Hello All

Does anyone have a design/detail of dog leg staircases?

Really Appreciate

Recently I had a "struggle" with steel trapezoidal profiles - couldn't find any kind of web site offering geometrical data of the profiles along with its weight per square meter. Today I've found what I was looking for for long time, so I wanted to share this with you (maybe someone find this helpful as it was helpful to me), beside this all of you can add some other websites offering similar data to this thread.

direct link to Trapezoidal Profiles Database of Thyssen Krupp:

hi
dear user i need this book

In this report, two new approaches, both the state space approach and the Lagrangian approach, are developed to consider the structure as a dynamical system. These are mixed methods, wherein besides displacements, the stress-resultants and other variable of state are primary unknowns. These methods can potentially be used for the analysis of structures to collapse as demonstrated by numerical examples. Attention is focused on skeletal structures, although the extension of the methods to other systems is discussed. The methods suggested, can be coupled with suitable pre- and post-processors to develop a unified computational platform for analysis of collapsing structures. Several appendices are included along with numerous equations and diagrams.

This report investigates the failure mechanisms of shear-critical squat (ratio height to length of less than two) reinforced concrete walls, commonly used in many commercial buildings and nearly all safety-related nuclear structures. A database with experimental data obtained from 434 tests is assembled with the objective of improving the current state of knowledge on squat wall response. The adequateness of the peak shear strength prediction equations available in current design provisions is evaluated. Improved empirical equations are developed for peak shear strength prediction for rectangular walls and walls with boundary elements in a format suitable for inclusion in standards and codes of practice. Squat walls are modeled using finite elements to predict their monotonic and cyclic responses. Modeling decisions that are critical to predict the wall responses are explored and recommendations for finite element modeling are made. Macro-level hysteretic models are prepared for a small number of squat walls for which digital load-displacement data are available. The calibrated Ibarra-Krawinkler model is used to properly capture the strength, stiffness degradation, and pinching effects in the walls response. Information in the database is used to identify damage states and to develop fragility functions for buildings and safety-related nuclear structures incorporating squat reinforced concrete walls.

Dear All brothers,

Manual for the seismic of steel and concrete buildings to Eurocode 8 is a document of IstructE.
It is useful to understand clear about eurecode 8 and detail of Reinforced concrete of steel element.

Hi dear members
I would be grateful if anyone could provide me with these papers and reports about optimal control .

1-Optimal Control of Nonlinear Structures
J. N. Yang, F. X. Long, and D. Wong
J. Appl. Mech. -- December 1988 -- Volume 55, Issue 4, 931 (8 pages)

Hi all,

I am posting this as a way i can get your opinions on these two softwares. If you dont already know. PaveAir is made by the FAA and MicroPaver is made by the armycore of engineers. They are used in Pavement Management Systems around the world. I have been researching several airports which i am going to be developing a PMS guide for the smaller airports but i am stuck on which one i should recommend. Each have benefits and each have cons . I do not want to put a personal judgment but a choice based on user use. If anyone wants the software i can get it for you or show you how to install it. but for now please let me know your opinions about each or both.

Regards,
IIGENIUSII