Guide for Visual Inspection of Structural Concrete Building Components.

1991 ◽  
Author(s):  
Douglas E. Ellsworth ◽  
Keith Ginnado
Keyword(s):  
Visual Inspection ◽  
Structural Concrete ◽  
Concrete Building ◽  
Building Components

Story Damage Identification of Irregular Buildings Based on Earthquake Records

2013 ◽  
Vol 29 (3) ◽  
pp. 963-985 ◽  
Author(s):  
Jer-Fu Wang ◽  
Chi-Chang Lin ◽  
Ging-Long Lin ◽  
Chun-Hao Yang
Keyword(s):  
Damage Assessment ◽  
Visual Inspection ◽  
Damage Identification ◽  
Damage Index ◽  
Analytical Formula ◽  
Mode Shapes ◽  
Severe Damage ◽  
Concrete Building ◽  
Damage Condition ◽  
Identification Techniques

In this paper, a story damage index was developed to evaluate the damage condition of a torsionally coupled building based on its dominant modal frequencies and mode shapes. This index has an analytical formula with a calculated value ranging from 0 (undamaged) to 1.0 (collapsed) to indicate the reduction of story lateral stiffness. The involved computation is simple once the modal parameters of any three modes are obtained through system identification techniques from few floor acceleration measurements. The damage region within a story can also be identified through tracking the change of eccentricity of center of rigidity. This index was verified by numerical simulations and a data analysis of the ASCE benchmark model. In addition, it was also applied to the damage assessment of a four-story reinforced concrete building in Taiwan, which experienced severe damage during the 2006 Taitung Beinan earthquake ( M = 6.2). The results agree fairly well with the visual inspection and show the applicability of the proposed damage assessment technique.

scholarly journals STRUCTURE OF EARTHQUAKE RESISTANT CONCRETE BUILDING WITH DUAL SYSTEM USING SNI 1726: 2019

Neutron ◽  
2020 ◽  
Vol 19 (2) ◽  
pp. 1-9
Author(s):  
Novi Gita Apriliani ◽  
Tony Hartono Bagio
Keyword(s):  
Structural Design ◽  
Dual System ◽  
Main Beam ◽  
Building Structures ◽  
Building Structure ◽  
Structural Concrete ◽  
Earthquake Loads ◽  
Earthquake Resistant ◽  
Concrete Building ◽  
Earthquake Resilience

The higher a building, the greater the burden due to lateral forces. In the planning of the building structure of Apartment 88 Avenue Surabaya, a Dual system is used. This building planning is based on the Structural Concrete Requirements for Buildings (SNI 2847: 2019). And for earthquakes based on Earthquake Resilience Planning Procedures for Building and Non- Building Structures (SNI 1726: 2019 ). In the analysis of earthquake loads using dynamic analysis of the Response Specific Trump. The structure is planned to use reinforced concrete construction. The planning method includes the primary structure, namely the dimensioning and reinforcement of the main beam, and the column. And the secondary structure which consists of dimensioning and reinforcing plates, joists. From the results obtained structural design dimensional beam 35/70 cm ( 5D22; 3D22 ), the joist 30/55 cm ( 2D16; 2D16 ), the floor slab 14 cm thick ( D10-275 )

scholarly journals Layout Optimization Model for the Production Planning of Precast Concrete Building Components

2018 ◽  
Vol 10 (6) ◽  
pp. 1807 ◽  
Author(s):  
Dong Wang ◽  
Guiwen Liu ◽  
Kaijian Li ◽  
Tongjing Wang ◽  
Asheem Shrestha ◽  
...  
Keyword(s):  
Production Planning ◽  
Optimization Model ◽  
Precast Concrete ◽  
Layout Optimization ◽  
Concrete Building ◽  
Building Components

Repair costs of reinforced concrete building components: from actual data analysis to calibrated consequence functions

2020 ◽  
Vol 36 (1) ◽  
pp. 353-377 ◽  
Author(s):  
Ciro Del Vecchio ◽  
Marco Di Ludovico ◽  
Andrea Prota
Keyword(s):  
Reinforced Concrete ◽  
Seismic Design ◽  
Residential Buildings ◽  
Economic Losses ◽  
Computer Tools ◽  
Repair Costs ◽  
Concrete Building ◽  
Damage States ◽  
Building Components ◽  
Simplified Procedures

Modern seismic design and the retrofitting of buildings necessarily need to account for expected economic losses. Available refined and simplified procedures implemented in automatic computer tools allow for probabilistic loss assessments. These mostly rely on consequence functions derived by simulating the repair actions needed to restore a component to its pre-earthquake condition. However, due to the lack of data, only a few studies have benchmarked theoretical loss assessments with actual repair costs monitored in the aftermath of earthquake events. This paper analyses the actual repair costs of a database of 120 reinforced concrete residential buildings damaged by the 2009 earthquake in L’Aquila, Italy. The repair cost distributions and the correlation with observed earthquake damage are provided at the building and component levels. The repair costs of drift- and acceleration-sensitive components are also reported. This study outlines that repairing hollow clay brick infills and partitions that are typical of the Mediterranean construction standard constitutes the majority of total repair costs. Reliable consequence functions calibrated on actual cost data are proposed for different damage states.

scholarly journals Computer-Aided Approach for Rapid Post-Event Visual Evaluation of a Building Façade

Sensors ◽  
2018 ◽  
Vol 18 (9) ◽  
pp. 3017 ◽  
Author(s):  
Jongseong Choi ◽  
Chul Yeum ◽  
Shirley Dyke ◽  
Mohammad Jahanshahi
Keyword(s):  
Visual Inspection ◽  
Region Of Interest ◽  
Visual Evaluation ◽  
High Rise ◽  
Vision Sensors ◽  
Sensing Platforms ◽  
Building Facades ◽  
Building Components ◽  
New Vision ◽  
Geometric Relationship

After a disaster strikes an urban area, damage to the façades of a building may produce dangerous falling hazards that jeopardize pedestrians and vehicles. Thus, building façades must be rapidly inspected to prevent potential loss of life and property damage. Harnessing the capacity to use new vision sensors and associated sensing platforms, such as unmanned aerial vehicles (UAVs) would expedite this process and alleviate spatial and temporal limitations typically associated with human-based inspection in high-rise buildings. In this paper, we have developed an approach to perform rapid and accurate visual inspection of building façades using images collected from UAVs. An orthophoto corresponding to any reasonably flat region on the building (e.g., a façade or building side) is automatically constructed using a structure-from-motion (SfM) technique, followed by image stitching and blending. Based on the geometric relationship between the collected images and the constructed orthophoto, high-resolution region-of-interest are automatically extracted from the collected images, enabling efficient visual inspection. We successfully demonstrate the capabilities of the technique using an abandoned building of which a façade has damaged building components (e.g., window panes or external drainage pipes).

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