scholarly journals Analysis of load bearing structure of selected hall buildings

2019 ◽  
Vol 284 ◽  
pp. 09005
Author(s):  
Sławomir Onopiuk ◽  
Adam Stolarski
Keyword(s):  
Heavy Rainfall ◽  
Drainage System ◽  
Design Stage ◽  
Direct Result ◽  
Construction Process ◽  
Roof Structure ◽  
Under Construction ◽  
Bearing Structure ◽  
Construction Works ◽  
Correct Design

In this paper the issues associated with correct design of hall buildings has been presented. Large span roof structures require a particularly careful approach to design issues. In this paper examples of two building hall were presented. In the first example, the construction disaster occurred, while in the second of presented buildings due to the changes introduced while construction has been protected against such disaster. The first of the analyzed cause concerns storage hall, whose roof structure has been destroyed due to heavy rainfall. The main cause of this disaster was the malfunction of vacuum roof drainage system compounded by a number of design errors. Mentioned errors were not eliminated, during construction, despite the additional investor supervision, which was independent of parties involved in a construction process. The second case concerns the structure of a sports hall, which was built next to the existing school. Under construction of the hall building, the contractor and the supervision inspector, in conjunction with the designer, introduced a number of modifications of the structure to prevent the disaster. These modifications were a direct result of errors at the design stage, which were eliminated under the construction works. Based on analyzed cases, the scope of diagnostics, which should be performed during the operation of hall buildings with large roof areas, was determined.

scholarly journals THE ITALIAN LEGISLATION ON PROJECT VALIDATION

2015 ◽  
Vol 2 (1) ◽  
Author(s):  
Arie Gottfried ◽  
Antonio C. Devito ◽  
Paolo Piantanida
Keyword(s):  
Public Works ◽  
Design Stage ◽  
Construction Process ◽  
Public Building ◽  
The Public ◽  
Public Work ◽  
Presidential Decree ◽  
Weak Points ◽  
Italian Legislation ◽  
Construction Works

Italy, first in Europe, introduced mandatory validation in building public works: the first years experienced some issues leading to a general updating of the national legislation, differentiating the project verification from the project validation. The former is a formal stage of the construction process committed to the Public Authority (through the Overall Procedure manager), the latter can usefully be performed by an external authority and involves systematic project examination and contractual documentation monitoring. The research critically approaches the modifications in the last decades on public work legislation, from the aged Merloni Act to the current Presidential Decree no. 207/2010. The paper focuses on the improvements on public building in design stage because of the mandatory validation. It also describes how some weak points have been solved and those that are still present in the Italian legislation. Particular attention is given to construction works below a certain threshold of amount.

Study on Implementation of ITK Campus Drainage Master Plan (Case Study: Faculty of Mathematics and Natural Sciences)

2021 ◽  
Vol 104 ◽  
pp. 47-56
Author(s):  
Rossana Margaret Kadar Yanti ◽  
Oryza Lhara Sari ◽  
Rizjal Wahyu
Keyword(s):  
Teaching And Learning ◽  
Drainage System ◽  
Natural Sciences ◽  
Learning Activities ◽  
Master Plan ◽  
Institute Of Technology ◽  
Under Construction ◽  
Runoff Discharge ◽  
Technology Area

Two main building Kalimantan Institute of Technology was established on an area of 3500 m2 on October 6, 2014 which serves as the infrastructure for teaching and learning activities of students. The rapid increase in the number of students each year results in an increase in the number of buildings as facilities for teaching and learning. This is the background for the development of the Kalimantan Institute of Technology area by adding five more lecture buildings to support teaching and learning activities for 3500 students. The expansion area for five more lecture buildings is currently under construction in the area of ​​the Faculty of Mathematics and Natural Sciences. The function of the land area has been change due to building construction resulted in an increase in runoff discharge. This condition certainly affects the region if not handled properly. Increased runoff discharge will affect inundation or flooding in the area if it is not equipped with a drainage system as needed. This research is one alternative solution given. This research is in the form of a study on the implementation of a drainage master plan that aims to obtain drainage dimensions such as drainage width, drainage length and drainage depth by observing runoff due to rainwater using the concept of environmentally friendly drainage. The research obtained from the dimensions of tertiary canals with dimensions of 0.10-0.30 meters, secondary channels 0.30-0.45 meters and primary channels 0.35-0.70 meters with the discharge area of ​​the Faculty of Mathematics and Natural Sciences ITK is 1.18 m3/ sec.

scholarly journals Status of NICA

2018 ◽  
Vol 182 ◽  
pp. 02063 ◽  
Author(s):  
Vladimir Kekelidze ◽  
Alexander Kovalenko ◽  
Richard Lednicky ◽  
Victor Matveev ◽  
Igor Meshkov ◽  
...  
Keyword(s):  
High Energy Physics ◽  
Nuclear Research ◽  
High Energy ◽  
Design Stage ◽  
Target Area ◽  
Baryonic Matter ◽  
Accelerator Facility ◽  
Polarized Protons ◽  
The Status ◽  
Under Construction

The NICA (Nuclotron-based Ion Collider fAcility) is the new international research facility under construction at the Joint Institute for Nuclear Research (JINR) in Dubna. The main targets of the facility are the following: 1) study of hot and dense baryonic matter at the energy range of the maximum baryonic density; 2) investigation of nucleon spin structure and polarization phenomena; 3) development of JINR accelerator facility for high energy physics research based on the new collider of relativistic ions from protons to gold and polarized protons and deuterons as well with the maximum collision energy of sqrt(sNN) ~11GeV (Au79+ +Au79+) and ~ 27 GeV (p+p). Two collider detector setups MPD and SPD are foreseen. The setup BM@N (Baryonic Matter at Nuclotron) is commissioned for data taken at the existing Nuclotron beam fixed target area. The MPD construction is in progress whereas the SPD is still at the beginning design stage. An average luminosity of the collider is expected at the level of 1027 cm-2 s-1 for Au (79+) and 1032 cm-2 s-1 for polarized protons at 27 GeV. The status of NICA design and construction work is briefly described below.

scholarly journals Research on Methods to Increase the Effectiveness of Construction Site Management

2017 ◽  
Vol 6 (3) ◽  
Author(s):  
Xi Zhang
Keyword(s):  
Scale Development ◽  
Internal Structure ◽  
Construction Projects ◽  
Quality Standard ◽  
Status Quo ◽  
Construction Site ◽  
Construction Process ◽  
Site Management ◽  
Development Status ◽  
Construction Works

<p>The development of architectural industry has promoted construction’s scale development, and the internal structure is also getting more and more complicated, the development status quo of construction works often decides the increased difficulty of construction, therefore, in order to ensure the effectiveness of the overall construction quality, there is a need to adopt reasonable measures to increase the quality standard of construction site management during construction process, to ensure that construction projects can be completed successfully. This article had made specific discussions regarding methods to increase the effectiveness of construction site management, in hope to provide practical references for specific works in the future.</p>

scholarly journals Characteristics of ground motion and threshold values for colluvium slope displacement induced by heavy rainfall: a case study in northern Taiwan

2016 ◽  
Vol 16 (6) ◽  
pp. 1309-1321 ◽  
Author(s):  
Ching-Jiang Jeng ◽  
Dar-Zen Sue
Keyword(s):  
Slope Stability ◽  
Heavy Rainfall ◽  
Slope Failure ◽  
Drainage System ◽  
Threshold Value ◽  
Slope Instability ◽  
Disaster Prevention ◽  
Strain Gages ◽  
Slope Displacement ◽  
Northern Taiwan

Abstract. The Huafan University campus is located in the Ta-lun Shan area in northern Taiwan, which is characterized by a dip slope covered by colluvium soil of various depths. For slope disaster prevention, a monitoring system was constructed that consisted of inclinometers, tiltmeters, crack gages, groundwater level observation wells, settlement and displacement observation marks, rebar strain gages, concrete strain gages, and rain gages. The monitoring data derived from hundreds of settlement and displacement observation marks were analyzed and compared with the displacement recorded by inclinometers. The analysis results revealed that the maximum settlement and displacement were concentrated on the areas around the Hui-Tsui, Zhi-An, and Wu-Ming buildings and coincided with periods of heavy rainfall. The computer program STABL was applied for slope stability analysis and modeling of slope failure. For prevention of slope instability, a drainage system and tieback anchors with additional stability measures were proposed to discharge excess groundwater following rainfall. Finally, threshold value curves of rainfall based on slope displacement were proposed. The curves can be applied for predicting slope stability when typhoons are expected to bring heavy rainfall and should be significant in slope disaster prevention.

scholarly journals Status of the NICA project at JINR

2018 ◽  
Vol 191 ◽  
pp. 01003 ◽  
Author(s):  
Alexander Kovalenko ◽  
Vladimir Kekelidze ◽  
Richard Lednicky ◽  
Viktor Matveev ◽  
Igor Meshkov ◽  
...  
Keyword(s):  
High Energy Physics ◽  
Nuclear Research ◽  
High Energy ◽  
Design Stage ◽  
Target Area ◽  
Baryonic Matter ◽  
Accelerator Facility ◽  
Polarized Protons ◽  
The Status ◽  
Under Construction

The NICA (Nuclotron-based Ion Collider fAcility) is the new international research facility under construction at the Joint Institute for Nuclear Research (JINR) in Dubna. The main targets of the facility are the following: 1) study of hot and dense baryonic matter at the energy range of the maximum baryonic density; 2) investigation of nucleon spin structure and polarization phenomena; 3) development of JINR accelerator facility for high energy physics research based on the new collider of relativistic ions from protons to gold and polarized protons and deuterons as well with the maximum collision energy of √SNN ~11GeV (Au79+ +Au79+) and ~ 27 GeV (p+p). Two collider detector setups MPD and SPD are foreseen. The setup BM@N (Baryonic Matter at Nuclotron) is commissioned for data taken at the existing Nuclotron beam fixed target area. The MPD construction is in progress whereas the SPD is still at the beginning design stage. An average luminosity of the collider is expected at the level of 1027 cm-2 s-1 for Au79+ and 1032 cm-2 s-1 for polarized protons at 27 GeV. The status of NICA design and construction work is briefly described below.

scholarly journals Analysis of repair works to remove the effects of structural failure after a gas explosion

2019 ◽  
Vol 284 ◽  
pp. 02002
Author(s):  
Aleksandra Bąk ◽  
Ryszard Chmielewski
Keyword(s):  
Residential Buildings ◽  
Residential Building ◽  
Technical Condition ◽  
Structural Elements ◽  
Structural Failure ◽  
Gas Explosion ◽  
Gas Explosions ◽  
Construction Supervision ◽  
Bearing Structure ◽  
Construction Works

The article presents the issues of repair works in a multi-family residential building, whose structural and non – structural elements have been damaged and destroyed by a gas explosion and the fire. Gas explosions in residential buildings constitute a small percentage of the total number of building disasters, however, due to the relatively large number of injured people, these incidents are very dangerous [1]. Moreover, the gas explosion often leads to significant material losses and fatalities. Proper assessment of the load-bearing structure after such incident requires an extensive knowledge of the behaviour of structures. The first authority, that issues a decision regarding further use is Construction Supervision Inspector. Until the demolition of the object is ordered, the next step is to provide expert report made by an authorized construction expert, whose aim is to assess the technical condition of the elements of the structure and to determine the scope of necessary repair works. Construction expert, who give such opinion during the assessment of objects immediately after such incident, often has limited access to structural elements, moreover these elements often are covered. Hence, the recommendations contained in these reports often do not include all of required construction works.

The RCM Technique Application in NPP Operation and Design Stage

2013 ◽  
Author(s):  
Yang Lifei ◽  
Jiang Hong
Keyword(s):  
Preventive Maintenance ◽  
Early Phase ◽  
Nuclear Safety ◽  
Design Stage ◽  
Safety Regulation ◽  
Positive Role ◽  
Whole Process ◽  
Operation Stage ◽  
Safety And Reliability ◽  
Under Construction

The national nuclear safety regulation commands that the safety, reliability and economy of the NPP must be considered in design and operation stage. In order to reach the goal, the paper firstly introduces how to use the RCM technique to make preventive maintenance programs to ensure the safety and reliability of the NPP which is in service or under construction, and then elaborates how to take the RCM technique into design in the early phase, to promote the safety and reliability of the NPP. It has been considered that RCM technique shows a positive role in the whole process, not only improving the maintenance manage level, but also the safety and reliability at the design stage.

scholarly journals Risk factors for delays in rail investments implemented in the Design & Build contracts

2019 ◽  
Vol 262 ◽  
pp. 07007 ◽  
Author(s):  
Jan Kowalski ◽  
Mieczysław Połoński ◽  
Marzena Lendo – Siwicka
Keyword(s):  
Repeated Measures ◽  
Design Stage ◽  
Professional Experience ◽  
Repeated Measures Anova ◽  
Design Build ◽  
Investment Process ◽  
Causes Of Delays ◽  
Key Participants ◽  
Selection Of ◽  
Construction Works

The article presents the results of nationwide surveys on the causes of delays during the implementation of rail investments in Poland, carried out in the Design & Build formula for the design stage. The study did not examine typical causes of threats to general construction works, only those that result from the specifics of works at rail facilities. The survey was conducted with the participation of experts from various industries, representing all the key participants in the investment process. The selection of experts was limited to people who have extensive professional experience in implementing rail projects. Statistical analyzes were performed using the IBM SPSS Statistics 23 package. It was used to test χ2 and a one-way repeated measures ANOVA. The greatest threats to the deadlines for the implementation of rail investments in Poland, which were indicated by the respondents as the delay threats of a high importance are: negligence in the preparation of tender documents and problems with obtaining current maps for project purposes from rail geodesic centers. The research results can be helpful when planning future rail investments, calculating the necessary time reserves and increasing the reliability of the set dates of their completion.

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