RESTORATION OF MAINTENACE CONDITIONS OF BRICK WALLS

2013 ◽  
Vol 3 (3) ◽  
pp. 70-72 ◽  
Author(s):  
O. A LUNEVA ◽  
E. V AVER'YaNOVA
Keyword(s):  
Bearing Capacity ◽  
Economic Efficiency ◽  
Crack Formation ◽  
Selection Procedure ◽  
Contrastive Analysis ◽  
Restoration Techniques

The issue of selection procedure of brick walls bearing capacity restoration means is considered in the article. As the result of maintenance conditions complex surveying certain cases of crack formation caused by a number of structural faults have been discovered. A contrastive analysis of restoration techniques is presented from the standpoint of economic efficiency and time expenditure on work execution.

The Experimental Research and Contrastive Analysis on the Attachments of Semi-Rigid Nodes in the Beam-Column T-Typed Member and End Plate of Steel Frame

2011 ◽  
Vol 243-249 ◽  
pp. 1163-1167
Author(s):  
Zhen Xing Gao ◽  
Ling Xu
Keyword(s):  
Bearing Capacity ◽  
Experimental Research ◽  
Steel Structures ◽  
Steel Frame ◽  
Contrastive Analysis ◽  
Experimental Basis ◽  
End Plate ◽  
The Ideal ◽  
Design And Application

Based on the connection tests of the semi-rigid nodes in the beam-column T-typed member and end plate of steel frame, this paper analyzes the failure phenomena, stiffness, bearing capacity and flexibility of two types of attachments. And according to the tests results, it compares the two types of attachments each other and proposes that T-typed member is a better type of attachment on its bearing capacity and flexibility. Therefore, it provides the experimental basis for the ideal design and application of attachments among the semi-rigid nodes in steel structures.

Experimental Studies of the Crack Formation Moment of Reinforced Concrete Beams

2019 ◽  
Vol 968 ◽  
pp. 248-257
Author(s):  
Svetlana Romanenko ◽  
Yanina Andriievska
Keyword(s):  
Life Cycle ◽  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Crack Formation ◽  
Concrete Beams ◽  
Experimental Studies ◽  
Reinforced Concrete Beams ◽  
Main Task ◽  
Entire Life ◽  
Entire Life Cycle

The main task of construction is providing buildings with the property to remain operable throughout the entire life cycle. The level of bearing capacity, both of individual structures and buildings as a whole, depends on many factors.

CRACK STRENGTH OF HOLLOW CORE SLABS: EXPERIMENTAL RESEARCH

2019 ◽  
Vol 16 (3) ◽  
pp. 366-377
Author(s):  
V. M. Mitasov ◽  
N. V. Statsenko ◽  
F. K. Sametov ◽  
A. M. Kurbonov
Keyword(s):  
Crack Formation ◽  
Breaking Load ◽  
Hollow Core ◽  
Contrastive Analysis ◽  
Limit Group ◽  
Short Term ◽  
Operational Load ◽  
Load Action ◽  
Traditional Manufacturing ◽  
Manufacturing Stage

Introduction. The paper presents the results of research that allow assessing the degree of influence of pre-organized cracks on the character crack formation and on the process of the hollow-core slabs’ deformation under short-term load action.Materials and methods. The hollow-core slabs are made without prestressing – one by traditional technology, the second with pre-organized cracks in the manufacturing process. Physical experiment performed on fall-scale structure of hollow-core slabs of П66.10-81500СП. The authors conducted the tests to the calculated breaking load. Moreover, the authors presented the contrastive analysis of character crack formation and of the hollow-core slabs’ deformation of П66.10-8А500СП traditional manufacturing and with pre-organized cracks.Results. As a result, the authors confirmed the earlier hypotheses about the greater rigidity of plates with pre-organized cracks in comparison with the plates where the cracks arose stochastically and under operational load. The installation of organized cracks did not reduce the bearing capacity, thus, reduced the deformability. Therefore, the width of the crack became smaller and the deflections became less.Discussion and conclusions. In the structures of long length, which are rejected by the second limit group, the organization of cracks at the manufacturing stage allows not putting additional reinforcement to reduce the width and deflection of the crack.

Method for forecasting residual life of catenary poles

2021 ◽  
pp. 93-98
Author(s):  
Valeriy Nikolaevich Li ◽  
◽  
Lyudmila Sergeevna Demina ◽  
Sergey Anatolyevich Vlasenko ◽  
◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Fatigue Life ◽  
Bearing Capacity ◽  
Crack Formation ◽  
Residual Life ◽  
Simulation Software ◽  
Software Environment ◽  
Fatigue Effect ◽  
Fatigue Characteristics

The paper proposes a method for forecasting residual life of reinforced concrete catenary poles based on the calculation of fatigue characteristics in SolidWorks Simulation software environment. With the consideration for additional factors of crack formation the authors have gained the fatigue (life) curve of the catenary pole and have determined positions and elements that are the most susceptible to fatigue effect. On the basis of the data gained the authors have developed a method for determining a residual bearing capacity by a special nomogram. As a result, the authors have formed an order of carrying out monitoring of reinforced concrete catenary poles.

scholarly journals Economic efficiency of vibroreinforced soil-cement piles implemented in construction

2018 ◽  
Vol 2 (51) ◽  
pp. 97-101
Author(s):  
Oleksandr Novytskyi ◽  
Tetіana Nesterenko
Keyword(s):  
Bearing Capacity ◽  
Economic Efficiency ◽  
Economic Effect ◽  
Field Tests ◽  
Residential Building ◽  
Reinforced Soil ◽  
Implementation Effectiveness ◽  
Soil Cement ◽  
Bored Piles ◽  
Economic Comparison

The results of the executed economic comparison of foil-cement piles reinforcement use by vibroreinforced - vibroreinforced soil-cement piles are presented. The comparison is based on the results of piles bearing capacity by field tests. Considering the results of field tests two variants of piles foundation have been designed for residential building. Economical comparison is made for implementation effectiveness of reinforced and non-reinforced soil-cement piles at the piles calculated bearing capacity on the soil that is greater than the calculated bearing capacity by the material. .Economical comparison is made for implementation effectiveness of vibrated vibroreinforced soil-cement piles and bored piles at their calculated bearing capacity by the material at times greater than that on the soil. The obtained results and the determined economic effect are analyzed. The results of comparison are used for design and implemented in construction.

Construction and Validation of a Short Adjectives Checklist to Measure Big Five (SACBIF)

1996 ◽  
Vol 12 (1) ◽  
pp. 33-42 ◽  
Author(s):  
Marco Perugini ◽  
Luigi Leone
Keyword(s):  
Construct Validity ◽  
Psychometric Properties ◽  
Big Five ◽  
Factor Model ◽  
Five Factor Model ◽  
Selection Procedure ◽  
Factorial Structure ◽  
Personality Dimensions

The aim of this contribution is to present a new short adjective-based measure of the Five Factor Model (FFM) of personality, the Short Adjectives Checklist of BIg Five (SACBIF). We present the various steps of the construction and the validation of this instrument. First, 50 adjectives were selected with a selection procedure, the “Lining Up Technique” (LUT), specifically used to identify the best factorial markers of the FFM. Then, the factorial structure and the psychometric properties of the SACBIF were investigated. Finally, the SACBIF factorial structure was correlated with some main measures of the FFM to establish its construct validity and with some other personality dimensions to investigate how well these dimensions could be represented in the SACBIF factorial space.

Using the Theory of Planned Behavior to Predict Faking in Selection Exercises Varying in Fidelity

2018 ◽  
Vol 17 (3) ◽  
pp. 155-160 ◽  
Author(s):  
Daniel Dürr ◽  
Ute-Christine Klehe
Keyword(s):  
Theory Of Planned Behavior ◽  
Planned Behavior ◽  
Predictive Validity ◽  
Group Discussion ◽  
Role Play ◽  
Selection Procedure ◽  
High Fidelity ◽  
Selection Research ◽  
Play Group

Abstract. Faking has been a concern in selection research for many years. Many studies have examined faking in questionnaires while far less is known about faking in selection exercises with higher fidelity. This study applies the theory of planned behavior (TPB; Ajzen, 1991 ) to low- (interviews) and high-fidelity (role play, group discussion) exercises, testing whether the TPB predicts reported faking behavior. Data from a mock selection procedure suggests that candidates do report to fake in low- and high-fidelity exercises. Additionally, the TPB showed good predictive validity for faking in a low-fidelity exercise, yet not for faking in high-fidelity exercises.

Predictive Validity of a Selection Procedure for Air Traffic Controller Trainees

2013 ◽  
Vol 3 (1) ◽  
pp. 19-27 ◽  
Author(s):  
Yvonne Pecena ◽  
Doris Keye ◽  
Kristin Conzelmann ◽  
Dietrich Grasshoff ◽  
Peter Maschke ◽  
...  
Keyword(s):  
Predictive Validity ◽  
Selection Procedure ◽  
Air Traffic ◽  
Performance Criteria ◽  
Training Phase ◽  
Air Traffic Controller ◽  
Training Performance ◽  
Navigation Service ◽  
German Aerospace ◽  
Training Success

The job of an air traffic controller (ATCO) is very specific and demanding. The assessment of potential suitable candidates requires a customized and efficient selection procedure. The German Aerospace Center DLR conducts a highly selective, multiple-stage selection procedure for ab initio ATCO applicants for the German Air Navigation Service Provider DFS. Successful applicants start their training with a training phase at the DFS Academy and then continue with a unit training phase in live traffic. ATCO validity studies are scarcely reported in the international scientific literature and have mainly been conducted in a military context with only small and male samples. This validation study encompasses the data from 430 DFS ATCO trainees, starting with candidate selection and extending to the completion of their training. Validity analyses involved the prediction of training success and several training performance criteria derived from initial training. The final training success rate of about 79% was highly satisfactory and higher than that of other countries. The findings demonstrated that all stages of the selection procedure showed predictive validity toward training performance. Among the best predictors were scores measuring attention and multitasking ability, and ratings on general motivation from the interview.

Identifying Measurement Invariant Item Sets in Cross-Cultural Settings Using an Automated Item Selection Procedure

Methodology ◽  
2018 ◽  
Vol 14 (4) ◽  
pp. 177-188 ◽  
Author(s):  
Martin Schultze ◽  
Michael Eid
Keyword(s):  
Measurement Invariance ◽  
Optimal Solution ◽  
Selection Procedure ◽  
Cross Cultural ◽  
Item Selection ◽  
Ant System ◽  
Item Quality ◽  
Ant System Algorithm ◽  
Selection For ◽  
Selection Of

Abstract. In the construction of scales intended for the use in cross-cultural studies, the selection of items needs to be guided not only by traditional criteria of item quality, but has to take information about the measurement invariance of the scale into account. We present an approach to automated item selection which depicts the process as a combinatorial optimization problem and aims at finding a scale which fulfils predefined target criteria – such as measurement invariance across cultures. The search for an optimal solution is performed using an adaptation of the [Formula: see text] Ant System algorithm. The approach is illustrated using an application to item selection for a personality scale assuming measurement invariance across multiple countries.

Container Port Production and Economic Efficiency

2005 ◽  
Author(s):  
Teng-Fei Wang ◽  
Kevin Cullinane ◽  
Dong-Wook Song
Keyword(s):  
Economic Efficiency ◽  
Container Port
Sign in / Sign up

Export Citation Format

Share Document