T-test for the unloading process was 0.136 with 95% confidence interval; the lifting process, 0.106; and the installing process, 0.311. As a result, there was no significant difference between the measured and simulated productivity. The proposed framework could enable executives and managers in charge of project planning and scheduling to accurately predict the simulation-based productivity.

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Quantitative Comparisons of Construction Productivity of Curtain Wall Operations in High-Rise Buildings by Means of Simulation Techniques

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.250-253.3577 ◽

2011 ◽

Vol 250-253 ◽

pp. 3577-3580 ◽

Cited By ~ 2

Author(s):

Tae Hee Lee ◽

Hyun Mi Kim ◽

Yong Ho Ko ◽

Seung Woo Han

Keyword(s):

Construction Projects ◽

Process Model ◽

Performance Comparison ◽

Construction Sites ◽

Curtain Wall ◽

Construction Productivity ◽

High Rise ◽

Simulation Techniques ◽

Literature Reviews ◽

Wall Construction

The paper presents construction performance comparison of curtain wall operations. It is well known that curtain wall operations are major parts of high-rise construction projects. Literature reviews of high-rise buildings and curtain wall operations lead the study to focus on a unit system which has been widely applied in the domestic high-rise curtain wall construction. Data was collected by recording in actual curtain wall construction sites and simulation model was implemented for the quantitative comparison between the simulation value and the value of actual curtain wall construction sites. It is expected that this proposed study contributes to the further studies of developing an optimized assembling process model for engineers and site personnel in construction.

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