scholarly journals Physico-technical measurement of green roof in climate chamber module

2015 ◽  
Vol 10 (1) ◽  
pp. 91-98
Author(s):  
Richard Baláž ◽  
Miloslav Bagoňa
Keyword(s):  
Functional Characterization ◽  
Green Roof ◽  
Climatic Chamber ◽  
Climate Chamber ◽  
Technical Parameters ◽  
Roof Structure ◽  
Technical Measurement

Abstract Not for nothing it is said that "a good roof is priceless." Although it may lead to discussions, which roof is good, because there are a lot of requirements and criteria for the functional characterization. It must be understood that the roof structure defines the durability of the building as a unit, therefore it defines lifetime of other parts of the building and also the function of space that is covered by the roof. Therefore it is very important to pay particular attention to the design, as well as the realization of the roof structure. The aim of this publication is to judge the physical and technical parameters in the design of the roof coating module in a climatic chamber.

scholarly journals Seismic Performance of a Green Roof Structure

2021 ◽  
Vol 13 (8) ◽  
pp. 4278
Author(s):  
Svetlana Tam ◽  
Jenna Wong
Keyword(s):  
Green Roof ◽  
Time History ◽  
Green Roofs ◽  
Moment Frame ◽  
Steel Moment Frame ◽  
Roof Structure ◽  
Nonlinear Time History Analyses ◽  
Vegetated Roofs ◽  
Nonlinear Time History ◽  
The Impact

Sustainability addresses the need to reduce the structure’s impact on the environment but does not reduce the environment’s impact on the structure. To explore this relationship, this study focuses on quantifying the impact of green roofs or vegetated roofs on seismic responses such as story displacements, interstory drifts, and floor level accelerations. Using an archetype three-story steel moment frame, nonlinear time history analyses are conducted in OpenSees for a shallow and deep green roof using a suite of ground motions from various distances from the fault to identify key trends and sensitivities in response.

scholarly journals New green roof and green wall systems for implementation in the coverings

2019 ◽  
Vol 97 ◽  
pp. 06023 ◽  
Author(s):  
Elena Korol ◽  
Natalia Shushunova ◽  
Stepan Rerikh
Keyword(s):  
Graphical Models ◽  
Green Infrastructure ◽  
Green Roof ◽  
Cost Effective ◽  
Labor Intensity ◽  
Variable Model ◽  
Green Wall ◽  
Roof Structure ◽  
Design Flexibility ◽  
Parametric Data

In this article, the approaches to the application of evaluation systems for green buildings to the processes of modeling and designing green infrastructure in the development of the management mechanism of the urban environment, the problems of using green roof technologies are reviewed. The implementation of new green roof and green wall systems requires the accumulation of parametric data for variability in the selection of rational decisions. This study presents new green roof and green wall technologies and describes the main device advantages compared to existing coverings. The study applied the methods of comparative analysis of various options for roofing systems, including landscaping, based on the principles of labor and time savings. The comparison is made of the various indicators of the labor intensity of the covering device, using methods of structural-functional modeling. On the graphical models the identification of the structural separate layers of the roof structure is shown, which clearly represents the variable model according to various indicators of labor intensity. This research presents the new green roof and green wall technologies for implementation in the coverings and describes the main device advantages compared to existing coverings, which designed for simple cost-effective installation and modern urban design flexibility.

scholarly journals MULTISECTIONAL CLIMATE CHAMBER FOR ACCELERATED PRODUCTION OF CULTURAL PLANTS UNDER CONTROLLED PARAMETERS

2021 ◽  
pp. 66-68
Author(s):  
N. I. Lebed ◽  
I. V. Volkov ◽  
M. B. Lebed ◽  
Ya. V. Kalinin
Keyword(s):  
Block Diagram ◽  
Climatic Chamber ◽  
Climate Chamber ◽  
Automated Control ◽  
Controlled Conditions ◽  
Design Options

The analysis of existing technical means for growing plants in controlled conditions of artificial climate is given. The concept of a multi-section climatic chamber is substantiated, design options are proposed, as well as a block diagram of automated control.

scholarly journals Function-Based and Multi-Scale Approach to Green Roof Guidelines for Urban Sustainability Transitions: The Case of Bogota

Buildings ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 151 ◽  
Author(s):  
R. Andrés Ibáñez Gutiérrez ◽  
Mónica Ramos-Mejía
Keyword(s):  
Green Infrastructure ◽  
Ad Hoc ◽  
Green Roof ◽  
Green Roofs ◽  
Technical Parameters ◽  
Local Adaptations ◽  
Multi Scale ◽  
Institutional Settings ◽  
Wide Range ◽  
Inclusive Approach

A growing number of local green roof niches across the globe are transitioning into the mainstream domain. Guidelines are key to this process, as they define technological environments and set the criteria for best practices in a given socio-technical setting. Although the German Forschungsgesellschaft Landschaftsentwicklung Landschaftsbau (FLL) cornerstone guidelines provided solid empirical ground and established technical parameters for the successful application of green roofs across continents, investigations about alternative green roof guidelines for emerging markets remain very scarce. The paper presents the inclusive approach followed by the Bogota Green Roof Guidelines, which were the result of a multi-actor participatory process that examined how to embrace a wide range of emerging green roof technologies and local adaptations while promoting quality of application at different scales, regardless of the system used, and despite the absence of local robust empirical data on performance parameters. As a result, Bogota’s Green Roof Guidelines incorporated ad hoc elements: (1) new definitions and taxonomy, (2) function-based contents, (3) multi-scale approach, and (4) performance scoping. These aspects are discussed to provide novel insights for the advancement of green infrastructure policies in diverse institutional settings aiming to promote quality and simultaneously support markets that make room for a wide variety of green infrastructure practices.

Analysis of the Icelandic Modified Pitched Green Roof

2014 ◽  
Vol 1041 ◽  
pp. 253-256
Author(s):  
Klara Necadova ◽  
Petr Selnik
Keyword(s):  
European Union ◽  
Czech Republic ◽  
Green Roof ◽  
Material Design ◽  
Design Solution ◽  
The European Union ◽  
The Czech Republic ◽  
Climate Conditions ◽  
Roof Structure ◽  
The Individual

In Iceland appears historically proven construction of the pitched green roof. The material composition and methods of technological implementation create a unique comprehensive bond, which is resistant to frequent changes and fluctuations of the extreme climate conditions. Nowadays, the design of the construction is not being further developed, it does not use modern construction methods, knowledge, materials and also the construction does not meet the requirements of the building legislation in the European Union and in the Czech Republic. The article is an analysis of structural and material design of the original concept of the pitched turf roof originated from Iceland and particularly the theoretical design solution its modernized modification, which is adapted to suit the requirements of the building codes and laws in the European Union and in the Czech Republic. Another discussed problem is the assessment of the impacts of climate phenomena and its effect on the overall stability and behaviour of building physics of the roof structure and the individual layers captures possible utilization of this construction. The grass mats that create the casing of the pitched green roof affect the physical behaviour of the structure, which is discussed on a theoretical basis.

Roof Structure Evaluation in Climatic Chamber Module

2014 ◽  
Vol 1041 ◽  
pp. 239-242 ◽  
Author(s):  
Miloslav Bagoňa ◽  
Stanislav Tóth ◽  
Richard Baláž
Keyword(s):  
Phase Shift ◽  
Physical Properties ◽  
Climatic Chamber ◽  
Roof System ◽  
Related Data ◽  
Roof Structure ◽  
Measurement Results ◽  
Measuring Experiment ◽  
Structure Evaluation

The paper focuses on the assembly of equipment in experimental climate chambers with their respective sample envelopes and fenestration systems, which are involved in a measuring experiment. The prime aim is to design a logical and transparent system for gathering, evaluating and storing hygrothermal related data. This contribution further illustrates the installation of measurement points in test samples, the system of monitoring their physical properties, measurement results of roof system of the climatic chamber module and vapour barrier influence in roof structure on temperature damping phase shift.

scholarly journals A planning tool of urban greenroofs

2021 ◽  
Author(s):  
Angela Yick Ting Au
Keyword(s):  
Green Roof ◽  
Green Roofs ◽  
Storm Water ◽  
Planning Tool ◽  
Soil Mixture ◽  
Roof System ◽  
Urban Green ◽  
Roof Structure ◽  
Industrial Buildings

Current research does not integrate these benefits in the planning of green roof systems. The objective of this research is to develop a planning tool to evaluate storm water and energy benefits of a green roof structure. To demonstrate the planning tool, a case study of urban green roofs was conducted for three different building scenarios: residential, commercial and industrial buildings. Using the data collected at York University's green roof, the seasonal storm water and energy benefits in dollar values of each scenario were simulated. The study concluded that it is more important to select a proper soil mixture and type of plant when designing a green roof system. By understanding the stormwater and energy benefits, it is hoped that this research could accrue through the adoption of green roofs in Toronto as well as other Canadian cities.

ЕFFECT OF IRON AND NICKEL DITHIOCARBAMATES ON THE PROPERTIES OF MODIFIED POLYURETHANES

2021 ◽  
Vol 43 (3) ◽  
pp. 180-189
Author(s):  
L.P. ROBOTA ◽  
◽  
V.І. LYTVYAKOV ◽  
T.V. TRAVINSKA ◽  
YU.V. SAVELYEV ◽  
...  
Keyword(s):  
Ir Spectroscopy ◽  
Strength Properties ◽  
Climatic Chamber ◽  
Climate Chamber ◽  
Soxhlet Apparatus ◽  
Structural Peculiarities ◽  
The Matrix ◽  
Polymer Volume ◽  
Modifier Content ◽  
Radical Processes

The effect of modifiers - nickel bis(N,N-dimethyldithiocarbamate) (DTC-Ni) and iron tris(N, N-dimethyldithiocarbamate) (DTC-Fe) depending on their content on the structural peculiarities of polyurethane matrix based on polyoxytetramethylene glycol-1000 4,4’-diphenylmethane diisocyanate and 1,4-butanediol has been studied. The method of IR spectroscopy according to the results of NH groups’, C = O- and COC fragments’ association has shown the structuring effect of modifiers due to the PU matrix coordination. The processes of photolysis occurred as a result of exposure of PU under the conditions of the climate chamber have been also studied by IR spectroscopy method. The influence of modifiers and their content on the modified polyurethanes density has been investigated. The planar structure of DTC-Ni has shown to contribute to the density increase of modified PU as the result of polymer chain coordination, while the spherical structure of DTC-Fe - causes a density decrease due to steric hindrances in the implementation of H-bonds. Modification of polyurethanes with both nickel bis (N, N-dimethyldithiocarbamate) and iron tris (N, N-dimethyldithiocarbamate) as well as UV irradiation and moisture under the conditions of the climatic chamber contribute to the increase of water absorption. Studies of the strength properties of modified polyurethanes in comparison with the matrix under the conditions of the climate chamber have established the photosensitizing effect of nickel and iron dithiocarbamates. By studying the mass of samples of PU-DTС-Fe/Ni after extraction with dimethylformamide in the Soxhlet apparatus it has been found an increase in the level of gel fraction (0.29 - 1.58%) with increasing the modifier content, which confirms the presence of a network structure of modified PU due to radical processes taking place during destruction with the modifier participation. The influence of alkaline and acidic media on the destruction level of both modified polyurethanes and their analogues depending on the modifier content under the influence of climatic chamber conditions has been studied. Comparative derivatographic studies in air of weight loss of modified polyurethanes have confirmed the structuring and thermostabilizing effect of DTC-Ni on the PU matrix due to the probable difficulty of oxygen diffusion to the polymer volume, while the spatial structure of PU-DTC-Fe reduces the thermal stability.

scholarly journals Сalculation of maintenance of surface drainage roofing of a German manufacturer

2020 ◽  
Vol 35 (3) ◽  
pp. 44-56
Author(s):  
Tetiana M. Tkachenko ◽  
Ivan O. Prokopenko
Keyword(s):  
Surface Runoff ◽  
Negative Impact ◽  
Green Roof ◽  
Green Roofs ◽  
Climatic Conditions ◽  
Rain Water ◽  
Green Technologies ◽  
Sewer System ◽  
Reservoir Volume ◽  
Roof Structure

With the help of some green technologies, such as green roofs, quantitative and qualitative indicators of rainwater can be successfully adjusted. The big advantage of green roofs is the accumulation of moisture, which allows to delay the runoff of storm water, unloading the sewer system and preventing floods. However, an arbitrary increase in accumulated water in a standard green roof structure is not possible, because more amount of moisture can adversely affect vegetation. However, this option is available in the rainwater system on the green roof as an addition to other landscaping systems. The rainwater collection system on the green roof allows to accumulate on average 80 l/m² of rainfall and then release water into the sewer system for a certain period of time (from 24 hours to several days). The purpose of the study – to study the effect of surface runoff on the environment and reduce its negative impact with the help of green roofs. The calculation of the retained surface runoff by the roof of the German manufacturer was carried out according to the original author's method (Tkachenko, T., 2019). The reservoir volume was calculated using the author's advanced Wilo methodology adapted to the climatic conditions of Ukraine. The calculation of the retained surface runoff is done by the roof of the German manufacturer ZinCo. The "green" roof is located in Kiev. The area of the roof is 150 m2. ZinСo roof has been found to be able to hold 7950 liters of rainwater and thereby to reduce surface runoff by unloading storm wells. Roof efficiency for the reduction of surface runoff reaches 21.2%, which is a very good indicator. Purified rain water from green roofs can be collected in tanks and used for technical purposes. For collecting rain water from an intensive flat roof with an area of 150 m2, a 4 m3 tank is needed for an office staff of 8 people.

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