News

14

Jul

2016

In this presentation, Ashraf will share his passion and enthusiasm for Technology, Architecture and Engineering, the grandeur and glory of which are worthy of celebrating! Indeed, it is because of the brilliance of Architectural Engineering that ancient monuments are still standing and why breathtaking new structures—such as the Burj Khalifa in the UAE and the Bird’s Nest Stadium in Beijing—can exist today. Ashraf brings into focus the invaluable socio-economic contributions of such noble professionals by recognizing their unmatched impact on humanity. In his talks, Ashraf aims to create a mainstream appreciation by highlighting for their work by leveraging the powerful positive social and economic aspects.

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26

Apr

2016

Performance Based Design (PBD) is a major shift from traditional structural design concepts and represents the future of earthquake and wind engineering. These new procedures help assure that the design will reliably meet a desired level of performance during a given earthquake or hurricane. The fundamental component of PBD is nonlinear dynamic analysis where an attempt is made to capture the real behavior of the structure by explicitly modeling and evaluating post-yield ductility and energy dissipation when subjected to actual earthquake ground motions. PBD is also being used for the design of structures subjected to extreme wind and hurricane conditions.

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2

Apr

2016

On Saturday, April 2, 2016, over 1500 dazzling guests convened at San Francisco City Hall in San Francisco, California, to commemorate the 41st anniversary of Computers and Structures, Inc. The theme this year was New York, New York! and City Hall was decked out in the plush red velvet and glittering gold of Broadway theaters. Guests mingled with characters from classic Broadway hits and enjoyed a spectacular live medley of musical and dance performances. Guests—among whom were prominent members of the structural engineering profession, professors, researchers, civic leaders, and others who travelled from all over the world—danced and dined until midnight. The sparkling celebration was the culmination of CSI's international Channel Partner conference, which was held at the Marriott Union Square and was attended by CSI software channel partners from around the globe.

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10

Mar

2016

Module 1: Modeling with ETABS - Tall Bulidngs

  • Working with multiple towers
  • Importing geometry from CAD plans
  • Walls modelling options, including openings on walls
  • Rigid and Semi-rigid diaphragms
  • Automatic mesh options and edge constraints
  • Output tables for wind tunnel testing

Module 2: Axial Shortening including Aging Effects

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    2

    Mar

    2016

    The following Enhancements have been implemented for CSiBridge 2016 v18.1.0. • A new operation has been added for staged-construction load cases to allow changing link properties. • An event-to-event solution strategy has been implemented as an option for nonlinear direct-integration time-history analysis. • Automated seismic design has been extended to consider the bridge capacity in the longitudinal direction. • It is now possible to graphically display the loads on a model for each stage of a staged construction load case. • It is now possible to graphically display all load types in a load case, in a single view. • Section cuts are now automatically created at user-defined ‘All Spaces’ splice locations. • The speed of performing bridge superstructure design and rating has been increased for certain models. • The New Zealand vehicle library has been added. • The New Zealand material property library has been added.

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    2

    Mar

    2016

    The following Enhancements have been implemented for SAP2000 v18.1.0. • A new operation has been added for staged-construction load cases to allow changing link properties. • An event-to-event solution strategy has been implemented as an option for nonlinear direct-integration time-history analysis. • The Chinese auto wind loading has been updated to GB 50009-2012. • Concrete frame design according to the Russian SP 63.13330.2012 code has been added. • It is now possible to graphically display the loads on a model for each stage of a staged construction load case. • It is now possible to graphically display all load types in a load case, in a single view. • Some of the display menu forms have been enhanced to allow them to remain open for repetitive use with a new apply button. • The New Zealand material property library has been added. • API functions have been added to allow setting of the ‘Automatically Generate Code-Based Design Load Combinations’ option. • API functions have been added to allow working with the NTC 2008 response spectrum function, auto seismic load pattern, and auto wind load pattern.

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    26

    Feb

    2016

    Performance Based Design (PBD) is a major shift from traditional structural design concepts and represents the future of earthquake and wind engineering. These new procedures help assure that the design will reliably meet a desired level of performance during a given earthquake. The fundamental component of PBD is nonlinear dynamic analysis where an attempt is made to capture the real behavior of the structure by explicitly modeling and evaluating post-yield ductility and energy dissipation when subjected to actual earthquake ground motions.

    Continue Reading

    16

    Feb

    2016

    Ashraf Habibullah, President and CEO of Computers & Structures, Inc., will host a special cocktail and dinner reception at the Phoenix Art Museum on February 16, 2016, in conjunction with the 2016 Geotechnical & Structural Engineering Congress in Phoenix, AZ. The event will feature dinner and entertainment in celebration of the Structural Engineering Institute’s (SEI) Vision for the Future of Structural Engineering, a set of initiatives associated with leadership and innovation that will revolutionize the future of our amazing profession. Join Ashraf for an evening of fun, inspiration and fabulous prizes. You won’t want to miss this!

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    25

    Nov

    2015

    The following Enhancements have been implemented for ETABS 2015 v15.2.0: • A tailored summary report is now provided for the Chinese versions. • An enhancement has been made in the Chinese version of the program in which the results of three methods in “Frame Overturning Moments in Dual System” are output the database table • An enhancement has been made to report story and diaphragm maximum and average drifts in the database tables. • An enhancement has been made in which the drifts are now reported at brace locations also. Previously drifts were only reported at column and wall locations and at the outer perimeter. • An enhancement has been implemented to update the Russian material library to modify the concrete ultimate strain values. • Enhancements have been made to the design of composite beam per the CSA S16-09 and CSA S16-14 codes to limit the total effective width of the slab to 1/4 the span of the beam, and to take into account the amount of deflection caused by shrinkage of the concrete. • An enhancement has been made in the Eurocode 2-2004 shear wall design report to report the wall unbraced height used for computing the pier buckling load capacity. • Support for AutoCAD versions 2015 and 2016 has been added for the export of AutoCAD .dwg files. • Plug-ins written to access the API (Application Programming Interface) can now be accessed within ETABS.

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    30

    Oct

    2015

    The following Enhancements have been implemented for CSiBridge 2016 v18.0.0. • A new stability check has been added for nonlinear static load cases to report when the structure may have failed under material or geometric nonlinearities that are not obvious from the analysis results. • A new 2-D modified Darwin-Pecknold concrete model has been added to the nonlinear layered shell. This model represents concrete compression, cracking, and shear behavior under both monotonic and cyclic loading, and accounts for crack rotation. • The handling of convergence tolerances for time-dependent behavior during staged-construction analysis has been improved to better enforce equilibrium after large load increments. • The modify undeformed geometry feature has been enhanced to allow applying the modification to a selection of joints, as well as limiting the direction of modification. • Contour plots are now available for frame deflections and axial stresses. • It is now possible to output the vehicle position for moving load analysis, for a specified max/min force component at a particular location. • The bridge modeler has been enhanced to more accurately define the geometry in the vicinity of a skewed support, diaphragm, or in-span hinge for curved bridges and/or parametric variations of the bridge section at the skew. • User-defined bridge sections can now be created and used in the bridge modeler, including different materials, openings, radii, parametric variations, and editing in Excel or section designer. • It is now possible to specify the location of steel I-girder splices, including the net to gross area ratio of the flanges in order to perform the design checks at these locations using the reduced flange area. • AASHTO superstructure design of steel I-girder bridge sections now computes the top and bottom flange tensile stress ranges for use in verifying load-induced fatigue criteria according to Clause 6.6.1.2.2. • AASHTO superstructure design of steel I-girder bridge sections now reports the total nominal shear force per Clause 6.10.10.4.2 to allow users to determine the required shear studs. • A new construction scheduling wizard has been added for segmental bridges which will quickly and easily create a construction schedule, including travelers. • Superstructure design according to CSA S6-14 has been added. • Superstructure design and rating of steel I-girder bridges according to AASHTO LRFD has been enhanced to consider a detailed calculation of the moment-gradient factor Cb. • The AASHTO legal loads for load rating have been added to the vehicle library. • A new cable-stayed bridge template has been added. • A set of additional frame and shell (non-bridge) templates has been added. • The DirectX graphics mode has been enhanced to use DirectX 11 for enhanced speed and capabilities. • A 64-bit version of the graphical user interface (GUI) is now available. • The assign and select menu forms have been enhanced to allow them to remain open for repetitive use with a new apply button.

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