The present work has as main aim to make a small introduction about the types of steels, specially the ones used in the construction industry. This material is appreciated in construction due to its many advantages as strengths, resistance, adaptability and flexibility in design, durability, recyclability,...; even thou its also has week points like a low resistance to fire, weak against corros...

Nowadays, as a result of increased terrorist and bomb attacks throughout the globe in the vicinity of strategic buildings, designing these structures against impact loads, particularly the blast-related ones, has been taken into more consideration. The current procedure for designing the structure against an explosion is a design against the local failure of the current elements in the first st...

a r t i c l e i n f o Keywords: Concrete-filled steel tube (CFST) Confinement effect Fuzzy logic Modified learning from example (MLFE) Axial load capacity A circular concrete-filled steel tube (CFST) has several advantages compared with the conventional reinforced concrete member or hollow steel tube, since the tri-axial state of compression of the concrete infill increases its strength and str...

The work described here was largely performed at a medium-sized European steel mill, with an unusually diverse product portfolio, and hence a difficult scheduling problem to solve. The decision support system developed as a result has been successfully used, with minor modifications, at many steel mills worldwide. The work was carried out while the author was employed at A. I. Systems, Belgium,...

the austenitic stainless steel (ss) has been used as a material for  building  ultra  high  vacuum  (uhv)  chamber.  recently significant  efforts  have  been  concerned  a  comparing  the standard  cleaned  for  ultra  high  vacuum,  passivity  stainless. in  this work austenitic  nanocomposites were  synthesize by sol-  gel method. the morphologies  and  topographies  of  the samples  have  b...

We present the implementation of GTCIS2SQL a relational database implementation of CIS/2, an industry-led product model for the structural steel used in building construction. GTCIS2SQL supports web-based communication with applications exchanging data though P-21 files for both input and output. It supports a variety of query capabilities. Details of the implementation are presented.

Classification of local area surface defects on hot rolled steel is a problematic task due to the variability in manifestations of the defects grouped under the same defect label. This paper discusses the use of two adaptive computing techniques, based on supervised and unsupervised learning, with a view to establishing a bask for building reliable decision support systems for classification.

Steel bridge erection requires a series of processes in the construction site including shipping, sequentially lifting, and installing bridge components that are fabricated in the factory. Each process is critical and the risks are high due to the fact that conditions in the field are far more complex than in the factory. A detailed lifting plan is important to ensure the successful completion ...

This study presents a hybrid metaheuristic algorithm to obtain optimum designs for steel space buildings. The optimum design problem of three-dimensional steel frames is mathematically formulated according to provisions of LRFD-AISC (Load and Resistance factor design of American Institute of Steel Construction). Design constraints such as the strength requirements of structural members, the dis...

Using a genetic algorithm owing to high nonlinearity of constraints, this paper first works on the optimal design of two-span continuous singly reinforced concrete beams. Given conditions are the span, dead and live loads, compressive strength of concrete and yield strength of steel; design variables are the width and effective depth of the continuous beam and steel ratios for positive and nega...