News

5

Aug

2015

Performance Based Design (PBD) is a major shift from traditional structural design concepts and represents the future of earthquake 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.

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28

Jul

2015

The following Enhancements have been implemented for ETABS 2015 v15.1.0: Automated seismic lateral loading has been implemented for the Dominican Republic R-001 code. Automated response-spectrum functions have been implemented for the following codes: Costa Rica Seismic code 2010, Ecuador (NEC-SE-DS 2015), Mexico (CFE-93 and CFE-2008), and Peru (NTE E.030 2014). 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. Time-dependent creep, shrinkage, and stiffness behavior has been added for the CEB FIP-2010 and ACI 209R-92 codes and for user-defined curves. Notional size for time-dependent creep and shrinkage behavior is now specified on the section properties rather than at the material level, and can be automatically computed or user-defined. 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. The speed of nonlinear static and nonlinear direct integration time-history analysis has been increased for models containing many linear shell elements. Several enhancements have been implemented for composite beam design to increase productivity and to improve reporting. The speed to display plots and tables of results for nonlinear modal time-history (FNA) load cases has been significantly increased. API (Application Programming Interface) functions have been added for defining and assigning pier and spandrel labels.

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17

Jul

2015

Significant enhancements included in SAFE 2014 (v14.1.0 and v14.1.1): Reinforced and Prestressed concrete design have been added for the ACI 318-14 code. Reinforced and Prestressed concrete design have been added for the CSA A23.3-14 code. The punching shear check of corner columns for all codes that consider linear elastic shear distribution along the punching perimeter now excludes the effect of the cross moment of inertia, making the check more practical and less over-conservative. This affects the ACI, Canadian, Chinese and Indian codes. The speed of nonlinear analysis has been increased.

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6

Jul

2015

The following Enhancements have been implemented for CSiBridge v17.3.0: Curved frame members are now displayed in extruded views. Arbitrary placement of support bearings at bents and abutments for concrete box-girder bridges. Time dependent creep and shrinkage curves for CEB FIP-2010, ACI 209R-92, and user-defined. Nonlinear static and nonlinear direct integration time history analysis speed increase. Steel I-girder and U-girder tabular design output for all load combinations at each design station. AASHTO LRFD 2012 6th Edition and 2014 7th Edition concrete frame design.

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6

Jul

2015

The following Enhancements have been implemented for SAP2000 v17.3.0: Time dependent creep and shrinkage curves for CEB FIP-2010, ACI 209R-92, and user-defined. Pipes and plates templates. Nonlinear static and nonlinear direct integration time history analysis speed increase.

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23

Jun

2015

Performance Based Design (PBD) is a major shift from traditional structural design concepts and represents the future of earthquake 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.

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20

May

2015

The following Enhancements have been implemented for CSiBridge v17.2.0: Segmental bridge template and wizard for quick definition of spans and segments as well as tendon layout. Horizontal influence-based moving loads for braking/acceleration and centrifugal effects Added a solid concrete girder deck section. Nonprismatic variation of concrete U-girder sections. Superstructure displacements for the entire section along the layout line and for individual girders or webs along their individual lines. Span definitions can now be input using either the span length or by station. Scale factors are now available for time-dependent creep, shrinkage, and stiffness of concrete, as well as relaxation of tendons. Section designer now allows prestress tendons to be defined for any concrete sections. Added superstructure design according to AASHTO LRFD 2014 (7th Edition), including the 2015 interim revisions. Added superstructure rating 2014 and 2015 interim revisions according to AASHTO. Standard vehicles are now defined in XML libraries, allowing users to create their own custom libraries. Standard precast concreate I, U, and bulb-tee girders are now defined in XML libraries, allowing users to create their own custom libraries. Added Washington State DOT standard precast I-girder and bulb-tee girder sections. Added the ability to modify the model geometry based on the shape of a buckling or modal case mode. Added a trapezoidal concrete frame section property. Added notional load pattern type. Added concrete frame design according to ACI 318-14. Added concrete frame design according to CSA A23.3-14. Added steel frame design according to CSA S16-14. Added steel frame design according to AISC ASD 89 and AISC ASD 01. Updated the Eurocode 8-2004 Norway National Annex to the latest version, EN 1998-1:2004 NA:2014. Other minor enhancements.

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20

May

2015

The following Enhancements have been implemented for SAP2000 v17.2.0: A new seastate load pattern has been added to allow the definition of pitch, roll, and yaw scenarios. Section designer now allows prestress tendons to be defined for any concrete sections. Added the ability to modify the model geometry based on the shape of a buckling or modal case mode. Scale factors are now available for time-dependent creep, shrinkage, and stiffness of concrete, as well as relaxation of tendons. Automated response spectrum functions have been added for Caribbean countries. Added a trapezoidal concrete frame section property. Aluminum tee, angle, pipe, and tube sections can now be added or imported. Added concrete frame design according to ACI 318-14. Added concrete frame design according to CSA A23.3-14. Added steel frame design according to CSA S16-14. Added the Ireland national annex for Eurocode 2 and Eurocode 3. Updated the Eurocode 8-2004 Norway National Annex to the latest version, EN 1998-1:2004 NA:2014. Import/export between SAP2000 and Revit Structure has been enhanced to handle round-tripping. Other minor enhancements.

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5

May

2015

Performance Based Design (PBD) is a major shift from traditional structural design concepts and represents the future of earthquake 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.

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17

Apr

2015

On Saturday, April 11, 2015, over 1500 dazzling guests convened at San Francisco City Hall in San Francisco, California, to commemorate the 40th anniversary of Computers and Structures, Inc. City Hall’s Rotunda was transformed into a glittering Emerald City, and guests had their photos taken with body-painted superheroes and Hollywood icons. Live entertainment featured breakdancing characters from the Wizard of Oz, live singing, and incredible choreographed musical numbers. 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, featuring a Hollywood theme, was the culmination of CSI's international dealer 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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