The columns of frame structures are the key load-bearing components and the exterior columns are susceptible to attack in terrorist blasts. When subjected to blast loads, the columns would suffer a loss of bearing capacity to a certain extent due to the damage imparted which may lead to their collapse and even cause the progressive collapse of the whole structure . The concrete-filled steel col...

This study presents the results of large scale laboratory model tests to investigate the behavior of Compacted Lime – Well-graded Soil (CL-WS) rigid stone columns in soft soils. The  unit cell idealization is used for construction of composite specimens by evaluating the influence of different parameters such as the diameter of the column (D), the slenderness ratio (L/D) and the area ratio (Ar)...

The Rambus standardization skullduggery saga continues. As related in the May/June, July/August, and September/October 2001 Micro Law columns, SDRAM technology licensor Rambus sued chipmaker Infineon for patent infringement because Infineon refused to take a license under Rambus’ patents. (SDRAMs are synchronous dynamic random-access memory chips. Instead of running asynchronously (like ordinar...

In this paper a simple model of a three story building with inclined first-story columns has presented. The stories are supposed to be rigid and are connected to axially rigid mass less columns by elasto-plastic rotational springs and linear rotational dampers. The considered model is subjected to horizontal component of fault normal pulse with different magnitudes and the governed nonlinear di...

These supplementary notes are provided in an educational spirit. Section 2 shows how the cross-product formula for computing columns of the Jacobian emerges from direct calculus. Section 5 extends to arbitrary Euler angles. Our work is not limited to homogeneous coordinates or Euler angles. However, these representations are well known and chosen merely to present to a wider audience. In fact o...

  The simulation of distillation columns is an essential step in design, optimization, and rating. In this paper, a new procedure has been proposed for the initial estimation of column profiles based on modified Kremser’s group method for simple and/or complex columns. The effect of this initialization algorithm on simulation procedure has been studied through two examples. The results show sig...

Original scientific paper RC frame structures with specially shaped columns and RC frame structures with rectangular columns are different types of structures with different column sections. A progressive collapse analysis model of RC frames was proposed using the beam-column element and joint element based on the program OpenSees. Progressive collapse performance of the experimental frame was ...