Application of partial cross-section precast system to save the Amazon forest

2010 ◽  
Vol 37 (6) ◽  
pp. 878-886 ◽  
Author(s):  
Dênio Ramam Carvalho de Oliveira ◽  
Maurício de Pina Ferreira ◽  
José Guilherme Silva Melo
Keyword(s):  
Cross Section ◽  
Partial Cross Section ◽  
Structural Function ◽  
Amazon Forest ◽  
Structural Elements ◽  
Transport Costs ◽  
Flat Plates ◽  
Permanent Formwork ◽  
Low Weight ◽  
Material Economy

The Brazilian civil construction industry is one of the largest consumers of wood in the country. The majority of wood is used as formwork to build concrete structures and is discarded at the end of the construction process. This study presents an innovative structural system that uses a type of partial cross-section precast system with thin reinforced concrete flat plates, which are transported and assembled at the construction site and act as permanent formwork with structural function. The major advantages of this system include the reduction of transport costs; easier assembly of the structural elements because of its low weight; and the possibility of idealizing and designing rigid connections between structural elements, improvement of the structural behavior and postive impact on the material economy. This paper presents construction details, tests results, and some real cases where partial cross-section beams and columns were successfully applied in Brazil.

Oxygen K near edge structures studied with multiple scattering calculations

1988 ◽  
Vol 46 ◽  
pp. 504-505
Author(s):  
Xudong Weng ◽  
Peter Rez
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Partial Cross Section ◽  
Energy Window ◽  
Edge Structure ◽  
Fine Structures ◽  
Hydrogenic Model ◽  
Electron Energy Loss ◽  
Quantitative Chemical

In electron energy loss spectroscopy, quantitative chemical microanalysis is performed by comparison of the intensity under a specific inner shell edge with the corresponding partial cross section. There are two commonly used models for calculations of atomic partial cross sections, the hydrogenic model and the Hartree-Slater model. Partial cross sections could also be measured from standards of known compositions. These partial cross sections are complicated by variations in the edge shapes, such as the near edge structure (ELNES) and extended fine structures (ELEXFS). The role of these solid state effects in the partial cross sections, and the transferability of the partial cross sections from material to material, has yet to be fully explored. In this work, we consider the oxygen K edge in several oxides as oxygen is present in many materials. Since the energy window of interest is in the range of 20-100 eV, we limit ourselves to the near edge structures.

scholarly journals Asymptotic behaviour of the partial cross-section

1971 ◽  
Vol 2 (24) ◽  
pp. 1261-1264 ◽  
Author(s):  
L. Caneschi
Keyword(s):  
Asymptotic Behaviour ◽  
Cross Section ◽  
Partial Cross Section

Partial cross section of neutron-induced reactions on 136Xe at E n = 5 MeV for 0νββ background studies

2018 ◽  
Vol 45 (12) ◽  
pp. 125101
Author(s):  
M Bhike ◽  
J H Esterline ◽  
B Fallin ◽  
S W Finch ◽  
M E Gooden ◽  
...  
Keyword(s):  
Cross Section ◽  
Partial Cross Section

scholarly journals Prefabricated aluminium halls

2021 ◽  
Vol 73 (02) ◽  
pp. 141-151
Keyword(s):  
Bolted Joints ◽  
Structural Systems ◽  
Transport Costs ◽  
Low Weight ◽  
Multiple Uses ◽  
Norm Series

Prefabricated aluminium halls are usually temporary structures with multiple uses. Their biggest advantage is low weight resulting in lower transport costs and allowing for quick assembly. Today, there is a growing demand for aluminium halls to become permanent structures, and therefore, in meeting the requirements of EN 199x norm series, it is necessary to optimize the calculation aspect of conventional structural systems with reinforced bolted joints. An overview of the most common structural systems, typical aluminium profiles and joints with steel reinforcements, as well as a common approach for design and assembly, is presented in the paper.

scholarly journals Partial factors for cross-section resistance of elements in steel structures

2013 ◽  
Vol 12 (2) ◽  
pp. 213-220
Author(s):  
Marian Giżejowski ◽  
Zbigniew Stachura
Keyword(s):  
Cross Section ◽  
Steel Structures ◽  
Partial Cross Section ◽  
Live Load ◽  
Practical Application ◽  
Limit States ◽  
Resistance Factors ◽  
Safety Requirements ◽  
Permanent Load ◽  
Load Component

Issues related to safety requirements for steel elements subjected to different stress resultants in reference to limit states design philosophy according to Structural Eurocodes PN-EN and national codes PN-B are dealt with in the paper. The calibration of partial cross-section resistance factors is discussed on the basis of elements of steel floor structures where the permanent load component and the live load component of variable actions are the only components of load combinations. Final conclusions for their practical application in the codification process are formulated and values of partial factors for cross section resistance are proposed.

Partial Cross Section Measurements with the Harwell 28-Mev Linear Accelerator

1962 ◽  
pp. 109-123 ◽  
Author(s):  
F.D. BROOKS ◽  
J.R. BIRD
Keyword(s):  
Cross Section ◽  
Linear Accelerator ◽  
Partial Cross Section

scholarly journals keV – Neutron Spectrometry Method for Partial Cross Section Measurements

2002 ◽  
Vol 39 (sup2) ◽  
pp. 646-648 ◽  
Author(s):  
Yu.P. Popov ◽  
A.V. Voinov ◽  
N.A. Gundorin ◽  
A.P. Kobzev ◽  
P.V. Sedyshev ◽  
...  
Keyword(s):  
Cross Section ◽  
Partial Cross Section ◽  
Neutron Spectrometry ◽  
Spectrometry Method

Measurements of the partial cross section for the reaction 48Ti(n, γ 1)49Ti and estimation of the radiative strength functions for E1 and M1 transitions

2003 ◽  
Vol 66 (1) ◽  
pp. 44-46 ◽  
Author(s):  
A. V. Voinov ◽  
D. G. Serov ◽  
Yu. P. Popov ◽  
N. A. Gundorin ◽  
A. P. Kobzev ◽  
...  
Keyword(s):  
Cross Section ◽  
Partial Cross Section ◽  
Strength Functions
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