Crack width verification and minimum reinforcement according to EC 2 ‐ current model with specifications in Germany and Austria versus proposal for revision

2021 ◽  
Author(s):  
Nguyen Viet Tue ◽  
Ekkehard Fehling ◽  
Dirk Schlicke ◽  
Christina Krenn
Keyword(s):  
Crack Width ◽  
Current Model ◽  
Minimum Reinforcement

Calculation of the Minimum Reinforcement for Limitation of Crack Width According to Change of National Annex for ČSN EN 1992-1-1

2015 ◽  
Vol 1106 ◽  
pp. 217-220
Author(s):  
Jiří Šmejkal ◽  
Jaroslav Procházka
Keyword(s):  
Reinforced Concrete ◽  
Crack Width ◽  
Concrete Structures ◽  
Maximum Distance ◽  
Reinforced Concrete Structures ◽  
Optimal Amount ◽  
Minimum Reinforcement ◽  
Concrete Elements

Design of minimum reinforcement for concrete elements with regard to width of cracks is important for consumptions of steel. Optimal amount of reinforcement shall ensure that cracks, which are typical for reinforced concrete structures, will be small that the serviceability and durability will be not influenced. One of most important parameter for crack width is the maximum distance between cracks. The information connecting with various procedures for design and minimum reinforcement with regard to width of cracks are given in this article.

scholarly journals Minimum Reinforcement for Crack Width Control in RC Tensile Elements

2019 ◽  
Vol 65 (1) ◽  
pp. 111-128
Author(s):  
M. Knauff ◽  
B. Grzeszykowski ◽  
A. Golubińska
Keyword(s):  
Heat Release ◽  
Crack Width ◽  
Retaining Wall ◽  
Hydration Heat ◽  
Thermal Shrinkage ◽  
New Approach ◽  
Minimum Reinforcement ◽  
Limit Value

AbstractNew approach using direct crack width calculations of the minimum reinforcement in tensile RC elements is presented. Verification involves checking whether the provided reinforcement ensures that the crack width that may result from the thermal-shrinkage effects does not exceed the limit value. The Eurocode provisions were enriched with addendums derived from the German national annex. Three levels of accuracy of the analysis were defined - the higher the level applied, the more significant reduction in the amount of reinforcement required can be achieved. A methodology of determining the minimum reinforcement for crack width control on the example of a RC retaining wall is presented. In the analysis the influence of residual and restraint stresses caused by hydration heat release and shrinkage was considered.

Early ossicle growth in the regenerating disc of a brittle star

1994 ◽  
Vol 52 ◽  
pp. 364-365
Author(s):  
M. Shlepr ◽  
R. L. Turner
Keyword(s):  
Cell Membrane ◽  
Light Microscopy ◽  
De Novo ◽  
Current Model ◽  
Syncytium Formation ◽  
Brittle Star ◽  
Intracellular Location ◽  
Limited Volume ◽  
Tissue Calcification

Calcification in the echinoderms occurs within a limited-volume cavity enclosed by cytoplasmic extensions of the mineral depositing cells, the sclerocytes. The current model of this process maintains that the sheath formed from these cytoplasmic extensions is syncytial. Prior studies indicate that syncytium formation might be dependent on sclerocyte density and not required for calcification. This model further envisions that ossicles formed de novo nucleate and grow intracellularly until the ossicle effectively outgrows the vacuole. Continued ossicle growth occurs within the sheath but external to the cell membrane. The initial intracellular location has been confirmed only for elements of the echinoid tooth.The regenerating aboral disc integument of ophiophragmus filograneus was used to test the current echinoderm calcification model. This tissue is free of calcite fragments, thus avoiding questions of cellular engulfment, and ossicles are formed de novo. The tissue calcification pattern was followed by light microscopy in both living and fixed preparations.

Ring current model of the naphthalene molecule

1997 ◽  
Vol 92 (3) ◽  
pp. 609-617 ◽  
Author(s):  
RICCARDO ZANASI ◽  
PAOLO LAZZERETTI
Keyword(s):  
Ring Current ◽  
Current Model ◽  
Naphthalene Molecule

MESSINE, a Parametric Three-Dimensional Eddy Current Model

2000 ◽  
Vol 12 (1) ◽  
pp. 65-86 ◽  
Author(s):  
R. La ◽  
B. Benoist ◽  
B. de Barmon ◽  
M. Talvard ◽  
R. Lengelle ◽  
...  
Keyword(s):  
Eddy Current ◽  
Current Model ◽  
Three Dimensional

Current Model

1957 ◽  
Vol 2 (6) ◽  
pp. 153-155
Author(s):  
W. K. ESTES
Keyword(s):  
Current Model

Voices of Distress: The Emotional Peril of Not Attaining a Dietetic Internship in Ontario

2013 ◽  
Vol 1 (3) ◽  
pp. 9
Author(s):  
Jennifer Lee Brady ◽  
Annie Hoang ◽  
Olivia Siswanto ◽  
Jordana Riesel ◽  
Jacqui Gingras
Keyword(s):  
Empirical Research ◽  
Current Model ◽  
Well Being ◽  
Structured Interview ◽  
Application Process ◽  
Dietetic Education ◽  
Dietetic Internship ◽  
The Impact ◽  
And Training ◽  
Future Growth

Obtaining dietetic licensure in Ontario requires completion of a Dietitians of Canada (DC) accredited four-year undergraduate degree in nutrition and an accredited post-graduate internship or combined Master’s degree program. Given the scarcity of internship positions in Ontario, each year approximately two-thirds of the eligible applicants who apply do not receive a position XX, XX, XX, XX, XX, XX, in press). Anecdotally, not securing an internship position is known to be a particularly disconcerting experience that has significant consequences for individuals’ personal, financial, and professional well-being. However, no known empirical research has yet explored students’ experiences of being unsuccessful in applying for internship positions. Fifteen individuals who applied between 2005 and 2009 to an Ontario-based dietetic internship program, but were unsuccessful at least once, participated in a one-on-one semi-structured interview. Findings reveal that participants’ experiences unfold successively in four phases that are characterized by increasingly heightened emotional peril: naïveté, competition, devastation, and frustration. The authors conclude that the current model of dietetic education and training in Ontario causes lasting distress to students and hinders the future growth and vitality of the dietetic profession. Further research is required to understand the impact of the current model on dietetic educators, internship coordinators, and preceptors as coincident participants in the internship application process.

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